Dec 19 12:38:47.728 INFO checking mikeyhew/brainfuck against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 12:38:47.728 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:38:48.066 INFO [stdout] 035d055c6166ae043cde409d19e92dddd16b7c398aa32d5492532a409693a913
Dec 19 12:38:48.073 INFO running `"docker" "start" "-a" "035d055c6166ae043cde409d19e92dddd16b7c398aa32d5492532a409693a913"`
Dec 19 12:38:49.144 INFO [stderr]     Checking brainfuck v0.1.0 (/opt/crater/workdir)
Dec 19 12:38:49.319 INFO [stderr] warning: unused import: `std::mem`
Dec 19 12:38:49.319 INFO [stderr]  --> src/main.rs:2:5
Dec 19 12:38:49.319 INFO [stderr]   |
Dec 19 12:38:49.319 INFO [stderr] 2 | use std::mem;
Dec 19 12:38:49.319 INFO [stderr]   |     ^^^^^^^^
Dec 19 12:38:49.319 INFO [stderr]   |
Dec 19 12:38:49.319 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:38:49.319 INFO [stderr] 
Dec 19 12:38:49.319 INFO [stderr] warning: unused import: `std::char::from_u32`
Dec 19 12:38:49.319 INFO [stderr]  --> src/main.rs:5:5
Dec 19 12:38:49.319 INFO [stderr]   |
Dec 19 12:38:49.319 INFO [stderr] 5 | use std::char::from_u32;
Dec 19 12:38:49.319 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 12:38:49.319 INFO [stderr] 
Dec 19 12:38:49.336 INFO [stderr] warning: unused import: `std::mem`
Dec 19 12:38:49.336 INFO [stderr]  --> src/main.rs:2:5
Dec 19 12:38:49.336 INFO [stderr]   |
Dec 19 12:38:49.336 INFO [stderr] 2 | use std::mem;
Dec 19 12:38:49.336 INFO [stderr]   |     ^^^^^^^^
Dec 19 12:38:49.336 INFO [stderr]   |
Dec 19 12:38:49.336 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:38:49.336 INFO [stderr] 
Dec 19 12:38:49.336 INFO [stderr] warning: unused import: `std::char::from_u32`
Dec 19 12:38:49.336 INFO [stderr]  --> src/main.rs:5:5
Dec 19 12:38:49.336 INFO [stderr]   |
Dec 19 12:38:49.336 INFO [stderr] 5 | use std::char::from_u32;
Dec 19 12:38:49.336 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 19 12:38:49.336 INFO [stderr] 
Dec 19 12:38:49.431 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:38:49.431 INFO [stderr]    --> src/main.rs:142:21
Dec 19 12:38:49.431 INFO [stderr]     |
Dec 19 12:38:49.431 INFO [stderr] 142 |                     stdout.write(&byte);
Dec 19 12:38:49.431 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:38:49.431 INFO [stderr]     |
Dec 19 12:38:49.431 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 12:38:49.431 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:38:49.431 INFO [stderr] 
Dec 19 12:38:49.431 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:38:49.431 INFO [stderr]    --> src/main.rs:146:21
Dec 19 12:38:49.431 INFO [stderr]     |
Dec 19 12:38:49.431 INFO [stderr] 146 |                     stdin.read(&mut byte);
Dec 19 12:38:49.431 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:38:49.431 INFO [stderr]     |
Dec 19 12:38:49.431 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:38:49.431 INFO [stderr] 
Dec 19 12:38:49.439 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:38:49.439 INFO [stderr]    --> src/main.rs:142:21
Dec 19 12:38:49.439 INFO [stderr]     |
Dec 19 12:38:49.439 INFO [stderr] 142 |                     stdout.write(&byte);
Dec 19 12:38:49.439 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:38:49.439 INFO [stderr]     |
Dec 19 12:38:49.439 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 12:38:49.439 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:38:49.439 INFO [stderr] 
Dec 19 12:38:49.439 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 12:38:49.439 INFO [stderr]    --> src/main.rs:146:21
Dec 19 12:38:49.439 INFO [stderr]     |
Dec 19 12:38:49.439 INFO [stderr] 146 |                     stdin.read(&mut byte);
Dec 19 12:38:49.439 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:38:49.439 INFO [stderr]     |
Dec 19 12:38:49.439 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 12:38:49.439 INFO [stderr] 
Dec 19 12:38:49.450 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
Dec 19 12:38:49.769 INFO running `"docker" "inspect" "035d055c6166ae043cde409d19e92dddd16b7c398aa32d5492532a409693a913"`
Dec 19 12:38:49.893 INFO running `"docker" "rm" "-f" "035d055c6166ae043cde409d19e92dddd16b7c398aa32d5492532a409693a913"`
Dec 19 12:38:50.005 INFO [stdout] 035d055c6166ae043cde409d19e92dddd16b7c398aa32d5492532a409693a913