Dec 17 19:37:34.295 INFO checking mikeyhew/brainfuck against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 19:37:34.295 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/mikeyhew/brainfuck:/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:37:34.721 INFO [stdout] 7745b8ebfc6eda03e87841a0bcf120beca805c4993890c4f332e29d768203e1c
Dec 17 19:37:34.723 INFO running `"docker" "start" "-a" "7745b8ebfc6eda03e87841a0bcf120beca805c4993890c4f332e29d768203e1c"`
Dec 17 19:37:36.657 INFO [stderr]     Checking brainfuck v0.1.0 (/opt/crater/workdir)
Dec 17 19:37:36.940 INFO [stderr] warning: unused import: `std::mem`
Dec 17 19:37:36.941 INFO [stderr]  --> src/main.rs:2:5
Dec 17 19:37:36.941 INFO [stderr]   |
Dec 17 19:37:36.941 INFO [stderr] 2 | use std::mem;
Dec 17 19:37:36.941 INFO [stderr]   |     ^^^^^^^^
Dec 17 19:37:36.941 INFO [stderr]   |
Dec 17 19:37:36.941 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:37:36.941 INFO [stderr] 
Dec 17 19:37:36.941 INFO [stderr] warning: unused import: `std::char::from_u32`
Dec 17 19:37:36.941 INFO [stderr]  --> src/main.rs:5:5
Dec 17 19:37:36.941 INFO [stderr]   |
Dec 17 19:37:36.941 INFO [stderr] 5 | use std::char::from_u32;
Dec 17 19:37:36.941 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:36.941 INFO [stderr] 
Dec 17 19:37:37.085 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:37:37.085 INFO [stderr]    --> src/main.rs:142:21
Dec 17 19:37:37.085 INFO [stderr]     |
Dec 17 19:37:37.085 INFO [stderr] 142 |                     stdout.write(&byte);
Dec 17 19:37:37.085 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:37.085 INFO [stderr]     |
Dec 17 19:37:37.085 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 19:37:37.085 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:37:37.085 INFO [stderr] 
Dec 17 19:37:37.085 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:37:37.085 INFO [stderr]    --> src/main.rs:146:21
Dec 17 19:37:37.085 INFO [stderr]     |
Dec 17 19:37:37.085 INFO [stderr] 146 |                     stdin.read(&mut byte);
Dec 17 19:37:37.085 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:37.085 INFO [stderr]     |
Dec 17 19:37:37.085 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:37:37.085 INFO [stderr] 
Dec 17 19:37:37.111 INFO [stderr] warning: unused import: `std::mem`
Dec 17 19:37:37.112 INFO [stderr]  --> src/main.rs:2:5
Dec 17 19:37:37.112 INFO [stderr]   |
Dec 17 19:37:37.112 INFO [stderr] 2 | use std::mem;
Dec 17 19:37:37.112 INFO [stderr]   |     ^^^^^^^^
Dec 17 19:37:37.112 INFO [stderr]   |
Dec 17 19:37:37.112 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:37:37.112 INFO [stderr] 
Dec 17 19:37:37.112 INFO [stderr] warning: unused import: `std::char::from_u32`
Dec 17 19:37:37.112 INFO [stderr]  --> src/main.rs:5:5
Dec 17 19:37:37.112 INFO [stderr]   |
Dec 17 19:37:37.112 INFO [stderr] 5 | use std::char::from_u32;
Dec 17 19:37:37.112 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:37.116 INFO [stderr] 
Dec 17 19:37:37.200 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:37:37.200 INFO [stderr]    --> src/main.rs:142:21
Dec 17 19:37:37.200 INFO [stderr]     |
Dec 17 19:37:37.200 INFO [stderr] 142 |                     stdout.write(&byte);
Dec 17 19:37:37.200 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:37.200 INFO [stderr]     |
Dec 17 19:37:37.200 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 19:37:37.200 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:37:37.200 INFO [stderr] 
Dec 17 19:37:37.201 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:37:37.201 INFO [stderr]    --> src/main.rs:146:21
Dec 17 19:37:37.201 INFO [stderr]     |
Dec 17 19:37:37.201 INFO [stderr] 146 |                     stdin.read(&mut byte);
Dec 17 19:37:37.201 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:37.201 INFO [stderr]     |
Dec 17 19:37:37.201 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:37:37.201 INFO [stderr] 
Dec 17 19:37:37.258 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
Dec 17 19:37:37.750 INFO running `"docker" "inspect" "7745b8ebfc6eda03e87841a0bcf120beca805c4993890c4f332e29d768203e1c"`
Dec 17 19:37:37.984 INFO running `"docker" "rm" "-f" "7745b8ebfc6eda03e87841a0bcf120beca805c4993890c4f332e29d768203e1c"`
Dec 17 19:37:38.200 INFO [stdout] 7745b8ebfc6eda03e87841a0bcf120beca805c4993890c4f332e29d768203e1c