Dec 17 19:37:33.432 INFO checking mikeyhew/brainfuck against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 19:37:33.433 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 19:37:33.948 INFO [stdout] 083e1faf431059209bb3fd0b91ab89eb6542a51c3d840570338b8c4ab0173e55
Dec 17 19:37:33.954 INFO running `"docker" "start" "-a" "083e1faf431059209bb3fd0b91ab89eb6542a51c3d840570338b8c4ab0173e55"`
Dec 17 19:37:35.376 INFO [stderr]     Checking brainfuck v0.1.0 (/opt/crater/workdir)
Dec 17 19:37:35.672 INFO [stderr] warning: unused import: `std::mem`
Dec 17 19:37:35.672 INFO [stderr]  --> src/main.rs:2:5
Dec 17 19:37:35.672 INFO [stderr]   |
Dec 17 19:37:35.672 INFO [stderr] 2 | use std::mem;
Dec 17 19:37:35.672 INFO [stderr]   |     ^^^^^^^^
Dec 17 19:37:35.672 INFO [stderr]   |
Dec 17 19:37:35.672 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:37:35.672 INFO [stderr] 
Dec 17 19:37:35.672 INFO [stderr] warning: unused import: `std::char::from_u32`
Dec 17 19:37:35.672 INFO [stderr]  --> src/main.rs:5:5
Dec 17 19:37:35.672 INFO [stderr]   |
Dec 17 19:37:35.672 INFO [stderr] 5 | use std::char::from_u32;
Dec 17 19:37:35.672 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:35.672 INFO [stderr] 
Dec 17 19:37:35.684 INFO [stderr] warning: unused import: `std::mem`
Dec 17 19:37:35.684 INFO [stderr]  --> src/main.rs:2:5
Dec 17 19:37:35.684 INFO [stderr]   |
Dec 17 19:37:35.684 INFO [stderr] 2 | use std::mem;
Dec 17 19:37:35.684 INFO [stderr]   |     ^^^^^^^^
Dec 17 19:37:35.684 INFO [stderr]   |
Dec 17 19:37:35.684 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 19:37:35.684 INFO [stderr] 
Dec 17 19:37:35.684 INFO [stderr] warning: unused import: `std::char::from_u32`
Dec 17 19:37:35.684 INFO [stderr]  --> src/main.rs:5:5
Dec 17 19:37:35.684 INFO [stderr]   |
Dec 17 19:37:35.684 INFO [stderr] 5 | use std::char::from_u32;
Dec 17 19:37:35.684 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:35.684 INFO [stderr] 
Dec 17 19:37:35.813 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:37:35.813 INFO [stderr]    --> src/main.rs:142:21
Dec 17 19:37:35.813 INFO [stderr]     |
Dec 17 19:37:35.813 INFO [stderr] 142 |                     stdout.write(&byte);
Dec 17 19:37:35.813 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:35.813 INFO [stderr]     |
Dec 17 19:37:35.813 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 19:37:35.813 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:37:35.813 INFO [stderr] 
Dec 17 19:37:35.813 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:37:35.813 INFO [stderr]    --> src/main.rs:146:21
Dec 17 19:37:35.813 INFO [stderr]     |
Dec 17 19:37:35.813 INFO [stderr] 146 |                     stdin.read(&mut byte);
Dec 17 19:37:35.813 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:35.813 INFO [stderr]     |
Dec 17 19:37:35.813 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:37:35.813 INFO [stderr] 
Dec 17 19:37:35.836 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:37:35.836 INFO [stderr]    --> src/main.rs:142:21
Dec 17 19:37:35.836 INFO [stderr]     |
Dec 17 19:37:35.836 INFO [stderr] 142 |                     stdout.write(&byte);
Dec 17 19:37:35.836 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:35.836 INFO [stderr]     |
Dec 17 19:37:35.836 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 19:37:35.836 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:37:35.836 INFO [stderr] 
Dec 17 19:37:35.844 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 19:37:35.844 INFO [stderr]    --> src/main.rs:146:21
Dec 17 19:37:35.844 INFO [stderr]     |
Dec 17 19:37:35.844 INFO [stderr] 146 |                     stdin.read(&mut byte);
Dec 17 19:37:35.844 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^
Dec 17 19:37:35.844 INFO [stderr]     |
Dec 17 19:37:35.844 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 19:37:35.844 INFO [stderr] 
Dec 17 19:37:35.912 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Dec 17 19:37:36.567 INFO running `"docker" "inspect" "083e1faf431059209bb3fd0b91ab89eb6542a51c3d840570338b8c4ab0173e55"`
Dec 17 19:37:36.846 INFO running `"docker" "rm" "-f" "083e1faf431059209bb3fd0b91ab89eb6542a51c3d840570338b8c4ab0173e55"`
Dec 17 19:37:37.132 INFO [stdout] 083e1faf431059209bb3fd0b91ab89eb6542a51c3d840570338b8c4ab0173e55