Nov 28 07:53:07.933 INFO checking chc4/minesweeper against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 07:53:07.935 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 28 07:53:08.584 INFO [stdout] f8ae11d52898d9b50e64086c87bf6a7ff6d2935d2f6c191015129210a8cb5fb3
Nov 28 07:53:08.590 INFO running `"docker" "start" "-a" "f8ae11d52898d9b50e64086c87bf6a7ff6d2935d2f6c191015129210a8cb5fb3"`
Nov 28 07:53:09.999 INFO [stderr] usermod: no changes
Nov 28 07:53:10.080 INFO [stderr]     Checking minesweeper v0.1.0 (/source)
Nov 28 07:53:10.832 INFO [stderr] warning: unused import: `std::io`
Nov 28 07:53:10.832 INFO [stderr]  --> src/main.rs:1:5
Nov 28 07:53:10.833 INFO [stderr]   |
Nov 28 07:53:10.833 INFO [stderr] 1 | use std::io;
Nov 28 07:53:10.833 INFO [stderr]   |     ^^^^^^^
Nov 28 07:53:10.833 INFO [stderr]   |
Nov 28 07:53:10.833 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 07:53:10.833 INFO [stderr] 
Nov 28 07:53:10.968 INFO [stderr] warning: unused variable: `stdin`
Nov 28 07:53:10.968 INFO [stderr]    --> src/main.rs:183:9
Nov 28 07:53:10.968 INFO [stderr]     |
Nov 28 07:53:10.968 INFO [stderr] 183 |     let stdin = std::io::stdin();
Nov 28 07:53:10.968 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Nov 28 07:53:10.968 INFO [stderr]     |
Nov 28 07:53:10.968 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 28 07:53:10.968 INFO [stderr] 
Nov 28 07:53:10.968 INFO [stderr] warning: unused variable: `i`
Nov 28 07:53:10.968 INFO [stderr]   --> src/main.rs:56:13
Nov 28 07:53:10.968 INFO [stderr]    |
Nov 28 07:53:10.968 INFO [stderr] 56 |         for i in 0..y {
Nov 28 07:53:10.969 INFO [stderr]    |             ^ help: consider using `_i` instead
Nov 28 07:53:10.969 INFO [stderr] 
Nov 28 07:53:10.969 INFO [stderr] warning: unused variable: `j`
Nov 28 07:53:10.969 INFO [stderr]   --> src/main.rs:58:17
Nov 28 07:53:10.969 INFO [stderr]    |
Nov 28 07:53:10.969 INFO [stderr] 58 |             for j in 0..x {
Nov 28 07:53:10.969 INFO [stderr]    |                 ^ help: consider using `_j` instead
Nov 28 07:53:10.969 INFO [stderr] 
Nov 28 07:53:10.969 INFO [stderr] warning: unused variable: `count`
Nov 28 07:53:10.969 INFO [stderr]    --> src/main.rs:108:36
Nov 28 07:53:10.969 INFO [stderr]     |
Nov 28 07:53:10.969 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Nov 28 07:53:10.969 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Nov 28 07:53:10.969 INFO [stderr] 
Nov 28 07:53:10.976 INFO [stderr] warning: variable does not need to be mutable
Nov 28 07:53:10.976 INFO [stderr]   --> src/main.rs:30:9
Nov 28 07:53:10.976 INFO [stderr]    |
Nov 28 07:53:10.976 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Nov 28 07:53:10.977 INFO [stderr]    |         ----^^^^^
Nov 28 07:53:10.977 INFO [stderr]    |         |
Nov 28 07:53:10.977 INFO [stderr]    |         help: remove this `mut`
Nov 28 07:53:10.977 INFO [stderr]    |
Nov 28 07:53:10.977 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 07:53:10.977 INFO [stderr] 
