[INFO] cloning repository https://github.com/ArtiomMat/simple_rust_chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArtiomMat/simple_rust_chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtiomMat%2Fsimple_rust_chess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtiomMat%2Fsimple_rust_chess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 21934c4bbe0b6dd9efc961b6b0c8e05d1ebf5f62
[INFO] testing ArtiomMat/simple_rust_chess against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArtiomMat%2Fsimple_rust_chess" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ArtiomMat/simple_rust_chess
[INFO] finished tweaking git repo https://github.com/ArtiomMat/simple_rust_chess
[INFO] tweaked toml for git repo https://github.com/ArtiomMat/simple_rust_chess written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ArtiomMat/simple_rust_chess on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ArtiomMat/simple_rust_chess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded quote v1.0.36
[INFO] [stderr]   Downloaded proc-macro2 v1.0.86
[INFO] [stderr]   Downloaded getrandom v0.2.15
[INFO] [stderr]   Downloaded pkg-config v0.3.30
[INFO] [stderr]   Downloaded x11 v2.21.0
[INFO] [stderr]   Downloaded ppv-lite86 v0.2.20
[INFO] [stderr]   Downloaded syn v2.0.72
[INFO] [stderr]   Downloaded libc v0.2.155
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cbd1b8d3c66f491bb02acaf2e460ad7499a2162c71cb8fa0e5bda7d199f033c9
[INFO] running `Command { std: "docker" "start" "-a" "cbd1b8d3c66f491bb02acaf2e460ad7499a2162c71cb8fa0e5bda7d199f033c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cbd1b8d3c66f491bb02acaf2e460ad7499a2162c71cb8fa0e5bda7d199f033c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbd1b8d3c66f491bb02acaf2e460ad7499a2162c71cb8fa0e5bda7d199f033c9", kill_on_drop: false }`
[INFO] [stdout] cbd1b8d3c66f491bb02acaf2e460ad7499a2162c71cb8fa0e5bda7d199f033c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69869e99bc74bea98b0a357aa4bf84ec62b2ab23622de820cfcf18a82fde5090
[INFO] running `Command { std: "docker" "start" "-a" "69869e99bc74bea98b0a357aa4bf84ec62b2ab23622de820cfcf18a82fde5090", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling pkg-config v0.3.30
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.72
[INFO] [stderr]    Compiling x11 v2.21.0
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling simple_rust_chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::pieces::*`
[INFO] [stdout]  --> src/common.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::pieces::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RngCore`
[INFO] [stdout]  --> src/pieces.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::{self, Rng, RngCore};
[INFO] [stdout]   |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Range` and `any::Any`
[INFO] [stdout]  --> src/pieces.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     any::Any,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 6 |     fmt,
[INFO] [stdout] 7 |     ops::{Range, RangeInclusive},
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::pieces::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::pieces::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::common::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nature`
[INFO] [stdout]    --> src/pieces.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |         let nature: u32 = 0;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nature`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `legals`
[INFO] [stdout]    --> src/pieces.rs:293:27
[INFO] [stdout]     |
[INFO] [stdout] 293 |     fn legal_moves(&self, legals: &mut LegalMoves) -> usize {
[INFO] [stdout]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_legals`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/pieces.rs:297:33
[INFO] [stdout]     |
[INFO] [stdout] 297 |     pub fn is_legal_move(&self, pos: &Pos) -> bool {
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_LEGAL_MOVES` is never used
[INFO] [stdout]  --> src/common.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const MAX_LEGAL_MOVES: usize = 64;
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Pos` is never used
[INFO] [stdout]   --> src/common.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub type Pos = [i8; 2];
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `LegalMoves` is never used
[INFO] [stdout]   --> src/common.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub type LegalMoves = [Pos; MAX_LEGAL_MOVES];
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CLASSIC_PIECES_N` is never used
[INFO] [stdout]   --> src/pieces.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const CLASSIC_PIECES_N: usize = 32;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Sex` is never used
[INFO] [stdout]   --> src/pieces.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum Sex {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Side` is never used
