[INFO] cloning repository https://github.com/mkyl/cicada
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mkyl/cicada" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkyl%2Fcicada", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkyl%2Fcicada'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4519dedcdf37ee0a364dfd73861c2475ed2f2c33
[INFO] testing mkyl/cicada against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkyl%2Fcicada" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mkyl/cicada on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mkyl/cicada
[INFO] finished tweaking git repo https://github.com/mkyl/cicada
[INFO] tweaked toml for git repo https://github.com/mkyl/cicada written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/mkyl/cicada already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 45514c90b28d561774da87b3a18aa1dc66e1aae82151e53fef26995e8dfbf1d0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "45514c90b28d561774da87b3a18aa1dc66e1aae82151e53fef26995e8dfbf1d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45514c90b28d561774da87b3a18aa1dc66e1aae82151e53fef26995e8dfbf1d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45514c90b28d561774da87b3a18aa1dc66e1aae82151e53fef26995e8dfbf1d0", kill_on_drop: false }`
[INFO] [stdout] 45514c90b28d561774da87b3a18aa1dc66e1aae82151e53fef26995e8dfbf1d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e3b2881b8d60d112380cdd607b528e26e2c4fea6c20b2ac75a8dc6e5db0d579e
[INFO] running `Command { std: "docker" "start" "-a" "e3b2881b8d60d112380cdd607b528e26e2c4fea6c20b2ac75a8dc6e5db0d579e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cicada v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/board.rs:107:18
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn init() -> (chessboard) {
[INFO] [stdout]     |                  ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 107 - pub fn init() -> (chessboard) {
[INFO] [stdout] 107 + pub fn init() -> chessboard {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/board.rs:172:18
[INFO] [stdout]     |
[INFO] [stdout] 172 |     board.past = { unsafe { mem::zeroed() } };
[INFO] [stdout]     |                  ^^                        ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 172 -     board.past = { unsafe { mem::zeroed() } };
[INFO] [stdout] 172 +     board.past = unsafe { mem::zeroed() };
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/board.rs:177:52
[INFO] [stdout]     |
[INFO] [stdout] 177 | pub fn AN_to_chocolate (file : char, rank : u8) -> (u8) {
[INFO] [stdout]     |                                                    ^  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 177 - pub fn AN_to_chocolate (file : char, rank : u8) -> (u8) {
[INFO] [stdout] 177 + pub fn AN_to_chocolate (file : char, rank : u8) -> u8 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/board.rs:184:46
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn AN_to_board (file : u8, rank : u8) -> (u8) {
[INFO] [stdout]     |                                              ^  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 184 - pub fn AN_to_board (file : u8, rank : u8) -> (u8) {
[INFO] [stdout] 184 + pub fn AN_to_board (file : u8, rank : u8) -> u8 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `board::chessboard`
[INFO] [stdout]  --> src/zobrist.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use board::chessboard;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/fen.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |             '1' ... '8' => empty = fen[counter],
[INFO] [stdout]    |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/movement.rs:79:15
[INFO] [stdout]    |
[INFO] [stdout] 79 |         _ => {;}
[INFO] [stdout]    |               ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/movement.rs:91:15
[INFO] [stdout]    |
[INFO] [stdout] 91 |         _ => {;}
[INFO] [stdout]    |               ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `best`
[INFO] [stdout]    --> src/think.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |     let mut best : u32 = 0;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_best`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `score` is never read
[INFO] [stdout]    --> src/think.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |     let mut score = 0;
[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: value assigned to `score` is never read
[INFO] [stdout]    --> src/think.rs:302:13
[INFO] [stdout]     |
[INFO] [stdout] 302 |     let mut score = -inf;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stale_alpha`
[INFO] [stdout]    --> src/think.rs:389:9
[INFO] [stdout]     |
[INFO] [stdout] 389 |     let stale_alpha = alpha;
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stale_alpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `score` is never read
[INFO] [stdout]    --> src/think.rs:392:13
[INFO] [stdout]     |
[INFO] [stdout] 392 |     let mut score = -inf;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/board.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     for mut l in &mut board.layout[0..full_board_size] {
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/zobrist.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         for mut r in &mut zobrist[..] {
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/zobrist.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |             for mut b in &mut r[..] {
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/zobrist.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         for mut c in &mut castling[..] {
