[INFO] cloning repository https://github.com/f4bb0/Rust-serial-monitor
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/f4bb0/Rust-serial-monitor" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff4bb0%2FRust-serial-monitor", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff4bb0%2FRust-serial-monitor'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ca482fd4e9631a3222e40c8124f7d5b1fec13fa
[INFO] checking f4bb0/Rust-serial-monitor against master#d93f678fa55842cccd2f091deccd93e9494b3764 for pr-138844
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ff4bb0%2FRust-serial-monitor" "/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] fatal: update_ref failed for ref 'HEAD': cannot update the ref 'HEAD': unable to append to '/workspace/builds/worker-6-tc1/source/.git/logs/HEAD': No space left on device


failed to checkout https://github.com/f4bb0/Rust-serial-monitor

Caused by:
    command failed: exit status: 128