[INFO] cloning repository https://github.com/callumadair/symmetric-key
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/callumadair/symmetric-key" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcallumadair%2Fsymmetric-key", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcallumadair%2Fsymmetric-key'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a9a135f11c78130004fa65f5eaeef7493ebcf681
[INFO] checking callumadair/symmetric-key against master#ca77504943887037504c7fc0b9bf06dab3910373 for pr-145181
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcallumadair%2Fsymmetric-key" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-7-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


failed to checkout https://github.com/callumadair/symmetric-key

Caused by:
    command failed: exit status: 128