Dec 19 06:31:40.850 INFO checking tylerreisinger/neural-network-deep-learning against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 06:31:40.850 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/tylerreisinger/neural-network-deep-learning:/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 06:31:41.374 INFO [stdout] 182bb2fe2219e9cf5ec3254cb45669f08ca259ab4c44dfb872b6be7ff8b655f4
Dec 19 06:31:41.376 INFO running `"docker" "start" "-a" "182bb2fe2219e9cf5ec3254cb45669f08ca259ab4c44dfb872b6be7ff8b655f4"`
Dec 19 06:31:43.972 INFO [stderr]     Checking neural_net v0.1.0 (/opt/crater/workdir)
Dec 19 06:31:44.344 INFO [stderr] warning: unused import: `super::*`
Dec 19 06:31:44.344 INFO [stderr]    --> src/mnist/idx.rs:402:9
Dec 19 06:31:44.344 INFO [stderr]     |
Dec 19 06:31:44.344 INFO [stderr] 402 |     use super::*;
Dec 19 06:31:44.344 INFO [stderr]     |         ^^^^^^^^
Dec 19 06:31:44.344 INFO [stderr]     |
Dec 19 06:31:44.344 INFO [stderr]     = note: #[warn(unused_imports)] on by default
Dec 19 06:31:44.344 INFO [stderr] 
Dec 19 06:31:44.628 INFO [stderr] warning: unused variable: `labels`
Dec 19 06:31:44.628 INFO [stderr]   --> src/main.rs:12:9
Dec 19 06:31:44.628 INFO [stderr]    |
Dec 19 06:31:44.628 INFO [stderr] 12 |     let labels = 
Dec 19 06:31:44.628 INFO [stderr]    |         ^^^^^^ help: consider using `_labels` instead
Dec 19 06:31:44.628 INFO [stderr]    |
Dec 19 06:31:44.628 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 06:31:44.628 INFO [stderr] 
Dec 19 06:31:44.628 INFO [stderr] warning: unused variable: `images`
Dec 19 06:31:44.628 INFO [stderr]   --> src/main.rs:14:9
Dec 19 06:31:44.628 INFO [stderr]    |
Dec 19 06:31:44.628 INFO [stderr] 14 |     let images = 
Dec 19 06:31:44.628 INFO [stderr]    |         ^^^^^^ help: consider using `_images` instead
Dec 19 06:31:44.628 INFO [stderr] 
Dec 19 06:31:44.804 INFO [stderr] warning: unused variable: `labels`
Dec 19 06:31:44.804 INFO [stderr]   --> src/main.rs:12:9
Dec 19 06:31:44.804 INFO [stderr]    |
Dec 19 06:31:44.804 INFO [stderr] 12 |     let labels = 
Dec 19 06:31:44.804 INFO [stderr]    |         ^^^^^^ help: consider using `_labels` instead
Dec 19 06:31:44.804 INFO [stderr]    |
Dec 19 06:31:44.805 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 06:31:44.805 INFO [stderr] 
Dec 19 06:31:44.805 INFO [stderr] warning: unused variable: `images`
Dec 19 06:31:44.805 INFO [stderr]   --> src/main.rs:14:9
Dec 19 06:31:44.805 INFO [stderr]    |
Dec 19 06:31:44.805 INFO [stderr] 14 |     let images = 
Dec 19 06:31:44.805 INFO [stderr]    |         ^^^^^^ help: consider using `_images` instead
Dec 19 06:31:44.805 INFO [stderr] 
Dec 19 06:31:44.893 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
Dec 19 06:31:45.552 INFO running `"docker" "inspect" "182bb2fe2219e9cf5ec3254cb45669f08ca259ab4c44dfb872b6be7ff8b655f4"`
Dec 19 06:31:45.900 INFO running `"docker" "rm" "-f" "182bb2fe2219e9cf5ec3254cb45669f08ca259ab4c44dfb872b6be7ff8b655f4"`
Dec 19 06:31:46.236 INFO [stdout] 182bb2fe2219e9cf5ec3254cb45669f08ca259ab4c44dfb872b6be7ff8b655f4