[INFO] updating cached repository schulke-214/connect-four
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/schulke-214/connect-four
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/schulke-214/connect-four" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/schulke-214/connect-four"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/schulke-214/connect-four'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/schulke-214/connect-four" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/schulke-214/connect-four"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/schulke-214/connect-four'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d4e1db5082c62fd5aeeba6f4a60fdd41e3a4f50b
[INFO] sha for GitHub repo schulke-214/connect-four: d4e1db5082c62fd5aeeba6f4a60fdd41e3a4f50b
[INFO] validating manifest of schulke-214/connect-four on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of schulke-214/connect-four on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing schulke-214/connect-four
[INFO] finished frobbing schulke-214/connect-four
[INFO] frobbed toml for schulke-214/connect-four written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/schulke-214/connect-four/Cargo.toml
[INFO] started frobbing schulke-214/connect-four
[INFO] finished frobbing schulke-214/connect-four
[INFO] frobbed toml for schulke-214/connect-four written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/schulke-214/connect-four/Cargo.toml
[INFO] crate schulke-214/connect-four already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking schulke-214/connect-four against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-1/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/schulke-214/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e08f3a75ce92041ff61ee3e1f7ee5676193d38ea0b287a38218a75cfb465d3ab
[INFO] running `"docker" "start" "-a" "e08f3a75ce92041ff61ee3e1f7ee5676193d38ea0b287a38218a75cfb465d3ab"`
[INFO] [stderr]     Checking connect-four v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `player_id`
[INFO] [stderr]    --> src/main.rs:182:35
[INFO] [stderr]     |
[INFO] [stderr] 182 |     fn check_if_player_won(&self, player_id: u8) -> bool {
[INFO] [stderr]     |                                   ^^^^^^^^^ help: consider prefixing with an underscore: `_player_id`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `coin`
[INFO] [stderr]    --> src/main.rs:214:25
[INFO] [stderr]     |
[INFO] [stderr] 214 |             if let Some(coin) = &row[x] {
[INFO] [stderr]     |                         ^^^^ help: consider prefixing with an underscore: `_coin`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player_id`
[INFO] [stderr]    --> src/main.rs:182:35
[INFO] [stderr]     |
[INFO] [stderr] 182 |     fn check_if_player_won(&self, player_id: u8) -> bool {
[INFO] [stderr]     |                                   ^^^^^^^^^ help: consider prefixing with an underscore: `_player_id`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `coin`
[INFO] [stderr]    --> src/main.rs:214:25
[INFO] [stderr]     |
[INFO] [stderr] 214 |             if let Some(coin) = &row[x] {
[INFO] [stderr]     |                         ^^^^ help: consider prefixing with an underscore: `_coin`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `"docker" "inspect" "e08f3a75ce92041ff61ee3e1f7ee5676193d38ea0b287a38218a75cfb465d3ab"`
[INFO] running `"docker" "rm" "-f" "e08f3a75ce92041ff61ee3e1f7ee5676193d38ea0b287a38218a75cfb465d3ab"`
[INFO] [stdout] e08f3a75ce92041ff61ee3e1f7ee5676193d38ea0b287a38218a75cfb465d3ab