[INFO] cloning repository https://github.com/os2edu/rustlings-Super-ZZGuo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/os2edu/rustlings-Super-ZZGuo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-Super-ZZGuo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-Super-ZZGuo'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-Super-ZZGuo/branches/: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/os2edu/rustlings-Super-ZZGuo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/os2edu/rustlings-Super-ZZGuo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-Super-ZZGuo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-Super-ZZGuo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bfe288075e4f88929ae109f686ad2066fa9452b7
[INFO] building os2edu/rustlings-Super-ZZGuo against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fos2edu%2Frustlings-Super-ZZGuo" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] error: Unable to create '/workspace/builds/worker-6-tc1/source/.git/refs/remotes/origin/HEAD.lock': No such file or directory
[INFO] [stderr] fatal: unable to update refs/remotes/origin/HEAD


failed to checkout https://github.com/os2edu/rustlings-Super-ZZGuo

Caused by:
    command failed: exit status: 128