[INFO] cloning repository https://github.com/xgqdut2016/exam-grading
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xgqdut2016/exam-grading" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxgqdut2016%2Fexam-grading", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxgqdut2016%2Fexam-grading'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 476544fedadd9868e798bce029da6e762f44a50d
[INFO] checking xgqdut2016/exam-grading against master#0c478fdfe138a8b09744798c85fe2be657768b00 for pr-139419
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxgqdut2016%2Fexam-grading" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] [stderr] error: unable to write file solutions/quizzes/quiz1.rs
[INFO] [stderr] error: unable to write file solutions/quizzes/quiz2.rs
[INFO] [stderr] error: unable to write file solutions/quizzes/quiz3.rs
[INFO] [stderr] fatal: cannot create directory at 'src': No space left on device
[INFO] [stderr] warning: Clone succeeded, but checkout failed.
[INFO] [stderr] You can inspect what was checked out with 'git status'
[INFO] [stderr] and retry with 'git restore --source=HEAD :/'
[INFO] [stderr] 


failed to checkout https://github.com/xgqdut2016/exam-grading

Caused by:
    command failed: exit status: 128