Ian Hickson this is the output
PS D:\> flutter upgrade --verbose
[Â +14 ms] [D:\flutter\] git rev-parse --abbrev-ref --symbolic @{u}
[ +130 ms] Exit code 128 from: git rev-parse --abbrev-ref --symbolic @{u}
[Â +11 ms] fatal: no upstream configured for branch 'master'
[Â Â +1 ms] [D:\flutter\] git rev-parse --abbrev-ref HEAD
[ +120 ms] Exit code 0 from: git rev-parse --abbrev-ref HEAD
[Â Â +1 ms] master
[Â Â +1 ms] [D:\flutter\] git log -n 1 --pretty=format:%H
[ +116 ms] Exit code 0 from: git log -n 1 --pretty=format:%H
[Â Â +1 ms] 3001b3307dc1d47fcde9697dd2a82b77450c2a57
[Â Â Â Â ] [D:\flutter\] git log -n 1 --pretty=format:%ar
[ +101 ms] Exit code 0 from: git log -n 1 --pretty=format:%ar
[Â Â +1 ms] 6 days ago
[Â Â +2 ms] [D:\flutter\] git describe --match v*.*.* --first-parent --long --tags
[Â +97 ms] Exit code 0 from: git describe --match v*.*.* --first-parent --long --tags
[Â Â +1 ms] v0.0.22-0-g3001b3307
[ +213 ms] [D:\flutter\] git rev-parse @{u}
[ +117 ms] fatal: no upstream configured for branch 'master'
[Â +16 ms] "flutter upgrade" took 187ms.
#0Â Â Â throwToolExit (package:flutter_tools/src/base/common.dart:28)
#1Â Â Â UpgradeCommand.runCommand (package:flutter_tools/src/commands/upgrade.dart:37)
<asynchronous suspension>
#2Â Â Â FlutterCommand.verifyThenRunCommand (package:flutter_tools/src/runner/flutter_command.dart:279)
<asynchronous suspension>
#3Â Â Â FlutterCommand.run (package:flutter_tools/src/runner/flutter_command.dart:219)
<asynchronous suspension>
#4Â Â Â CommandRunner.runCommand (package:args/command_runner.dart:194)
<asynchronous suspension>
#5Â Â Â FlutterCommandRunner.runCommand (package:flutter_tools/src/runner/flutter_command_runner.dart:284)
<asynchronous suspension>
#6Â Â Â CommandRunner.run.<anonymous closure> (package:args/command_runner.dart:109)
#7Â Â Â new Future.sync (dart:async/future.dart:222)
#8Â Â Â CommandRunner.run (package:args/command_runner.dart:109)
#9Â Â Â FlutterCommandRunner.run (package:flutter_tools/src/runner/flutter_command_runner.dart:166)
#10Â Â Â run.<anonymous closure> (package:flutter_tools/runner.dart:89)
<asynchronous suspension>
#11Â Â Â AppContext._run (package:flutter_tools/src/base/context.dart:76)
<asynchronous suspension>
#12Â Â Â AppContext.runInZone.<anonymous closure> (package:flutter_tools/src/base/context.dart:66)
#13Â Â Â _rootRun (dart:async/zone.dart:1126)
#14Â Â Â _CustomZone.run (dart:async/zone.dart:1023)
#15Â Â Â runZoned (dart:async/zone.dart:1501)
#16Â Â Â AppContext.runInZone (package:flutter_tools/src/base/context.dart:65)
#17Â Â Â run (package:flutter_tools/runner.dart:60)
<asynchronous suspension>
#18Â Â Â main (package:flutter_tools/executable.dart:44)
<asynchronous suspension>
#19Â Â Â main (file:///D:/flutter/packages/flutter_tools/bin/flutter_tools.dart:16)
#20Â Â Â _startIsolate.<anonymous closure> (dart:isolate-patch/dart:isolate/isolate_patch.dart:275)
#21Â Â Â _RawReceivePortImpl._handleMessage (dart:isolate-patch/dart:isolate/isolate_patch.dart:163)
[ +261 ms] ensureAnalyticsSent: 251ms
[Â Â +6 ms] exiting with code 1