Dec 19 09:10:06.124 INFO checking sebasmagri/rust-concurrency-patterns against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 09:10:06.125 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/sebasmagri/rust-concurrency-patterns:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:10:06.444 INFO [stdout] 1c14b05829f463494cd6985c9e6b5768b1991b58a721683a7ea876b6cbfffea9
Dec 19 09:10:06.450 INFO running `"docker" "start" "-a" "1c14b05829f463494cd6985c9e6b5768b1991b58a721683a7ea876b6cbfffea9"`
Dec 19 09:10:07.656 INFO [stderr]     Checking concurrency-patterns v0.1.0 (/opt/crater/workdir)
Dec 19 09:10:08.292 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 09:10:08.292 INFO [stderr]   --> examples/04-fan-in.rs:32:5
Dec 19 09:10:08.292 INFO [stderr]    |
Dec 19 09:10:08.292 INFO [stderr] 32 |     consumer(Arc::new(Mutex::new(rx))).join();
Dec 19 09:10:08.292 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 09:10:08.292 INFO [stderr]    |
Dec 19 09:10:08.292 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 09:10:08.292 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 09:10:08.292 INFO [stderr] 
Dec 19 09:10:08.306 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
Dec 19 09:10:09.638 INFO running `"docker" "inspect" "1c14b05829f463494cd6985c9e6b5768b1991b58a721683a7ea876b6cbfffea9"`
Dec 19 09:10:09.950 INFO running `"docker" "rm" "-f" "1c14b05829f463494cd6985c9e6b5768b1991b58a721683a7ea876b6cbfffea9"`
Dec 19 09:10:10.384 INFO [stdout] 1c14b05829f463494cd6985c9e6b5768b1991b58a721683a7ea876b6cbfffea9