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/zobrist.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         for mut e in &mut EP {
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/think.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |     let mut best : u32 = 0;
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/uci.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut input = &mut String::new();
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_1`
[INFO] [stdout]   --> src/board.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     rank_1,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_2`
[INFO] [stdout]   --> src/board.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     rank_2,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_3`
[INFO] [stdout]   --> src/board.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     rank_3,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_4`
[INFO] [stdout]   --> src/board.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     rank_4,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_5`
[INFO] [stdout]   --> src/board.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     rank_5,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_6`
[INFO] [stdout]   --> src/board.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     rank_6,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_7`
[INFO] [stdout]   --> src/board.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     rank_7,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `invalid_rank`
[INFO] [stdout]   --> src/board.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     invalid_rank
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A1`
[INFO] [stdout]   --> src/board.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     A1 = 21, B1, C1, D1, E1, F1, G1, H1,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H1`
[INFO] [stdout]   --> src/board.rs:58:38
[INFO] [stdout]    |
[INFO] [stdout] 58 |     A1 = 21, B1, C1, D1, E1, F1, G1, H1,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A2`
[INFO] [stdout]   --> src/board.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B2`
[INFO] [stdout]   --> src/board.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C2`
[INFO] [stdout]   --> src/board.rs:59:18
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D2`
[INFO] [stdout]   --> src/board.rs:59:22
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E2`
[INFO] [stdout]   --> src/board.rs:59:26
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F2`
[INFO] [stdout]   --> src/board.rs:59:30
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G2`
[INFO] [stdout]   --> src/board.rs:59:34
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H2`
[INFO] [stdout]   --> src/board.rs:59:38
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A3`
[INFO] [stdout]   --> src/board.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B3`
[INFO] [stdout]   --> src/board.rs:60:14
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C3`
[INFO] [stdout]   --> src/board.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D3`
[INFO] [stdout]   --> src/board.rs:60:22
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E3`
[INFO] [stdout]   --> src/board.rs:60:26
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F3`
[INFO] [stdout]   --> src/board.rs:60:30
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G3`
[INFO] [stdout]   --> src/board.rs:60:34
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H3`
[INFO] [stdout]   --> src/board.rs:60:38
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A4`
[INFO] [stdout]   --> src/board.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B4`
[INFO] [stdout]   --> src/board.rs:61:14
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C4`
[INFO] [stdout]   --> src/board.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D4`
[INFO] [stdout]   --> src/board.rs:61:22
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E4`
[INFO] [stdout]   --> src/board.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F4`
[INFO] [stdout]   --> src/board.rs:61:30
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G4`
[INFO] [stdout]   --> src/board.rs:61:34
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H4`
[INFO] [stdout]   --> src/board.rs:61:38
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A5`
[INFO] [stdout]   --> src/board.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B5`
[INFO] [stdout]   --> src/board.rs:62:14
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C5`
[INFO] [stdout]   --> src/board.rs:62:18
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D5`
[INFO] [stdout]   --> src/board.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E5`
[INFO] [stdout]   --> src/board.rs:62:26
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F5`
[INFO] [stdout]   --> src/board.rs:62:30
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G5`
[INFO] [stdout]   --> src/board.rs:62:34
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H5`
[INFO] [stdout]   --> src/board.rs:62:38
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A6`
[INFO] [stdout]   --> src/board.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B6`
[INFO] [stdout]   --> src/board.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C6`
[INFO] [stdout]   --> src/board.rs:63:18
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D6`
[INFO] [stdout]   --> src/board.rs:63:22
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E6`
[INFO] [stdout]   --> src/board.rs:63:26