Nov 28 07:53:11.037 INFO [stderr] warning: unused import: `std::io`
Nov 28 07:53:11.037 INFO [stderr]  --> src/main.rs:1:5
Nov 28 07:53:11.037 INFO [stderr]   |
Nov 28 07:53:11.038 INFO [stderr] 1 | use std::io;
Nov 28 07:53:11.038 INFO [stderr]   |     ^^^^^^^
Nov 28 07:53:11.038 INFO [stderr]   |
Nov 28 07:53:11.039 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 28 07:53:11.039 INFO [stderr] 
Nov 28 07:53:11.157 INFO [stderr] warning: unused variable: `stdin`
Nov 28 07:53:11.157 INFO [stderr]    --> src/main.rs:183:9
Nov 28 07:53:11.157 INFO [stderr]     |
Nov 28 07:53:11.158 INFO [stderr] 183 |     let stdin = std::io::stdin();
Nov 28 07:53:11.158 INFO [stderr]     |         ^^^^^ help: consider using `_stdin` instead
Nov 28 07:53:11.158 INFO [stderr]     |
Nov 28 07:53:11.158 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Nov 28 07:53:11.159 INFO [stderr] 
Nov 28 07:53:11.159 INFO [stderr] warning: unused variable: `i`
Nov 28 07:53:11.159 INFO [stderr]   --> src/main.rs:56:13
Nov 28 07:53:11.159 INFO [stderr]    |
Nov 28 07:53:11.160 INFO [stderr] 56 |         for i in 0..y {
Nov 28 07:53:11.164 INFO [stderr]    |             ^ help: consider using `_i` instead
Nov 28 07:53:11.165 INFO [stderr] 
Nov 28 07:53:11.165 INFO [stderr] warning: unused variable: `j`
Nov 28 07:53:11.165 INFO [stderr]   --> src/main.rs:58:17
Nov 28 07:53:11.165 INFO [stderr]    |
Nov 28 07:53:11.166 INFO [stderr] 58 |             for j in 0..x {
Nov 28 07:53:11.166 INFO [stderr]    |                 ^ help: consider using `_j` instead
Nov 28 07:53:11.166 INFO [stderr] 
Nov 28 07:53:11.167 INFO [stderr] warning: unused variable: `count`
Nov 28 07:53:11.167 INFO [stderr]    --> src/main.rs:108:36
Nov 28 07:53:11.167 INFO [stderr]     |
Nov 28 07:53:11.168 INFO [stderr] 108 |         if let Slot::Empty(visible,count) = slot {
Nov 28 07:53:11.168 INFO [stderr]     |                                    ^^^^^ help: consider using `_count` instead
Nov 28 07:53:11.168 INFO [stderr] 
Nov 28 07:53:11.168 INFO [stderr] warning: variable does not need to be mutable
Nov 28 07:53:11.169 INFO [stderr]   --> src/main.rs:30:9
Nov 28 07:53:11.169 INFO [stderr]    |
Nov 28 07:53:11.169 INFO [stderr] 30 |     let mut stdin = std::io::stdin();
Nov 28 07:53:11.169 INFO [stderr]    |         ----^^^^^
Nov 28 07:53:11.170 INFO [stderr]    |         |
Nov 28 07:53:11.170 INFO [stderr]    |         help: remove this `mut`
Nov 28 07:53:11.170 INFO [stderr]    |
Nov 28 07:53:11.170 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 07:53:11.170 INFO [stderr] 
Nov 28 07:53:11.216 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.20s
Nov 28 07:53:11.216 INFO [stderr] su: No module specific data is present
Nov 28 07:53:11.814 INFO running `"docker" "inspect" "f8ae11d52898d9b50e64086c87bf6a7ff6d2935d2f6c191015129210a8cb5fb3"`
Nov 28 07:53:12.190 INFO running `"docker" "rm" "-f" "f8ae11d52898d9b50e64086c87bf6a7ff6d2935d2f6c191015129210a8cb5fb3"`
Nov 28 07:53:12.475 INFO [stdout] f8ae11d52898d9b50e64086c87bf6a7ff6d2935d2f6c191015129210a8cb5fb3