[INFO] cloning repository https://github.com/dandeeccastro/dan_engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dandeeccastro/dan_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdandeeccastro%2Fdan_engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdandeeccastro%2Fdan_engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c5389ed57c446d09736b117b609db4813605058
[INFO] documenting dandeeccastro/dan_engine against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdandeeccastro%2Fdan_engine" "/workspace/builds/worker-19/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-19/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dandeeccastro/dan_engine on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dandeeccastro/dan_engine
[INFO] finished tweaking git repo https://github.com/dandeeccastro/dan_engine
[INFO] tweaked toml for git repo https://github.com/dandeeccastro/dan_engine written to /workspace/builds/worker-19/source/Cargo.toml
[INFO] crate git repo https://github.com/dandeeccastro/dan_engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 504c15f3eff49d2a34f788b5ca5538e38479e43ec17006dd94d27771e640dfb3
[INFO] running `Command { std: "docker" "start" "-a" "504c15f3eff49d2a34f788b5ca5538e38479e43ec17006dd94d27771e640dfb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "504c15f3eff49d2a34f788b5ca5538e38479e43ec17006dd94d27771e640dfb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "504c15f3eff49d2a34f788b5ca5538e38479e43ec17006dd94d27771e640dfb3", kill_on_drop: false }`
[INFO] [stdout] 504c15f3eff49d2a34f788b5ca5538e38479e43ec17006dd94d27771e640dfb3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-19/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81e8fa6d9fd924319feda51c5dcd17c0b82e658e248890de642c45799196e608
[INFO] running `Command { std: "docker" "start" "-a" "81e8fa6d9fd924319feda51c5dcd17c0b82e658e248890de642c45799196e608", kill_on_drop: false }`
[INFO] [stderr]     Checking chess v0.1.0 (/opt/rustwide/workdir/chess)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> chess/src/lib.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         for i in 0..5 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> chess/src/lib.rs:90:13
[INFO] [stdout]    |
[INFO] [stdout] 90 |         for i in 0..5 {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `flood` is assigned to, but never used
[INFO] [stdout]   --> chess/src/lib.rs:99:17
[INFO] [stdout]    |
[INFO] [stdout] 99 |         let mut flood: u64 = bitboard;
[INFO] [stdout]    |                 ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_flood` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> chess/src/lib.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         for i in 0..5 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `flood` is never read
[INFO] [stdout]    --> chess/src/lib.rs:106:9
[INFO] [stdout]     |
[INFO] [stdout] 106 |         flood |= east(bitboard) & empty;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `flood` is assigned to, but never used
[INFO] [stdout]    --> chess/src/lib.rs:111:17
[INFO] [stdout]     |
[INFO] [stdout] 111 |         let mut flood: u64 = bitboard;
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_flood` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> chess/src/lib.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         for i in 0..5 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `flood` is never read
[INFO] [stdout]    --> chess/src/lib.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |         flood |= east(bitboard) & empty;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `flood` is assigned to, but never used
[INFO] [stdout]    --> chess/src/lib.rs:124:17
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let mut flood:u64 = bitboard;
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_flood` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> chess/src/lib.rs:127:13
[INFO] [stdout]     |
[INFO] [stdout] 127 |         for i in 0..5 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `flood` is never read
[INFO] [stdout]    --> chess/src/lib.rs:132:9
[INFO] [stdout]     |
[INFO] [stdout] 132 |         flood |= northeast(bitboard) & empty;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `flood` is assigned to, but never used
[INFO] [stdout]    --> chess/src/lib.rs:137:17
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let mut flood:u64 = bitboard;
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_flood` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> chess/src/lib.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |         for i in 0..5 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `flood` is never read
[INFO] [stdout]    --> chess/src/lib.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |         flood |= southeast(bitboard) & empty;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `flood` is assigned to, but never used
[INFO] [stdout]    --> chess/src/lib.rs:150:17
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let mut flood:u64 = bitboard;
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_flood` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> chess/src/lib.rs:153:13
[INFO] [stdout]     |
[INFO] [stdout] 153 |         for i in 0..5 {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `flood` is never read
[INFO] [stdout]    --> chess/src/lib.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |         flood |= northwest(bitboard) & empty;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `flood` is assigned to, but never used
[INFO] [stdout]    --> chess/src/lib.rs:163:17
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let mut flood:u64 = bitboard;
[INFO] [stdout]     |                 ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_flood` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> chess/src/lib.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |         for i in 0..5 { 
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `flood` is never read
[INFO] [stdout]    --> chess/src/lib.rs:171:9
[INFO] [stdout]     |
[INFO] [stdout] 171 |         flood |= southwest(bitboard) & empty;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `fen`