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F6`
[INFO] [stdout]   --> src/board.rs:63:30
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G6`
[INFO] [stdout]   --> src/board.rs:63:34
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H6`
[INFO] [stdout]   --> src/board.rs:63:38
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A7`
[INFO] [stdout]   --> src/board.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B7`
[INFO] [stdout]   --> src/board.rs:64:14
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C7`
[INFO] [stdout]   --> src/board.rs:64:18
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D7`
[INFO] [stdout]   --> src/board.rs:64:22
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E7`
[INFO] [stdout]   --> src/board.rs:64:26
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F7`
[INFO] [stdout]   --> src/board.rs:64:30
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G7`
[INFO] [stdout]   --> src/board.rs:64:34
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H7`
[INFO] [stdout]   --> src/board.rs:64:38
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A8`
[INFO] [stdout]   --> src/board.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     A8 = 91, B8, C8, D8, E8, F8, G8, H8
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H8`
[INFO] [stdout]   --> src/board.rs:65:38
[INFO] [stdout]    |
[INFO] [stdout] 65 |     A8 = 91, B8, C8, D8, E8, F8, G8, H8
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static is never used: `leafnodes`
[INFO] [stdout]    --> src/sanity.rs:198:1
[INFO] [stdout]     |
[INFO] [stdout] 198 | static mut leafnodes : f64 = 0f64;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `perft`
[INFO] [stdout]    --> src/sanity.rs:200:8
[INFO] [stdout]     |
[INFO] [stdout] 200 | pub fn perft(depth : i32, cboard : &mut board::chessboard) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `perft_test`
[INFO] [stdout]    --> src/sanity.rs:220:8
[INFO] [stdout]     |
[INFO] [stdout] 220 | pub fn perft_test(depth: i32, cboard : &mut board::chessboard) -> f64 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 83 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.61s
[INFO] running `Command { std: "docker" "inspect" "e3b2881b8d60d112380cdd607b528e26e2c4fea6c20b2ac75a8dc6e5db0d579e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3b2881b8d60d112380cdd607b528e26e2c4fea6c20b2ac75a8dc6e5db0d579e", kill_on_drop: false }`
[INFO] [stdout] e3b2881b8d60d112380cdd607b528e26e2c4fea6c20b2ac75a8dc6e5db0d579e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8368736739a99e4f91b90e6e5cffde3d3dfb8e3bb0010e854dfba2c027d068f0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8368736739a99e4f91b90e6e5cffde3d3dfb8e3bb0010e854dfba2c027d068f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling cicada v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/board.rs:107:18
[INFO] [stdout]     |
[INFO] [stdout] 107 | pub fn init() -> (chessboard) {
[INFO] [stdout]     |                  ^          ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 107 - pub fn init() -> (chessboard) {
[INFO] [stdout] 107 + pub fn init() -> chessboard {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around assigned value
[INFO] [stdout]    --> src/board.rs:172:18
[INFO] [stdout]     |
[INFO] [stdout] 172 |     board.past = { unsafe { mem::zeroed() } };
[INFO] [stdout]     |                  ^^                        ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]     |
[INFO] [stdout] 172 -     board.past = { unsafe { mem::zeroed() } };
[INFO] [stdout] 172 +     board.past = unsafe { mem::zeroed() };
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/board.rs:177:52
[INFO] [stdout]     |
[INFO] [stdout] 177 | pub fn AN_to_chocolate (file : char, rank : u8) -> (u8) {
[INFO] [stdout]     |                                                    ^  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 177 - pub fn AN_to_chocolate (file : char, rank : u8) -> (u8) {
[INFO] [stdout] 177 + pub fn AN_to_chocolate (file : char, rank : u8) -> u8 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/board.rs:184:46
[INFO] [stdout]     |
[INFO] [stdout] 184 | pub fn AN_to_board (file : u8, rank : u8) -> (u8) {
[INFO] [stdout]     |                                              ^  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 184 - pub fn AN_to_board (file : u8, rank : u8) -> (u8) {
[INFO] [stdout] 184 + pub fn AN_to_board (file : u8, rank : u8) -> u8 {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `board::chessboard`
[INFO] [stdout]  --> src/zobrist.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use board::chessboard;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]   --> src/fen.rs:35:17
[INFO] [stdout]    |
[INFO] [stdout] 35 |             '1' ... '8' => empty = fen[counter],
[INFO] [stdout]    |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/movement.rs:79:15
[INFO] [stdout]    |
[INFO] [stdout] 79 |         _ => {;}
[INFO] [stdout]    |               ^ help: remove this semicolon
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/movement.rs:91:15
[INFO] [stdout]    |
[INFO] [stdout] 91 |         _ => {;}
[INFO] [stdout]    |               ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `think`
[INFO] [stdout]    --> src/sanity.rs:245:9
[INFO] [stdout]     |
[INFO] [stdout] 245 |     use think;
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/sanity.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |     for x in 0..4 {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `best`