[INFO] [stdout]   --> src/pieces.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub enum Side {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Class` is never used
[INFO] [stdout]   --> src/pieces.rs:36:10
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub enum Class {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VOWELS` is never used
[INFO] [stdout]   --> src/pieces.rs:58:7
[INFO] [stdout]    |
[INFO] [stdout] 58 | const VOWELS: [&str; 13] = [
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CONSONANTS` is never used
[INFO] [stdout]   --> src/pieces.rs:61:7
[INFO] [stdout]    |
[INFO] [stdout] 61 | const CONSONANTS: [&str; 31] = [
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NAT_TRAITOR` is never used
[INFO] [stdout]   --> src/pieces.rs:68:7
[INFO] [stdout]    |
[INFO] [stdout] 68 | const NAT_TRAITOR: u32 = 0b1;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NAT_COWARD` is never used
[INFO] [stdout]   --> src/pieces.rs:71:7
[INFO] [stdout]    |
[INFO] [stdout] 71 | const NAT_COWARD: u32 = 0b10;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NAT_WARRIOR` is never used
[INFO] [stdout]   --> src/pieces.rs:74:7
[INFO] [stdout]    |
[INFO] [stdout] 74 | const NAT_WARRIOR: u32 = 0b100;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Piece` is never constructed
[INFO] [stdout]   --> src/pieces.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub struct Piece {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_friendless_except` is never used
[INFO] [stdout]    --> src/pieces.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn find_friendless_except(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_friendless` is never used
[INFO] [stdout]    --> src/pieces.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn find_friendless(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_friendless_pair` is never used
[INFO] [stdout]    --> src/pieces.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn find_friendless_pair(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_friends` is never used
[INFO] [stdout]    --> src/pieces.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn make_friends(
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/pieces.rs:165:12
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl Piece {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] 165 |     pub fn get_class(&self) -> Class {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 172 |     pub fn generate_classic() -> [Piece; CLASSIC_PIECES_N] {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 235 |     pub fn new(class: Class, side: Side, pos: &Pos) -> Piece {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 293 |     fn legal_moves(&self, legals: &mut LegalMoves) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 297 |     pub fn is_legal_move(&self, pos: &Pos) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 301 |     pub fn is_dead(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 305 |     pub fn try_move(&self, pos: &Pos) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BOARD_SIZE` is never used
[INFO] [stdout]  --> src/board.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const BOARD_SIZE: usize = 8;
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cell` is never constructed
[INFO] [stdout]  --> src/board.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Cell<'a> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BAD_TONE` is never used
[INFO] [stdout]  --> src/teller.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const BAD_TONE: i8 = -1;
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NIL_TONE` is never used
[INFO] [stdout]  --> src/teller.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const NIL_TONE: i8 = 0;
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GOOD_TONE` is never used
[INFO] [stdout]  --> src/teller.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const GOOD_TONE: i8 = 1;
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Teller` is never constructed
[INFO] [stdout]   --> src/teller.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Teller<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `begin`, `mark`, `sentence`, `backstory`, and `info` are never used
[INFO] [stdout]   --> src/teller.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<'a> Teller<'a> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 23 |     pub fn new(pieces: &'a [Piece]) -> Teller {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn begin(&mut self, i: u8) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn mark(&mut self, m: char) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn sentence(&mut self, fmt: &str, _tone: i8) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     pub fn backstory(&mut self, i: u8) -> &String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn info(&mut self, i: u8) -> &String {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/teller.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new(pieces: &'a [Piece]) -> Teller {
