[INFO] updating cached repository https://github.com/cplotter/conways_in_rust
[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] 17fca2ba0eddeb1ca8914326aa07b5aa1deff89c
[INFO] checking cplotter/conways_in_rust against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcplotter%2Fconways_in_rust" "work/builds/worker-0/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cplotter/conways_in_rust on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/cplotter/conways_in_rust
[INFO] finished tweaking git repo https://github.com/cplotter/conways_in_rust
[INFO] tweaked toml for git repo https://github.com/cplotter/conways_in_rust written to work/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/cplotter/conways_in_rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-0/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" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 93d9c254fdee506c5beb6f6e15f4798ff83a9ff1e1a98d1c00bc2ddc9b9ba15a
[INFO] running `"docker" "start" "-a" "93d9c254fdee506c5beb6f6e15f4798ff83a9ff1e1a98d1c00bc2ddc9b9ba15a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling glutin v0.18.0
[INFO] [stderr]    Compiling gl v0.10.0
[INFO] [stderr]     Checking wayland-sys v0.20.12
[INFO] [stderr]     Checking pistoncore-input v0.21.0
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking wayland-commons v0.20.12
[INFO] [stderr]     Checking wayland-client v0.20.12
[INFO] [stderr]     Checking pistoncore-window v0.32.0
[INFO] [stderr]     Checking wayland-protocols v0.20.12
[INFO] [stderr]     Checking piston-gfx_texture v0.34.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.3.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.37.0
[INFO] [stderr]     Checking winit v0.17.2
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.52.0
[INFO] [stderr]     Checking piston v0.37.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.48.0
[INFO] [stderr]     Checking piston_window v0.81.0
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `next_grid`
[INFO] [stderr]    --> src/main.rs:133:1
[INFO] [stderr]     |
[INFO] [stderr] 133 | fn next_grid(dimension: (i32, i32), grid: &Vec<Vec<bool>>) -> Vec<Vec<bool>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `next_grid`
[INFO] [stderr]    --> src/main.rs:133:1
[INFO] [stderr]     |
[INFO] [stderr] 133 | fn next_grid(dimension: (i32, i32), grid: &Vec<Vec<bool>>) -> Vec<Vec<bool>> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] running `"docker" "inspect" "93d9c254fdee506c5beb6f6e15f4798ff83a9ff1e1a98d1c00bc2ddc9b9ba15a"`
[INFO] running `"docker" "rm" "-f" "93d9c254fdee506c5beb6f6e15f4798ff83a9ff1e1a98d1c00bc2ddc9b9ba15a"`
[INFO] [stdout] 93d9c254fdee506c5beb6f6e15f4798ff83a9ff1e1a98d1c00bc2ddc9b9ba15a