Dec 11 20:58:30.921 INFO checking chc4/minesweeper against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 20:58:30.921 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 20:58:31.370 INFO [stdout] 76b8dcb9fbd5dc87485be468461f121ac8504b2acfe0ba541523ac92ac0b6bd4
Dec 11 20:58:31.378 INFO running `"docker" "start" "-a" "76b8dcb9fbd5dc87485be468461f121ac8504b2acfe0ba541523ac92ac0b6bd4"`
Dec 11 20:58:32.568 INFO [stderr] usermod: no changes
Dec 11 20:58:32.656 INFO [stderr]     Checking minesweeper v0.1.0 (/source)
Dec 11 20:58:33.484 INFO [stderr] warning: unused import: `std::io`
Dec 11 20:58:33.484 INFO [stderr]  --> src/main.rs:1:5
Dec 11 20:58:33.484 INFO [stderr]   |
Dec 11 20:58:33.484 INFO [stderr] 1 | use std::io;
Dec 11 20:58:33.484 INFO [stderr]   |     ^^^^^^^
Dec 11 20:58:33.484 INFO [stderr]   |
Dec 11 20:58:33.484 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 20:58:33.484 INFO [stderr] 
Dec 11 20:58:33.636 INFO [stderr] warning: unused variable: `stdin`
Dec 11 20:58:33.636 INFO [stderr]    --> src/main.rs:183:9
Dec 11 20:58:33.636 INFO [stderr]     |
Dec 11 20:58:33.636 INFO [stderr] 183 |     let stdin = std::io::stdin();
Dec 11 20:58:33.636 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Dec 11 20:58:33.636 INFO [stderr]     |
Dec 11 20:58:33.636 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 11 20:58:33.636 INFO [stderr] 
Dec 11 20:58:33.636 INFO [stderr] warning: unused variable: `i`
Dec 11 20:58:33.636 INFO [stderr]   --> src/main.rs:56:13
Dec 11 20:58:33.636 INFO [stderr]    |
Dec 11 20:58:33.636 INFO [stderr] 56 |         for i in 0..y {
Dec 11 20:58:33.636 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 11 20:58:33.636 INFO [stderr] 
Dec 11 20:58:33.636 INFO [stderr] warning: unused variable: `j`
Dec 11 20:58:33.636 INFO [stderr]   --> src/main.rs:58:17
Dec 11 20:58:33.636 INFO [stderr]    |
Dec 11 20:58:33.636 INFO [stderr] 58 |             for j in 0..x {
Dec 11 20:58:33.636 INFO [stderr]    |                 ^ help: consider using `_j` instead
Dec 11 20:58:33.636 INFO [stderr] 
Dec 11 20:58:33.636 INFO [stderr] warning: unused variable: `count`
Dec 11 20:58:33.636 INFO [stderr]    --> src/main.rs:108:36
Dec 11 20:58:33.636 INFO [stderr]     |
Dec 11 20:58:33.636 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Dec 11 20:58:33.636 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Dec 11 20:58:33.636 INFO [stderr] 
Dec 11 20:58:33.652 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:58:33.652 INFO [stderr]   --> src/main.rs:30:9
Dec 11 20:58:33.652 INFO [stderr]    |
Dec 11 20:58:33.652 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Dec 11 20:58:33.652 INFO [stderr]    |         ----^^^^^
Dec 11 20:58:33.652 INFO [stderr]    |         |
Dec 11 20:58:33.652 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:58:33.652 INFO [stderr]    |
Dec 11 20:58:33.652 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 20:58:33.652 INFO [stderr] 
Dec 11 20:58:33.760 INFO [stderr] warning: unused import: `std::io`
Dec 11 20:58:33.760 INFO [stderr]  --> src/main.rs:1:5
Dec 11 20:58:33.760 INFO [stderr]   |
Dec 11 20:58:33.760 INFO [stderr] 1 | use std::io;
Dec 11 20:58:33.760 INFO [stderr]   |     ^^^^^^^
Dec 11 20:58:33.760 INFO [stderr]   |
Dec 11 20:58:33.760 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 20:58:33.760 INFO [stderr] 
Dec 11 20:58:33.896 INFO [stderr] warning: unused variable: `stdin`
Dec 11 20:58:33.896 INFO [stderr]    --> src/main.rs:183:9
Dec 11 20:58:33.896 INFO [stderr]     |
Dec 11 20:58:33.896 INFO [stderr] 183 |     let stdin = std::io::stdin();
Dec 11 20:58:33.896 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Dec 11 20:58:33.896 INFO [stderr]     |
Dec 11 20:58:33.896 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 11 20:58:33.896 INFO [stderr] 
Dec 11 20:58:33.896 INFO [stderr] warning: unused variable: `i`
Dec 11 20:58:33.896 INFO [stderr]   --> src/main.rs:56:13
Dec 11 20:58:33.896 INFO [stderr]    |
Dec 11 20:58:33.896 INFO [stderr] 56 |         for i in 0..y {
Dec 11 20:58:33.896 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 11 20:58:33.896 INFO [stderr] 
Dec 11 20:58:33.896 INFO [stderr] warning: unused variable: `j`
Dec 11 20:58:33.896 INFO [stderr]   --> src/main.rs:58:17
Dec 11 20:58:33.896 INFO [stderr]    |
Dec 11 20:58:33.896 INFO [stderr] 58 |             for j in 0..x {
Dec 11 20:58:33.896 INFO [stderr]    |                 ^ help: consider using `_j` instead
Dec 11 20:58:33.896 INFO [stderr] 
Dec 11 20:58:33.896 INFO [stderr] warning: unused variable: `count`
Dec 11 20:58:33.896 INFO [stderr]    --> src/main.rs:108:36
Dec 11 20:58:33.896 INFO [stderr]     |
Dec 11 20:58:33.896 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Dec 11 20:58:33.896 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Dec 11 20:58:33.896 INFO [stderr] 
Dec 11 20:58:33.896 INFO [stderr] warning: variable does not need to be mutable
Dec 11 20:58:33.896 INFO [stderr]   --> src/main.rs:30:9
Dec 11 20:58:33.896 INFO [stderr]    |
Dec 11 20:58:33.896 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Dec 11 20:58:33.896 INFO [stderr]    |         ----^^^^^
Dec 11 20:58:33.896 INFO [stderr]    |         |
Dec 11 20:58:33.896 INFO [stderr]    |         help: remove this `mut`
Dec 11 20:58:33.896 INFO [stderr]    |
Dec 11 20:58:33.896 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 11 20:58:33.896 INFO [stderr] 
Dec 11 20:58:33.972 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.40s
Dec 11 20:58:33.977 INFO [stderr] su: No module specific data is present
Dec 11 20:58:34.702 INFO running `"docker" "inspect" "76b8dcb9fbd5dc87485be468461f121ac8504b2acfe0ba541523ac92ac0b6bd4"`
Dec 11 20:58:35.060 INFO running `"docker" "rm" "-f" "76b8dcb9fbd5dc87485be468461f121ac8504b2acfe0ba541523ac92ac0b6bd4"`
Dec 11 20:58:35.460 INFO [stdout] 76b8dcb9fbd5dc87485be468461f121ac8504b2acfe0ba541523ac92ac0b6bd4