flutter pub publish执行Ubuntu无限卡顿/Windows报Error 66问题求助

环境 #

• flutter pub version 输出：Pub 2.14.3
• 操作系统版本：Ubuntu 20.04 LTS、Windows 10 Pro 20H2

问题描述 #

基于plugin模板开发Flutter插件包，无法正常发布到pub.dev平台，具体故障表现如下：

Ubuntu系统故障 #

执行 flutter pub publish --dry-run -v 或 flutter pub pub publish --dry-run -v 命令，即便提前执行 flutter pub cache repair 和 flutter pub pub cache repair 清理缓存，命令运行到如下日志后就无限卡顿，静置1小时也无任何后续输出：

[  +11 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[        ] stable
[ +165 ms] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IOSEngineArtifacts' `is` not required, skipping update.
[        ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[   +6 ms] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'WindowsUwpEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[ +145 ms] Artifact Instance of 'MaterialFonts' is not required, skipping update.
[   +1 ms] Artifact Instance of 'GradleWrapper' is not required, skipping update.
[        ] Artifact Instance of 'AndroidGenSnapshotArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'AndroidInternalBuildArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterWebSdk' is not required, skipping update.
[        ] Artifact Instance of 'FlutterSdk' is not required, skipping update.
[        ] Artifact Instance of 'WindowsEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'WindowsUwpEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxEngineArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'LinuxFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'MacOSFuchsiaSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerSDKArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FlutterRunnerDebugSymbols' is not required, skipping update.
[        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'IosUsbArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'FontSubsetArtifacts' is not required, skipping update.
[        ] Artifact Instance of 'PubDependencies' is not required, skipping update.
[  +74 ms] Using /home/zues/snap/flutter/common/flutter/.pub-cache for the pub cache.
[        ] executing: /home/zues/snap/flutter/common/flutter/bin/cache/dart-sdk/bin/pub publish --dry-run -v
FINE: Pub 2.14.3
FINE: Archiving and publishing Instance of 'Package'.
MSG : Publishing lexactivator 3.0.0 to https://pub.dartlang.org:
***insert directory tree here
FINE: Creating .tar.gz stream containing:
***insert project files here
IO  : Spawning "git --version" in /home/zues/lexactivator/.
IO  : Finished git. Exit code 0.
    | stdout:
    | | git version 2.17.1
    | Nothing output on stderr.
FINE: Determined git command git.
IO  : Spawning "git check-ignore --quiet ." in /home/zues/lexactivator/.
IO  : Finished git. Exit code 1.
    | Nothing output on stdout.
    | Nothing output on stderr.
IO  : Spawning "git ls-files --cached --exclude-standard --recurse-submodules" in /home/zues/lexactivator/.
IO  : Finished git. Exit code 0.
    | stdout:
    | | .gitignore
    | | CHANGELOG.md
    ***insert project files here
    | Nothing output on stderr.

项目根目录pubspec.yaml配置（非example目录下的pubspec文件）如下：

name: lexactivator
description: LexActivator API wrapper for Dart. Integrates Crypltex's services into the Dart language.
version: 3.0.0
homepage: https://cryptlex.com

environment:
  sdk: ">=2.14.0 <3.0.0"
  flutter: ">=2.5.0"

dependencies:
  flutter:
    sdk: flutter
  ffigen: ^4.0.0  

dev_dependencies:
  flutter_lints: ^1.0.0
  
  
flutter:
  plugin:
    platforms:
      linux:
        pluginClass: LexactivatorPlugin
      macos:
        pluginClass: LexactivatorPlugin
      windows:
        pluginClass: LexactivatorPlugin

