Dec 17 15:09:52.407 INFO checking sn99/mandelbrot against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 15:09:52.407 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/sn99/mandelbrot:/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 15:09:52.838 INFO [stdout] 8273deb009a70a9fe22421429b3054d72e80911a255fb19295728b4cc93409eb
Dec 17 15:09:52.840 INFO running `"docker" "start" "-a" "8273deb009a70a9fe22421429b3054d72e80911a255fb19295728b4cc93409eb"`
Dec 17 15:09:54.780 INFO [stderr]     Checking crossbeam-epoch v0.7.0
Dec 17 15:09:54.780 INFO [stderr]    Compiling syn v0.15.15
Dec 17 15:09:54.790 INFO [stderr]     Checking rand v0.6.1
Dec 17 15:09:54.810 INFO [stderr]     Checking num v0.2.0
Dec 17 15:09:56.052 INFO [stderr]     Checking crossbeam-deque v0.6.3
Dec 17 15:09:59.320 INFO [stderr]     Checking parking_lot_core v0.4.0
Dec 17 15:10:00.414 INFO [stderr]     Checking parking_lot v0.7.0
Dec 17 15:10:01.357 INFO [stderr]     Checking crossbeam-channel v0.3.4
Dec 17 15:10:05.414 INFO [stderr]     Checking crossbeam v0.6.0
Dec 17 15:10:08.668 INFO [stderr]    Compiling num-derive v0.2.3
Dec 17 15:10:14.505 INFO [stderr]     Checking tiff v0.2.1
Dec 17 15:10:15.232 INFO [stderr]     Checking image v0.20.1
Dec 17 15:10:19.780 INFO [stderr]     Checking mandelbrot v0.1.0 (/opt/crater/workdir)
Dec 17 15:10:20.407 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 15:10:20.408 INFO [stderr]    --> src/main.rs:141:9
Dec 17 15:10:20.408 INFO [stderr]     |
Dec 17 15:10:20.408 INFO [stderr] 141 | /         crossbeam::scope(|spawner| {
Dec 17 15:10:20.409 INFO [stderr] 142 | |             for (i, band) in bands.into_iter().enumerate() {
Dec 17 15:10:20.409 INFO [stderr] 143 | |                 let top = rows_per_band * i;
Dec 17 15:10:20.409 INFO [stderr] 144 | |                 let height = band.len() / bounds.0;
Dec 17 15:10:20.410 INFO [stderr] ...   |
Dec 17 15:10:20.410 INFO [stderr] 153 | |             }
Dec 17 15:10:20.410 INFO [stderr] 154 | |         });
Dec 17 15:10:20.411 INFO [stderr]     | |___________^
Dec 17 15:10:20.411 INFO [stderr]     |
Dec 17 15:10:20.411 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 15:10:20.412 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 15:10:20.412 INFO [stderr] 
Dec 17 15:10:20.465 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 17 15:10:20.465 INFO [stderr]    --> src/main.rs:141:9
Dec 17 15:10:20.465 INFO [stderr]     |
Dec 17 15:10:20.465 INFO [stderr] 141 | /         crossbeam::scope(|spawner| {
Dec 17 15:10:20.465 INFO [stderr] 142 | |             for (i, band) in bands.into_iter().enumerate() {
Dec 17 15:10:20.465 INFO [stderr] 143 | |                 let top = rows_per_band * i;
Dec 17 15:10:20.465 INFO [stderr] 144 | |                 let height = band.len() / bounds.0;
Dec 17 15:10:20.465 INFO [stderr] ...   |
Dec 17 15:10:20.465 INFO [stderr] 153 | |             }
Dec 17 15:10:20.465 INFO [stderr] 154 | |         });
Dec 17 15:10:20.465 INFO [stderr]     | |___________^
Dec 17 15:10:20.466 INFO [stderr]     |
Dec 17 15:10:20.466 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 17 15:10:20.466 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 17 15:10:20.466 INFO [stderr] 
Dec 17 15:10:20.509 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.94s
Dec 17 15:10:21.145 INFO running `"docker" "inspect" "8273deb009a70a9fe22421429b3054d72e80911a255fb19295728b4cc93409eb"`
Dec 17 15:10:21.306 INFO running `"docker" "rm" "-f" "8273deb009a70a9fe22421429b3054d72e80911a255fb19295728b4cc93409eb"`
Dec 17 15:10:21.460 INFO [stdout] 8273deb009a70a9fe22421429b3054d72e80911a255fb19295728b4cc93409eb