[INFO] cloning repository https://github.com/alexwlchan/rust-on-glitch
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexwlchan/rust-on-glitch" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexwlchan%2Frust-on-glitch", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexwlchan%2Frust-on-glitch'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 331fecca5403b404fc5a53180147756ac45f4677
[INFO] testing alexwlchan/rust-on-glitch against master#b03b3a7ec92682be2917540b679478d41c95a30c for pr-137122-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexwlchan%2Frust-on-glitch" "/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/alexwlchan/rust-on-glitch

Caused by:
    command failed: exit status: 128