Windows系统故障 #

执行相同命令，会返回如下错误日志，最终退出码为66：

ERR : Directory listing failed, path = '.\example\windows\flutter\ephemeral\.plugin_symlinks\lexactivator\example\windows\flutter\ephemeral\.plugin_symlinks\lexactivator\example\windows\flutter\ephemeral\.plugin_symlinks\lexactivator\windows\include\lexactivator\*' (OS Error: The system cannot find the path specified.
    | , errno = 3)
FINE: Exception type: FileSystemException
FINE: dart:io
 _Directory.listSync
    | package:pub/src/validator/gitignore.dart 43:50
 GitignoreValidator.validate.<fn>
    | package:pub/src/ignore.dart 293:28
 Ignore.listFiles
    | package:pub/src/validator/gitignore.dart 41:43
 GitignoreValidator.validate
    | package:pub/src/validator.dart 156:64
 Validator.runAll.<fn>
    | dart:async
 Future.wait
    | package:pub/src/validator.dart 156:19
 Validator.runAll
    | package:pub/src/command/lish.dart 245:21
 LishCommand._validate
    | package:pub/src/command/lish.dart 219:15
 LishCommand.runProtected
    | dart:async
 new Future.sync
    | package:pub/src/utils.dart 112:12
 captureErrors.wrappedCallback
    | package:stack_trace
 Chain.capture
    | package:pub/src/utils.dart 125:11
 captureErrors
    | package:pub/src/command.dart 171:13
 PubCommand.run
    | package:args/command_runner.dart 209:27
 CommandRunner.runCommand
    | package:pub/src/command_runner.dart 168:24
 PubCommandRunner.runCommand
    | package:pub/src/command_runner.dart 153:20
 PubCommandRunner.run
    | package:dartdev/dartdev.dart 45:56
 runDartdev
    | C:\b\s\w\ir\cache\builder\sdk\pkg\dartdev\bin\dartdev.dart 11:9 
 main
    | ===== asynchronous gap ===========================
    | dart:async
 Future.catchError
    | package:pub/src/utils.dart 112:52
 captureErrors.wrappedCallback
    | package:stack_trace
 Chain.capture
    | package:pub/src/utils.dart 125:11
 captureErrors
    | package:pub/src/command.dart 171:13
 PubCommand.run
    | package:args/command_runner.dart 209:27
 CommandRunner.runCommand
    | package:pub/src/command_runner.dart 168:24
 PubCommandRunner.runCommand
    | package:pub/src/command_runner.dart 153:20
 PubCommandRunner.run
    | package:dartdev/dartdev.dart 45:56
 runDartdev
    | C:\b\s\w\ir\cache\builder\sdk\pkg\dartdev\bin\dartdev.dart 11:9 
 main
[+8233 ms] "flutter publish" took 8,334ms.
[   +4 ms] pub finished with exit code 66
[   +2 ms] 
           #0      throwToolExit
           (package:flutter_tools/src/base/common.dart:10:3)
           #1      _DefaultPub.interactively
           (package:flutter_tools/src/dart/pub.dart:391:7)
           <asynchronous suspension>
           #2      PackagesForwardCommand.runCommand
           (package:flutter_tools/src/commands/packages.dart:247:5)   
           <asynchronous suspension>
           #3      FlutterCommand.run.<anonymous closure>

(package:flutter_tools/src/runner/flutter_command.dart:1125:27)       
           <asynchronous suspension>
           #4      AppContext.run.<anonymous closure>
           (package:flutter_tools/src/base/context.dart:150:19)       
           <asynchronous suspension>
           #5      CommandRunner.runCommand
           (package:args/command_runner.dart:209:13)
           <asynchronous suspension>
           #6      FlutterCommandRunner.runCommand.<anonymous closure>
(package:flutter_tools/src/runner/flutter_command_runner.dart:288:9)  
           <asynchronous suspension>
           #7      AppContext.run.<anonymous closure>
           (package:flutter_tools/src/base/context.dart:150:19)       
           <asynchronous suspension>
           #8      FlutterCommandRunner.runCommand

(package:flutter_tools/src/runner/flutter_command_runner.dart:236:5)  
           <asynchronous suspension>
           #9      run.<anonymous closure>.<anonymous closure>        
           (package:flutter_tools/runner.dart:62:9)
           <asynchronous suspension>
           #10     AppContext.run.<anonymous closure>
           (package:flutter_tools/src/base/context.dart:150:19)       
           <asynchronous suspension>
           #11     main (package:flutter_tools/executable.dart:92:3)  
           <asynchronous suspension>


[ +236 ms] ensureAnalyticsSent: 229ms
[   +6 ms] Running shutdown hooks
[   +1 ms] Shutdown hooks complete
[   +1 ms] exiting with code 66

预期行为与排查情况 #

目前公开渠道可查询到的 flutter pub publish 命令细节说明较少，按照现有公开资料，预期该命令要么执行成功，要么返回明确错误提示。但当前Ubuntu下无响应卡顿、Windows下返回的错误无对应参考资料。
最初使用Flutter dev渠道版本，误以为是版本不稳定导致的问题，切换到stable渠道并重建项目后问题仍未解决。

内容的提问来源于stack exchange，提问作者azan-n