[INFO] cloning repository https://github.com/fuzzbuck/l4d2-bhop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fuzzbuck/l4d2-bhop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuzzbuck%2Fl4d2-bhop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuzzbuck%2Fl4d2-bhop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 92dbf8f00bd341776edc58c8883067ee3e3dadae
[INFO] checking fuzzbuck/l4d2-bhop against master#9bfa31f632912180dc742809bcc51a97f2d7079d for pr-140151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffuzzbuck%2Fl4d2-bhop" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-4-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


failed to checkout https://github.com/fuzzbuck/l4d2-bhop

Caused by:
    command failed: exit status: 128