Dec 17 22:17:27.169 INFO checking jimmycuadra/connect_four against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 22:17:27.169 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/jimmycuadra/connect_four:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 22:17:27.678 INFO [stdout] 4827e6664942e855942a57843c054c889c1253617ad85199c9f70dcaa58b1ace
Dec 17 22:17:27.680 INFO running `"docker" "start" "-a" "4827e6664942e855942a57843c054c889c1253617ad85199c9f70dcaa58b1ace"`
Dec 17 22:17:29.951 INFO [stderr]     Checking connect_four v0.0.1 (/opt/crater/workdir)
Dec 17 22:17:30.209 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 17 22:17:30.209 INFO [stderr]    --> src/main.rs:133:20
Dec 17 22:17:30.210 INFO [stderr]     |
Dec 17 22:17:30.210 INFO [stderr] 133 |         for col in (0..self.column_count) {
Dec 17 22:17:30.210 INFO [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 17 22:17:30.211 INFO [stderr]     |
Dec 17 22:17:30.211 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 17 22:17:30.211 INFO [stderr] 
Dec 17 22:17:30.211 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 17 22:17:30.212 INFO [stderr]    --> src/main.rs:163:31
Dec 17 22:17:30.212 INFO [stderr]     |
Dec 17 22:17:30.212 INFO [stderr] 163 |                 for offset in (1..4) {
Dec 17 22:17:30.212 INFO [stderr]     |                               ^^^^^^ help: remove these parentheses
Dec 17 22:17:30.212 INFO [stderr] 
Dec 17 22:17:30.212 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 17 22:17:30.212 INFO [stderr]    --> src/main.rs:194:31
Dec 17 22:17:30.212 INFO [stderr]     |
Dec 17 22:17:30.213 INFO [stderr] 194 |                 for offset in (1..4) {
Dec 17 22:17:30.213 INFO [stderr]     |                               ^^^^^^ help: remove these parentheses
Dec 17 22:17:30.213 INFO [stderr] 
Dec 17 22:17:30.316 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 17 22:17:30.316 INFO [stderr]    --> src/main.rs:133:20
Dec 17 22:17:30.316 INFO [stderr]     |
Dec 17 22:17:30.316 INFO [stderr] 133 |         for col in (0..self.column_count) {
Dec 17 22:17:30.316 INFO [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Dec 17 22:17:30.316 INFO [stderr]     |
Dec 17 22:17:30.316 INFO [stderr]     = note: #[warn(unused_parens)] on by default
Dec 17 22:17:30.316 INFO [stderr] 
Dec 17 22:17:30.316 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 17 22:17:30.316 INFO [stderr]    --> src/main.rs:163:31
Dec 17 22:17:30.316 INFO [stderr]     |
Dec 17 22:17:30.316 INFO [stderr] 163 |                 for offset in (1..4) {
Dec 17 22:17:30.316 INFO [stderr]     |                               ^^^^^^ help: remove these parentheses
Dec 17 22:17:30.316 INFO [stderr] 
Dec 17 22:17:30.316 INFO [stderr] warning: unnecessary parentheses around `for` head expression
Dec 17 22:17:30.316 INFO [stderr]    --> src/main.rs:194:31
Dec 17 22:17:30.316 INFO [stderr]     |
Dec 17 22:17:30.316 INFO [stderr] 194 |                 for offset in (1..4) {
Dec 17 22:17:30.316 INFO [stderr]     |                               ^^^^^^ help: remove these parentheses
Dec 17 22:17:30.317 INFO [stderr] 
Dec 17 22:17:30.535 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
Dec 17 22:17:31.904 INFO running `"docker" "inspect" "4827e6664942e855942a57843c054c889c1253617ad85199c9f70dcaa58b1ace"`
Dec 17 22:17:32.298 INFO running `"docker" "rm" "-f" "4827e6664942e855942a57843c054c889c1253617ad85199c9f70dcaa58b1ace"`
Dec 17 22:17:32.679 INFO [stdout] 4827e6664942e855942a57843c054c889c1253617ad85199c9f70dcaa58b1ace