Dec 11 15:18:22.497 INFO checking komu/weekend-raytracer against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 15:18:22.498 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-4/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 15:18:22.966 INFO [stdout] 1fc19eba5b18fd9461e664a8589844f91ca994ce467055e47000b1a7b28d3291
Dec 11 15:18:22.968 INFO running `"docker" "start" "-a" "1fc19eba5b18fd9461e664a8589844f91ca994ce467055e47000b1a7b28d3291"`
Dec 11 15:18:25.751 INFO [stderr] usermod: no changes
Dec 11 15:18:25.994 INFO [stderr]     Checking array-init v0.0.4
Dec 11 15:18:26.026 INFO [stderr]     Checking cgmath v0.16.1
Dec 11 15:18:26.027 INFO [stderr]    Compiling num-derive v0.2.2
Dec 11 15:18:30.204 INFO [stderr]     Checking image v0.19.0
Dec 11 15:18:38.500 INFO [stderr]     Checking weekend-raytracer v0.1.0 (/source)
Dec 11 15:18:41.144 INFO [stderr] warning: unused variable: `rng`
Dec 11 15:18:41.145 INFO [stderr]   --> src/main.rs:72:13
Dec 11 15:18:41.145 INFO [stderr]    |
Dec 11 15:18:41.145 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 11 15:18:41.145 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 11 15:18:41.145 INFO [stderr]    |
Dec 11 15:18:41.145 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 15:18:41.145 INFO [stderr] 
Dec 11 15:18:41.164 INFO [stderr] warning: variable does not need to be mutable
Dec 11 15:18:41.164 INFO [stderr]   --> src/main.rs:72:9
Dec 11 15:18:41.164 INFO [stderr]    |
Dec 11 15:18:41.164 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 11 15:18:41.164 INFO [stderr]    |         ----^^^
Dec 11 15:18:41.164 INFO [stderr]    |         |
Dec 11 15:18:41.164 INFO [stderr]    |         help: remove this `mut`
Dec 11 15:18:41.164 INFO [stderr]    |
Dec 11 15:18:41.164 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 15:18:41.164 INFO [stderr] 
Dec 11 15:18:41.326 INFO [stderr] warning: unused variable: `rng`
Dec 11 15:18:41.326 INFO [stderr]   --> src/main.rs:72:13
Dec 11 15:18:41.326 INFO [stderr]    |
Dec 11 15:18:41.326 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 11 15:18:41.327 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 11 15:18:41.327 INFO [stderr]    |
Dec 11 15:18:41.327 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 15:18:41.327 INFO [stderr] 
Dec 11 15:18:41.352 INFO [stderr] warning: variable does not need to be mutable
Dec 11 15:18:41.352 INFO [stderr]   --> src/main.rs:72:9
Dec 11 15:18:41.352 INFO [stderr]    |
Dec 11 15:18:41.352 INFO [stderr] 72 |     let mut rng = thread_rng();
Dec 11 15:18:41.352 INFO [stderr]    |         ----^^^
Dec 11 15:18:41.352 INFO [stderr]    |         |
Dec 11 15:18:41.352 INFO [stderr]    |         help: remove this `mut`
Dec 11 15:18:41.352 INFO [stderr]    |
Dec 11 15:18:41.352 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 15:18:41.352 INFO [stderr] 
Dec 11 15:18:41.462 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.69s
Dec 11 15:18:41.473 INFO [stderr] su: No module specific data is present
Dec 11 15:18:42.558 INFO running `"docker" "inspect" "1fc19eba5b18fd9461e664a8589844f91ca994ce467055e47000b1a7b28d3291"`
Dec 11 15:18:42.974 INFO running `"docker" "rm" "-f" "1fc19eba5b18fd9461e664a8589844f91ca994ce467055e47000b1a7b28d3291"`
Dec 11 15:18:43.364 INFO [stdout] 1fc19eba5b18fd9461e664a8589844f91ca994ce467055e47000b1a7b28d3291