[INFO] cloning repository https://github.com/ttys3/rust-protobuf-serde-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ttys3/rust-protobuf-serde-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fttys3%2Frust-protobuf-serde-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fttys3%2Frust-protobuf-serde-demo'...
[INFO] [stderr] fatal: error closing file /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fttys3%2Frust-protobuf-serde-demo/packed-refs.new: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/ttys3/rust-protobuf-serde-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ttys3/rust-protobuf-serde-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fttys3%2Frust-protobuf-serde-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fttys3%2Frust-protobuf-serde-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a15f5cdb2a4205d217f9f44425bef3c246a5c3f
[INFO] checking ttys3/rust-protobuf-serde-demo against master#9748d87dc70a9a6725c5dbd76ce29d04752b4f90 for pr-144156
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fttys3%2Frust-protobuf-serde-demo" "/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] error: unable to write symref for refs/remotes/origin/HEAD: No space left on device
[INFO] [stderr] fatal: unable to update refs/remotes/origin/HEAD


failed to checkout https://github.com/ttys3/rust-protobuf-serde-demo

Caused by:
    command failed: exit status: 128