[INFO] [stdout]    --> src/think.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |     let mut best : u32 = 0;
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_best`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `score` is never read
[INFO] [stdout]    --> src/think.rs:242:13
[INFO] [stdout]     |
[INFO] [stdout] 242 |     let mut score = 0;
[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: value assigned to `score` is never read
[INFO] [stdout]    --> src/think.rs:302:13
[INFO] [stdout]     |
[INFO] [stdout] 302 |     let mut score = -inf;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stale_alpha`
[INFO] [stdout]    --> src/think.rs:389:9
[INFO] [stdout]     |
[INFO] [stdout] 389 |     let stale_alpha = alpha;
[INFO] [stdout]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stale_alpha`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `score` is never read
[INFO] [stdout]    --> src/think.rs:392:13
[INFO] [stdout]     |
[INFO] [stdout] 392 |     let mut score = -inf;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/board.rs:145:9
[INFO] [stdout]     |
[INFO] [stdout] 145 |     for mut l in &mut board.layout[0..full_board_size] {
[INFO] [stdout]     |         ----^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/zobrist.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         for mut r in &mut zobrist[..] {
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/zobrist.rs:15:17
[INFO] [stdout]    |
[INFO] [stdout] 15 |             for mut b in &mut r[..] {
[INFO] [stdout]    |                 ----^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/zobrist.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |         for mut c in &mut castling[..] {
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/zobrist.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |         for mut e in &mut EP {
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/think.rs:241:9
[INFO] [stdout]     |
[INFO] [stdout] 241 |     let mut best : u32 = 0;
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/uci.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut input = &mut String::new();
[INFO] [stdout]   |         ----^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_1`
[INFO] [stdout]   --> src/board.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 38 |     rank_1,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_2`
[INFO] [stdout]   --> src/board.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     rank_2,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_3`
[INFO] [stdout]   --> src/board.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     rank_3,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_4`
[INFO] [stdout]   --> src/board.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     rank_4,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_5`
[INFO] [stdout]   --> src/board.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     rank_5,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_6`
[INFO] [stdout]   --> src/board.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     rank_6,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `rank_7`
[INFO] [stdout]   --> src/board.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     rank_7,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `invalid_rank`
[INFO] [stdout]   --> src/board.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     invalid_rank
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A1`
[INFO] [stdout]   --> src/board.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     A1 = 21, B1, C1, D1, E1, F1, G1, H1,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H1`
[INFO] [stdout]   --> src/board.rs:58:38
[INFO] [stdout]    |
[INFO] [stdout] 58 |     A1 = 21, B1, C1, D1, E1, F1, G1, H1,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A2`
[INFO] [stdout]   --> src/board.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B2`
[INFO] [stdout]   --> src/board.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C2`
[INFO] [stdout]   --> src/board.rs:59:18
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D2`
[INFO] [stdout]   --> src/board.rs:59:22
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E2`
[INFO] [stdout]   --> src/board.rs:59:26
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F2`
[INFO] [stdout]   --> src/board.rs:59:30
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G2`
[INFO] [stdout]   --> src/board.rs:59:34
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H2`
[INFO] [stdout]   --> src/board.rs:59:38
[INFO] [stdout]    |
[INFO] [stdout] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A3`
[INFO] [stdout]   --> src/board.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B3`
[INFO] [stdout]   --> src/board.rs:60:14
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C3`
[INFO] [stdout]   --> src/board.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D3`
[INFO] [stdout]   --> src/board.rs:60:22
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E3`
[INFO] [stdout]   --> src/board.rs:60:26
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F3`
[INFO] [stdout]   --> src/board.rs:60:30
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G3`
[INFO] [stdout]   --> src/board.rs:60:34
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H3`
[INFO] [stdout]   --> src/board.rs:60:38
[INFO] [stdout]    |
[INFO] [stdout] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A4`
[INFO] [stdout]   --> src/board.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B4`
[INFO] [stdout]   --> src/board.rs:61:14