[INFO] [stdout]    |                         ^^             ------ the lifetime gets resolved as `'a`
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new(pieces: &'a [Piece]) -> Teller<'a> {
[INFO] [stdout]    |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.41s
[INFO] running `Command { std: "docker" "inspect" "69869e99bc74bea98b0a357aa4bf84ec62b2ab23622de820cfcf18a82fde5090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69869e99bc74bea98b0a357aa4bf84ec62b2ab23622de820cfcf18a82fde5090", kill_on_drop: false }`
[INFO] [stdout] 69869e99bc74bea98b0a357aa4bf84ec62b2ab23622de820cfcf18a82fde5090
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 496c1e1e4e617872c0f9114cc23b326d31c22ac385b1386a2caf3d5c59f979cc
[INFO] running `Command { std: "docker" "start" "-a" "496c1e1e4e617872c0f9114cc23b326d31c22ac385b1386a2caf3d5c59f979cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple_rust_chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::pieces::*`
[INFO] [stdout]  --> src/common.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::pieces::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `RngCore`
[INFO] [stdout]  --> src/pieces.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::{self, Rng, RngCore};
[INFO] [stdout]   |                       ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Range` and `any::Any`
[INFO] [stdout]  --> src/pieces.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     any::Any,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 6 |     fmt,
[INFO] [stdout] 7 |     ops::{Range, RangeInclusive},
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::pieces::*`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::pieces::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::common::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::common::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nature`
[INFO] [stdout]    --> src/pieces.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |         let nature: u32 = 0;
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nature`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `legals`
[INFO] [stdout]    --> src/pieces.rs:293:27
[INFO] [stdout]     |
[INFO] [stdout] 293 |     fn legal_moves(&self, legals: &mut LegalMoves) -> usize {
[INFO] [stdout]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_legals`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/pieces.rs:297:33
[INFO] [stdout]     |
[INFO] [stdout] 297 |     pub fn is_legal_move(&self, pos: &Pos) -> bool {
[INFO] [stdout]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `MAX_LEGAL_MOVES` is never used
[INFO] [stdout]  --> src/common.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const MAX_LEGAL_MOVES: usize = 64;
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Pos` is never used
[INFO] [stdout]   --> src/common.rs:10:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub type Pos = [i8; 2];
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `LegalMoves` is never used
[INFO] [stdout]   --> src/common.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub type LegalMoves = [Pos; MAX_LEGAL_MOVES];
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CLASSIC_PIECES_N` is never used
[INFO] [stdout]   --> src/pieces.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | const CLASSIC_PIECES_N: usize = 32;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Sex` is never used
[INFO] [stdout]   --> src/pieces.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub enum Sex {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Side` is never used
[INFO] [stdout]   --> src/pieces.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub enum Side {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Class` is never used
[INFO] [stdout]   --> src/pieces.rs:36:10
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub enum Class {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `VOWELS` is never used
[INFO] [stdout]   --> src/pieces.rs:58:7
[INFO] [stdout]    |
[INFO] [stdout] 58 | const VOWELS: [&str; 13] = [
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `CONSONANTS` is never used
[INFO] [stdout]   --> src/pieces.rs:61:7
[INFO] [stdout]    |
[INFO] [stdout] 61 | const CONSONANTS: [&str; 31] = [
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NAT_TRAITOR` is never used
[INFO] [stdout]   --> src/pieces.rs:68:7
[INFO] [stdout]    |
[INFO] [stdout] 68 | const NAT_TRAITOR: u32 = 0b1;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NAT_COWARD` is never used
[INFO] [stdout]   --> src/pieces.rs:71:7
[INFO] [stdout]    |
