[INFO] cloning repository https://github.com/tunamaguro/kube-rs-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tunamaguro/kube-rs-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftunamaguro%2Fkube-rs-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftunamaguro%2Fkube-rs-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3472b8fd95f32a8eb36e64576883c8a611d57c7c
[INFO] checking tunamaguro/kube-rs-learn against master#8321f00bf4a5f25cad5ec8861c5469afe6e0ce8b for pr-133925
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftunamaguro%2Fkube-rs-learn" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] fatal: update_ref failed for ref 'HEAD': cannot update ref 'refs/heads/main': couldn't write '/workspace/builds/worker-5-tc1/source/.git/refs/heads/main.lock'


failed to checkout https://github.com/tunamaguro/kube-rs-learn

Caused by:
    command failed: exit status: 128