Analyzer frequently crashes

[bsutton]

I'm seeing lots of crashes from the dart analyzer server in vs code.

Not just for this project but for most of the project I work with.

I am using a custom lint via the lint_hard package.

name: onepub_support_bit
description: Handles incoming support emails and drafts a response.
version: 1.0.0

environment:
  sdk: '>=3.4.0 <4.0.0'

dependencies:
  args: ^2.7.0
  dcli: ^8.2.0
  dcli_core: ^8.0.0
  dotenv: ^4.2.0
  googleapis: ^15.0.0           # Gmail
  googleapis_auth: ^2.0.0
  html: ^0.15.6
  html2md: ^1.3.2
  html_unescape: ^2.0.0
  http: ^1.2.2
  logging: ^1.2.0
  mime: ^2.0.0
  path: ^1.9.1

dev_dependencies:
  lint_hard: ^6.0.0

dart --version
Dart SDK version: 3.9.2 (stable) (Wed Aug 27 03:49:40 2025 -0700) on "linux_x64"

vs code dart code extension

Identifier: dart-code.dart-code, Version: 3.122.0

{"id":70,"jsonrpc":"2.0","method":"client/registerCapability","params":{"registrations":[{"id":"271","method":"textDocument/codeAction","registerOptions":{"codeActionKinds":["source","source.organizeImports","source.fixAll","source.sortMembers","quickfix","refactor"],"documentSelector":[{"language":"dart","scheme":"file"},{"language":"dart","scheme":"dart-macro+file"},{"pattern":"**/*","scheme":"file"}]}},{"id":"274","method":"textDocument/completion","registerOptions":{"documentSelector":[{"pattern":"**/*","scheme":"file"},{"language":"yaml","pattern":"**/pubspec.yaml","scheme":"file"},{"language":"yaml","pattern":"**/analysis_options.yaml","scheme":"file"},{"language":"yaml","pattern":"**/lib/{fix_data.y…
[10:06:28] [Analyzer] [Info] ==> Content-Length: 73
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":69,"result":null,"clientRequestTime":1762815988224}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 180
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didClose","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/pubspec.yaml"}},"clientRequestTime":1762815988224}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 191
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didClose","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"}},"clientRequestTime":1762815988224}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 193
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didClose","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/lib/src/gmail_client.dart"}},"clientRequestTime":1762815988224}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 188
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didClose","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/support_bit.dart"}},"clientRequestTime":1762815988224}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 191
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didClose","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/lib/onepub_support.dart"}},"clientRequestTime":1762815988224}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 203
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didClose","params":{"textDocument":{"uri":"file:///home/bsutton/.pub-cache/hosted/pub.dev/googleapis-13.2.0/lib/gmail/v1.dart"}},"clientRequestTime":1762815988224}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 189
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didClose","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/analysis_options.yaml"}},"clientRequestTime":1762815988224}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 194
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didClose","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/lib/src/openai_client.dart"}},"clientRequestTime":1762815988224}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 186
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didClose","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815988224}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 73
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":70,"result":null,"clientRequestTime":1762815988225}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 701
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/pubspec.yaml","languageId":"yaml","version":135,"text":"name: onepub_support_bit\ndescription: Handles incoming support emails and drafts a response.\nversion: 1.0.0\n\nenvironment:\n  sdk: '>=3.4.0 <4.0.0'\n\ndependencies:\n  args: ^2.7.0\n  dcli: ^8.2.0\n  dcli_core: ^8.0.0\n  dotenv: ^4.2.0\n  googleapis: ^15.0.0           # Gmail\n  googleapis_auth: ^2.0.0\n  html: ^0.15.6\n  html2md: ^1.3.2\n  html_unescape: ^2.0.0\n  http: ^1.2.2\n  logging: ^1.2.0\n  mime: ^2.0.0\n  path: ^1.9.1\n\ndev_dependencies:\n  lint_hard: ^6.0.0\n"}},"clientRequestTime":1762815988225}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 2089
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart","languageId":"dart","version":290,"text":"#! /usr/bin/env dart\n\nimport 'dart:convert';\nimport 'dart:io';\n\nimport 'package:dcli/dcli.dart';\nimport 'package:dotenv/dotenv.dart';\nimport 'package:http/http.dart' as http;\nimport 'package:path/path.dart';\n\nFuture<void> main() async {\n  final env = DotEnv()..load();\n\n  final apiKey = env['OPENAI_API_KEY']!;\n  final docs = env['ONEPUB_DOC_FOLDER'] ?? 'docs';\n  final pathToDocs = absolute(docs);\n\n  if (!exists(pathToDocs)) {\n    printerr('$pathToDocs directory not found');\n    exit(2);\n  }\n\n  final headers = {\n    'Authorization': 'Bearer $apiKey',\n    'Content-Type': '…
[10:06:28] [Analyzer] [Info] ==> Content-Length: 3026
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/lib/src/gmail_client.dart","languageId":"dart","version":31,"text":"import 'dart:convert';\n\nimport 'package:googleapis/gmail/v1.dart' as gmail;\nimport 'package:googleapis_auth/auth_io.dart';\n\n// Gmail “get message” / “create draft” methods are documented here.\n// Google for Developers\n// +1\n\n// Tip: begin with polling (is:unread on a label). Once stable, switch to users.watch + Pub/Sub for low-latency push. (See “Push” below.)\n// Google for Developers\n\nclass GmailClient {\n  // final AuthClient _client;\n  final gmail.GmailApi _api;\n\n  static const _scopes = [\n    gmail.GmailApi.gmailModifyScope,\n    gmail.GmailApi.gmailComposeScope,\n  ];\n\n…
[10:06:28] [Analyzer] [Info] ==> Content-Length: 3214
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/support_bit.dart","languageId":"dart","version":30,"text":"#! /usr/bin/env dart\n\nimport 'dart:convert';\nimport 'dart:io';\n\nimport 'package:dotenv/dotenv.dart';\nimport 'package:googleapis/gmail/v1.dart' as gmail;\nimport 'package:html_unescape/html_unescape.dart';\nimport 'package:onepub_support_bit/onepub_support.dart';\n\nString decodeBody(gmail.Message msg) {\n  // Pull the plain text payload if available; fall back to snippet.\n  final payload = msg.payload;\n  String? data;\n\n  // Walk parts to find 'text/plain'\n  if (payload?.parts != null) {\n    for (final p in payload!.parts!) {\n      if (p.mimeType == 'text/plain' && p.body?.data != null…
