[INFO] crate stoppable_thread 0.2.1 is already in cache
[INFO] checking stoppable_thread-0.2.1 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] extracting crate stoppable_thread 0.2.1 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate stoppable_thread 0.2.1 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate stoppable_thread 0.2.1
[INFO] finished tweaking crates.io crate stoppable_thread 0.2.1
[INFO] tweaked toml for crates.io crate stoppable_thread 0.2.1 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cfcdf2ae56d4a07c8b02ba218c7e4e8b9ad40031a311f71dbb737f656e68de1a
[INFO] running `"docker" "start" "-a" "cfcdf2ae56d4a07c8b02ba218c7e4e8b9ad40031a311f71dbb737f656e68de1a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking stoppable_thread v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `stopping`
[INFO] [stderr]    --> src/lib.rs:225:13
[INFO] [stderr]     |
[INFO] [stderr] 225 |         let stopping = Stopping::new(spawn(move |stopped|
[INFO] [stderr]     |             ^^^^^^^^ help: consider prefixing with an underscore: `_stopping`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `joining`
[INFO] [stderr]    --> src/lib.rs:229:13
[INFO] [stderr]     |
[INFO] [stderr] 229 |         let joining = Joining::new(spawn(move |stopped|
[INFO] [stderr]     |             ^^^^^^^ help: consider prefixing with an underscore: `_joining`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "cfcdf2ae56d4a07c8b02ba218c7e4e8b9ad40031a311f71dbb737f656e68de1a"`
[INFO] running `"docker" "rm" "-f" "cfcdf2ae56d4a07c8b02ba218c7e4e8b9ad40031a311f71dbb737f656e68de1a"`
[INFO] [stdout] cfcdf2ae56d4a07c8b02ba218c7e4e8b9ad40031a311f71dbb737f656e68de1a