[INFO] cloning repository https://github.com/ieiriyuki/my-rust-reversi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ieiriyuki/my-rust-reversi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fieiriyuki%2Fmy-rust-reversi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fieiriyuki%2Fmy-rust-reversi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8cb601080df78b26dc586f1645d4830f5cb663b3
[INFO] testing ieiriyuki/my-rust-reversi against master#562dee4820c458d823175268e41601d4c060588a for pr-154210
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fieiriyuki%2Fmy-rust-reversi" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] fatal: update_ref failed for ref 'HEAD': cannot update the ref 'refs/heads/master': unable to append to '/workspace/builds/worker-2-tc1/source/.git/logs/refs/heads/master': No space left on device


overridden task result to prepare-fail:unknown

Caused by:
    0: uncategorized prepare error
    1: failed to checkout https://github.com/ieiriyuki/my-rust-reversi
    2: command failed: exit status: 128