Dec 11 15:18:16.019 INFO checking komu/weekend-raytracer against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 15:18:16.019 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 11 15:18:16.441 INFO [stdout] ca41d6bfd239038f73dd3c77c202a71ef20bde49bd9a524504955bd157bc45c9
Dec 11 15:18:16.443 INFO running `"docker" "start" "-a" "ca41d6bfd239038f73dd3c77c202a71ef20bde49bd9a524504955bd157bc45c9"`
Dec 11 15:18:18.685 INFO [stderr] usermod: no changes
Dec 11 15:18:18.832 INFO [stderr]     Checking array-init v0.0.4
Dec 11 15:18:18.832 INFO [stderr]     Checking cgmath v0.16.1
Dec 11 15:18:18.832 INFO [stderr]    Compiling num-derive v0.2.2
Dec 11 15:18:23.464 INFO [stderr]     Checking image v0.19.0
Dec 11 15:18:33.438 INFO [stderr]     Checking weekend-raytracer v0.1.0 (/source)
Dec 11 15:18:35.832 INFO [stderr] warning: unused variable: `rng`
Dec 11 15:18:35.832 INFO [stderr]   --> src/main.rs:72:13
Dec 11 15:18:35.832 INFO [stderr]    |
Dec 11 15:18:35.832 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 11 15:18:35.832 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 11 15:18:35.832 INFO [stderr]    |
Dec 11 15:18:35.833 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 15:18:35.833 INFO [stderr] 
Dec 11 15:18:35.878 INFO [stderr] warning: variable does not need to be mutable
Dec 11 15:18:35.878 INFO [stderr]   --> src/main.rs:72:9
Dec 11 15:18:35.878 INFO [stderr]    |
Dec 11 15:18:35.878 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 11 15:18:35.878 INFO [stderr]    |         ----^^^
Dec 11 15:18:35.878 INFO [stderr]    |         |
Dec 11 15:18:35.878 INFO [stderr]    |         help: remove this `mut`
Dec 11 15:18:35.878 INFO [stderr]    |
Dec 11 15:18:35.878 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 15:18:35.878 INFO [stderr] 
Dec 11 15:18:36.296 INFO [stderr] warning: unused variable: `rng`
Dec 11 15:18:36.296 INFO [stderr]   --> src/main.rs:72:13
Dec 11 15:18:36.296 INFO [stderr]    |
Dec 11 15:18:36.296 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 11 15:18:36.296 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 11 15:18:36.296 INFO [stderr]    |
Dec 11 15:18:36.296 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 15:18:36.296 INFO [stderr] 
Dec 11 15:18:36.308 INFO [stderr] warning: variable does not need to be mutable
Dec 11 15:18:36.308 INFO [stderr]   --> src/main.rs:72:9
Dec 11 15:18:36.308 INFO [stderr]    |
Dec 11 15:18:36.308 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 11 15:18:36.308 INFO [stderr]    |         ----^^^
Dec 11 15:18:36.308 INFO [stderr]    |         |
Dec 11 15:18:36.308 INFO [stderr]    |         help: remove this `mut`
Dec 11 15:18:36.308 INFO [stderr]    |
Dec 11 15:18:36.308 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 15:18:36.308 INFO [stderr] 
Dec 11 15:18:36.424 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.72s
Dec 11 15:18:36.427 INFO [stderr] su: No module specific data is present
Dec 11 15:18:37.364 INFO running `"docker" "inspect" "ca41d6bfd239038f73dd3c77c202a71ef20bde49bd9a524504955bd157bc45c9"`
Dec 11 15:18:37.720 INFO running `"docker" "rm" "-f" "ca41d6bfd239038f73dd3c77c202a71ef20bde49bd9a524504955bd157bc45c9"`
Dec 11 15:18:38.063 INFO [stdout] ca41d6bfd239038f73dd3c77c202a71ef20bde49bd9a524504955bd157bc45c9