Dec 18 09:24:21.802 INFO checking waterrower-0.1.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 09:24:21.802 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/waterrower/0.1.0:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 09:24:22.155 INFO [stdout] 4f2a8eae9c31033c151b42eb54359e2b42c519daf7eb4ddaffb984ac734913d1
Dec 18 09:24:22.158 INFO running `"docker" "start" "-a" "4f2a8eae9c31033c151b42eb54359e2b42c519daf7eb4ddaffb984ac734913d1"`
Dec 18 09:24:22.821 INFO [stderr]     Checking ioctl-rs v0.1.6
Dec 18 09:24:22.822 INFO [stderr]     Checking termios v0.2.2
Dec 18 09:24:22.822 INFO [stderr]     Checking nix v0.7.0
Dec 18 09:24:23.248 INFO [stderr]     Checking serial v0.3.4
Dec 18 09:24:25.808 INFO [stderr]     Checking waterrower v0.1.0 (/opt/crater/workdir)
Dec 18 09:24:26.104 INFO [stderr] warning: unused import: `std::str`
Dec 18 09:24:26.104 INFO [stderr]   --> src/main.rs:11:5
Dec 18 09:24:26.104 INFO [stderr]    |
Dec 18 09:24:26.104 INFO [stderr] 11 | use std::str;
Dec 18 09:24:26.104 INFO [stderr]    |     ^^^^^^^^
Dec 18 09:24:26.104 INFO [stderr]    |
Dec 18 09:24:26.104 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 09:24:26.104 INFO [stderr] 
Dec 18 09:24:26.148 INFO [stderr] warning: unused variable: `serialtx`
Dec 18 09:24:26.148 INFO [stderr]   --> src/main.rs:33:10
Dec 18 09:24:26.148 INFO [stderr]    |
Dec 18 09:24:26.148 INFO [stderr] 33 |     let (serialtx, serialrx) = mpsc::channel();
Dec 18 09:24:26.148 INFO [stderr]    |          ^^^^^^^^ help: consider using `_serialtx` instead
Dec 18 09:24:26.148 INFO [stderr]    |
Dec 18 09:24:26.148 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 09:24:26.148 INFO [stderr] 
Dec 18 09:24:26.176 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:24:26.176 INFO [stderr]   --> src/main.rs:27:14
Dec 18 09:24:26.176 INFO [stderr]    |
Dec 18 09:24:26.176 INFO [stderr] 27 |     unsafe { signal::sigaction(signal::SIGINT, &sig_action); }
Dec 18 09:24:26.177 INFO [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:24:26.177 INFO [stderr]    |
Dec 18 09:24:26.177 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 09:24:26.177 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:24:26.177 INFO [stderr] 
Dec 18 09:24:26.180 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:24:26.180 INFO [stderr]   --> src/main.rs:28:14
Dec 18 09:24:26.180 INFO [stderr]    |
Dec 18 09:24:26.180 INFO [stderr] 28 |     unsafe { signal::sigaction(signal::SIGTERM, &sig_action); }
Dec 18 09:24:26.180 INFO [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:24:26.180 INFO [stderr]    |
Dec 18 09:24:26.180 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:24:26.180 INFO [stderr] 
Dec 18 09:24:26.200 INFO [stderr] warning: unused import: `std::str`
Dec 18 09:24:26.201 INFO [stderr]   --> src/main.rs:11:5
Dec 18 09:24:26.201 INFO [stderr]    |
Dec 18 09:24:26.201 INFO [stderr] 11 | use std::str;
Dec 18 09:24:26.201 INFO [stderr]    |     ^^^^^^^^
Dec 18 09:24:26.201 INFO [stderr]    |
Dec 18 09:24:26.201 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 09:24:26.201 INFO [stderr] 
Dec 18 09:24:26.261 INFO [stderr] warning: unused variable: `serialtx`
Dec 18 09:24:26.261 INFO [stderr]   --> src/main.rs:33:10
Dec 18 09:24:26.261 INFO [stderr]    |
Dec 18 09:24:26.261 INFO [stderr] 33 |     let (serialtx, serialrx) = mpsc::channel();
Dec 18 09:24:26.261 INFO [stderr]    |          ^^^^^^^^ help: consider using `_serialtx` instead
Dec 18 09:24:26.261 INFO [stderr]    |
Dec 18 09:24:26.261 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 09:24:26.261 INFO [stderr] 
Dec 18 09:24:26.288 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:24:26.288 INFO [stderr]   --> src/main.rs:27:14
Dec 18 09:24:26.288 INFO [stderr]    |
Dec 18 09:24:26.288 INFO [stderr] 27 |     unsafe { signal::sigaction(signal::SIGINT, &sig_action); }
Dec 18 09:24:26.288 INFO [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:24:26.288 INFO [stderr]    |
Dec 18 09:24:26.288 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 18 09:24:26.288 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:24:26.288 INFO [stderr] 
Dec 18 09:24:26.288 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 18 09:24:26.288 INFO [stderr]   --> src/main.rs:28:14
Dec 18 09:24:26.288 INFO [stderr]    |
Dec 18 09:24:26.288 INFO [stderr] 28 |     unsafe { signal::sigaction(signal::SIGTERM, &sig_action); }
Dec 18 09:24:26.288 INFO [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 09:24:26.288 INFO [stderr]    |
Dec 18 09:24:26.288 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 18 09:24:26.288 INFO [stderr] 
Dec 18 09:24:26.324 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.53s
Dec 18 09:24:26.694 INFO running `"docker" "inspect" "4f2a8eae9c31033c151b42eb54359e2b42c519daf7eb4ddaffb984ac734913d1"`
Dec 18 09:24:26.797 INFO running `"docker" "rm" "-f" "4f2a8eae9c31033c151b42eb54359e2b42c519daf7eb4ddaffb984ac734913d1"`
Dec 18 09:24:26.936 INFO [stdout] 4f2a8eae9c31033c151b42eb54359e2b42c519daf7eb4ddaffb984ac734913d1