[INFO] cloning repository https://github.com/istvan-fodor/arrow-iterator-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/istvan-fodor/arrow-iterator-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fistvan-fodor%2Farrow-iterator-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fistvan-fodor%2Farrow-iterator-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 440c545cc32f57f7dcba17d8f8abb5bf9966fc15
[INFO] checking istvan-fodor/arrow-iterator-test against master#46424fb5054f211ec836c5c03159f92e46bb35ac for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fistvan-fodor%2Farrow-iterator-test" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] error: Unable to create '/workspace/builds/worker-4-tc1/source/.git/refs/remotes/origin/HEAD.lock': No such file or directory
[INFO] [stderr] fatal: unable to update refs/remotes/origin/HEAD


failed to checkout https://github.com/istvan-fodor/arrow-iterator-test

Caused by:
    command failed: exit status: 128