45622 implicit-casts:false in flutter/lib/src/physics (cla: yes, framework)

45628 [flutter_tool] Crash less when git fails during ‘version’ (cla: yes, tool)

45633 update-packages run (cla: yes, team)

45642 Roll engine e136d637a873..27fa60793bcb (1 commits) (autoroller: commit, cla: yes)

45644 Add macOS tests (Part 1) (a: tests, cla: yes, f: cupertino, framework, waiting for tree to go green)

45646 Add variant testing to testWidgets (a: tests, cla: yes, framework)

45648 Add more documentation around layers. (cla: yes, framework, waiting for tree to go green)