Dec 19 14:10:02.838 INFO checking komu/weekend-raytracer against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 14:10:02.838 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/komu/weekend-raytracer:/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 14:10:03.277 INFO [stdout] 0aaababc9cc4c471b360c69faa5ae5484f36f59947c99948a296b40ba98b6bd6
Dec 19 14:10:03.282 INFO running `"docker" "start" "-a" "0aaababc9cc4c471b360c69faa5ae5484f36f59947c99948a296b40ba98b6bd6"`
Dec 19 14:10:05.191 INFO [stderr]     Checking array-init v0.0.4
Dec 19 14:10:05.195 INFO [stderr]     Checking cgmath v0.16.1
Dec 19 14:10:05.195 INFO [stderr]    Compiling num-derive v0.2.2
Dec 19 14:10:08.822 INFO [stderr]     Checking image v0.19.0
Dec 19 14:10:20.312 INFO [stderr]     Checking weekend-raytracer v0.1.0 (/opt/crater/workdir)
Dec 19 14:10:21.536 INFO [stderr] warning: unused variable: `rng`
Dec 19 14:10:21.536 INFO [stderr]   --> src/main.rs:72:13
Dec 19 14:10:21.536 INFO [stderr]    |
Dec 19 14:10:21.536 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 19 14:10:21.536 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 19 14:10:21.536 INFO [stderr]    |
Dec 19 14:10:21.536 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 14:10:21.536 INFO [stderr] 
Dec 19 14:10:21.583 INFO [stderr] warning: variable does not need to be mutable
Dec 19 14:10:21.583 INFO [stderr]   --> src/main.rs:72:9
Dec 19 14:10:21.583 INFO [stderr]    |
Dec 19 14:10:21.583 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 19 14:10:21.583 INFO [stderr]    |         ----^^^
Dec 19 14:10:21.583 INFO [stderr]    |         |
Dec 19 14:10:21.583 INFO [stderr]    |         help: remove this `mut`
Dec 19 14:10:21.583 INFO [stderr]    |
Dec 19 14:10:21.583 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 14:10:21.584 INFO [stderr] 
Dec 19 14:10:21.816 INFO [stderr] warning: unused variable: `rng`
Dec 19 14:10:21.816 INFO [stderr]   --> src/main.rs:72:13
Dec 19 14:10:21.816 INFO [stderr]    |
Dec 19 14:10:21.816 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 19 14:10:21.816 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 19 14:10:21.816 INFO [stderr]    |
Dec 19 14:10:21.816 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 14:10:21.816 INFO [stderr] 
Dec 19 14:10:21.833 INFO [stderr] warning: variable does not need to be mutable
Dec 19 14:10:21.834 INFO [stderr]   --> src/main.rs:72:9
Dec 19 14:10:21.834 INFO [stderr]    |
Dec 19 14:10:21.834 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 19 14:10:21.834 INFO [stderr]    |         ----^^^
Dec 19 14:10:21.834 INFO [stderr]    |         |
Dec 19 14:10:21.834 INFO [stderr]    |         help: remove this `mut`
Dec 19 14:10:21.834 INFO [stderr]    |
Dec 19 14:10:21.834 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 14:10:21.834 INFO [stderr] 
Dec 19 14:10:21.944 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.92s
Dec 19 14:10:23.584 INFO running `"docker" "inspect" "0aaababc9cc4c471b360c69faa5ae5484f36f59947c99948a296b40ba98b6bd6"`
Dec 19 14:10:23.890 INFO running `"docker" "rm" "-f" "0aaababc9cc4c471b360c69faa5ae5484f36f59947c99948a296b40ba98b6bd6"`
Dec 19 14:10:24.188 INFO [stdout] 0aaababc9cc4c471b360c69faa5ae5484f36f59947c99948a296b40ba98b6bd6