[INFO] updating cached repository SpycWolf/rust-life_game
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SpycWolf/rust-life_game
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SpycWolf/rust-life_game" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/SpycWolf/rust-life_game"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/SpycWolf/rust-life_game'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SpycWolf/rust-life_game" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/SpycWolf/rust-life_game"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/SpycWolf/rust-life_game'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 25bcb2456a1f07ee7e1a515468382bb2015f51f8
[INFO] sha for GitHub repo SpycWolf/rust-life_game: 25bcb2456a1f07ee7e1a515468382bb2015f51f8
[INFO] validating manifest of SpycWolf/rust-life_game on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of SpycWolf/rust-life_game on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing SpycWolf/rust-life_game
[INFO] finished frobbing SpycWolf/rust-life_game
[INFO] frobbed toml for SpycWolf/rust-life_game written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/SpycWolf/rust-life_game/Cargo.toml
[INFO] started frobbing SpycWolf/rust-life_game
[INFO] finished frobbing SpycWolf/rust-life_game
[INFO] frobbed toml for SpycWolf/rust-life_game written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/SpycWolf/rust-life_game/Cargo.toml
[INFO] crate SpycWolf/rust-life_game already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking SpycWolf/rust-life_game against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-3/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/SpycWolf/rust-life_game:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ce8ebe96e85087ecdaa7baf8ce7a53409758549c3964401db7ce40f853be376e
[INFO] running `"docker" "start" "-a" "ce8ebe96e85087ecdaa7baf8ce7a53409758549c3964401db7ce40f853be376e"`
[INFO] [stderr]     Checking rustlife v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:16:18
[INFO] [stderr]    |
[INFO] [stderr] 16 |         for _ in (0..(w*h)) {
[INFO] [stderr]    |                  ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:27:20
[INFO] [stderr]    |
[INFO] [stderr] 27 |         for idx in (0..(self.width * self.height)) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |         for idx in (0..(self.width * self.height)) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:95:14
[INFO] [stderr]    |
[INFO] [stderr] 95 |     for _ in (0..100) {
[INFO] [stderr]    |              ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:16:18
[INFO] [stderr]    |
[INFO] [stderr] 16 |         for _ in (0..(w*h)) {
[INFO] [stderr]    |                  ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:27:20
[INFO] [stderr]    |
[INFO] [stderr] 27 |         for idx in (0..(self.width * self.height)) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:79:20
[INFO] [stderr]    |
[INFO] [stderr] 79 |         for idx in (0..(self.width * self.height)) {
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:95:14
[INFO] [stderr]    |
[INFO] [stderr] 95 |     for _ in (0..100) {
[INFO] [stderr]    |              ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "ce8ebe96e85087ecdaa7baf8ce7a53409758549c3964401db7ce40f853be376e"`
[INFO] running `"docker" "rm" "-f" "ce8ebe96e85087ecdaa7baf8ce7a53409758549c3964401db7ce40f853be376e"`
[INFO] [stdout] ce8ebe96e85087ecdaa7baf8ce7a53409758549c3964401db7ce40f853be376e