20def86..f56a09d master -> origin/master Checking out f56a09dd as master... Skipping Git submodules setup Checking cache for default... time="2020-04-05T14:40:44+08:00" level=error msg="Docker executor: prebuilt image helpers will be loaded from /var/lib/gitlab-runner." Successfully extracted cache $ rustc --version bash: line 78: rustc: command not found ERROR: Job failed: exit status 1