[INFO] updating cached repository https://github.com/Baelyk/minesweeper
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 93510b63b0e80f5df69cd76046a28ddc6e198fb2
[INFO] checking Baelyk/minesweeper against try#b19afc12c4f781e95f168f2fdea339c972f14ae2 for pr-64327
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FBaelyk%2Fminesweeper" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Baelyk/minesweeper on toolchain b19afc12c4f781e95f168f2fdea339c972f14ae2-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Baelyk/minesweeper
[INFO] finished tweaking git repo https://github.com/Baelyk/minesweeper
[INFO] tweaked toml for git repo https://github.com/Baelyk/minesweeper written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Baelyk/minesweeper already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+b19afc12c4f781e95f168f2fdea339c972f14ae2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9b3e5b55e79639f2ef5a0bec9a8b53c334bc79d6a61f0cbbf6696c2b4a282519
[INFO] running `"docker" "start" "-a" "9b3e5b55e79639f2ef5a0bec9a8b53c334bc79d6a61f0cbbf6696c2b4a282519"`
[INFO] [stderr]    Compiling bitflags v1.0.2
[INFO] [stderr]     Checking piston2d-graphics v0.21.1
[INFO] [stderr]     Checking piston2d-graphics v0.26.0
[INFO] [stderr]    Compiling syn v0.13.3
[INFO] [stderr]    Compiling gl_generator v0.5.5
[INFO] [stderr]     Checking png v0.9.0
[INFO] [stderr]     Checking gfx_core v0.7.2
[INFO] [stderr]     Checking wayland-window v0.7.0
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]     Checking winit v0.7.6
[INFO] [stderr]     Checking image v0.15.0
[INFO] [stderr]    Compiling gl_generator v0.6.1
[INFO] [stderr]    Compiling gl_generator v0.7.0
[INFO] [stderr]    Compiling glutin v0.9.2
[INFO] [stderr]    Compiling serde_derive_internals v0.23.1
[INFO] [stderr]    Compiling gfx_gl v0.4.0
[INFO] [stderr]    Compiling gl v0.6.5
[INFO] [stderr]    Compiling serde_derive v1.0.43
[INFO] [stderr]     Checking pistoncore-input v0.19.0
[INFO] [stderr]     Checking pistoncore-window v0.28.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.33.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.39.1
[INFO] [stderr]     Checking piston v0.33.0
[INFO] [stderr]     Checking gfx v0.16.3
[INFO] [stderr]     Checking gfx_device_gl v0.14.6
[INFO] [stderr]     Checking piston-gfx_texture v0.26.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.43.0
[INFO] [stderr]     Checking piston_window v0.70.0
[INFO] [stderr]     Checking minesweeper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let mut update = true;
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let mut update = true;
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 52s
[INFO] running `"docker" "inspect" "9b3e5b55e79639f2ef5a0bec9a8b53c334bc79d6a61f0cbbf6696c2b4a282519"`
[INFO] running `"docker" "rm" "-f" "9b3e5b55e79639f2ef5a0bec9a8b53c334bc79d6a61f0cbbf6696c2b4a282519"`
[INFO] [stdout] 9b3e5b55e79639f2ef5a0bec9a8b53c334bc79d6a61f0cbbf6696c2b4a282519