[INFO] cloning repository https://github.com/pyk/rust-dining-philosophers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pyk/rust-dining-philosophers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpyk%2Frust-dining-philosophers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpyk%2Frust-dining-philosophers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed9852e69e4c4bef3cbca76dea1fb0241feb8e57
[INFO] checking pyk/rust-dining-philosophers against master#be181dd75c83d72fcc95538e235768bc367b76b9 for pr-140208
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpyk%2Frust-dining-philosophers" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-3-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


failed to checkout https://github.com/pyk/rust-dining-philosophers

Caused by:
    command failed: exit status: 128