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C4`
[INFO] [stdout]   --> src/board.rs:61:18
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D4`
[INFO] [stdout]   --> src/board.rs:61:22
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E4`
[INFO] [stdout]   --> src/board.rs:61:26
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F4`
[INFO] [stdout]   --> src/board.rs:61:30
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G4`
[INFO] [stdout]   --> src/board.rs:61:34
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H4`
[INFO] [stdout]   --> src/board.rs:61:38
[INFO] [stdout]    |
[INFO] [stdout] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A5`
[INFO] [stdout]   --> src/board.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B5`
[INFO] [stdout]   --> src/board.rs:62:14
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C5`
[INFO] [stdout]   --> src/board.rs:62:18
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D5`
[INFO] [stdout]   --> src/board.rs:62:22
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E5`
[INFO] [stdout]   --> src/board.rs:62:26
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F5`
[INFO] [stdout]   --> src/board.rs:62:30
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G5`
[INFO] [stdout]   --> src/board.rs:62:34
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H5`
[INFO] [stdout]   --> src/board.rs:62:38
[INFO] [stdout]    |
[INFO] [stdout] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A6`
[INFO] [stdout]   --> src/board.rs:63:5
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B6`
[INFO] [stdout]   --> src/board.rs:63:14
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C6`
[INFO] [stdout]   --> src/board.rs:63:18
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D6`
[INFO] [stdout]   --> src/board.rs:63:22
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E6`
[INFO] [stdout]   --> src/board.rs:63:26
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F6`
[INFO] [stdout]   --> src/board.rs:63:30
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G6`
[INFO] [stdout]   --> src/board.rs:63:34
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H6`
[INFO] [stdout]   --> src/board.rs:63:38
[INFO] [stdout]    |
[INFO] [stdout] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A7`
[INFO] [stdout]   --> src/board.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `B7`
[INFO] [stdout]   --> src/board.rs:64:14
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `C7`
[INFO] [stdout]   --> src/board.rs:64:18
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `D7`
[INFO] [stdout]   --> src/board.rs:64:22
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `E7`
[INFO] [stdout]   --> src/board.rs:64:26
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `F7`
[INFO] [stdout]   --> src/board.rs:64:30
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `G7`
[INFO] [stdout]   --> src/board.rs:64:34
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                                  ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H7`
[INFO] [stdout]   --> src/board.rs:64:38
[INFO] [stdout]    |
[INFO] [stdout] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `A8`
[INFO] [stdout]   --> src/board.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     A8 = 91, B8, C8, D8, E8, F8, G8, H8
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `H8`
[INFO] [stdout]   --> src/board.rs:65:38
[INFO] [stdout]    |
[INFO] [stdout] 65 |     A8 = 91, B8, C8, D8, E8, F8, G8, H8
[INFO] [stdout]    |                                      ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 82 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.82s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/cicada-03c5972c636d3cfa)
[INFO] running `Command { std: "docker" "inspect" "8368736739a99e4f91b90e6e5cffde3d3dfb8e3bb0010e854dfba2c027d068f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8368736739a99e4f91b90e6e5cffde3d3dfb8e3bb0010e854dfba2c027d068f0", kill_on_drop: false }`
[INFO] [stdout] 8368736739a99e4f91b90e6e5cffde3d3dfb8e3bb0010e854dfba2c027d068f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fb08d9da613e3b71c624dc22e3a85d526a41a5d3409e211f6d28ef490595293d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fb08d9da613e3b71c624dc22e3a85d526a41a5d3409e211f6d28ef490595293d", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/board.rs:107:18
[INFO] [stderr]     |
[INFO] [stderr] 107 | pub fn init() -> (chessboard) {
[INFO] [stderr]     |                  ^          ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 107 - pub fn init() -> (chessboard) {
[INFO] [stderr] 107 + pub fn init() -> chessboard {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around assigned value
[INFO] [stderr]    --> src/board.rs:172:18
[INFO] [stderr]     |
[INFO] [stderr] 172 |     board.past = { unsafe { mem::zeroed() } };
[INFO] [stderr]     |                  ^^                        ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] help: remove these braces
[INFO] [stderr]     |
[INFO] [stderr] 172 -     board.past = { unsafe { mem::zeroed() } };
[INFO] [stderr] 172 +     board.past = unsafe { mem::zeroed() };
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/board.rs:177:52
[INFO] [stderr]     |
[INFO] [stderr] 177 | pub fn AN_to_chocolate (file : char, rank : u8) -> (u8) {
[INFO] [stderr]     |                                                    ^  ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 177 - pub fn AN_to_chocolate (file : char, rank : u8) -> (u8) {