[10:06:28] [Analyzer] [Info] ==> Content-Length: 579
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/.env","languageId":"properties","version":65,"text":"OPENAI_API_KEY=\nGMAIL_CLIENT_ID=xxx.apps.googleusercontent.com\nGMAIL_CLIENT_SECRET=xxxx\nGMAIL_SUPPORT_LABEL_ID=onepub-support\nGMAIL_REVIEW_LABEL_ID=onepub-review\nONEPUB_DOC_FOLDER=doc\n\n"}},"clientRequestTime":1762815988225}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 300
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/lib/onepub_support.dart","languageId":"dart","version":39,"text":"export 'src/gmail_client.dart';\nexport 'src/openai_client.dart';\n"}},"clientRequestTime":1762815988225}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 222647
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///home/bsutton/.pub-cache/hosted/pub.dev/googleapis-13.2.0/lib/gmail/v1.dart","languageId":"dart","version":1,"text":"// This is a generated file (see the discoveryapis_generator project).\n\n// ignore_for_file: camel_case_types\n// ignore_for_file: comment_references\n// ignore_for_file: deprecated_member_use_from_same_package\n// ignore_for_file: doc_directive_unknown\n// ignore_for_file: lines_longer_than_80_chars\n// ignore_for_file: non_constant_identifier_names\n// ignore_for_file: prefer_interpolation_to_compose_strings\n// ignore_for_file: unnecessary_brace_in_string_interps\n// ignore_for_file: unnecessary_lambdas\n// ignore_for_file: unnecessary_string_interpolations\n\n/// Gmail API - v1\…
[10:06:28] [Analyzer] [Info] ==> Content-Length: 1388
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/analysis_options.yaml","languageId":"yaml","version":15,"text":"# This file configures the static analysis results for your project (errors,\n# warnings, and lints).\n#\n# This enables the 'recommended' set of lints from `package:lints`.\n# This set helps identify many issues that may lead to problems when running\n# or consuming Dart code, and enforces writing Dart using a single, idiomatic\n# style and format.\n#\n# If you want a smaller set of lints you can change this to specify\n# 'package:lints/core.yaml'. These are just the most critical lints\n# (the recommended set includes the core lints).\n# The core lints are also what is used by pub.dev for scori…
[10:06:28] [Analyzer] [Info] ==> Content-Length: 2228
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/lib/src/openai_client.dart","languageId":"dart","version":33,"text":"import 'dart:convert';\n\nimport 'package:http/http.dart' as http;\n\nclass OpenAIClient {\n  final String apiKey;\n  final String vectorStoreId;\n  final String model;\n\n  OpenAIClient(\n      {required this.apiKey,\n      required this.vectorStoreId,\n      this.model = 'gpt-5.1-mini'});\n\n  Future<String> draftSupportReply({\n    required String threadText,\n  }) async {\n    final url = Uri.parse('https://api.openai.com/v1/responses');\n\n    final body = {\n      'model': model,\n      'reasoning': {'effort': 'low'},\n      // Enable File Search and attach your vector store\n      'to…
[10:06:28] [Analyzer] [Info] ==> Content-Length: 10018
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didOpen","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart","languageId":"dart","version":91,"text":"// Pull docs.onepub.dev into local .md files.\n// Usage:\n//   dart run bin/pull_docs.dart \\\n//     --base-url https://docs.onepub.dev/ \\\n//     --out-dir build/docs-md \\\n//     --delay-ms 200\n//\n// Notes:\n// - Tries sitemap.xml first. Falls back to crawling links on-site.\n// - Strips some common layout chrome via --remove-selectors if provided.\n// - Rewrites internal links to local .md paths where possible.\n// - Respects your style prefs: await, braces on single-line ifs,\n//   <= 80 columns (as best as practical).\n\nimport 'dart:async';\nimport 'dart:io';\n\nimport 'package:args/args.…
[10:06:28] [Analyzer] [Info] ==> Content-Length: 98
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":180},"clientRequestTime":1762815988226}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 611
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":182,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"},"range":{"start":{"line":8,"character":7},"end":{"line":8,"character":31}},"context":{"diagnostics":[{"range":{"start":{"line":8,"character":7},"end":{"line":8,"character":31}},"message":"Unused import: 'package:path/path.dart'.\nTry removing the import directive.","code":"unused_import","codeDescription":{"href":"https://dart.dev/diagnostics/unused_import"},"severity":2,"source":"dart"}],"triggerKind":2}},"clientRequestTime":1762815988278}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 314
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":183,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/pubspec.yaml"},"range":{"start":{"line":15,"character":17},"end":{"line":15,"character":17}},"context":{"diagnostics":[],"triggerKind":2}},"clientRequestTime":1762815988279}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 195
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":184,"method":"textDocument/documentSymbol","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/pubspec.yaml"}},"clientRequestTime":1762815988279}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 206
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":185,"method":"textDocument/documentSymbol","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"}},"clientRequestTime":1762815988279}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 200
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":186,"method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"}},"clientRequestTime":1762815988445}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 193
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":187,"method":"textDocument/foldingRange","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/pubspec.yaml"}},"clientRequestTime":1762815988513}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 204
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":188,"method":"textDocument/foldingRange","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"}},"clientRequestTime":1762815988513}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 206
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":189,"method":"textDocument/documentSymbol","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"}},"clientRequestTime":1762815988579}
[10:06:28] [Analyzer] [Info] ==> Content-Length: 195