[INFO] [stdout]   --> chess/src/lib.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fen: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NOT_A_FILE`
[INFO] [stdout]   --> chess/src/lib.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     const NOT_A_FILE: u64 = 0xfefefefefefefefe;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NOT_H_FILE`
[INFO] [stdout]   --> chess/src/lib.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     const NOT_H_FILE: u64 = 0x7f7f7f7f7f7f7f7f;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `south`
[INFO] [stdout]   --> chess/src/lib.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn south(bitboard:u64) -> u64 { return bitboard >> 8; } 
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `north`
[INFO] [stdout]   --> chess/src/lib.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn north(bitboard:u64) -> u64 { return bitboard << 8; } 
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `east`
[INFO] [stdout]   --> chess/src/lib.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 59 |     fn east(bitboard:u64)  -> u64 { 
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `west`
[INFO] [stdout]   --> chess/src/lib.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn west(bitboard:u64)  -> u64 { 
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `southeast`
[INFO] [stdout]   --> chess/src/lib.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn southeast(bitboard:u64) -> u64 { 
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `southwest`
[INFO] [stdout]   --> chess/src/lib.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn southwest(bitboard:u64) -> u64 { 
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `northeast`
[INFO] [stdout]   --> chess/src/lib.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn northeast(bitboard:u64) -> u64 { 
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `northwest`
[INFO] [stdout]   --> chess/src/lib.rs:74:8
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn northwest(bitboard:u64) -> u64 { 
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `north_slide`
[INFO] [stdout]   --> chess/src/lib.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 |     fn north_slide(mut bitboard:u64, empty:u64) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `south_slide`
[INFO] [stdout]   --> chess/src/lib.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn south_slide(mut bitboard:u64, empty:u64) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `east_slide`
[INFO] [stdout]   --> chess/src/lib.rs:98:8
[INFO] [stdout]    |
[INFO] [stdout] 98 |     fn east_slide(mut bitboard:u64, mut empty:u64) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `west_slide`
[INFO] [stdout]    --> chess/src/lib.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn west_slide(mut bitboard:u64, mut empty:u64) -> u64 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `northeast_slide`
[INFO] [stdout]    --> chess/src/lib.rs:123:8
[INFO] [stdout]     |
[INFO] [stdout] 123 |     fn northeast_slide(mut bitboard:u64, mut empty:u64) -> u64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `southeast_slide`
[INFO] [stdout]    --> chess/src/lib.rs:136:8
[INFO] [stdout]     |
[INFO] [stdout] 136 |     fn southeast_slide(mut bitboard:u64, mut empty:u64) -> u64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `northwest_slide`
[INFO] [stdout]    --> chess/src/lib.rs:149:8
[INFO] [stdout]     |
[INFO] [stdout] 149 |     fn northwest_slide(mut bitboard:u64, mut empty:u64) -> u64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `southwest_slide`
[INFO] [stdout]    --> chess/src/lib.rs:162:8
[INFO] [stdout]     |
[INFO] [stdout] 162 |     fn southwest_slide(mut bitboard:u64, mut empty:u64) -> u64 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `knights`
[INFO] [stdout]    --> chess/src/lib.rs:175:12
[INFO] [stdout]     |
[INFO] [stdout] 175 |     pub fn knights(bitboard:u64) -> u64 {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `w_single_pawn_push`
[INFO] [stdout]    --> chess/src/lib.rs:188:12
[INFO] [stdout]     |
[INFO] [stdout] 188 |     pub fn w_single_pawn_push(bitboard:u64, empty:u64) -> u64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `w_double_pawn_push`
[INFO] [stdout]    --> chess/src/lib.rs:192:12
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn w_double_pawn_push(bitboard:u64, empty:u64) -> u64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `b_single_pawn_push`
[INFO] [stdout]    --> chess/src/lib.rs:196:12
[INFO] [stdout]     |
[INFO] [stdout] 196 |     pub fn b_single_pawn_push(bitboard:u64, empty:u64) -> u64 { 
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `b_double_pawn_push`
[INFO] [stdout]    --> chess/src/lib.rs:200:12
[INFO] [stdout]     |
[INFO] [stdout] 200 |     pub fn b_double_pawn_push(bitboard:u64, empty:u64) -> u64 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `kings`
[INFO] [stdout]    --> chess/src/lib.rs:204:12
[INFO] [stdout]     |
[INFO] [stdout] 204 |     pub fn kings(bitboard:u64, empty:u64) -> u64 {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `rooks`
[INFO] [stdout]    --> chess/src/lib.rs:217:12
[INFO] [stdout]     |
[INFO] [stdout] 217 |     pub fn rooks(bitboard:u64, empty:u64) -> u64 {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bishops`
[INFO] [stdout]    --> chess/src/lib.rs:226:12
[INFO] [stdout]     |
[INFO] [stdout] 226 |     pub fn bishops(bitboard:u64, empty:u64) -> u64 {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `queen`
[INFO] [stdout]    --> chess/src/lib.rs:235:12
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn queen(bitboard:u64, empty:u64) -> u64 {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 48 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting dan_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `Command { std: "docker" "inspect" "81e8fa6d9fd924319feda51c5dcd17c0b82e658e248890de642c45799196e608", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81e8fa6d9fd924319feda51c5dcd17c0b82e658e248890de642c45799196e608", kill_on_drop: false }`
[INFO] [stdout] 81e8fa6d9fd924319feda51c5dcd17c0b82e658e248890de642c45799196e608