[INFO] [stderr] 177 + pub fn AN_to_chocolate (file : char, rank : u8) -> u8 {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/board.rs:184:46
[INFO] [stderr]     |
[INFO] [stderr] 184 | pub fn AN_to_board (file : u8, rank : u8) -> (u8) {
[INFO] [stderr]     |                                              ^  ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 184 - pub fn AN_to_board (file : u8, rank : u8) -> (u8) {
[INFO] [stderr] 184 + pub fn AN_to_board (file : u8, rank : u8) -> u8 {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `board::chessboard`
[INFO] [stderr]  --> src/zobrist.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use board::chessboard;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/fen.rs:35:17
[INFO] [stderr]    |
[INFO] [stderr] 35 |             '1' ... '8' => empty = fen[counter],
[INFO] [stderr]    |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/movement.rs:79:15
[INFO] [stderr]    |
[INFO] [stderr] 79 |         _ => {;}
[INFO] [stderr]    |               ^ help: remove this semicolon
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]   --> src/movement.rs:91:15
[INFO] [stderr]    |
[INFO] [stderr] 91 |         _ => {;}
[INFO] [stderr]    |               ^ help: remove this semicolon
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `think`
[INFO] [stderr]    --> src/sanity.rs:245:9
[INFO] [stderr]     |
[INFO] [stderr] 245 |     use think;
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/sanity.rs:100:9
[INFO] [stderr]     |
[INFO] [stderr] 100 |     for x in 0..4 {
[INFO] [stderr]     |         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `best`
[INFO] [stderr]    --> src/think.rs:241:13
[INFO] [stderr]     |
[INFO] [stderr] 241 |     let mut best : u32 = 0;
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_best`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `score` is never read
[INFO] [stderr]    --> src/think.rs:242:13
[INFO] [stderr]     |
[INFO] [stderr] 242 |     let mut score = 0;
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `score` is never read
[INFO] [stderr]    --> src/think.rs:302:13
[INFO] [stderr]     |
[INFO] [stderr] 302 |     let mut score = -inf;
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stale_alpha`
[INFO] [stderr]    --> src/think.rs:389:9
[INFO] [stderr]     |
[INFO] [stderr] 389 |     let stale_alpha = alpha;
[INFO] [stderr]     |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stale_alpha`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `score` is never read
[INFO] [stderr]    --> src/think.rs:392:13
[INFO] [stderr]     |
[INFO] [stderr] 392 |     let mut score = -inf;
[INFO] [stderr]     |             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/board.rs:145:9
[INFO] [stderr]     |
[INFO] [stderr] 145 |     for mut l in &mut board.layout[0..full_board_size] {
[INFO] [stderr]     |         ----^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/zobrist.rs:14:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |         for mut r in &mut zobrist[..] {
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/zobrist.rs:15:17
[INFO] [stderr]    |
[INFO] [stderr] 15 |             for mut b in &mut r[..] {
[INFO] [stderr]    |                 ----^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/zobrist.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |         for mut c in &mut castling[..] {
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/zobrist.rs:22:13
[INFO] [stderr]    |
[INFO] [stderr] 22 |         for mut e in &mut EP {
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/think.rs:241:9
[INFO] [stderr]     |
[INFO] [stderr] 241 |     let mut best : u32 = 0;
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/uci.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut input = &mut String::new();
[INFO] [stderr]   |         ----^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `rank_1`
[INFO] [stderr]   --> src/board.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     rank_1,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `rank_2`
[INFO] [stderr]   --> src/board.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     rank_2,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `rank_3`
[INFO] [stderr]   --> src/board.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 |     rank_3,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `rank_4`
[INFO] [stderr]   --> src/board.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     rank_4,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `rank_5`
[INFO] [stderr]   --> src/board.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     rank_5,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `rank_6`
[INFO] [stderr]   --> src/board.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     rank_6,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `rank_7`
[INFO] [stderr]   --> src/board.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     rank_7,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `invalid_rank`
[INFO] [stderr]   --> src/board.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     invalid_rank
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A1`
[INFO] [stderr]   --> src/board.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     A1 = 21, B1, C1, D1, E1, F1, G1, H1,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H1`
[INFO] [stderr]   --> src/board.rs:58:38
[INFO] [stderr]    |
[INFO] [stderr] 58 |     A1 = 21, B1, C1, D1, E1, F1, G1, H1,
[INFO] [stderr]    |                                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A2`