[10:06:28] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":190,"method":"textDocument/documentSymbol","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/pubspec.yaml"}},"clientRequestTime":1762815988579}
[10:06:30] [Analyzer] [Info] ==> Content-Length: 200
[10:06:30] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":191,"method":"textDocument/semanticTokens/full","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/pubspec.yaml"}},"clientRequestTime":1762815990147}
[10:06:30] [Analyzer] [Info] ==> Content-Length: 211
[10:06:30] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":192,"method":"textDocument/semanticTokens/full","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"}},"clientRequestTime":1762815990147}
[10:06:32] [DartToolingDaemon] [Info] ==> {"jsonrpc":"2.0","method":"postEvent","params":{"eventData":{"selections":[{"active":{"character":32,"line":28},"anchor":{"character":32,"line":28}}],"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart","version":290}},"eventKind":"activeLocationChanged","streamId":"Editor"}}
[10:06:32] [Analyzer] [Info] ==> Content-Length: 98
[10:06:32] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":186},"clientRequestTime":1762815992175}
[10:06:32] [Analyzer] [Info] ==> Content-Length: 200
[10:06:32] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":193,"method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"}},"clientRequestTime":1762815992176}
[10:06:32] [Analyzer] [Info] ==> Content-Length: 325
[10:06:32] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":194,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"},"range":{"start":{"line":28,"character":32},"end":{"line":28,"character":32}},"context":{"diagnostics":[],"triggerKind":2}},"clientRequestTime":1762815992180}
[10:06:32] [Analyzer] [Info] ==> Content-Length: 98
[10:06:32] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":182},"clientRequestTime":1762815992180}
[10:06:33] [Analyzer] [Info] ==> Content-Length: 98
[10:06:33] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":193},"clientRequestTime":1762815993781}
[10:06:33] [Analyzer] [Info] ==> Content-Length: 200
[10:06:33] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":195,"method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"}},"clientRequestTime":1762815993784}
[10:06:33] [DartToolingDaemon] [Info] ==> {"jsonrpc":"2.0","method":"postEvent","params":{"eventData":{"selections":[{"active":{"character":0,"line":0},"anchor":{"character":0,"line":0}}],"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart","version":290}},"eventKind":"activeLocationChanged","streamId":"Editor"}}
[10:06:33] [Analyzer] [Info] ==> Content-Length: 321
[10:06:33] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":196,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"},"range":{"start":{"line":0,"character":0},"end":{"line":0,"character":0}},"context":{"diagnostics":[],"triggerKind":2}},"clientRequestTime":1762815993975}
[10:06:33] [Analyzer] [Info] ==> Content-Length: 98
[10:06:33] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":194},"clientRequestTime":1762815993975}
[10:06:34] [Analyzer] [Info] ==> Content-Length: 234
[10:06:34] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":197,"method":"textDocument/hover","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"},"position":{"line":0,"character":20}},"clientRequestTime":1762815994158}
[10:06:34] [Analyzer] [Info] ==> Content-Length: 98
[10:06:34] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":197},"clientRequestTime":1762815994203}
[10:06:34] [Analyzer] [Info] ==> Content-Length: 246
[10:06:34] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":198,"method":"textDocument/documentHighlight","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"},"position":{"line":0,"character":20}},"clientRequestTime":1762815994253}
[10:06:34] [Analyzer] [Info] ==> Content-Length: 98
[10:06:34] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":198},"clientRequestTime":1762815994434}
[10:06:34] [DartToolingDaemon] [Info] ==> {"jsonrpc":"2.0","method":"postEvent","params":{"eventData":{"selections":[{"active":{"character":0,"line":0},"anchor":{"character":20,"line":0}}],"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart","version":290}},"eventKind":"activeLocationChanged","streamId":"Editor"}}
[10:06:34] [Analyzer] [Info] ==> Content-Length: 322
[10:06:34] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":199,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/upload_kb.dart.dart"},"range":{"start":{"line":0,"character":0},"end":{"line":0,"character":20}},"context":{"diagnostics":[],"triggerKind":2}},"clientRequestTime":1762815994635}
[10:06:34] [Analyzer] [Info] ==> Content-Length: 98
[10:06:34] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":196},"clientRequestTime":1762815994635}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 98
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":188},"clientRequestTime":1762815995477}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 98
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":195},"clientRequestTime":1762815995482}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 98
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":189},"clientRequestTime":1762815995482}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 98
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":199},"clientRequestTime":1762815995482}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 98
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":185},"clientRequestTime":1762815995483}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 200
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":200,"method":"textDocument/documentColor","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815995517}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 316
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":201,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"},"range":{"start":{"line":0,"character":0},"end":{"line":0,"character":0}},"context":{"diagnostics":[],"triggerKind":2}},"clientRequestTime":1762815995517}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 201
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":202,"method":"textDocument/documentSymbol","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815995517}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 199
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":203,"method":"textDocument/documentLink","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815995536}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 273
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":204,"method":"textDocument/inlayHint","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"},"range":{"start":{"line":60,"character":0},"end":{"line":275,"character":7}}},"clientRequestTime":1762815995542}