[INFO] [stdout] 71 | const NAT_COWARD: u32 = 0b10;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NAT_WARRIOR` is never used
[INFO] [stdout]   --> src/pieces.rs:74:7
[INFO] [stdout]    |
[INFO] [stdout] 74 | const NAT_WARRIOR: u32 = 0b100;
[INFO] [stdout]    |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Piece` is never constructed
[INFO] [stdout]   --> src/pieces.rs:76:12
[INFO] [stdout]    |
[INFO] [stdout] 76 | pub struct Piece {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_friendless_except` is never used
[INFO] [stdout]    --> src/pieces.rs:101:4
[INFO] [stdout]     |
[INFO] [stdout] 101 | fn find_friendless_except(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_friendless` is never used
[INFO] [stdout]    --> src/pieces.rs:123:4
[INFO] [stdout]     |
[INFO] [stdout] 123 | fn find_friendless(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `find_friendless_pair` is never used
[INFO] [stdout]    --> src/pieces.rs:130:4
[INFO] [stdout]     |
[INFO] [stdout] 130 | fn find_friendless_pair(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_friends` is never used
[INFO] [stdout]    --> src/pieces.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn make_friends(
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/pieces.rs:165:12
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl Piece {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout] 165 |     pub fn get_class(&self) -> Class {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 172 |     pub fn generate_classic() -> [Piece; CLASSIC_PIECES_N] {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 235 |     pub fn new(class: Class, side: Side, pos: &Pos) -> Piece {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 293 |     fn legal_moves(&self, legals: &mut LegalMoves) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 297 |     pub fn is_legal_move(&self, pos: &Pos) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 301 |     pub fn is_dead(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 305 |     pub fn try_move(&self, pos: &Pos) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BOARD_SIZE` is never used
[INFO] [stdout]  --> src/board.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const BOARD_SIZE: usize = 8;
[INFO] [stdout]   |           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cell` is never constructed
[INFO] [stdout]  --> src/board.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Cell<'a> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `BAD_TONE` is never used
[INFO] [stdout]  --> src/teller.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const BAD_TONE: i8 = -1;
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `NIL_TONE` is never used
[INFO] [stdout]  --> src/teller.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const NIL_TONE: i8 = 0;
[INFO] [stdout]   |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `GOOD_TONE` is never used
[INFO] [stdout]  --> src/teller.rs:7:11
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub const GOOD_TONE: i8 = 1;
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Teller` is never constructed
[INFO] [stdout]   --> src/teller.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Teller<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `begin`, `mark`, `sentence`, `backstory`, and `info` are never used
[INFO] [stdout]   --> src/teller.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<'a> Teller<'a> {
[INFO] [stdout]    | ------------------- associated items in this implementation
[INFO] [stdout] 23 |     pub fn new(pieces: &'a [Piece]) -> Teller {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     fn begin(&mut self, i: u8) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     fn mark(&mut self, m: char) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 59 |     fn sentence(&mut self, fmt: &str, _tone: i8) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     pub fn backstory(&mut self, i: u8) -> &String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn info(&mut self, i: u8) -> &String {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/teller.rs:23:25
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new(pieces: &'a [Piece]) -> Teller {
[INFO] [stdout]    |                         ^^             ------ the lifetime gets resolved as `'a`
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub fn new(pieces: &'a [Piece]) -> Teller<'a> {
[INFO] [stdout]    |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "496c1e1e4e617872c0f9114cc23b326d31c22ac385b1386a2caf3d5c59f979cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "496c1e1e4e617872c0f9114cc23b326d31c22ac385b1386a2caf3d5c59f979cc", kill_on_drop: false }`
[INFO] [stdout] 496c1e1e4e617872c0f9114cc23b326d31c22ac385b1386a2caf3d5c59f979cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Copt-level=3" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 30a7678cb737823f4dd949e63bc84f3d05ffc7c8215fe6b537dc636846b38ca3
