[INFO] cloning repository https://github.com/rust-master/bottlenecks-undirected-graph-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-master/bottlenecks-undirected-graph-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-master%2Fbottlenecks-undirected-graph-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-master%2Fbottlenecks-undirected-graph-rust'...
[INFO] [stderr] error: unable to write symref for HEAD: No space left on device
[INFO] [stderr] fatal: unable to update HEAD
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/rust-master/bottlenecks-undirected-graph-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-master/bottlenecks-undirected-graph-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-master%2Fbottlenecks-undirected-graph-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-master%2Fbottlenecks-undirected-graph-rust'...
[INFO] [stderr] error: failed to write new configuration file /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-master%2Fbottlenecks-undirected-graph-rust/config.lock
[INFO] [stderr] fatal: could not set 'core.filemode' to 'true'
[WARN] Retrying crate fetch in 3 seconds (attempt 2)
[INFO] cloning repository https://github.com/rust-master/bottlenecks-undirected-graph-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rust-master/bottlenecks-undirected-graph-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-master%2Fbottlenecks-undirected-graph-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-master%2Fbottlenecks-undirected-graph-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c31b74a8289720994b0f2da34cecd9993b232ced
[INFO] checking rust-master/bottlenecks-undirected-graph-rust against master#46424fb5054f211ec836c5c03159f92e46bb35ac for pr-139042
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frust-master%2Fbottlenecks-undirected-graph-rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] /workspace/builds/worker-2-tc1/source/.git/branches/: No space left on device


failed to checkout https://github.com/rust-master/bottlenecks-undirected-graph-rust

Caused by:
    command failed: exit status: 1