[10:06:35] [Analyzer] [Error] 
===== CRASH =====
si_signo=Segmentation fault(11), si_code=SEGV_MAPERR(1), si_addr=0x2bc
[10:06:35] [Analyzer] [Info] ==> Content-Length: 199
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":205,"method":"textDocument/foldingRange","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815995700}
[10:06:35] [DartToolingDaemon] [Info] ==> {"jsonrpc":"2.0","method":"postEvent","params":{"eventData":{"selections":[{"active":{"character":13,"line":176},"anchor":{"character":13,"line":176}}],"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart","version":91}},"eventKind":"activeLocationChanged","streamId":"Editor"}}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 195
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":206,"method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815995746}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 322
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":207,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"},"range":{"start":{"line":176,"character":13},"end":{"line":176,"character":13}},"context":{"diagnostics":[],"triggerKind":2}},"clientRequestTime":1762815995754}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 98
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":201},"clientRequestTime":1762815995754}
[10:06:35] [Analyzer] [Info] ==> Content-Length: 201
[10:06:35] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":208,"method":"textDocument/documentSymbol","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815995795}
[10:06:36] [DartToolingDaemon] [Info] ==> {"jsonrpc":"2.0","method":"postEvent","params":{"eventData":{"selections":[{"active":{"character":46,"line":151},"anchor":{"character":46,"line":151}}],"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart","version":91}},"eventKind":"activeLocationChanged","streamId":"Editor"}}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 98
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":206},"clientRequestTime":1762815996222}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 195
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":209,"method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815996224}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 98
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":204},"clientRequestTime":1762815996230}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 273
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":210,"method":"textDocument/inlayHint","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"},"range":{"start":{"line":0,"character":0},"end":{"line":130,"character":20}}},"clientRequestTime":1762815996230}
[10:06:36] [DartToolingDaemon] [Info] ==> {"jsonrpc":"2.0","method":"postEvent","params":{"eventData":{"selections":[{"active":{"character":0,"line":0},"anchor":{"character":0,"line":0}}],"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart","version":91}},"eventKind":"activeLocationChanged","streamId":"Editor"}}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 316
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":211,"method":"textDocument/codeAction","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"},"range":{"start":{"line":0,"character":0},"end":{"line":0,"character":0}},"context":{"diagnostics":[],"triggerKind":2}},"clientRequestTime":1762815996454}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 98
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":207},"clientRequestTime":1762815996471}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 323
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"textDocument/didChange","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart","version":92},"contentChanges":[{"range":{"start":{"line":0,"character":0},"end":{"line":0,"character":0}},"rangeLength":0,"text":"\n"}]},"clientRequestTime":1762815996833}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 98
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":211},"clientRequestTime":1762815996836}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 98
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":205},"clientRequestTime":1762815996836}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 273
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":212,"method":"textDocument/inlayHint","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"},"range":{"start":{"line":0,"character":0},"end":{"line":130,"character":25}}},"clientRequestTime":1762815996846}
[10:06:36] [Analyzer] [Info] ==> Content-Length: 98
[10:06:36] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":208},"clientRequestTime":1762815996867}
[10:06:37] [Analyzer] [Info] ==> Content-Length: 199
[10:06:37] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":213,"method":"textDocument/foldingRange","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815997019}
[10:06:37] [DartToolingDaemon] [Info] ==> {"jsonrpc":"2.0","method":"postEvent","params":{"eventData":{"selections":[{"active":{"character":0,"line":1},"anchor":{"character":0,"line":1}}],"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart","version":92}},"eventKind":"activeLocationChanged","streamId":"Editor"}}
[10:06:37] [Analyzer] [Info] ==> Content-Length: 98
[10:06:37] [Analyzer] [Info] ==> {"jsonrpc":"2.0","method":"$/cancelRequest","params":{"id":209},"clientRequestTime":1762815997082}
[10:06:37] [Analyzer] [Info] ==> Content-Length: 195
[10:06:37] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":214,"method":"textDocument/codeLens","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815997082}
[10:06:37] [Analyzer] [Info] ==> Content-Length: 201
[10:06:37] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":215,"method":"textDocument/documentSymbol","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815997167}
[10:06:37] [DartToolingDaemon] [Info] ==> {"jsonrpc":"2.0","method":"postEvent","params":{"eventData":{"selections":[{"active":{"character":0,"line":0},"anchor":{"character":0,"line":0}}],"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart","version":92}},"eventKind":"activeLocationChanged","streamId":"Editor"}}
[10:06:37] [Analyzer] [Info] ==> Content-Length: 206
[10:06:37] [Analyzer] [Info] ==> {"jsonrpc":"2.0","id":216,"method":"textDocument/semanticTokens/full","params":{"textDocument":{"uri":"file:///home/bsutton/git/onepub/onepub-support/bin/pull_docs.dart"}},"clientRequestTime":1762815997353}
[10:06:37] [Analyzer] [Warn] LSP Client closed (1762815835862,1762815888513,1762815904999,1762815921435,1762815997492 recent restarts recorded)
[10:06:37] [Analyzer] [Warn] Prompting to reload: (The Dart Analysis Server crashed 5 times in the last 3 minutes. See the log for more information.) (actions: Reload, Show Log)

