Dec 11 07:21:41.234 INFO checking trcm/gameofrust against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 07:21:41.234 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 07:21:41.703 INFO [stdout] ccd87ceaa3186f9ebe7df8da1dd92a70efd0336111a427bf85baf2312dcfeaf5
Dec 11 07:21:41.705 INFO running `"docker" "start" "-a" "ccd87ceaa3186f9ebe7df8da1dd92a70efd0336111a427bf85baf2312dcfeaf5"`
Dec 11 07:21:43.094 INFO [stderr] usermod: no changes
Dec 11 07:21:43.264 INFO [stderr]     Checking libc v0.1.12
Dec 11 07:21:43.264 INFO [stderr]    Compiling minifb v0.9.1
Dec 11 07:21:43.268 INFO [stderr]     Checking dylib v0.0.1
Dec 11 07:21:43.268 INFO [stderr]     Checking time v0.1.37
Dec 11 07:21:43.849 INFO [stderr]     Checking x11-dl v2.2.1
Dec 11 07:21:49.473 INFO [stderr]     Checking gameoflife v0.1.0 (/source)
Dec 11 07:21:49.848 INFO [stderr] warning: unused import: `Rng`
Dec 11 07:21:49.848 INFO [stderr]  --> src/main.rs:5:12
Dec 11 07:21:49.848 INFO [stderr]   |
Dec 11 07:21:49.848 INFO [stderr] 5 | use rand::{Rng};
Dec 11 07:21:49.848 INFO [stderr]   |            ^^^
Dec 11 07:21:49.848 INFO [stderr]   |
Dec 11 07:21:49.848 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 07:21:49.848 INFO [stderr] 
Dec 11 07:21:49.978 INFO [stderr] warning: unused variable: `valid`
Dec 11 07:21:49.978 INFO [stderr]   --> src/main.rs:21:9
Dec 11 07:21:49.978 INFO [stderr]    |
Dec 11 07:21:49.978 INFO [stderr] 21 |     let valid: Vec<(u32, u32)> = vec!();
Dec 11 07:21:49.978 INFO [stderr]    |         ^^^^^ help: consider using `_valid` instead
Dec 11 07:21:49.978 INFO [stderr]    |
Dec 11 07:21:49.978 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 07:21:49.978 INFO [stderr] 
Dec 11 07:21:49.978 INFO [stderr] warning: unused variable: `item`
Dec 11 07:21:49.978 INFO [stderr]   --> src/main.rs:49:13
Dec 11 07:21:49.978 INFO [stderr]    |
Dec 11 07:21:49.978 INFO [stderr] 49 |     for (i, item) in current.iter().enumerate() {
Dec 11 07:21:49.978 INFO [stderr]    |             ^^^^ help: consider using `_item` instead
Dec 11 07:21:49.978 INFO [stderr] 
Dec 11 07:21:49.979 INFO [stderr] warning: unused variable: `rng`
Dec 11 07:21:49.979 INFO [stderr]    --> src/main.rs:111:13
Dec 11 07:21:49.979 INFO [stderr]     |
Dec 11 07:21:49.979 INFO [stderr] 111 |     let mut rng = rand::thread_rng();
Dec 11 07:21:49.979 INFO [stderr]     |             ^^^ help: consider using `_rng` instead
Dec 11 07:21:49.979 INFO [stderr] 
Dec 11 07:21:49.988 INFO [stderr] warning: unused import: `Rng`
Dec 11 07:21:49.988 INFO [stderr]  --> src/main.rs:5:12
Dec 11 07:21:49.988 INFO [stderr]   |
Dec 11 07:21:49.988 INFO [stderr] 5 | use rand::{Rng};
Dec 11 07:21:49.988 INFO [stderr]   |            ^^^
Dec 11 07:21:49.988 INFO [stderr]   |
Dec 11 07:21:49.988 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 07:21:49.988 INFO [stderr] 
Dec 11 07:21:50.006 INFO [stderr] warning: variable does not need to be mutable
Dec 11 07:21:50.006 INFO [stderr]    --> src/main.rs:111:9
Dec 11 07:21:50.006 INFO [stderr]     |
Dec 11 07:21:50.007 INFO [stderr] 111 |     let mut rng = rand::thread_rng();
Dec 11 07:21:50.007 INFO [stderr]     |         ----^^^
Dec 11 07:21:50.007 INFO [stderr]     |         |
Dec 11 07:21:50.007 INFO [stderr]     |         help: remove this `mut`
Dec 11 07:21:50.007 INFO [stderr]     |
Dec 11 07:21:50.007 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 07:21:50.007 INFO [stderr] 
Dec 11 07:21:50.121 INFO [stderr] warning: unused variable: `valid`
Dec 11 07:21:50.121 INFO [stderr]   --> src/main.rs:21:9
Dec 11 07:21:50.121 INFO [stderr]    |
Dec 11 07:21:50.121 INFO [stderr] 21 |     let valid: Vec<(u32, u32)> = vec!();
Dec 11 07:21:50.121 INFO [stderr]    |         ^^^^^ help: consider using `_valid` instead
Dec 11 07:21:50.121 INFO [stderr]    |
Dec 11 07:21:50.121 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 07:21:50.121 INFO [stderr] 
Dec 11 07:21:50.121 INFO [stderr] warning: unused variable: `item`
Dec 11 07:21:50.121 INFO [stderr]   --> src/main.rs:49:13
Dec 11 07:21:50.121 INFO [stderr]    |
Dec 11 07:21:50.121 INFO [stderr] 49 |     for (i, item) in current.iter().enumerate() {
Dec 11 07:21:50.121 INFO [stderr]    |             ^^^^ help: consider using `_item` instead
Dec 11 07:21:50.121 INFO [stderr] 
Dec 11 07:21:50.121 INFO [stderr] warning: unused variable: `rng`
Dec 11 07:21:50.121 INFO [stderr]    --> src/main.rs:111:13
Dec 11 07:21:50.121 INFO [stderr]     |
Dec 11 07:21:50.121 INFO [stderr] 111 |     let mut rng = rand::thread_rng();
Dec 11 07:21:50.121 INFO [stderr]     |             ^^^ help: consider using `_rng` instead
Dec 11 07:21:50.121 INFO [stderr] 
Dec 11 07:21:50.172 INFO [stderr] warning: variable does not need to be mutable
Dec 11 07:21:50.172 INFO [stderr]    --> src/main.rs:111:9
Dec 11 07:21:50.172 INFO [stderr]     |
Dec 11 07:21:50.172 INFO [stderr] 111 |     let mut rng = rand::thread_rng();
Dec 11 07:21:50.172 INFO [stderr]     |         ----^^^
Dec 11 07:21:50.172 INFO [stderr]     |         |
Dec 11 07:21:50.172 INFO [stderr]     |         help: remove this `mut`
Dec 11 07:21:50.172 INFO [stderr]     |
Dec 11 07:21:50.172 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 07:21:50.172 INFO [stderr] 
Dec 11 07:21:50.200 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.07s
Dec 11 07:21:50.208 INFO [stderr] su: No module specific data is present
Dec 11 07:21:51.098 INFO running `"docker" "inspect" "ccd87ceaa3186f9ebe7df8da1dd92a70efd0336111a427bf85baf2312dcfeaf5"`
Dec 11 07:21:51.422 INFO running `"docker" "rm" "-f" "ccd87ceaa3186f9ebe7df8da1dd92a70efd0336111a427bf85baf2312dcfeaf5"`
Dec 11 07:21:51.723 INFO [stdout] ccd87ceaa3186f9ebe7df8da1dd92a70efd0336111a427bf85baf2312dcfeaf5