[INFO] cloning repository https://github.com/rahman-habib/invoice-contract-stellar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rahman-habib/invoice-contract-stellar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frahman-habib%2Finvoice-contract-stellar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frahman-habib%2Finvoice-contract-stellar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3f15f4e01060a240a56f820fb0f8ede380f4e0d8
[INFO] checking rahman-habib/invoice-contract-stellar against master#040e2f8b9ff2d76fbe2146d6003e297ed4532088 for pr-143619
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frahman-habib%2Finvoice-contract-stellar" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-0-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


failed to checkout https://github.com/rahman-habib/invoice-contract-stellar

Caused by:
    command failed: exit status: 128