[bwilkerson]

@keertip @srawlins @DanTup

[DanTup]

@bsutton I think you redacted bits, but FYI the log above contains parts of code from your project.

It looks like this is the error:

===== CRASH =====
si_signo=Segmentation fault(11), si_code=SEGV_MAPERR(1), si_addr=0x2bc

This same error was also recently posted at #61426 (comment) where @Conrad598 noted:

It happens when trying to use custom_lint. (I haven't tried with other plugins)

Using dart analyze --no-use-aot-snapshot appears to fix the issue.

So I wonder if this is somehow related to the AOT snapshot (IIRC, this recently became the default?).

[DanTup]

I also wonder if there should be more output than this (like a stack trace)? I was just looking at the code that triggers the notification that probably led you to this log file, and it seems to capture the output in exit and not close of the process, and I wonder if this might prevent stderr from having been drained.

@bsutton if you can reproduce this fairly easily, it might be worth adding:

"dart.analyzerLogFile": "logs/analyzer.txt",

To your Workspace Settings and then checking that log when it happens to see whether it has more than just the two lines above related to the crash.

[mraleph]

Additionally you could try to enable core dumps and look at the coredump in the gdb, to see where this happens. We have possibility that there is a VM bug. Another possibility worth investigating is races of some sort (e.g. snapshot is creation and starting from snapshot is somehow racy in the analyzer).

[bsutton]

@mraleph how do I enable core dumps for analyzer?

[mraleph]

Depends on particulars of your Linux distro. man core gives in depth overview. But there are usually two main points of configuration: RLIMIT_CORE must be set to large number or unlimited (check output of ulimit -c) and /proc/sys/kernel/core_pattern should be something meaningful.

Setting RLIMIT_CORE I guess requires either editing your profile script and adding ulimit -c unlimited there or editing /etc/limits.conf (or /etc/security/limits.conf).

Then you check what's in core_pattern, e.g. on my system it is redirected to systemd-coredump

$ cat /proc/sys/kernel/core_pattern
|/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %d %F

You can then choose to figure out how to configure that, but I instead just do:

$ mkdir -p /tmp/cores
$ echo "/tmp/cores/core.%e.%p.%t" | sudo tee /proc/sys/kernel/core_pattern

And then when things crash the core is written into /tmp/cores and you get something like core.dartaotruntime.$pid.$timestamp written by the kernel.

Then you can load it into GDB or LLDB and poke around. Mostly I am interested in backtrace

$ gdb $(which dartaotruntime) core.dartaotruntime.xyz.abc
...
(gdb) bt

[Hannnes1]

I think I just started having the same issue in neovim:

[ERROR][2025-11-13 11:02:19] ...p/_transport.lua:36     "rpc"   "dart"  "stderr"        "\n===== CRASH =====\nsi_signo=Segmentation fault(11), si_code=SEGV_MAPERR(1), si_addr=0x2bc\n"

Not sure if it's relevant, but here is my Neovim config.

I was unable to reproduce the issue in VSCode on the same system, but the same Neovim config (with the same Dart and Flutter version) works on Mac.

I tried to get a backtrace from gdb, but bt returns No stack.

[mraleph]

I tried to get a backtrace from gdb, but bt returns No stack.

That's weird. Can you post the whole output from the gdb - maybe core file failed to load?

[Hannnes1]

I tried to get a backtrace from gdb, but bt returns No stack.

That's weird. Can you post the whole output from the gdb - maybe core file failed to load?

Ah, I didn't have dartaotruntime. I modified the command to be gdb /home/hannes/.puro/envs/stable/flutter/bin/cache/dart-sdk/bin/dart /tmp/cores/core.DartWorker.306096.1763031024 instead. I think that's correct.

Then I get this:

GDB Output

GNU gdb (GDB) 16.3
Copyright (C) 2024 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
    <http://www.gnu.org/software/gdb/documentation/>.

For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /home/hannes/.puro/envs/stable/flutter/bin/cache/dart-sdk/bin/dart...

This GDB supports auto-downloading debuginfo from the following URLs:
  <https://debuginfod.archlinux.org>
Enable debuginfod for this session? (y or [n]) y
Debuginfod has been enabled.
To make this setting permanent, add 'set debuginfod enabled on' to .gdbinit.
(No debugging symbols found in /home/hannes/.puro/envs/stable/flutter/bin/cache/dart-sdk/bin/dart)
[New LWP 306280]
[New LWP 306108]
[New LWP 306192]
[New LWP 306096]
[New LWP 306097]
[New LWP 306281]
[New LWP 306102]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/home/hannes/.puro/envs/stable/flutter/bin/cache/dart-sdk/bin/dart language-server --protocol=lsp'.
Program terminated with signal SIGABRT, Aborted.
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
44            return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0;
[Current thread is 1 (Thread 0x7fe24797e6c0 (LWP 306280))]
(gdb) thread apply all bt

