[INFO] cloning repository https://github.com/skytos/rust_euler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/skytos/rust_euler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskytos%2Frust_euler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskytos%2Frust_euler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8279a21a19e59e585c09a612816aab04e1935316
[INFO] checking skytos/rust_euler against master#9f48dedc9763334a587c66558974635807a113ed for pr-137394
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fskytos%2Frust_euler" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-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-3-tc1/source/.git/logs/HEAD': No space left on device


failed to checkout https://github.com/skytos/rust_euler

Caused by:
    command failed: exit status: 128