[INFO] cloning repository https://github.com/evelynphs/tutorial10-timer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/evelynphs/tutorial10-timer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevelynphs%2Ftutorial10-timer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevelynphs%2Ftutorial10-timer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e992f6d149adbc386ab224092c0a2f159422b77f
[INFO] checking evelynphs/tutorial10-timer against master#a26e97be8826d408309fffbd8168362365719f50 for pr-136776
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fevelynphs%2Ftutorial10-timer" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-6-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


failed to checkout https://github.com/evelynphs/tutorial10-timer

Caused by:
    command failed: exit status: 128