Thread 7 (Thread 0x7fe28817f6c0 (LWP 306102)):
#0  __GI___getdents64 (fd=8, buf=buf@entry=0x7fe27008dd80, nbytes=<optimized out>) at ../sysdeps/unix/sysv/linux/getdents64.c:32
#1  0x00007fe28ace48c5 in __readdir64_unlocked (dirp=0x7fe27008dd50) at ../sysdeps/unix/sysv/linux/readdir64.c:43
#2  __GI___readdir64 (dirp=<optimized out>) at ../sysdeps/unix/sysv/linux/readdir64.c:72
#3  0x00005598d4dd2196 in ?? ()
#4  0x00005598d4dd084b in ?? ()
#5  0x00005598d4dd0625 in ?? ()
#6  0x00005598d4e2257f in ?? ()
#7  0x00007fe28a3f875b in stub CallAutoScopeNative () from /home/hannes/.puro/shared/caches/cb467e31a54207dc987aca5bb0941c4d2e3fd9ed/dart-sdk/bin/snapshots/dartdev_aot.dart.snapshot
#8  0x00007fe283fbab38 in _Directory._fillWithDirectoryListing () at dart:io-patch/directory_patch.dart:49
#9  0x00007fe283fbaac3 in _Directory.listSync () at dart:io/directory_impl.dart:273
#10 0x00007fe283f663cc in _PhysicalFolder.getChildren () at package:analyzer/file_system/physical_file_system.dart:271
#11 0x00007fe283f86797 in _OverlayFolder.getChildren () at package:analyzer/file_system/overlay_file_system.dart:291
#12 0x00007fe283ba7f89 in ContextRootImpl._includedFilesInFolder () at package:analyzer/src/dart/analysis/context_root.dart:103
#13 0x00007fe28396724d in _SyncStarIterator.moveNext () at dart:async-patch/async_patch.dart:597
#14 0x00007fe283ceaba1 in ContextManagerImpl._createAnalysisContexts.performContextRebuildGuarded.performContextRebuild () at package:analysis_server/src/context_manager.dart:628
#15 0x00007fe283fc3f04 in _SuspendState._createAsyncStarCallback.<anonymous closure> () at dart:async-patch/async_patch.dart:408
#16 0x00007fe283692b09 in _rootRunUnary () at dart:async/zone.dart:1538
#17 0x00007fe283692c15 in _rootRunUnary () at dart:async/zone.dart:1531
#18 0x00007fe28369319d in _CustomZone.runUnary () at dart:async/zone.dart:1429
#19 _FutureListener.handleValue () at dart:async/future_impl.dart:222
#20 0x00007fe283692f70 in Future._propagateToListeners.handleValueCallback () at dart:async/future_impl.dart:948
#21 0x00007fe283660ec1 in Future._propagateToListeners () at dart:async/future_impl.dart:977
#22 0x00007fe283695abc in Future._completeWithValue () at dart:async/future_impl.dart:720
#23 0x00007fe283fc42a6 in _SuspendState._returnAsyncNotFuture () at dart:async-patch/async_patch.dart:392
#24 0x00007fe28366089d in stub _iso_stub_ReturnAsyncNotFutureStub () at dart:core-patch/lib_prefix.dart:61
#25 0x00007fe283fc3f04 in _SuspendState._createAsyncStarCallback.<anonymous closure> () at dart:async-patch/async_patch.dart:408
#26 0x00007fe283692b09 in _rootRunUnary () at dart:async/zone.dart:1538
#27 0x00007fe283692c15 in _rootRunUnary () at dart:async/zone.dart:1531
#28 0x00007fe28369319d in _CustomZone.runUnary () at dart:async/zone.dart:1429
#29 _FutureListener.handleValue () at dart:async/future_impl.dart:222
#30 0x00007fe283692f70 in Future._propagateToListeners.handleValueCallback () at dart:async/future_impl.dart:948
#31 0x00007fe283660ec1 in Future._propagateToListeners () at dart:async/future_impl.dart:977
#32 0x00007fe283695abc in Future._completeWithValue () at dart:async/future_impl.dart:720
#33 0x00007fe283fc42a6 in _SuspendState._returnAsyncNotFuture () at dart:async-patch/async_patch.dart:392
#34 0x00007fe28366089d in stub _iso_stub_ReturnAsyncNotFutureStub () at dart:core-patch/lib_prefix.dart:61
#35 0x00007fe283fc3f04 in _SuspendState._createAsyncStarCallback.<anonymous closure> () at dart:async-patch/async_patch.dart:408
#36 0x00007fe283692b09 in _rootRunUnary () at dart:async/zone.dart:1538
#37 0x00007fe283692c15 in _rootRunUnary () at dart:async/zone.dart:1531
#38 0x00007fe28369319d in _CustomZone.runUnary () at dart:async/zone.dart:1429
#39 _FutureListener.handleValue () at dart:async/future_impl.dart:222
#40 0x00007fe283692f70 in Future._propagateToListeners.handleValueCallback () at dart:async/future_impl.dart:948
#41 0x00007fe283660ec1 in Future._propagateToListeners () at dart:async/future_impl.dart:977
#42 0x00007fe283695abc in Future._completeWithValue () at dart:async/future_impl.dart:720
#43 0x00007fe283695a33 in Future._asyncCompleteWithValue.<anonymous closure> () at dart:async/future_impl.dart:804
#44 0x00007fe283693701 in _rootRun () at dart:async/zone.dart:1525
#45 0x00007fe2836937d4 in _rootRun () at dart:async/zone.dart:1516
#46 0x00007fe283f1b4fe in _CustomZone.run () at dart:async/zone.dart:1422
#47 0x00007fe283eeac80 in _CustomZone.runGuarded () at dart:async/zone.dart:1321
#48 0x00007fe283f248af in _CustomZone.bindCallbackGuarded.<anonymous closure> () at dart:async/zone.dart:1362
#49 0x00007fe28365ef30 in _microtaskLoop () at dart:async/schedule_microtask.dart:40
#50 0x00007fe28365eda1 in _startMicrotaskLoop () at dart:async/schedule_microtask.dart:49
#51 0x00007fe28365ed67 in _startMicrotaskLoop () at dart:async/schedule_microtask.dart:44
#52 0x00007fe28365bf4e in _runPendingImmediateCallback () at dart:isolate-patch/isolate_patch.dart:127
#53 _Timer._runTimers () at dart:isolate-patch/timer_impl.dart:430
#54 0x00007fe28365bc1e in _Timer._handleMessage () at dart:isolate-patch/timer_impl.dart:454
#55 0x00007fe28365bba7 in _Timer._handleMessage () at dart:isolate-patch/timer_impl.dart:444
#56 0x00007fe283ffb43c in _Closure.call () at dart:core-patch/function.dart:1
#57 0x00007fe28365b521 in _RawReceivePort._handleMessage () at dart:isolate-patch/isolate_patch.dart:193
#58 0x00007fe28a3f85f1 in stub InvokeDartCode () from /home/hannes/.puro/shared/caches/cb467e31a54207dc987aca5bb0941c4d2e3fd9ed/dart-sdk/bin/snapshots/dartdev_aot.dart.snapshot
#59 0x00005598d4e04930 in ?? ()
#60 0x00005598d4e0603c in ?? ()
#61 0x00005598d4e109bb in ?? ()
#62 0x00005598d4e15a30 in ?? ()
#63 0x00005598d4e15ccb in ?? ()
#64 0x00005598d4e8a087 in ?? ()
#65 0x00005598d4e8a2e2 in ?? ()
#66 0x00005598d4e69fb9 in ?? ()
#67 0x00007fe28ac969cb in start_thread (arg=<optimized out>) at pthread_create.c:448
#68 0x00007fe28ad1aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 6 (Thread 0x7fe2616ff6c0 (LWP 306281)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fe28ac931ac in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=a3@entry=0, a4=<optimized out>, a5=a5@entry=0, a6=a6@entry=4294967295, nr=202) at cancellation.c:49
#2  0x00007fe28ac9381c in __futex_abstimed_wait_common64 (private=0, futex_word=0x7fe270019700, expected=0, op=<optimized out>, abstime=0x7fe2616fe900, cancel=true) at futex-internal.c:57
#3  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7fe270019700, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7fe2616fe900, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#4  0x00007fe28ac9387f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7fe270019700, expected=expected@entry=0, clockid=clockid@entry=1, abstime=abstime@entry=0x7fe2616fe900, private=private@entry=0) at futex-internal.c:139
#5  0x00007fe28ac960e8 in __pthread_cond_wait_common (cond=0x7fe2700196e0, mutex=0x7fe270002bf8, clockid=<optimized out>, abstime=0x7fe2616fe900) at pthread_cond_wait.c:421
#6  ___pthread_cond_timedwait64 (cond=0x7fe2700196e0, mutex=0x7fe270002bf8, abstime=0x7fe2616fe900) at pthread_cond_wait.c:478
#7  0x00005598d4c62493 in ?? ()
#8  0x00005598d4e8a198 in ?? ()
#9  0x00005598d4e8a2e2 in ?? ()
#10 0x00005598d4e69fb9 in ?? ()
#11 0x00007fe28ac969cb in start_thread (arg=<optimized out>) at pthread_create.c:448
#12 0x00007fe28ad1aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

