Dec 19 20:39:48.433 INFO checking aleyan/langtonsant against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 20:39:48.433 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/aleyan/langtonsant:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:39:48.711 INFO [stdout] 4da296ba47d77e9004669035114b7140eae0473e7a89f218741d3d7e4291c566
Dec 19 20:39:48.720 INFO running `"docker" "start" "-a" "4da296ba47d77e9004669035114b7140eae0473e7a89f218741d3d7e4291c566"`
Dec 19 20:39:49.616 INFO [stderr]    Compiling phf_generator v0.7.23
Dec 19 20:39:49.616 INFO [stderr]    Compiling syn v0.14.9
Dec 19 20:39:49.616 INFO [stderr]     Checking alga v0.7.2
Dec 19 20:39:50.093 INFO [stderr]    Compiling phf_codegen v0.7.23
Dec 19 20:39:50.906 INFO [stderr]    Compiling palette v0.4.1
Dec 19 20:39:57.524 INFO [stderr]     Checking nalgebra v0.16.8
Dec 19 20:40:05.796 INFO [stderr]    Compiling palette_derive v0.4.1
Dec 19 20:40:32.547 INFO [stderr]     Checking langtonsant v0.1.0 (/opt/crater/workdir)
Dec 19 20:40:33.768 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:40:33.768 INFO [stderr]    --> src/canvas.rs:174:9
Dec 19 20:40:33.768 INFO [stderr]     |
Dec 19 20:40:33.768 INFO [stderr] 174 | /         write!(
Dec 19 20:40:33.768 INFO [stderr] 175 | |             out,
Dec 19 20:40:33.768 INFO [stderr] 176 | |             "{}{}{}",
Dec 19 20:40:33.768 INFO [stderr] 177 | |             cursor::Goto(1, (self.rows + 1) as u16),
Dec 19 20:40:33.768 INFO [stderr] 178 | |             style::Reset,
Dec 19 20:40:33.768 INFO [stderr] 179 | |             cursor::Show
Dec 19 20:40:33.768 INFO [stderr] 180 | |         );
Dec 19 20:40:33.768 INFO [stderr]     | |__________^
Dec 19 20:40:33.768 INFO [stderr]     |
Dec 19 20:40:33.768 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 20:40:33.768 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:40:33.768 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 19 20:40:33.768 INFO [stderr] 
Dec 19 20:40:33.893 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 20:40:33.893 INFO [stderr]    --> src/canvas.rs:174:9
Dec 19 20:40:33.893 INFO [stderr]     |
Dec 19 20:40:33.893 INFO [stderr] 174 | /         write!(
Dec 19 20:40:33.893 INFO [stderr] 175 | |             out,
Dec 19 20:40:33.893 INFO [stderr] 176 | |             "{}{}{}",
Dec 19 20:40:33.893 INFO [stderr] 177 | |             cursor::Goto(1, (self.rows + 1) as u16),
Dec 19 20:40:33.893 INFO [stderr] 178 | |             style::Reset,
Dec 19 20:40:33.893 INFO [stderr] 179 | |             cursor::Show
Dec 19 20:40:33.893 INFO [stderr] 180 | |         );
Dec 19 20:40:33.893 INFO [stderr]     | |__________^
Dec 19 20:40:33.893 INFO [stderr]     |
Dec 19 20:40:33.893 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 20:40:33.893 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 20:40:33.893 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 19 20:40:33.893 INFO [stderr] 
Dec 19 20:40:33.965 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.43s
Dec 19 20:40:34.916 INFO running `"docker" "inspect" "4da296ba47d77e9004669035114b7140eae0473e7a89f218741d3d7e4291c566"`
Dec 19 20:40:35.183 INFO running `"docker" "rm" "-f" "4da296ba47d77e9004669035114b7140eae0473e7a89f218741d3d7e4291c566"`
Dec 19 20:40:35.504 INFO [stdout] 4da296ba47d77e9004669035114b7140eae0473e7a89f218741d3d7e4291c566