Dec 04 14:05:42.056 INFO checking mikeyhew/brainfuck against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 14:05:42.056 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 14:05:42.643 INFO [stdout] 66b45c6298b662b99ffcf79d56f67cd29df58b29440a77d8afc6a07e6869f11b
Dec 04 14:05:42.650 INFO running `"docker" "start" "-a" "66b45c6298b662b99ffcf79d56f67cd29df58b29440a77d8afc6a07e6869f11b"`
Dec 04 14:05:44.023 INFO [stderr] usermod: no changes
Dec 04 14:05:44.087 INFO [stderr]     Checking brainfuck v0.1.0 (/source)
Dec 04 14:05:44.399 INFO [stderr] warning: unused import: `std::mem`
Dec 04 14:05:44.399 INFO [stderr]  --> src/main.rs:2:5
Dec 04 14:05:44.399 INFO [stderr]   |
Dec 04 14:05:44.399 INFO [stderr] 2 | use std::mem;
Dec 04 14:05:44.399 INFO [stderr]   |     ^^^^^^^^
Dec 04 14:05:44.399 INFO [stderr]   |
Dec 04 14:05:44.399 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 14:05:44.399 INFO [stderr] 
Dec 04 14:05:44.399 INFO [stderr] warning: unused import: `std::char::from_u32`
Dec 04 14:05:44.399 INFO [stderr]  --> src/main.rs:5:5
Dec 04 14:05:44.399 INFO [stderr]   |
Dec 04 14:05:44.399 INFO [stderr] 5 | use std::char::from_u32;
Dec 04 14:05:44.399 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:44.399 INFO [stderr] 
Dec 04 14:05:44.403 INFO [stderr] warning: unused import: `std::mem`
Dec 04 14:05:44.403 INFO [stderr]  --> src/main.rs:2:5
Dec 04 14:05:44.403 INFO [stderr]   |
Dec 04 14:05:44.403 INFO [stderr] 2 | use std::mem;
Dec 04 14:05:44.403 INFO [stderr]   |     ^^^^^^^^
Dec 04 14:05:44.403 INFO [stderr]   |
Dec 04 14:05:44.403 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 14:05:44.403 INFO [stderr] 
Dec 04 14:05:44.403 INFO [stderr] warning: unused import: `std::char::from_u32`
Dec 04 14:05:44.403 INFO [stderr]  --> src/main.rs:5:5
Dec 04 14:05:44.403 INFO [stderr]   |
Dec 04 14:05:44.403 INFO [stderr] 5 | use std::char::from_u32;
Dec 04 14:05:44.403 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:44.403 INFO [stderr] 
Dec 04 14:05:44.480 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 14:05:44.480 INFO [stderr]    --> src/main.rs:142:21
Dec 04 14:05:44.480 INFO [stderr]     |
Dec 04 14:05:44.480 INFO [stderr] 142 |                     stdout.write(&byte);
Dec 04 14:05:44.480 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:44.480 INFO [stderr]     |
Dec 04 14:05:44.480 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 14:05:44.480 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 14:05:44.480 INFO [stderr] 
Dec 04 14:05:44.480 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 14:05:44.480 INFO [stderr]    --> src/main.rs:146:21
Dec 04 14:05:44.480 INFO [stderr]     |
Dec 04 14:05:44.480 INFO [stderr] 146 |                     stdin.read(&mut byte);
Dec 04 14:05:44.480 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:44.480 INFO [stderr]     |
Dec 04 14:05:44.480 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 14:05:44.480 INFO [stderr] 
Dec 04 14:05:44.491 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 14:05:44.491 INFO [stderr]    --> src/main.rs:142:21
Dec 04 14:05:44.491 INFO [stderr]     |
Dec 04 14:05:44.491 INFO [stderr] 142 |                     stdout.write(&byte);
Dec 04 14:05:44.491 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:44.491 INFO [stderr]     |
Dec 04 14:05:44.491 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 14:05:44.491 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 14:05:44.491 INFO [stderr] 
Dec 04 14:05:44.491 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 14:05:44.491 INFO [stderr]    --> src/main.rs:146:21
Dec 04 14:05:44.491 INFO [stderr]     |
Dec 04 14:05:44.491 INFO [stderr] 146 |                     stdin.read(&mut byte);
Dec 04 14:05:44.491 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:05:44.491 INFO [stderr]     |
Dec 04 14:05:44.491 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 14:05:44.491 INFO [stderr] 
Dec 04 14:05:44.503 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Dec 04 14:05:44.506 INFO [stderr] su: No module specific data is present
Dec 04 14:05:44.907 INFO running `"docker" "inspect" "66b45c6298b662b99ffcf79d56f67cd29df58b29440a77d8afc6a07e6869f11b"`
Dec 04 14:05:45.161 INFO running `"docker" "rm" "-f" "66b45c6298b662b99ffcf79d56f67cd29df58b29440a77d8afc6a07e6869f11b"`
Dec 04 14:05:45.342 INFO [stdout] 66b45c6298b662b99ffcf79d56f67cd29df58b29440a77d8afc6a07e6869f11b