Dec 05 00:21:01.006 INFO checking RollForGuild/RoboGM against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 05 00:21:01.006 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 05 00:21:01.487 INFO [stdout] 00abbd3ab563d71f3fb23a4c430bd1dfc1c058ce17cf18f4af5888aa23f831c3
Dec 05 00:21:01.495 INFO running `"docker" "start" "-a" "00abbd3ab563d71f3fb23a4c430bd1dfc1c058ce17cf18f4af5888aa23f831c3"`
Dec 05 00:21:03.183 INFO [stderr] usermod: no changes
Dec 05 00:21:03.259 INFO [stderr]     Checking robo_gm v0.1.0 (/source)
Dec 05 00:21:04.199 INFO [stderr] warning: unused import: `rand::Rng`
Dec 05 00:21:04.199 INFO [stderr]  --> src/main.rs:4:5
Dec 05 00:21:04.199 INFO [stderr]   |
Dec 05 00:21:04.199 INFO [stderr] 4 | use rand::Rng;
Dec 05 00:21:04.199 INFO [stderr]   |     ^^^^^^^^^
Dec 05 00:21:04.199 INFO [stderr]   |
Dec 05 00:21:04.199 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 00:21:04.199 INFO [stderr] 
Dec 05 00:21:04.307 INFO [stderr] warning: unused variable: `rng`
Dec 05 00:21:04.307 INFO [stderr]   --> src/main.rs:20:13
Dec 05 00:21:04.307 INFO [stderr]    |
Dec 05 00:21:04.307 INFO [stderr] 20 |     let mut rng = rand::thread_rng();
Dec 05 00:21:04.307 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 05 00:21:04.307 INFO [stderr]    |
Dec 05 00:21:04.307 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 00:21:04.307 INFO [stderr] 
Dec 05 00:21:04.307 INFO [stderr] warning: variable does not need to be mutable
Dec 05 00:21:04.307 INFO [stderr]   --> src/main.rs:20:9
Dec 05 00:21:04.307 INFO [stderr]    |
Dec 05 00:21:04.307 INFO [stderr] 20 |     let mut rng = rand::thread_rng();
Dec 05 00:21:04.307 INFO [stderr]    |         ----^^^
Dec 05 00:21:04.307 INFO [stderr]    |         |
Dec 05 00:21:04.307 INFO [stderr]    |         help: remove this `mut`
Dec 05 00:21:04.307 INFO [stderr]    |
Dec 05 00:21:04.307 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 00:21:04.307 INFO [stderr] 
Dec 05 00:21:04.307 INFO [stderr] warning: function is never used: `gen_rectangles`
Dec 05 00:21:04.307 INFO [stderr]   --> src/main.rs:34:1
Dec 05 00:21:04.307 INFO [stderr]    |
Dec 05 00:21:04.307 INFO [stderr] 34 | fn gen_rectangles() -> () {
Dec 05 00:21:04.307 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:21:04.307 INFO [stderr]    |
Dec 05 00:21:04.307 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 00:21:04.307 INFO [stderr] 
Dec 05 00:21:04.318 INFO [stderr] warning: unused import: `rand::Rng`
Dec 05 00:21:04.318 INFO [stderr]  --> src/main.rs:4:5
Dec 05 00:21:04.318 INFO [stderr]   |
Dec 05 00:21:04.318 INFO [stderr] 4 | use rand::Rng;
Dec 05 00:21:04.318 INFO [stderr]   |     ^^^^^^^^^
Dec 05 00:21:04.318 INFO [stderr]   |
Dec 05 00:21:04.318 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 05 00:21:04.318 INFO [stderr] 
Dec 05 00:21:04.359 INFO [stderr] warning: unused variable: `rng`
Dec 05 00:21:04.359 INFO [stderr]   --> src/main.rs:20:13
Dec 05 00:21:04.359 INFO [stderr]    |
Dec 05 00:21:04.359 INFO [stderr] 20 |     let mut rng = rand::thread_rng();
Dec 05 00:21:04.359 INFO [stderr]    |             ^^^ help: consider using `_rng` instead
Dec 05 00:21:04.359 INFO [stderr]    |
Dec 05 00:21:04.359 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 00:21:04.359 INFO [stderr] 
Dec 05 00:21:04.359 INFO [stderr] warning: variable does not need to be mutable
Dec 05 00:21:04.359 INFO [stderr]   --> src/main.rs:20:9
Dec 05 00:21:04.359 INFO [stderr]    |
Dec 05 00:21:04.359 INFO [stderr] 20 |     let mut rng = rand::thread_rng();
Dec 05 00:21:04.359 INFO [stderr]    |         ----^^^
Dec 05 00:21:04.359 INFO [stderr]    |         |
Dec 05 00:21:04.359 INFO [stderr]    |         help: remove this `mut`
Dec 05 00:21:04.359 INFO [stderr]    |
Dec 05 00:21:04.359 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 00:21:04.359 INFO [stderr] 
Dec 05 00:21:04.359 INFO [stderr] warning: function is never used: `gen_rectangles`
Dec 05 00:21:04.359 INFO [stderr]   --> src/main.rs:34:1
Dec 05 00:21:04.359 INFO [stderr]    |
Dec 05 00:21:04.359 INFO [stderr] 34 | fn gen_rectangles() -> () {
Dec 05 00:21:04.359 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:21:04.359 INFO [stderr]    |
Dec 05 00:21:04.359 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 00:21:04.359 INFO [stderr] 
Dec 05 00:21:04.369 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
Dec 05 00:21:04.379 INFO [stderr] su: No module specific data is present
Dec 05 00:21:05.755 INFO running `"docker" "inspect" "00abbd3ab563d71f3fb23a4c430bd1dfc1c058ce17cf18f4af5888aa23f831c3"`
Dec 05 00:21:06.113 INFO running `"docker" "rm" "-f" "00abbd3ab563d71f3fb23a4c430bd1dfc1c058ce17cf18f4af5888aa23f831c3"`
Dec 05 00:21:06.491 INFO [stdout] 00abbd3ab563d71f3fb23a4c430bd1dfc1c058ce17cf18f4af5888aa23f831c3