[INFO] cloning repository https://github.com/swarnimarun/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/swarnimarun/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswarnimarun%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswarnimarun%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ae768bfbf796b5633f9768fbec03547cbfff16ee
[INFO] checking swarnimarun/learning-rust against master#4ecd70ddd1039a3954056c1071e40278048476fa for pr-137633
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fswarnimarun%2Flearning-rust" "/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] fatal: update_ref failed for ref 'HEAD': cannot update the ref 'refs/heads/presentation': unable to create directory for '/workspace/builds/worker-4-tc1/source/.git/logs/refs/heads/presentation': No such file or directory


failed to checkout https://github.com/swarnimarun/learning-rust

Caused by:
    command failed: exit status: 128