[INFO] cloning repository https://github.com/wsdt/Rust_TimeDilation_SpecialRelativity
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wsdt/Rust_TimeDilation_SpecialRelativity" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwsdt%2FRust_TimeDilation_SpecialRelativity", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwsdt%2FRust_TimeDilation_SpecialRelativity'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fb57d911e29beef7467949cc981b66067782dc8f
[INFO] checking wsdt/Rust_TimeDilation_SpecialRelativity against master#19f42cb9bb65555e7d95dab7d17573ae6c5d634c for pr-139087
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwsdt%2FRust_TimeDilation_SpecialRelativity" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] error: failed to write new configuration file /workspace/builds/worker-2-tc1/source/.git/config.lock
[INFO] [stderr] fatal: could not set 'core.repositoryformatversion' to '0'


failed to checkout https://github.com/wsdt/Rust_TimeDilation_SpecialRelativity

Caused by:
    command failed: exit status: 128