[INFO] cloning repository https://github.com/hectorip/shuttlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hectorip/shuttlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhectorip%2Fshuttlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhectorip%2Fshuttlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4622c82dd963e9511b9f9cd536a6d2b98abae125
[INFO] checking hectorip/shuttlings against try#f17e3a389e192f83fe27a581774a9d1dbb8e565b for pr-137394
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhectorip%2Fshuttlings" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hectorip/shuttlings on toolchain f17e3a389e192f83fe27a581774a9d1dbb8e565b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hectorip/shuttlings
[INFO] finished tweaking git repo https://github.com/hectorip/shuttlings
[INFO] tweaked toml for git repo https://github.com/hectorip/shuttlings written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hectorip/shuttlings 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" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4f296363ed9c76f0664206c65068e8aa559a6220a9e226c94a444c1cc128987
[INFO] running `Command { std: "docker" "start" "-a" "f4f296363ed9c76f0664206c65068e8aa559a6220a9e226c94a444c1cc128987", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4f296363ed9c76f0664206c65068e8aa559a6220a9e226c94a444c1cc128987", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4f296363ed9c76f0664206c65068e8aa559a6220a9e226c94a444c1cc128987", kill_on_drop: false }`
[INFO] [stdout] f4f296363ed9c76f0664206c65068e8aa559a6220a9e226c94a444c1cc128987
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+f17e3a389e192f83fe27a581774a9d1dbb8e565b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a03f42e6d4faee49f23a128b99050e45f0d14508dcce7b28b42bf6c4bc521b23
[INFO] running `Command { std: "docker" "start" "-a" "a03f42e6d4faee49f23a128b99050e45f0d14508dcce7b28b42bf6c4bc521b23", kill_on_drop: false }`
[INFO] [stderr]     Checking shuttlings v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     left + right;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let _ = left + right;
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused arithmetic operation that must be used
[INFO] [stdout]  --> src/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     left + right;
[INFO] [stdout]   |     ^^^^^^^^^^^^ the arithmetic operation produces a value
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let _ = left + right;
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `shuttlings` (lib); 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/f17e3a389e192f83fe27a581774a9d1dbb8e565b/bin/rustc --crate-name shuttlings --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=31db5a84fc8e9930 -C extra-filename=-2c0e1c7021697231 --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 `shuttlings` (lib 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/f17e3a389e192f83fe27a581774a9d1dbb8e565b/bin/rustc --crate-name shuttlings --edition=2021 src/lib.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=c8102f3ba5aae566 -C extra-filename=-a2920bd37666a977 --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" "a03f42e6d4faee49f23a128b99050e45f0d14508dcce7b28b42bf6c4bc521b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a03f42e6d4faee49f23a128b99050e45f0d14508dcce7b28b42bf6c4bc521b23", kill_on_drop: false }`
[INFO] [stdout] a03f42e6d4faee49f23a128b99050e45f0d14508dcce7b28b42bf6c4bc521b23