[INFO] cloning repository https://github.com/KermitPurple/RustChess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KermitPurple/RustChess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKermitPurple%2FRustChess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKermitPurple%2FRustChess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13e040e57696ae828851e311560592d5be43309f
[INFO] checking KermitPurple/RustChess/13e040e57696ae828851e311560592d5be43309f against master#9bfa31f632912180dc742809bcc51a97f2d7079d for pr-140151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKermitPurple%2FRustChess" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KermitPurple/RustChess on toolchain 9bfa31f632912180dc742809bcc51a97f2d7079d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/KermitPurple/RustChess
[INFO] finished tweaking git repo https://github.com/KermitPurple/RustChess
[INFO] tweaked toml for git repo https://github.com/KermitPurple/RustChess written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/KermitPurple/RustChess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.22
[INFO] [stderr]   Downloaded minimp3 v0.3.5
[INFO] [stderr]   Downloaded coreaudio-sys v0.2.8
[INFO] [stderr]   Downloaded wayland-sys v0.21.13
[INFO] [stderr]   Downloaded gfx_gl v0.6.1
[INFO] [stderr]   Downloaded stdweb-derive v0.5.3
[INFO] [stderr]   Downloaded gfx_window_glutin v0.30.0
[INFO] [stderr]   Downloaded stdweb-internal-runtime v0.1.5
[INFO] [stderr]   Downloaded shlex v0.1.1
[INFO] [stderr]   Downloaded thiserror-impl v1.0.22
[INFO] [stderr]   Downloaded mint v0.5.6
[INFO] [stderr]   Downloaded glutin_glx_sys v0.1.7
[INFO] [stderr]   Downloaded glutin_wgl_sys v0.1.5
[INFO] [stderr]   Downloaded bytecount v0.6.2
[INFO] [stderr]   Downloaded stdweb-internal-macros v0.2.9
[INFO] [stderr]   Downloaded alsa-sys v0.1.2
[INFO] [stderr]   Downloaded lyon v0.13.5
[INFO] [stderr]   Downloaded num-iter v0.1.42
[INFO] [stderr]   Downloaded rusty-xinput v1.2.0
[INFO] [stderr]   Downloaded glutin_gles2_sys v0.1.5
[INFO] [stderr]   Downloaded dirs-sys v0.3.5
[INFO] [stderr]   Downloaded draw_state v0.8.0
[INFO] [stderr]   Downloaded directories v2.0.2
[INFO] [stderr]   Downloaded tiff v0.3.1
[INFO] [stderr]   Downloaded wayland-commons v0.21.13
[INFO] [stderr]   Downloaded alga v0.9.3
[INFO] [stderr]   Downloaded cexpr v0.4.0
[INFO] [stderr]   Downloaded clang-sys v1.0.3
[INFO] [stderr]   Downloaded mach v0.2.3
[INFO] [stderr]   Downloaded io-kit-sys v0.1.0
[INFO] [stderr]   Downloaded gfx_core v0.9.2
[INFO] [stderr]   Downloaded getrandom v0.1.15
[INFO] [stderr]   Downloaded gfx_device_gl v0.16.2
[INFO] [stderr]   Downloaded uuid v0.8.1
[INFO] [stderr]   Downloaded cpal v0.8.2
[INFO] [stderr]   Downloaded png v0.15.3
[INFO] [stderr]   Downloaded gilrs-core v0.2.6
[INFO] [stderr]   Downloaded lyon_geom v0.12.7
[INFO] [stderr]   Downloaded gfx v0.18.2
[INFO] [stderr]   Downloaded minimp3-sys v0.3.2
[INFO] [stderr]   Downloaded glutin v0.20.1
[INFO] [stderr]   Downloaded glutin_egl_sys v0.1.5
[INFO] [stderr]   Downloaded backtrace v0.3.55
[INFO] [stderr]   Downloaded lyon_path v0.13.2
[INFO] [stderr]   Downloaded bzip2 v0.3.3
[INFO] [stderr]   Downloaded zip v0.5.9
[INFO] [stderr]   Downloaded claxon v0.4.3
[INFO] [stderr]   Downloaded stdweb v0.1.3
[INFO] [stderr]   Downloaded wayland-protocols v0.21.13
[INFO] [stderr]   Downloaded deflate v0.7.20
[INFO] [stderr]   Downloaded serde_json v1.0.60
[INFO] [stderr]   Downloaded nom v5.1.2
[INFO] [stderr]   Downloaded lyon_tessellation v0.13.5
[INFO] [stderr]   Downloaded image v0.22.5
[INFO] [stderr]   Downloaded nix v0.15.0
[INFO] [stderr]   Downloaded stdweb v0.4.20
[INFO] [stderr]   Downloaded bindgen v0.56.0
[INFO] [stderr]   Downloaded regex v1.4.2
[INFO] [stderr]   Downloaded jpeg-decoder v0.1.20
[INFO] [stderr]   Downloaded gilrs v0.7.4
[INFO] [stderr]   Downloaded regex-syntax v0.6.21
[INFO] [stderr]   Downloaded nalgebra v0.18.1
[INFO] [stderr]   Downloaded object v0.22.0
[INFO] [stderr]   Downloaded winit v0.19.5
[INFO] [stderr]   Downloaded pulldown-cmark v0.2.0
[INFO] [stderr]   Downloaded smithay-client-toolkit v0.4.6
[INFO] [stderr]   Downloaded cocoa v0.18.5
[INFO] [stderr]   Downloaded wayland-client v0.21.13
[INFO] [stderr]   Downloaded miniz_oxide v0.4.3
[INFO] [stderr]   Downloaded slice-deque v0.3.0
[INFO] [stderr]   Downloaded toml v0.5.7
[INFO] [stderr]   Downloaded gleam v0.6.19
[INFO] [stderr]   Downloaded glyph_brush v0.5.4
[INFO] [stderr]   Downloaded lyon_algorithms v0.13.4
[INFO] [stderr]   Downloaded libc v0.2.81
[INFO] [stderr]   Downloaded coreaudio-rs v0.9.1
[INFO] [stderr]   Downloaded gif v0.10.3
[INFO] [stderr]   Downloaded libudev-sys v0.1.4