--Type <RET> for more, q to quit, c to continue without paging--c
Thread 5 (Thread 0x7fe289d476c0 (LWP 306097)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fe28ac931ac in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=0, a6=a6@entry=0, nr=232) at cancellation.c:49
#2  0x00007fe28ac931f4 in __syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=0, a6=a6@entry=0, nr=232) at cancellation.c:75
#3  0x00007fe28ad1acf5 in epoll_wait (epfd=<optimized out>, events=<optimized out>, maxevents=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#4  0x00005598d4c64ad8 in ?? ()
#5  0x00005598d4dda9f7 in ?? ()
#6  0x00007fe28ac969cb in start_thread (arg=<optimized out>) at pthread_create.c:448
#7  0x00007fe28ad1aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 4 (Thread 0x7fe28ae460c0 (LWP 306096)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fe28ac931ac in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=0, a6=a6@entry=4294967295, nr=202) at cancellation.c:49
#2  0x00007fe28ac9381c in __futex_abstimed_wait_common64 (private=0, futex_word=0x7ffc5096a780, expected=<optimized out>, op=<optimized out>, abstime=0x0, cancel=true) at futex-internal.c:57
#3  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7ffc5096a780, expected=<optimized out>, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#4  0x00007fe28ac9387f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7ffc5096a780, expected=<optimized out>, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#5  0x00007fe28ac95ede in __pthread_cond_wait_common (cond=0x7ffc5096a760, mutex=0x7ffc5096a730, clockid=0, abstime=0x0) at pthread_cond_wait.c:421
#6  ___pthread_cond_wait (cond=0x7ffc5096a760, mutex=0x7ffc5096a730) at pthread_cond_wait.c:453
#7  0x00005598d4c624a2 in ?? ()
#8  0x00005598d4eca5ad in Dart_RunLoop ()
#9  0x00005598d4c5ddfe in ?? ()
#10 0x00005598d4c5d502 in ?? ()
#11 0x00005598d4c5cb4a in ?? ()
#12 0x00005598d4c5d619 in ?? ()
#13 0x00007fe28ac27675 in __libc_start_call_main (main=main@entry=0x5598d4c5d610, argc=argc@entry=3, argv=argv@entry=0x7ffc5096ac28) at ../sysdeps/nptl/libc_start_call_main.h:58
#14 0x00007fe28ac27729 in __libc_start_main_impl (main=0x5598d4c5d610, argc=3, argv=0x7ffc5096ac28, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc5096ac18) at ../csu/libc-start.c:360
#15 0x00005598d4c5b7a9 in ?? ()

