[INFO] cloning repository https://github.com/twilson-palantir/turbot-hearts
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/twilson-palantir/turbot-hearts" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwilson-palantir%2Fturbot-hearts", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwilson-palantir%2Fturbot-hearts'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31ad66eb72f5ed6396f4f01eb7d713255f644e5a
[INFO] checking twilson-palantir/turbot-hearts against master#040e2f8b9ff2d76fbe2146d6003e297ed4532088 for pr-143619
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftwilson-palantir%2Fturbot-hearts" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-1-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


failed to checkout https://github.com/twilson-palantir/turbot-hearts

Caused by:
    command failed: exit status: 128