[INFO] cloning repository https://github.com/zcash-hackworks/pay-to-sudoku
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zcash-hackworks/pay-to-sudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcash-hackworks%2Fpay-to-sudoku", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcash-hackworks%2Fpay-to-sudoku'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e80e165ab50495606c59edded993e193dc506dc0
[INFO] checking zcash-hackworks/pay-to-sudoku against master#bb89df6903539e7014b8db29bccd6a9ee9553122 for pr-121072
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzcash-hackworks%2Fpay-to-sudoku" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zcash-hackworks/pay-to-sudoku on toolchain bb89df6903539e7014b8db29bccd6a9ee9553122
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bb89df6903539e7014b8db29bccd6a9ee9553122" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zcash-hackworks/pay-to-sudoku
[INFO] finished tweaking git repo https://github.com/zcash-hackworks/pay-to-sudoku
[INFO] tweaked toml for git repo https://github.com/zcash-hackworks/pay-to-sudoku written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/zcash-hackworks/pay-to-sudoku already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bb89df6903539e7014b8db29bccd6a9ee9553122" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicase v1.2.1
[INFO] [stderr]   Downloaded encoding v0.2.32
[INFO] [stderr]   Downloaded thread-scoped v1.0.1
[INFO] [stderr]   Downloaded mime v0.1.3
[INFO] [stderr]   Downloaded openssl v0.6.7
[INFO] [stderr]   Downloaded ansi_term v0.7.1
[INFO] [stderr]   Downloaded openssl-sys v0.6.7
[INFO] [stderr]   Downloaded serde v0.6.6
[INFO] [stderr]   Downloaded rustc_version v0.1.6
[INFO] [stderr]   Downloaded bincode v0.4.0
[INFO] [stderr]   Downloaded hyper v0.6.16
[INFO] [stderr]   Downloaded num v0.1.28
[INFO] [stderr]   Downloaded whiteread v0.2.0
[INFO] [stderr]   Downloaded jsonrpc v0.7.1
[INFO] [stderr]   Downloaded hex v0.1.0
[INFO] [stderr]   Downloaded clap v1.5.4
[INFO] [stderr]   Downloaded strason v0.3.3
[ERROR] this task or one of its parent failed!
[ERROR] No space left on device (os error 28)
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.