Thread 3 (Thread 0x7fe28287f6c0 (LWP 306192)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fe28ac931ac in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=a3@entry=26, a4=<optimized out>, a5=a5@entry=0, a6=a6@entry=4294967295, nr=202) at cancellation.c:49
#2  0x00007fe28ac9381c in __futex_abstimed_wait_common64 (private=0, futex_word=0x7fe270001f20, expected=26, op=<optimized out>, abstime=0x7fe28287e8b0, cancel=true) at futex-internal.c:57
#3  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7fe270001f20, expected=expected@entry=26, clockid=clockid@entry=1, abstime=abstime@entry=0x7fe28287e8b0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#4  0x00007fe28ac9387f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7fe270001f20, expected=expected@entry=26, clockid=clockid@entry=1, abstime=abstime@entry=0x7fe28287e8b0, private=private@entry=0) at futex-internal.c:139
#5  0x00007fe28ac960e8 in __pthread_cond_wait_common (cond=0x7fe270001f00, mutex=0x7fe284002568, clockid=<optimized out>, abstime=0x7fe28287e8b0) at pthread_cond_wait.c:421
#6  ___pthread_cond_timedwait64 (cond=0x7fe270001f00, mutex=0x7fe284002568, abstime=0x7fe28287e8b0) at pthread_cond_wait.c:478
#7  0x00005598d4c62493 in ?? ()
#8  0x00005598d4e0ce08 in ?? ()
#9  0x00005598d4e89fd0 in ?? ()
#10 0x00005598d4e8a2e2 in ?? ()
#11 0x00005598d4e69fb9 in ?? ()
#12 0x00007fe28ac969cb in start_thread (arg=<optimized out>) at pthread_create.c:448
#13 0x00007fe28ad1aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 2 (Thread 0x7fe26c1ff6c0 (LWP 306108)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fe28ac931ac in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=a5@entry=0, a6=a6@entry=4294967295, nr=202) at cancellation.c:49
#2  0x00007fe28ac9381c in __futex_abstimed_wait_common64 (private=0, futex_word=0x55990ff18704, expected=<optimized out>, op=<optimized out>, abstime=0x0, cancel=true) at futex-internal.c:57
#3  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x55990ff18704, expected=<optimized out>, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#4  0x00007fe28ac9387f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x55990ff18704, expected=<optimized out>, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#5  0x00007fe28ac95ede in __pthread_cond_wait_common (cond=0x55990ff186e0, mutex=0x55990ff186b0, clockid=0, abstime=0x0) at pthread_cond_wait.c:421
#6  ___pthread_cond_wait (cond=0x55990ff186e0, mutex=0x55990ff186b0) at pthread_cond_wait.c:453
#7  0x00005598d4c624a2 in ?? ()
#8  0x00005598d4c6bda6 in ?? ()
#9  0x00005598d4dda9f7 in ?? ()
#10 0x00007fe28ac969cb in start_thread (arg=<optimized out>) at pthread_create.c:448
#11 0x00007fe28ad1aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 1 (Thread 0x7fe24797e6c0 (LWP 306280)):
#0  __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44
#1  0x00007fe28ac98a13 in __pthread_kill_internal (threadid=<optimized out>, signo=6) at pthread_kill.c:89
#2  0x00007fe28ac3e410 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#3  0x00007fe28ac2557a in __GI_abort () at abort.c:77
#4  0x00005598d4c67ed0 in ?? ()
#5  <signal handler called>
#6  0x00007fe28afacaa3 in check_match (undef_name=undef_name@entry=0x5598d4b1b564 "_kDartVmSnapshotData", ref=ref@entry=0x0, version=version@entry=0x0, flags=flags@entry=2, type_class=type_class@entry=0, sym=sym@entry=0x2b8, symidx=3, strtab=0x1e8 <error: Cannot access memory at address 0x1e8>, map=0x7fe2851bf6f0, versioned_sym=0x7fe24797d258, num_versions=0x7fe24797d254) at dl-lookup.c:71
#7  0x00007fe28aface64 in do_lookup_x (undef_name=undef_name@entry=0x5598d4b1b564 "_kDartVmSnapshotData", new_hash=new_hash@entry=1926542663, old_hash=old_hash@entry=0x7fe24797d338, ref=0x0, result=result@entry=0x7fe24797d340, scope=<optimized out>, i=0, version=0x0, flags=2, skip=<optimized out>, type_class=<optimized out>, undef_map=<optimized out>) at dl-lookup.c:454
#8  0x00007fe28afad8c2 in _dl_lookup_symbol_x (undef_name=0x5598d4b1b564 "_kDartVmSnapshotData", undef_map=0x7fe2851bf6f0, ref=0x7fe24797d3f8, symbol_scope=<optimized out>, version=0x0, type_class=0, flags=2, skip_map=0x0) at dl-lookup.c:789
#9  0x00007fe28ad69f7e in do_sym (handle=<optimized out>, name=<optimized out>, who=0x5598d4c637c3, vers=vers@entry=0x0, flags=flags@entry=2) at dl-sym.c:153
#10 0x00007fe28ad6a441 in _dl_sym (handle=<optimized out>, name=<optimized out>, who=<optimized out>) at dl-sym.c:195
#11 0x00007fe28ac92e00 in dlsym_doit (a=a@entry=0x7fe24797d6a0) at dlsym.c:40
#12 0x00007fe28afa4456 in __GI__dl_catch_exception (exception=exception@entry=0x7fe24797d5e0, operate=0x7fe28ac92de0 <dlsym_doit>, args=0x7fe24797d6a0) at dl-catch.c:241
#13 0x00007fe28afa45a9 in _dl_catch_error (objname=0x7fe24797d648, errstring=0x7fe24797d650, mallocedp=0x7fe24797d647, operate=<optimized out>, args=<optimized out>) at dl-catch.c:260
#14 0x00007fe28ac927f3 in _dlerror_run (operate=operate@entry=0x7fe28ac92de0 <dlsym_doit>, args=args@entry=0x7fe24797d6a0) at dlerror.c:138
#15 0x00007fe28ac92e9e in dlsym_implementation (handle=<optimized out>, name=<optimized out>, dl_caller=<optimized out>) at dlsym.c:54
#16 ___dlsym (handle=<optimized out>, name=<optimized out>) at dlsym.c:68
#17 0x00005598d4c637c3 in ?? ()
#18 0x00005598d4c5c3cc in ?? ()
#19 0x00005598d4c5c09c in ?? ()
#20 0x00005598d4c5c33e in ?? ()
#21 0x00005598d4c5d75d in ?? ()
#22 0x00005598d4c5d062 in ?? ()
#23 0x00005598d4deb691 in ?? ()
#24 0x00005598d4e8a087 in ?? ()
#25 0x00005598d4e8a2e2 in ?? ()
#26 0x00005598d4e69fb9 in ?? ()
#27 0x00007fe28ac969cb in start_thread (arg=<optimized out>) at pthread_create.c:448
#28 0x00007fe28ad1aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

[mraleph]

@Hannnes1 thanks a bunch. From the looks of it the crash is inside dlsym implementation. I think the most likely candidate is that we are overwriting the snapshot as we are trying to use it. @srawlins I would recommend reviewing the code to make sure that we never race (re)compilation and startup of the plugin. I'd recommend using uniquely named snapshot files if you are not doing it yet.