[INFO] cloning repository https://github.com/qbosen/rust-learn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qbosen/rust-learn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqbosen%2Frust-learn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqbosen%2Frust-learn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cb5ccfd0fbb076c1369786e375c22c698e5cc348
[INFO] checking qbosen/rust-learn against master#f8f6997469237299c1d60814c7b9828602a1f8e4 for pr-143808
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqbosen%2Frust-learn" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] error: unable to write symref for HEAD: No space left on device


failed to checkout https://github.com/qbosen/rust-learn

Caused by:
    command failed: exit status: 1