[INFO] cloning repository https://github.com/wuyuan1992/rust_pactice_chap_8
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wuyuan1992/rust_pactice_chap_8" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwuyuan1992%2Frust_pactice_chap_8", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwuyuan1992%2Frust_pactice_chap_8'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2a209c19aa387111db6166d5cb0ab64e10b5f0d
[INFO] testing wuyuan1992/rust_pactice_chap_8 against master#1ddedbaa5919b7b3e70d984660e21e844c615c97 for pr-128400
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwuyuan1992%2Frust_pactice_chap_8" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] /workspace/builds/worker-6-tc1/source/.git/refs: No space left on device
[ERROR] this task or one of its parent failed!
[ERROR] failed to checkout https://github.com/wuyuan1992/rust_pactice_chap_8
[ERROR] caused by: command failed: exit status: 1
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.