[INFO] [stderr]   --> src/board.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B2`
[INFO] [stderr]   --> src/board.rs:59:14
[INFO] [stderr]    |
[INFO] [stderr] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stderr]    |              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C2`
[INFO] [stderr]   --> src/board.rs:59:18
[INFO] [stderr]    |
[INFO] [stderr] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stderr]    |                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D2`
[INFO] [stderr]   --> src/board.rs:59:22
[INFO] [stderr]    |
[INFO] [stderr] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stderr]    |                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E2`
[INFO] [stderr]   --> src/board.rs:59:26
[INFO] [stderr]    |
[INFO] [stderr] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stderr]    |                          ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F2`
[INFO] [stderr]   --> src/board.rs:59:30
[INFO] [stderr]    |
[INFO] [stderr] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stderr]    |                              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G2`
[INFO] [stderr]   --> src/board.rs:59:34
[INFO] [stderr]    |
[INFO] [stderr] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stderr]    |                                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H2`
[INFO] [stderr]   --> src/board.rs:59:38
[INFO] [stderr]    |
[INFO] [stderr] 59 |     A2 = 31, B2, C2, D2, E2, F2, G2, H2,
[INFO] [stderr]    |                                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A3`
[INFO] [stderr]   --> src/board.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B3`
[INFO] [stderr]   --> src/board.rs:60:14
[INFO] [stderr]    |
[INFO] [stderr] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stderr]    |              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C3`
[INFO] [stderr]   --> src/board.rs:60:18
[INFO] [stderr]    |
[INFO] [stderr] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stderr]    |                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D3`
[INFO] [stderr]   --> src/board.rs:60:22
[INFO] [stderr]    |
[INFO] [stderr] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stderr]    |                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E3`
[INFO] [stderr]   --> src/board.rs:60:26
[INFO] [stderr]    |
[INFO] [stderr] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stderr]    |                          ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F3`
[INFO] [stderr]   --> src/board.rs:60:30
[INFO] [stderr]    |
[INFO] [stderr] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stderr]    |                              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G3`
[INFO] [stderr]   --> src/board.rs:60:34
[INFO] [stderr]    |
[INFO] [stderr] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stderr]    |                                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H3`
[INFO] [stderr]   --> src/board.rs:60:38
[INFO] [stderr]    |
[INFO] [stderr] 60 |     A3 = 41, B3, C3, D3, E3, F3, G3, H3,
[INFO] [stderr]    |                                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A4`
[INFO] [stderr]   --> src/board.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B4`
[INFO] [stderr]   --> src/board.rs:61:14
[INFO] [stderr]    |
[INFO] [stderr] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stderr]    |              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C4`
[INFO] [stderr]   --> src/board.rs:61:18
[INFO] [stderr]    |
[INFO] [stderr] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stderr]    |                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D4`
[INFO] [stderr]   --> src/board.rs:61:22
[INFO] [stderr]    |
[INFO] [stderr] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stderr]    |                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E4`
[INFO] [stderr]   --> src/board.rs:61:26
[INFO] [stderr]    |
[INFO] [stderr] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stderr]    |                          ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F4`
[INFO] [stderr]   --> src/board.rs:61:30
[INFO] [stderr]    |
[INFO] [stderr] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stderr]    |                              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G4`
[INFO] [stderr]   --> src/board.rs:61:34
[INFO] [stderr]    |
[INFO] [stderr] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stderr]    |                                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H4`
[INFO] [stderr]   --> src/board.rs:61:38
[INFO] [stderr]    |
[INFO] [stderr] 61 |     A4 = 51, B4, C4, D4, E4, F4, G4, H4,
[INFO] [stderr]    |                                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A5`
[INFO] [stderr]   --> src/board.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B5`
[INFO] [stderr]   --> src/board.rs:62:14
[INFO] [stderr]    |
[INFO] [stderr] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stderr]    |              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C5`
[INFO] [stderr]   --> src/board.rs:62:18
[INFO] [stderr]    |
[INFO] [stderr] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stderr]    |                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D5`
[INFO] [stderr]   --> src/board.rs:62:22
[INFO] [stderr]    |
[INFO] [stderr] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stderr]    |                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E5`