[INFO] running `Command { std: "docker" "start" "-a" "30a7678cb737823f4dd949e63bc84f3d05ffc7c8215fe6b537dc636846b38ca3", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::pieces::*`
[INFO] [stderr]  --> src/common.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::pieces::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RngCore`
[INFO] [stderr]  --> src/pieces.rs:3:23
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::{self, Rng, RngCore};
[INFO] [stderr]   |                       ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Range` and `any::Any`
[INFO] [stderr]  --> src/pieces.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     any::Any,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 6 |     fmt,
[INFO] [stderr] 7 |     ops::{Range, RangeInclusive},
[INFO] [stderr]   |           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::pieces::*`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::pieces::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::common::*`
[INFO] [stderr]  --> src/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::common::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nature`
[INFO] [stderr]    --> src/pieces.rs:265:13
[INFO] [stderr]     |
[INFO] [stderr] 265 |         let nature: u32 = 0;
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_nature`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `legals`
[INFO] [stderr]    --> src/pieces.rs:293:27
[INFO] [stderr]     |
[INFO] [stderr] 293 |     fn legal_moves(&self, legals: &mut LegalMoves) -> usize {
[INFO] [stderr]     |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_legals`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pos`
[INFO] [stderr]    --> src/pieces.rs:297:33
[INFO] [stderr]     |
[INFO] [stderr] 297 |     pub fn is_legal_move(&self, pos: &Pos) -> bool {
[INFO] [stderr]     |                                 ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: constant `MAX_LEGAL_MOVES` is never used
[INFO] [stderr]  --> src/common.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const MAX_LEGAL_MOVES: usize = 64;
[INFO] [stderr]   |           ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `Pos` is never used
[INFO] [stderr]   --> src/common.rs:10:10
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub type Pos = [i8; 2];
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `LegalMoves` is never used
[INFO] [stderr]   --> src/common.rs:12:10
[INFO] [stderr]    |
[INFO] [stderr] 12 | pub type LegalMoves = [Pos; MAX_LEGAL_MOVES];
[INFO] [stderr]    |          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `CLASSIC_PIECES_N` is never used
[INFO] [stderr]   --> src/pieces.rs:12:7
[INFO] [stderr]    |
[INFO] [stderr] 12 | const CLASSIC_PIECES_N: usize = 32;
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Sex` is never used
[INFO] [stderr]   --> src/pieces.rs:15:10
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub enum Sex {
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Side` is never used
[INFO] [stderr]   --> src/pieces.rs:21:10
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Side {
[INFO] [stderr]    |          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Class` is never used
[INFO] [stderr]   --> src/pieces.rs:36:10
[INFO] [stderr]    |
[INFO] [stderr] 36 | pub enum Class {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `VOWELS` is never used
[INFO] [stderr]   --> src/pieces.rs:58:7
[INFO] [stderr]    |
[INFO] [stderr] 58 | const VOWELS: [&str; 13] = [
[INFO] [stderr]    |       ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `CONSONANTS` is never used
[INFO] [stderr]   --> src/pieces.rs:61:7
[INFO] [stderr]    |
[INFO] [stderr] 61 | const CONSONANTS: [&str; 31] = [
[INFO] [stderr]    |       ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `NAT_TRAITOR` is never used
[INFO] [stderr]   --> src/pieces.rs:68:7
[INFO] [stderr]    |
[INFO] [stderr] 68 | const NAT_TRAITOR: u32 = 0b1;
[INFO] [stderr]    |       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `NAT_COWARD` is never used
[INFO] [stderr]   --> src/pieces.rs:71:7
[INFO] [stderr]    |
[INFO] [stderr] 71 | const NAT_COWARD: u32 = 0b10;
[INFO] [stderr]    |       ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `NAT_WARRIOR` is never used
[INFO] [stderr]   --> src/pieces.rs:74:7
[INFO] [stderr]    |
[INFO] [stderr] 74 | const NAT_WARRIOR: u32 = 0b100;
[INFO] [stderr]    |       ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Piece` is never constructed
[INFO] [stderr]   --> src/pieces.rs:76:12
[INFO] [stderr]    |
[INFO] [stderr] 76 | pub struct Piece {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `find_friendless_except` is never used
[INFO] [stderr]    --> src/pieces.rs:101:4
