[INFO] cloning repository https://github.com/kremrik/rational-numbers-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kremrik/rational-numbers-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkremrik%2Frational-numbers-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkremrik%2Frational-numbers-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4edd61c1fe21541c6dcecd02c2c4c3fb5e20704f
[INFO] checking kremrik/rational-numbers-rust against master#9c67cecd12d79f1bbc00a74f70e7ef9fff086a5a for pr-138458
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkremrik%2Frational-numbers-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] error: unable to write symref for HEAD: No space left on device


failed to checkout https://github.com/kremrik/rational-numbers-rust

Caused by:
    command failed: exit status: 1