Dec 04 21:03:46.576 INFO checking chc4/minesweeper against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 21:03:46.576 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-1/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 04 21:03:47.164 INFO [stdout] fc588288f434b639a3e86713dfd3eb613d5999a3fda139310045168f39c1ad66
Dec 04 21:03:47.166 INFO running `"docker" "start" "-a" "fc588288f434b639a3e86713dfd3eb613d5999a3fda139310045168f39c1ad66"`
Dec 04 21:03:49.110 INFO [stderr] usermod: no changes
Dec 04 21:03:49.239 INFO [stderr]     Checking minesweeper v0.1.0 (/source)
Dec 04 21:03:50.343 INFO [stderr] warning: unused import: `std::io`
Dec 04 21:03:50.343 INFO [stderr]  --> src/main.rs:1:5
Dec 04 21:03:50.343 INFO [stderr]   |
Dec 04 21:03:50.343 INFO [stderr] 1 | use std::io;
Dec 04 21:03:50.343 INFO [stderr]   |     ^^^^^^^
Dec 04 21:03:50.343 INFO [stderr]   |
Dec 04 21:03:50.343 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:03:50.343 INFO [stderr] 
Dec 04 21:03:50.423 INFO [stderr] warning: unused import: `std::io`
Dec 04 21:03:50.423 INFO [stderr]  --> src/main.rs:1:5
Dec 04 21:03:50.423 INFO [stderr]   |
Dec 04 21:03:50.424 INFO [stderr] 1 | use std::io;
Dec 04 21:03:50.424 INFO [stderr]   |     ^^^^^^^
Dec 04 21:03:50.431 INFO [stderr]   |
Dec 04 21:03:50.431 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 21:03:50.431 INFO [stderr] 
Dec 04 21:03:50.537 INFO [stderr] warning: unused variable: `stdin`
Dec 04 21:03:50.537 INFO [stderr]    --> src/main.rs:183:9
Dec 04 21:03:50.537 INFO [stderr]     |
Dec 04 21:03:50.537 INFO [stderr] 183 |     let stdin = std::io::stdin();
Dec 04 21:03:50.537 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Dec 04 21:03:50.537 INFO [stderr]     |
Dec 04 21:03:50.537 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 21:03:50.537 INFO [stderr] 
Dec 04 21:03:50.537 INFO [stderr] warning: unused variable: `i`
Dec 04 21:03:50.537 INFO [stderr]   --> src/main.rs:56:13
Dec 04 21:03:50.537 INFO [stderr]    |
Dec 04 21:03:50.537 INFO [stderr] 56 |         for i in 0..y {
Dec 04 21:03:50.537 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 04 21:03:50.537 INFO [stderr] 
Dec 04 21:03:50.537 INFO [stderr] warning: unused variable: `j`
Dec 04 21:03:50.537 INFO [stderr]   --> src/main.rs:58:17
Dec 04 21:03:50.537 INFO [stderr]    |
Dec 04 21:03:50.537 INFO [stderr] 58 |             for j in 0..x {
Dec 04 21:03:50.537 INFO [stderr]    |                 ^ help: consider using `_j` instead
Dec 04 21:03:50.537 INFO [stderr] 
Dec 04 21:03:50.537 INFO [stderr] warning: unused variable: `count`
Dec 04 21:03:50.537 INFO [stderr]    --> src/main.rs:108:36
Dec 04 21:03:50.537 INFO [stderr]     |
Dec 04 21:03:50.537 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Dec 04 21:03:50.537 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Dec 04 21:03:50.537 INFO [stderr] 
Dec 04 21:03:50.551 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:03:50.551 INFO [stderr]   --> src/main.rs:30:9
Dec 04 21:03:50.551 INFO [stderr]    |
Dec 04 21:03:50.551 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Dec 04 21:03:50.551 INFO [stderr]    |         ----^^^^^
Dec 04 21:03:50.551 INFO [stderr]    |         |
Dec 04 21:03:50.551 INFO [stderr]    |         help: remove this `mut`
Dec 04 21:03:50.551 INFO [stderr]    |
Dec 04 21:03:50.551 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 21:03:50.551 INFO [stderr] 
Dec 04 21:03:50.555 INFO [stderr] warning: unused variable: `stdin`
Dec 04 21:03:50.555 INFO [stderr]    --> src/main.rs:183:9
Dec 04 21:03:50.555 INFO [stderr]     |
Dec 04 21:03:50.555 INFO [stderr] 183 |     let stdin = std::io::stdin();
Dec 04 21:03:50.555 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Dec 04 21:03:50.555 INFO [stderr]     |
Dec 04 21:03:50.555 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 04 21:03:50.555 INFO [stderr] 
Dec 04 21:03:50.555 INFO [stderr] warning: unused variable: `i`
Dec 04 21:03:50.555 INFO [stderr]   --> src/main.rs:56:13
Dec 04 21:03:50.555 INFO [stderr]    |
Dec 04 21:03:50.555 INFO [stderr] 56 |         for i in 0..y {
Dec 04 21:03:50.555 INFO [stderr]    |             ^ help: consider using `_i` instead
Dec 04 21:03:50.555 INFO [stderr] 
Dec 04 21:03:50.555 INFO [stderr] warning: unused variable: `j`
Dec 04 21:03:50.555 INFO [stderr]   --> src/main.rs:58:17
Dec 04 21:03:50.555 INFO [stderr]    |
Dec 04 21:03:50.555 INFO [stderr] 58 |             for j in 0..x {
Dec 04 21:03:50.555 INFO [stderr]    |                 ^ help: consider using `_j` instead
Dec 04 21:03:50.555 INFO [stderr] 
Dec 04 21:03:50.556 INFO [stderr] warning: unused variable: `count`
Dec 04 21:03:50.556 INFO [stderr]    --> src/main.rs:108:36
Dec 04 21:03:50.556 INFO [stderr]     |
Dec 04 21:03:50.556 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Dec 04 21:03:50.556 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Dec 04 21:03:50.556 INFO [stderr] 
Dec 04 21:03:50.562 INFO [stderr] warning: variable does not need to be mutable
Dec 04 21:03:50.562 INFO [stderr]   --> src/main.rs:30:9
Dec 04 21:03:50.562 INFO [stderr]    |
Dec 04 21:03:50.562 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Dec 04 21:03:50.562 INFO [stderr]    |         ----^^^^^
Dec 04 21:03:50.562 INFO [stderr]    |         |
Dec 04 21:03:50.571 INFO [stderr]    |         help: remove this `mut`
Dec 04 21:03:50.571 INFO [stderr]    |
Dec 04 21:03:50.571 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 04 21:03:50.571 INFO [stderr] 
Dec 04 21:03:50.687 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.54s
Dec 04 21:03:50.687 INFO [stderr] su: No module specific data is present
Dec 04 21:03:52.131 INFO running `"docker" "inspect" "fc588288f434b639a3e86713dfd3eb613d5999a3fda139310045168f39c1ad66"`
Dec 04 21:03:52.474 INFO running `"docker" "rm" "-f" "fc588288f434b639a3e86713dfd3eb613d5999a3fda139310045168f39c1ad66"`
Dec 04 21:03:52.788 INFO [stdout] fc588288f434b639a3e86713dfd3eb613d5999a3fda139310045168f39c1ad66