[INFO] cloning repository https://github.com/otdavies/rust_shared_utilties
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/otdavies/rust_shared_utilties" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotdavies%2Frust_shared_utilties", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotdavies%2Frust_shared_utilties'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ebadd6a142c4566e849462e5002d4422b7c08b8e
[INFO] checking otdavies/rust_shared_utilties against master#f7b43542838f0a4a6cfdb17fbeadf45002042a77 for pr-138499
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotdavies%2Frust_shared_utilties" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/otdavies/rust_shared_utilties on toolchain f7b43542838f0a4a6cfdb17fbeadf45002042a77
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f7b43542838f0a4a6cfdb17fbeadf45002042a77" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/otdavies/rust_shared_utilties
[INFO] finished tweaking git repo https://github.com/otdavies/rust_shared_utilties
[INFO] tweaked toml for git repo https://github.com/otdavies/rust_shared_utilties written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/otdavies/rust_shared_utilties 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" "+f7b43542838f0a4a6cfdb17fbeadf45002042a77" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+f7b43542838f0a4a6cfdb17fbeadf45002042a77" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac9c5626c122353c9bdb8316f0da0627b17b1867833cb8ad45450646bf97f1f7
[INFO] running `Command { std: "docker" "start" "-a" "ac9c5626c122353c9bdb8316f0da0627b17b1867833cb8ad45450646bf97f1f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac9c5626c122353c9bdb8316f0da0627b17b1867833cb8ad45450646bf97f1f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac9c5626c122353c9bdb8316f0da0627b17b1867833cb8ad45450646bf97f1f7", kill_on_drop: false }`
[INFO] [stdout] ac9c5626c122353c9bdb8316f0da0627b17b1867833cb8ad45450646bf97f1f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+f7b43542838f0a4a6cfdb17fbeadf45002042a77" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8432bd29d91d199b21a567454d545cb10b3612a06cad325e2ffbae013f141cf8
[INFO] running `Command { std: "docker" "start" "-a" "8432bd29d91d199b21a567454d545cb10b3612a06cad325e2ffbae013f141cf8", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_shared_utilities v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `unsubscribe` is never used
[INFO] [stdout]   --> src/patterns/observer.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait IListen<'a, T> {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 20 |     fn subscribe(&mut self, observer: impl IObserve<T> + 'a);
[INFO] [stdout] 21 |     fn unsubscribe(&mut self, observer: impl IObserve<T> + 'a);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `unsubscribe` is never used
[INFO] [stdout]   --> src/patterns/observer.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait IListen<'a, T> {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 20 |     fn subscribe(&mut self, observer: impl IObserve<T> + 'a);
[INFO] [stdout] 21 |     fn unsubscribe(&mut self, observer: impl IObserve<T> + 'a);
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_shared_utilities` (bin "rust_shared_utilities"); 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/f7b43542838f0a4a6cfdb17fbeadf45002042a77/bin/rustc --crate-name rust_shared_utilities --edition=2021 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=12ed32e43b6b0a03 -C extra-filename=-07d26d25fbe978a3 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust_shared_utilities` (bin "rust_shared_utilities" test); 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/f7b43542838f0a4a6cfdb17fbeadf45002042a77/bin/rustc --crate-name rust_shared_utilities --edition=2021 src/main.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=d9eac3a9efa66884 -C extra-filename=-34681e7e9e969ff0 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints=forbid` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8432bd29d91d199b21a567454d545cb10b3612a06cad325e2ffbae013f141cf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8432bd29d91d199b21a567454d545cb10b3612a06cad325e2ffbae013f141cf8", kill_on_drop: false }`
[INFO] [stdout] 8432bd29d91d199b21a567454d545cb10b3612a06cad325e2ffbae013f141cf8