Dec 04 22:47:09.913 INFO checking aleyan/langtonsant against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 22:47:09.913 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/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 22:47:10.351 INFO [stdout] 60a6af97f902dc6fc57a480d6a4002dde11fb922f81c7c4fd331189a598f7f04
Dec 04 22:47:10.355 INFO running `"docker" "start" "-a" "60a6af97f902dc6fc57a480d6a4002dde11fb922f81c7c4fd331189a598f7f04"`
Dec 04 22:47:11.623 INFO [stderr] usermod: no changes
Dec 04 22:47:11.805 INFO [stderr]    Compiling syn v0.14.9
Dec 04 22:47:11.805 INFO [stderr]    Compiling palette v0.4.1
Dec 04 22:47:26.201 INFO [stderr]    Compiling palette_derive v0.4.1
Dec 04 22:47:37.487 INFO [stderr]     Checking langtonsant v0.1.0 (/source)
Dec 04 22:47:40.696 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 22:47:40.696 INFO [stderr]    --> src/canvas.rs:174:9
Dec 04 22:47:40.696 INFO [stderr]     |
Dec 04 22:47:40.697 INFO [stderr] 174 | /         write!(
Dec 04 22:47:40.697 INFO [stderr] 175 | |             out,
Dec 04 22:47:40.697 INFO [stderr] 176 | |             "{}{}{}",
Dec 04 22:47:40.697 INFO [stderr] 177 | |             cursor::Goto(1, (self.rows + 1) as u16),
Dec 04 22:47:40.697 INFO [stderr] 178 | |             style::Reset,
Dec 04 22:47:40.697 INFO [stderr] 179 | |             cursor::Show
Dec 04 22:47:40.697 INFO [stderr] 180 | |         );
Dec 04 22:47:40.697 INFO [stderr]     | |__________^
Dec 04 22:47:40.697 INFO [stderr]     |
Dec 04 22:47:40.697 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 22:47:40.697 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 22:47:40.697 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 04 22:47:40.697 INFO [stderr] 
Dec 04 22:47:40.705 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 04 22:47:40.706 INFO [stderr]    --> src/canvas.rs:174:9
Dec 04 22:47:40.706 INFO [stderr]     |
Dec 04 22:47:40.706 INFO [stderr] 174 | /         write!(
Dec 04 22:47:40.707 INFO [stderr] 175 | |             out,
Dec 04 22:47:40.707 INFO [stderr] 176 | |             "{}{}{}",
Dec 04 22:47:40.707 INFO [stderr] 177 | |             cursor::Goto(1, (self.rows + 1) as u16),
Dec 04 22:47:40.708 INFO [stderr] 178 | |             style::Reset,
Dec 04 22:47:40.708 INFO [stderr] 179 | |             cursor::Show
Dec 04 22:47:40.708 INFO [stderr] 180 | |         );
Dec 04 22:47:40.709 INFO [stderr]     | |__________^
Dec 04 22:47:40.709 INFO [stderr]     |
Dec 04 22:47:40.709 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 04 22:47:40.709 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 04 22:47:40.710 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 04 22:47:40.710 INFO [stderr] 
Dec 04 22:47:40.740 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.09s
Dec 04 22:47:40.746 INFO [stderr] su: No module specific data is present
Dec 04 22:47:41.211 INFO running `"docker" "inspect" "60a6af97f902dc6fc57a480d6a4002dde11fb922f81c7c4fd331189a598f7f04"`
Dec 04 22:47:41.362 INFO running `"docker" "rm" "-f" "60a6af97f902dc6fc57a480d6a4002dde11fb922f81c7c4fd331189a598f7f04"`
Dec 04 22:47:41.449 INFO [stdout] 60a6af97f902dc6fc57a480d6a4002dde11fb922f81c7c4fd331189a598f7f04