analyzer-0.40.6/lib/src/error/best_practices_verifier.dart:258:50: Error: The property 'displayString' is defined in multiple extensions for 'TargetKind' and neither is more specific.

[insinfo]

webdev build
[SEVERE] Failed to precompile build_runner:build_runner:
[SEVERE] /root/.pub-cache/hosted/pub.dartlang.org/analyzer-0.40.6/lib/src/error/best_practices_verifier.dart:258:50: Error: The property 'displayString' is defined in multiple extensions for 'TargetKind' and neither is more specific.
[SEVERE]  - 'TargetKind' is from 'package:meta/meta_meta.dart' ('/root/.pub-cache/hosted/pub.dartlang.org/meta-1.7.0/lib/meta_meta.dart').
[SEVERE] Try using an explicit extension application of the wanted extension or hiding unwanted extensions from scope.
[SEVERE]         var kindNames = kinds.map((kind) => kind.displayString).toList()
[SEVERE]                                                  ^^^^^^^^^^^^^
[SEVERE] /root/.pub-cache/hosted/pub.dartlang.org/analyzer-0.40.6/lib/src/error/best_practices_verifier.dart:1917:14: Context: This is one of the extension members.
[SEVERE]   String get displayString {
[SEVERE]              ^^^^^^^^^^^^^
[SEVERE] /root/.pub-cache/hosted/pub.dartlang.org/meta-1.7.0/lib/meta_meta.dart:91:14: Context: This is one of the extension members.
[SEVERE]   String get displayString {
[SEVERE]              ^^^^^^^^^^^^^
[SEVERE] /root/.pub-cache/hosted/pub.dartlang.org/analyzer-0.40.6/lib/src/error/best_practices_verifier.dart:260:36: Error: The getter 'commaSeparatedWithOr' isn't defined for the class 'List<dynamic>'.
[SEVERE]  - 'List' is from 'dart:core'.
[SEVERE] Try correcting the name to the name of an existing getter, or defining a getter or field named 'commaSeparatedWithOr'.
[SEVERE]         var validKinds = kindNames.commaSeparatedWithOr;
[SEVERE]                                    ^^^^^^^^^^^^^^^^^^^^
Unhandled exception:
Bad state: Unable to start build daemon.
#0      _handleDaemonStartup (package:build_daemon/client.dart:82:5)
<asynchronous suspension>
#1      BuildDaemonClient.connect (package:build_daemon/client.dart:183:5)
<asynchronous suspension>
#2      BuildCommand.run (package:webdev/src/command/build_command.dart:59:20)
<asynchronous suspension>
#3      CommandRunner.runCommand (package:args/command_runner.dart:197:13)
<asynchronous suspension>
#4      _CommandRunner.runCommand (package:webdev/src/webdev_command_runner.dart:40:12)
<asynchronous suspension>
#5      main (file:///root/.pub-cache/hosted/pub.dartlang.org/webdev-2.7.2/bin/webdev.dart:19:16)
<asynchronous suspension>

• Dart SDK Version 2.12.4
• Whether you are using Linux
• Whether you are using Chrome

pubspec.yaml

name: cmpop_browser
description: A web app that uses AngularDart Components
# version: 1.0.0
# homepage: https://www.example.com

environment:
  sdk: ">=2.10.1 <3.0.0"

dependencies:
  angular: ^6.0.0
  angular_components: ^1.0.2
  angular_router: ^2.0.0
  angular_forms: ^3.0.0
  sembast_web: ^1.2.0
  angular_recaptcha: ^0.1.5
  stream_transform: #^0.0.19
  sass_builder: ^2.1.3
  intl: ^0.16.1
  uuid: ^2.2.2
  crossplat_objectid: ^2.1.4  
  http: ^0.12.2
  quiver: ^2.1.5

dev_dependencies: 
  angular_test: ^3.0.0                                                                                                 
  build_runner: ^1.10.4                                                                                                   
  build_test: ^1.3.0                                                                                              
  build_web_compilers: ^2.12.0                                                                                
  pedantic: ^1.9.2                                                                                               
  test: ^1.15.4

[epomeranz]

Hi Have the exact same error when trying to run build_runner on a flutter project. It's independent of what I'm building. I tried multiple different pubspec configurations.

[insinfo]

@epomeranz Workaround: I can make the issue disappear by pinning the meta package to an earlier release:

dev_dependencies:   
   meta: 1.6.0 

https://github.com/dart-lang/webdev/issues/1363 https://github.com/dart-lang/build/issues/3151

fixed https://github.com/dart-lang/sdk/issues/46687