[INFO] [stderr]   Downloaded bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]   Downloaded matrixmultiply v0.2.4
[INFO] [stderr]   Downloaded num-complex v0.2.4
[INFO] [stderr]   Downloaded addr2line v0.14.0
[INFO] [stderr]   Downloaded rustc-demangle v0.1.18
[INFO] [stderr]   Downloaded gl_generator v0.13.1
[INFO] [stderr]   Downloaded gimli v0.23.0
[INFO] [stderr]   Downloaded smart-default v0.5.2
[INFO] [stderr]   Downloaded wayland-scanner v0.21.13
[INFO] [stderr]   Downloaded autocfg v0.1.7
[INFO] [stderr]   Downloaded cargo_metadata v0.10.0
[INFO] [stderr]   Downloaded skeptic v0.13.5
[INFO] [stderr]   Downloaded sid v0.5.2
[INFO] [stderr]   Downloaded ggez v0.5.1
[INFO] [stderr]   Downloaded rodio v0.9.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad6bac349925d77265a4f6f2bb1501154342e1f05edf299ee4d60477e5df51c9
[INFO] running `Command { std: "docker" "start" "-a" "ad6bac349925d77265a4f6f2bb1501154342e1f05edf299ee4d60477e5df51c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad6bac349925d77265a4f6f2bb1501154342e1f05edf299ee4d60477e5df51c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6bac349925d77265a4f6f2bb1501154342e1f05edf299ee4d60477e5df51c9", kill_on_drop: false }`
[INFO] [stdout] ad6bac349925d77265a4f6f2bb1501154342e1f05edf299ee4d60477e5df51c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+9bfa31f632912180dc742809bcc51a97f2d7079d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8cafba2d6ce1869ccf449ee2e9db6ca104ff773152817a3fb26e327f30f08b96
[INFO] running `Command { std: "docker" "start" "-a" "8cafba2d6ce1869ccf449ee2e9db6ca104ff773152817a3fb26e327f30f08b96", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking libloading v0.6.6
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking dlib v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking wayland-sys v0.21.13
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling x11-dl v2.18.5
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking xdg v2.2.0
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling pulldown-cmark v0.2.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking line_drawing v0.7.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]    Compiling minimp3-sys v0.3.2
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]    Compiling bzip2-sys v0.1.9+1.0.8
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling gfx_gl v0.6.1
[INFO] [stderr]    Compiling glutin_egl_sys v0.1.5
[INFO] [stderr]    Compiling glutin_glx_sys v0.1.7
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking draw_state v0.8.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking rusttype v0.7.9
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]     Checking andrew v0.2.1
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling remove_dir_all v0.5.3
[INFO] [stderr]     Checking gfx_core v0.9.2
[INFO] [stderr]    Compiling wayland-client v0.21.13
[INFO] [stderr]    Compiling wayland-protocols v0.21.13
[INFO] [stderr]     Checking sid v0.5.2
[INFO] [stderr]     Checking raw-window-handle v0.3.3
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking shared_library v0.1.9
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling bytecount v0.6.2
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking xi-unicode v0.2.1
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking twox-hash v1.6.0
[INFO] [stderr]     Checking glyph_brush_layout v0.1.9
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking slice-deque v0.3.0
[INFO] [stderr]     Checking ogg v0.7.1
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking mint v0.5.6
[INFO] [stderr]     Checking lewton v0.9.4
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking cpal v0.8.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking minimp3 v0.3.5
[INFO] [stderr]     Checking glyph_brush v0.6.3
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking gfx_device_gl v0.16.2
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]     Checking claxon v0.4.3
[INFO] [stderr]     Checking glyph_brush v0.5.4
[INFO] [stderr]     Checking wayland-commons v0.21.13
[INFO] [stderr]     Checking directories v2.0.2
[INFO] [stderr]     Checking gfx v0.18.2
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking nalgebra v0.18.1
[INFO] [stderr]    Compiling euclid_macros v0.1.0
[INFO] [stderr]    Compiling smart-default v0.5.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking euclid v0.19.9
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking zip v0.5.9
[INFO] [stderr]     Checking lyon_geom v0.12.7
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking gilrs-core v0.2.6
[INFO] [stderr]     Checking image v0.22.5
[INFO] [stderr]     Checking gilrs v0.7.4
[INFO] [stderr]     Checking lyon_path v0.13.2
[INFO] [stderr]     Checking lyon_tessellation v0.13.5
