x/build: TryBots consistently failing on misc-compile-android

[bcmills]

CL 205798 added misc-compile TryBots for android (#25963), and a coordinator containing that CL has now been deployed.

Unfortunately, misc-compile-android is consistently failing on the android/386 configuration:
https://storage.googleapis.com/go-build-log/5451ccaa/misc-compile-android_aac075f2.log

I tried to git bisect the failure locally, but as far as I can tell this build configuration has never worked. We should either get it working ASAP or roll back the TryBots for the failing configurations.

CC @bradfitz @dmitshur @cagedmantis @tklauser

[jeremyfaller]

Don't know if it helps, but I ran into this today, and tried my CL with with a gomote push and it worked successfully. Perhaps the difference in the trybot setup from whatever gomote uses would be helpful to investigate.

[bcmills]

Nah, the build failure is 100% reproducible locally too.

cd $(go env GOROOT)/src && ./buildall.bash android-386

[gopherbot]

Change https://golang.org/cl/207377 mentions this issue: dashboard: remove misc-compile-android builder

[gopherbot]

Change https://golang.org/cl/257962 mentions this issue: src/buildall.bash: remove mobile filter