Cannot build flutter_tools on Linux, Because flutter_tools depends on collection >=1.15.0-nnbd <1.15.0-nullsafety.2 which requires SDK version >=2.9.0-18.0 <=2.9.10, version solving failed. #62146
Description
AUGUST 7 UPDATE if you are experiencing this crash on dev release 1.21.0-1.0.pre, you can upgrade past it to a good dev tag via:
git pull
flutter --version
As of August 7, the latest dev tag is 1.21.0-7.0.pre:
Flutter 1.21.0-7.0.pre • channel dev • https://github.com/flutter/flutter.git
Framework • revision 5a6dfa35ca (4 days ago) • 2020-08-03 10:33:07 -0700
Engine • revision 083282e33b
Tools • Dart 2.10.0 (build 2.10.0-4.0.dev 365525432a)
UPDATE: This issue has been mitigated in the framework by rolling back the engine hash to an unaffected version. However, the latest engine build still has the wrong dart version: https://ci.chromium.org/p/flutter/builders/prod/Linux%20Host%20Engine/6083. I suspect we will have to delete the git caches of all the LUCI bots.
Building flutter tools is failing on linux
https://cirrus-ci.com/task/4955835350646784?command=setup#L337
flutter config --no-analytics
Downloading Dart SDK from Flutter engine dcc9a4048da890660f0880b4c2afed7c9470d335...
The current Dart SDK version is 2.10.0-0.0.dev.flutter-9dca49e71e.
Because flutter_tools depends on collection >=1.15.0-nnbd <1.15.0-nullsafety.2 which requires SDK version >=2.9.0-18.0 <=2.9.10, version solving failed.
Error: Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (9 tries left)
Resolving dependencies...
Seeing this on Cirrus and devicelab. Windows and macOS is passing.