[INFO] [stderr]     Checking lyon_algorithms v0.13.4
[INFO] [stderr]     Checking lyon v0.13.5
[INFO] [stderr]     Checking toml v0.5.7
[INFO] [stderr]    Compiling cargo_metadata v0.10.0
[INFO] [stderr]    Compiling skeptic v0.13.5
[INFO] [stderr]    Compiling ggez v0.5.1
[INFO] [stderr]     Checking rodio v0.9.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.6
[INFO] [stderr]     Checking winit v0.19.5
[INFO] [stderr]     Checking glutin v0.20.1
[INFO] [stderr]     Checking gfx_window_glutin v0.30.0
[INFO] [stderr]     Checking chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             Piece::Empty => return,
[INFO] [stdout]     |             ------------ matches some of the same values
[INFO] [stdout] 152 |             Piece::Black(_) => {
[INFO] [stdout]     |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 156 |             Piece::White(_) => {
[INFO] [stdout]     |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 160 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:545:13
[INFO] [stdout]     |
[INFO] [stdout] 545 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:545:13
[INFO] [stdout]     |
[INFO] [stdout] 542 |             Piece::Black(_) => self.color == Color::Black,
[INFO] [stdout]     |             --------------- matches some of the same values
[INFO] [stdout] 543 |             Piece::White(_) => self.color == Color::White,
[INFO] [stdout]     |             --------------- matches some of the same values
[INFO] [stdout] 544 |             Piece::Empty => false,
[INFO] [stdout]     |             ------------ matches some of the same values
[INFO] [stdout] 545 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:576:25
[INFO] [stdout]     |
[INFO] [stdout] 576 |                         _ => unreachable!(),
[INFO] [stdout]     |                         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:576:25
[INFO] [stdout]     |
[INFO] [stdout] 574 |                         Color::Black => Color::White,
[INFO] [stdout]     |                         ------------ matches some of the same values
[INFO] [stdout] 575 |                         Color::White => Color::Black,
[INFO] [stdout]     |                         ------------ matches some of the same values
[INFO] [stdout] 576 |                         _ => unreachable!(),
[INFO] [stdout]     |                         ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 160 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:160:13
[INFO] [stdout]     |
[INFO] [stdout] 151 |             Piece::Empty => return,
[INFO] [stdout]     |             ------------ matches some of the same values
[INFO] [stdout] 152 |             Piece::Black(_) => {
[INFO] [stdout]     |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 156 |             Piece::White(_) => {
[INFO] [stdout]     |             --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 160 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:545:13
[INFO] [stdout]     |
[INFO] [stdout] 545 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:545:13
[INFO] [stdout]     |
[INFO] [stdout] 542 |             Piece::Black(_) => self.color == Color::Black,
[INFO] [stdout]     |             --------------- matches some of the same values
[INFO] [stdout] 543 |             Piece::White(_) => self.color == Color::White,
[INFO] [stdout]     |             --------------- matches some of the same values
[INFO] [stdout] 544 |             Piece::Empty => false,
[INFO] [stdout]     |             ------------ matches some of the same values
[INFO] [stdout] 545 |             _ => unreachable!(),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:576:25
[INFO] [stdout]     |
[INFO] [stdout] 576 |                         _ => unreachable!(),
[INFO] [stdout]     |                         ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:576:25
[INFO] [stdout]     |
[INFO] [stdout] 574 |                         Color::Black => Color::White,
[INFO] [stdout]     |                         ------------ matches some of the same values
[INFO] [stdout] 575 |                         Color::White => Color::Black,
[INFO] [stdout]     |                         ------------ matches some of the same values
[INFO] [stdout] 576 |                         _ => unreachable!(),
[INFO] [stdout]     |                         ^ collectively making this unreachable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 54.55s
[INFO] running `Command { std: "docker" "inspect" "8cafba2d6ce1869ccf449ee2e9db6ca104ff773152817a3fb26e327f30f08b96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cafba2d6ce1869ccf449ee2e9db6ca104ff773152817a3fb26e327f30f08b96", kill_on_drop: false }`
[INFO] [stdout] 8cafba2d6ce1869ccf449ee2e9db6ca104ff773152817a3fb26e327f30f08b96
