[INFO] cloning repository https://github.com/yeyujingren/RUST_DEMO
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yeyujingren/RUST_DEMO" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeyujingren%2FRUST_DEMO", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeyujingren%2FRUST_DEMO'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeyujingren%2FRUST_DEMO: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/yeyujingren/RUST_DEMO
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yeyujingren/RUST_DEMO" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeyujingren%2FRUST_DEMO", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeyujingren%2FRUST_DEMO'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f9dfbff759be6ad42f4c21ebbe1298f2a3bf575
[INFO] checking yeyujingren/RUST_DEMO against master#94b72d6bebbddb5d17860914c4544f37365e988c for pr-122789
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeyujingren%2FRUST_DEMO" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] error: Unable to create '/workspace/builds/worker-1-tc1/source/.git/refs/remotes/origin/HEAD.lock': No such file or directory
[INFO] [stderr] fatal: unable to update refs/remotes/origin/HEAD
[INFO] [stderr] fatal: the remote end hung up unexpectedly
[ERROR] this task or one of its parent failed!
[ERROR] failed to checkout https://github.com/yeyujingren/RUST_DEMO
[ERROR] caused by: command failed: exit status: 128
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.