Dec 12 05:02:45.336 INFO checking waterrower-0.1.0 against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 12 05:02:45.336 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 12 05:02:45.781 INFO [stdout] 655cf2b26e8ef9f7644016909ac500057205f465c0ce6382114fecd1fdbef835
Dec 12 05:02:45.788 INFO running `"docker" "start" "-a" "655cf2b26e8ef9f7644016909ac500057205f465c0ce6382114fecd1fdbef835"`
Dec 12 05:02:47.059 INFO [stderr] usermod: no changes
Dec 12 05:02:47.165 INFO [stderr]     Checking ioctl-rs v0.1.6
Dec 12 05:02:47.165 INFO [stderr]     Checking termios v0.2.2
Dec 12 05:02:47.984 INFO [stderr]     Checking serial v0.3.4
Dec 12 05:02:48.788 INFO [stderr]     Checking waterrower v0.1.0 (/source)
Dec 12 05:02:50.316 INFO [stderr] warning: unused import: `std::str`
Dec 12 05:02:50.316 INFO [stderr]   --> src/main.rs:11:5
Dec 12 05:02:50.316 INFO [stderr]    |
Dec 12 05:02:50.316 INFO [stderr] 11 | use std::str;
Dec 12 05:02:50.316 INFO [stderr]    |     ^^^^^^^^
Dec 12 05:02:50.316 INFO [stderr]    |
Dec 12 05:02:50.316 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 05:02:50.316 INFO [stderr] 
Dec 12 05:02:50.408 INFO [stderr] warning: unused variable: `serialtx`
Dec 12 05:02:50.408 INFO [stderr]   --> src/main.rs:33:10
Dec 12 05:02:50.408 INFO [stderr]    |
Dec 12 05:02:50.408 INFO [stderr] 33 |     let (serialtx, serialrx) = mpsc::channel();
Dec 12 05:02:50.408 INFO [stderr]    |          ^^^^^^^^ help: consider using `_serialtx` instead
Dec 12 05:02:50.408 INFO [stderr]    |
Dec 12 05:02:50.408 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 05:02:50.408 INFO [stderr] 
Dec 12 05:02:50.480 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 05:02:50.480 INFO [stderr]   --> src/main.rs:27:14
Dec 12 05:02:50.480 INFO [stderr]    |
Dec 12 05:02:50.480 INFO [stderr] 27 |     unsafe { signal::sigaction(signal::SIGINT, &sig_action); }
Dec 12 05:02:50.480 INFO [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 05:02:50.480 INFO [stderr]    |
Dec 12 05:02:50.480 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 05:02:50.480 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 05:02:50.480 INFO [stderr] 
Dec 12 05:02:50.480 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 05:02:50.480 INFO [stderr]   --> src/main.rs:28:14
Dec 12 05:02:50.480 INFO [stderr]    |
Dec 12 05:02:50.480 INFO [stderr] 28 |     unsafe { signal::sigaction(signal::SIGTERM, &sig_action); }
Dec 12 05:02:50.480 INFO [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 05:02:50.480 INFO [stderr]    |
Dec 12 05:02:50.480 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 05:02:50.480 INFO [stderr] 
Dec 12 05:02:50.624 INFO [stderr] warning: unused import: `std::str`
Dec 12 05:02:50.624 INFO [stderr]   --> src/main.rs:11:5
Dec 12 05:02:50.624 INFO [stderr]    |
Dec 12 05:02:50.624 INFO [stderr] 11 | use std::str;
Dec 12 05:02:50.624 INFO [stderr]    |     ^^^^^^^^
Dec 12 05:02:50.624 INFO [stderr]    |
Dec 12 05:02:50.624 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 05:02:50.624 INFO [stderr] 
Dec 12 05:02:50.700 INFO [stderr] warning: unused variable: `serialtx`
Dec 12 05:02:50.700 INFO [stderr]   --> src/main.rs:33:10
Dec 12 05:02:50.700 INFO [stderr]    |
Dec 12 05:02:50.700 INFO [stderr] 33 |     let (serialtx, serialrx) = mpsc::channel();
Dec 12 05:02:50.700 INFO [stderr]    |          ^^^^^^^^ help: consider using `_serialtx` instead
Dec 12 05:02:50.700 INFO [stderr]    |
Dec 12 05:02:50.700 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 05:02:50.700 INFO [stderr] 
Dec 12 05:02:50.764 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 05:02:50.764 INFO [stderr]   --> src/main.rs:27:14
Dec 12 05:02:50.764 INFO [stderr]    |
Dec 12 05:02:50.764 INFO [stderr] 27 |     unsafe { signal::sigaction(signal::SIGINT, &sig_action); }
Dec 12 05:02:50.764 INFO [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 05:02:50.764 INFO [stderr]    |
Dec 12 05:02:50.764 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 12 05:02:50.764 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 05:02:50.764 INFO [stderr] 
Dec 12 05:02:50.764 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 12 05:02:50.764 INFO [stderr]   --> src/main.rs:28:14
Dec 12 05:02:50.764 INFO [stderr]    |
Dec 12 05:02:50.764 INFO [stderr] 28 |     unsafe { signal::sigaction(signal::SIGTERM, &sig_action); }
Dec 12 05:02:50.764 INFO [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 05:02:50.764 INFO [stderr]    |
Dec 12 05:02:50.764 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 12 05:02:50.764 INFO [stderr] 
Dec 12 05:02:50.805 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.72s
Dec 12 05:02:50.812 INFO [stderr] su: No module specific data is present
Dec 12 05:02:51.603 INFO running `"docker" "inspect" "655cf2b26e8ef9f7644016909ac500057205f465c0ce6382114fecd1fdbef835"`
Dec 12 05:02:51.886 INFO running `"docker" "rm" "-f" "655cf2b26e8ef9f7644016909ac500057205f465c0ce6382114fecd1fdbef835"`
Dec 12 05:02:52.168 INFO [stdout] 655cf2b26e8ef9f7644016909ac500057205f465c0ce6382114fecd1fdbef835