[INFO] cloning repository https://github.com/officialpiyush/armstrong-number-checker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/officialpiyush/armstrong-number-checker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fofficialpiyush%2Farmstrong-number-checker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fofficialpiyush%2Farmstrong-number-checker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] efd413745f705f74e9047c915afd11f97211b239
[INFO] checking officialpiyush/armstrong-number-checker against master#b2728d5426bab1d8c39709768c7e22b7f66dde5d for pr-135852
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fofficialpiyush%2Farmstrong-number-checker" "/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/officialpiyush/armstrong-number-checker

Caused by:
    command failed: exit status: 128