[INFO] [stderr]     |
[INFO] [stderr] 101 | fn find_friendless_except(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `find_friendless` is never used
[INFO] [stderr]    --> src/pieces.rs:123:4
[INFO] [stderr]     |
[INFO] [stderr] 123 | fn find_friendless(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `find_friendless_pair` is never used
[INFO] [stderr]    --> src/pieces.rs:130:4
[INFO] [stderr]     |
[INFO] [stderr] 130 | fn find_friendless_pair(
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `make_friends` is never used
[INFO] [stderr]    --> src/pieces.rs:140:4
[INFO] [stderr]     |
[INFO] [stderr] 140 | fn make_friends(
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: multiple associated items are never used
[INFO] [stderr]    --> src/pieces.rs:165:12
[INFO] [stderr]     |
[INFO] [stderr] 164 | impl Piece {
[INFO] [stderr]     | ---------- associated items in this implementation
[INFO] [stderr] 165 |     pub fn get_class(&self) -> Class {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 172 |     pub fn generate_classic() -> [Piece; CLASSIC_PIECES_N] {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 235 |     pub fn new(class: Class, side: Side, pos: &Pos) -> Piece {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 293 |     fn legal_moves(&self, legals: &mut LegalMoves) -> usize {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 297 |     pub fn is_legal_move(&self, pos: &Pos) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 301 |     pub fn is_dead(&self) -> bool {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 305 |     pub fn try_move(&self, pos: &Pos) -> bool {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BOARD_SIZE` is never used
[INFO] [stderr]  --> src/board.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const BOARD_SIZE: usize = 8;
[INFO] [stderr]   |           ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Cell` is never constructed
[INFO] [stderr]  --> src/board.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Cell<'a> {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `BAD_TONE` is never used
[INFO] [stderr]  --> src/teller.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const BAD_TONE: i8 = -1;
[INFO] [stderr]   |           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `NIL_TONE` is never used
[INFO] [stderr]  --> src/teller.rs:6:11
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub const NIL_TONE: i8 = 0;
[INFO] [stderr]   |           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `GOOD_TONE` is never used
[INFO] [stderr]  --> src/teller.rs:7:11
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub const GOOD_TONE: i8 = 1;
[INFO] [stderr]   |           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Teller` is never constructed
[INFO] [stderr]   --> src/teller.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Teller<'a> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `begin`, `mark`, `sentence`, `backstory`, and `info` are never used
[INFO] [stderr]   --> src/teller.rs:23:12
[INFO] [stderr]    |
[INFO] [stderr] 22 | impl<'a> Teller<'a> {
[INFO] [stderr]    | ------------------- associated items in this implementation
[INFO] [stderr] 23 |     pub fn new(pieces: &'a [Piece]) -> Teller {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 34 |     fn begin(&mut self, i: u8) {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 46 |     fn mark(&mut self, m: char) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 59 |     fn sentence(&mut self, fmt: &str, _tone: i8) {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 82 |     pub fn backstory(&mut self, i: u8) -> &String {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 91 |     pub fn info(&mut self, i: u8) -> &String {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/teller.rs:23:25
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn new(pieces: &'a [Piece]) -> Teller {
[INFO] [stderr]    |                         ^^             ------ the lifetime gets resolved as `'a`
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to consistently use `'a`
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn new(pieces: &'a [Piece]) -> Teller<'a> {
[INFO] [stderr]    |                                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `simple_rust_chess` (bin "simple_rust_chess" test) generated 34 warnings (run `cargo fix --bin "simple_rust_chess" --tests` to apply 5 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/simple_rust_chess-91c751a41cbb0f8a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "30a7678cb737823f4dd949e63bc84f3d05ffc7c8215fe6b537dc636846b38ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a7678cb737823f4dd949e63bc84f3d05ffc7c8215fe6b537dc636846b38ca3", kill_on_drop: false }`
[INFO] [stdout] 30a7678cb737823f4dd949e63bc84f3d05ffc7c8215fe6b537dc636846b38ca3