[INFO] [stderr]   --> src/board.rs:62:26
[INFO] [stderr]    |
[INFO] [stderr] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stderr]    |                          ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F5`
[INFO] [stderr]   --> src/board.rs:62:30
[INFO] [stderr]    |
[INFO] [stderr] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stderr]    |                              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G5`
[INFO] [stderr]   --> src/board.rs:62:34
[INFO] [stderr]    |
[INFO] [stderr] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stderr]    |                                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H5`
[INFO] [stderr]   --> src/board.rs:62:38
[INFO] [stderr]    |
[INFO] [stderr] 62 |     A5 = 61, B5, C5, D5, E5, F5, G5, H5,
[INFO] [stderr]    |                                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A6`
[INFO] [stderr]   --> src/board.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B6`
[INFO] [stderr]   --> src/board.rs:63:14
[INFO] [stderr]    |
[INFO] [stderr] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stderr]    |              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C6`
[INFO] [stderr]   --> src/board.rs:63:18
[INFO] [stderr]    |
[INFO] [stderr] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stderr]    |                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D6`
[INFO] [stderr]   --> src/board.rs:63:22
[INFO] [stderr]    |
[INFO] [stderr] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stderr]    |                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E6`
[INFO] [stderr]   --> src/board.rs:63:26
[INFO] [stderr]    |
[INFO] [stderr] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stderr]    |                          ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F6`
[INFO] [stderr]   --> src/board.rs:63:30
[INFO] [stderr]    |
[INFO] [stderr] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stderr]    |                              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G6`
[INFO] [stderr]   --> src/board.rs:63:34
[INFO] [stderr]    |
[INFO] [stderr] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stderr]    |                                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H6`
[INFO] [stderr]   --> src/board.rs:63:38
[INFO] [stderr]    |
[INFO] [stderr] 63 |     A6 = 71, B6, C6, D6, E6, F6, G6, H6,
[INFO] [stderr]    |                                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A7`
[INFO] [stderr]   --> src/board.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `B7`
[INFO] [stderr]   --> src/board.rs:64:14
[INFO] [stderr]    |
[INFO] [stderr] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stderr]    |              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `C7`
[INFO] [stderr]   --> src/board.rs:64:18
[INFO] [stderr]    |
[INFO] [stderr] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stderr]    |                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `D7`
[INFO] [stderr]   --> src/board.rs:64:22
[INFO] [stderr]    |
[INFO] [stderr] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stderr]    |                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `E7`
[INFO] [stderr]   --> src/board.rs:64:26
[INFO] [stderr]    |
[INFO] [stderr] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stderr]    |                          ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F7`
[INFO] [stderr]   --> src/board.rs:64:30
[INFO] [stderr]    |
[INFO] [stderr] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stderr]    |                              ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `G7`
[INFO] [stderr]   --> src/board.rs:64:34
[INFO] [stderr]    |
[INFO] [stderr] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stderr]    |                                  ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H7`
[INFO] [stderr]   --> src/board.rs:64:38
[INFO] [stderr]    |
[INFO] [stderr] 64 |     A7 = 81, B7, C7, D7, E7, F7, G7, H7,
[INFO] [stderr]    |                                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `A8`
[INFO] [stderr]   --> src/board.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     A8 = 91, B8, C8, D8, E8, F8, G8, H8
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `H8`
[INFO] [stderr]   --> src/board.rs:65:38
[INFO] [stderr]    |
[INFO] [stderr] 65 |     A8 = 91, B8, C8, D8, E8, F8, G8, H8
[INFO] [stderr]    |                                      ^^
[INFO] [stderr] 
[INFO] [stderr] warning: `cicada` (bin "cicada" test) generated 82 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cicada-03c5972c636d3cfa)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test sanity::piece_list ... ok
[INFO] [stdout] test sanity::layout ... ok
[INFO] [stdout] test sanity::move_make_hash ... ok
[INFO] [stdout] test sanity::castling ... ok
[INFO] [stdout] test sanity::hashing ... ok
[INFO] [stdout] test sanity::move_undo_hash ... ok
[INFO] [stdout] test sanity::repetition ... ok
[INFO] [stdout] test sanity::perft_suite ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 12.44s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fb08d9da613e3b71c624dc22e3a85d526a41a5d3409e211f6d28ef490595293d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb08d9da613e3b71c624dc22e3a85d526a41a5d3409e211f6d28ef490595293d", kill_on_drop: false }`
[INFO] [stdout] fb08d9da613e3b71c624dc22e3a85d526a41a5d3409e211f6d28ef490595293d