[INFO] cloning repository https://github.com/ehntoo/rust-advent-of-code-2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ehntoo/rust-advent-of-code-2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fehntoo%2Frust-advent-of-code-2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fehntoo%2Frust-advent-of-code-2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6fc84e8e7619e9c8ddb78cfe16c395cb6ee6b83f
[INFO] checking ehntoo/rust-advent-of-code-2019 against master#46424fb5054f211ec836c5c03159f92e46bb35ac for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fehntoo%2Frust-advent-of-code-2019" "/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.bare' to 'false'


failed to checkout https://github.com/ehntoo/rust-advent-of-code-2019

Caused by:
    command failed: exit status: 128