CI is broken #937
Description
CircleCI has started to fail in a strange way when I pushed a new branch:
https://circleci.com/gh/gopherjs/gopherjs/tree/ci-go1.12.9
I restarted the master branch job, which passed successfully 28 days ago, and it fails in the same way. The second step says "Error executing build steps" and its details show:
CircleCI was unable to run the job runner because we were unable
to execute commands in build container.
This typically means that the build container entrypoint or command
is terminating the container prematurely, or interfering with executed
commands. Consider clearing entrypoint/command values and try again.