[INFO] updating cached repository https://github.com/gameboyprinter/rustchess
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] b3a4f58a10086e9a6112fcaede4f5b67ccf10d55
[INFO] checking gameboyprinter/rustchess against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgameboyprinter%2Frustchess" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gameboyprinter/rustchess on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/gameboyprinter/rustchess
[INFO] finished tweaking git repo https://github.com/gameboyprinter/rustchess
[INFO] tweaked toml for git repo https://github.com/gameboyprinter/rustchess written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/gameboyprinter/rustchess already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e957909d39a4256f82cf617dcdfd911351de7423876090f3fd6a883ca2bf15b5
[INFO] running `"docker" "start" "-a" "e957909d39a4256f82cf617dcdfd911351de7423876090f3fd6a883ca2bf15b5"`
[INFO] [stderr]     Checking rustchess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variant is never constructed: `Black`
[INFO] [stderr]   --> src/board.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     Black
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MAILBOX`
[INFO] [stderr]   --> src/board.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | / const MAILBOX: [i8; 120] = [
[INFO] [stderr] 41 | |      -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
[INFO] [stderr] 42 | |      -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
[INFO] [stderr] 43 | |      -1,  0,  1,  2,  3,  4,  5,  6,  7, -1,
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |      -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
[INFO] [stderr] 53 | | ];
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MAILBOX64`
[INFO] [stderr]   --> src/board.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | / const MAILBOX64: [u8; 64] = [
[INFO] [stderr] 56 | |     21, 22, 23, 24, 25, 26, 27, 28,
[INFO] [stderr] 57 | |     31, 32, 33, 34, 35, 36, 37, 38,
[INFO] [stderr] 58 | |     41, 42, 43, 44, 45, 46, 47, 48,
[INFO] [stderr] ...  |
[INFO] [stderr] 63 | |     91, 92, 93, 94, 95, 96, 97, 98
[INFO] [stderr] 64 | | ];
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Black`
[INFO] [stderr]   --> src/board.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     Black
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MAILBOX`
[INFO] [stderr]   --> src/board.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | / const MAILBOX: [i8; 120] = [
[INFO] [stderr] 41 | |      -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
[INFO] [stderr] 42 | |      -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
[INFO] [stderr] 43 | |      -1,  0,  1,  2,  3,  4,  5,  6,  7, -1,
[INFO] [stderr] ...  |
[INFO] [stderr] 52 | |      -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
[INFO] [stderr] 53 | | ];
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MAILBOX64`
[INFO] [stderr]   --> src/board.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | / const MAILBOX64: [u8; 64] = [
[INFO] [stderr] 56 | |     21, 22, 23, 24, 25, 26, 27, 28,
[INFO] [stderr] 57 | |     31, 32, 33, 34, 35, 36, 37, 38,
[INFO] [stderr] 58 | |     41, 42, 43, 44, 45, 46, 47, 48,
[INFO] [stderr] ...  |
[INFO] [stderr] 63 | |     91, 92, 93, 94, 95, 96, 97, 98
[INFO] [stderr] 64 | | ];
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `"docker" "inspect" "e957909d39a4256f82cf617dcdfd911351de7423876090f3fd6a883ca2bf15b5"`
[INFO] running `"docker" "rm" "-f" "e957909d39a4256f82cf617dcdfd911351de7423876090f3fd6a883ca2bf15b5"`
[INFO] [stdout] e957909d39a4256f82cf617dcdfd911351de7423876090f3fd6a883ca2bf15b5