[INFO] cloning repository https://github.com/alcow5/Rust-Workout-Sheet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alcow5/Rust-Workout-Sheet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falcow5%2FRust-Workout-Sheet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falcow5%2FRust-Workout-Sheet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fd7540b92443475520e6cfce7de29c9bed99f952
[INFO] checking alcow5/Rust-Workout-Sheet against master#c720f49c46ec3e70bbc2bbb3e0dd1fe7fc0a47f2 for pr-142712
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falcow5%2FRust-Workout-Sheet" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] error: unable to write symref for refs/remotes/origin/HEAD: No space left on device
[INFO] [stderr] fatal: unable to update refs/remotes/origin/HEAD


failed to checkout https://github.com/alcow5/Rust-Workout-Sheet

Caused by:
    command failed: exit status: 128