[INFO] cloning repository https://github.com/yyYank/rust-sandbox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yyYank/rust-sandbox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FyyYank%2Frust-sandbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FyyYank%2Frust-sandbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b0c88d83afdfb256e696785aaec197cd812ad74c
[INFO] testing yyYank/rust-sandbox against master#61223975d46f794466efa832bc7562b9707ecc46+rustflags=-Copt-level=3 for pr-121282
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FyyYank%2Frust-sandbox" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] /workspace/builds/worker-4-tc1/source/.git/refs/heads: No space left on device
[ERROR] this task or one of its parent failed!
[ERROR] failed to checkout https://github.com/yyYank/rust-sandbox
[ERROR] caused by: command failed: exit status: 1
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.