[INFO] updating cached repository nathanjent/ruby-the-ms.-hackman-bot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/nathanjent/ruby-the-ms.-hackman-bot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/nathanjent/ruby-the-ms.-hackman-bot" "work/ex/beta-1.38-1/sources/1.37.0/gh/nathanjent/ruby-the-ms.-hackman-bot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/nathanjent/ruby-the-ms.-hackman-bot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/nathanjent/ruby-the-ms.-hackman-bot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nathanjent/ruby-the-ms.-hackman-bot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nathanjent/ruby-the-ms.-hackman-bot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9c1c98050ede3daf2a850ab0b0ccc218ecd51210
[INFO] sha for GitHub repo nathanjent/ruby-the-ms.-hackman-bot: 9c1c98050ede3daf2a850ab0b0ccc218ecd51210
[INFO] validating manifest of nathanjent/ruby-the-ms.-hackman-bot on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of nathanjent/ruby-the-ms.-hackman-bot on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing nathanjent/ruby-the-ms.-hackman-bot
[INFO] finished frobbing nathanjent/ruby-the-ms.-hackman-bot
[INFO] frobbed toml for nathanjent/ruby-the-ms.-hackman-bot written to work/ex/beta-1.38-1/sources/1.37.0/gh/nathanjent/ruby-the-ms.-hackman-bot/Cargo.toml
[INFO] started frobbing nathanjent/ruby-the-ms.-hackman-bot
[INFO] finished frobbing nathanjent/ruby-the-ms.-hackman-bot
[INFO] frobbed toml for nathanjent/ruby-the-ms.-hackman-bot written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/nathanjent/ruby-the-ms.-hackman-bot/Cargo.toml
[INFO] crate nathanjent/ruby-the-ms.-hackman-bot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing nathanjent/ruby-the-ms.-hackman-bot against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nathanjent/ruby-the-ms.-hackman-bot:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] b44b34aa2896d937e00bd27b14335375cd834d61e83cf604bc468fa99ced706d
[INFO] running `"docker" "start" "-a" "b44b34aa2896d937e00bd27b14335375cd834d61e83cf604bc468fa99ced706d"`
[INFO] [stderr]    Compiling ruby_the_ms_hack_man_bot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/error.rs:7:19
[INFO] [stderr]   |
[INFO] [stderr] 7 | type BoxAny = Box<Any + Send>;
[INFO] [stderr]   |                   ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:49:32
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stderr]    |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enemy`
[INFO] [stderr]   --> src/field.rs:89:37
[INFO] [stderr]    |
[INFO] [stderr] 89 |                     CellItem::Enemy(enemy) => {
[INFO] [stderr]    |                                     ^^^^^ help: consider prefixing with an underscore: `_enemy`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/field.rs:92:36
[INFO] [stderr]    |
[INFO] [stderr] 92 |                     CellItem::Bomb(n) => {
[INFO] [stderr]    |                                    ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/handler.rs:86:62
[INFO] [stderr]    |
[INFO] [stderr] 86 |         Message::Action(Action::Character { time_to_respond: n }) => {
[INFO] [stderr]    |                                                              ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/handler.rs:90:57
[INFO] [stderr]    |
[INFO] [stderr] 90 |         Message::Action(Action::Move { time_to_respond: n }) => {
[INFO] [stderr]    |                                                         ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `action` is never read
[INFO] [stderr]   --> src/handler.rs:97:21
[INFO] [stderr]    |
[INFO] [stderr] 97 |             let mut action = String::new();
[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: unused variable: `en_pos`
[INFO] [stderr]    --> src/handler.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |     let en_pos = &field.enemy_positions;
[INFO] [stderr]     |         ^^^^^^ help: consider prefixing with an underscore: `_en_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bm_pos`
[INFO] [stderr]    --> src/handler.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |     let bm_pos = &field.bomb_positions;
[INFO] [stderr]     |         ^^^^^^ help: consider prefixing with an underscore: `_bm_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sn_pos`
[INFO] [stderr]    --> src/handler.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |     let sn_pos = &field.snippet_positions;
[INFO] [stderr]     |         ^^^^^^ help: consider prefixing with an underscore: `_sn_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player_id`
[INFO] [stderr]    --> src/handler.rs:117:29
[INFO] [stderr]     |
[INFO] [stderr] 117 | fn make_move(field: &Field, player_id: &i32) -> Move {
[INFO] [stderr]     |                             ^^^^^^^^^ help: consider prefixing with an underscore: `_player_id`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/player.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut next_move = Move::new();
[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: method is never used: `character_type`
[INFO] [stderr]   --> src/player.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn character_type(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Bixiette`
[INFO] [stderr]   --> src/player.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Bixiette,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_move`
[INFO] [stderr]   --> src/player.rs:63:1
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn make_move() -> Move {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset_to`
[INFO] [stderr]   --> src/simple_matrix.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | /     pub fn reset_to(&mut self, value: T)
[INFO] [stderr] 21 | |         where T: Copy
[INFO] [stderr] 22 | |     {
[INFO] [stderr] 23 | |         for v in self.m.iter_mut() {
[INFO] [stderr] 24 | |             *v = value;
[INFO] [stderr] 25 | |         }
[INFO] [stderr] 26 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "b44b34aa2896d937e00bd27b14335375cd834d61e83cf604bc468fa99ced706d"`
[INFO] running `"docker" "rm" "-f" "b44b34aa2896d937e00bd27b14335375cd834d61e83cf604bc468fa99ced706d"`
[INFO] [stdout] b44b34aa2896d937e00bd27b14335375cd834d61e83cf604bc468fa99ced706d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nathanjent/ruby-the-ms.-hackman-bot:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4f793530ce40a90748a076a881c915a428bc87edd8f8c63e88486f91a3821b29
[INFO] running `"docker" "start" "-a" "4f793530ce40a90748a076a881c915a428bc87edd8f8c63e88486f91a3821b29"`
[INFO] [stderr]    Compiling ruby_the_ms_hack_man_bot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `BufRead`, `Write`, `self as stdio`
[INFO] [stderr]  --> src/main.rs:9:15
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io::{self as stdio, BufRead, Write};
[INFO] [stderr]   |               ^^^^^^^^^^^^^  ^^^^^^^  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/error.rs:7:19
[INFO] [stderr]   |
[INFO] [stderr] 7 | type BoxAny = Box<Any + Send>;
[INFO] [stderr]   |                   ^^^^^^^^^^ help: use `dyn`: `dyn Any + Send`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:49:32
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn cause(&self) -> Option<&StdError> {
[INFO] [stderr]    |                                ^^^^^^^^ help: use `dyn`: `dyn StdError`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `error::*`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use error::*;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `bot::BotState`
[INFO] [stderr]   --> src/main.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | use bot::BotState;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `handler::*`
[INFO] [stderr]   --> src/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use handler::*;
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `enemy`
[INFO] [stderr]   --> src/field.rs:89:37
[INFO] [stderr]    |
[INFO] [stderr] 89 |                     CellItem::Enemy(enemy) => {
[INFO] [stderr]    |                                     ^^^^^ help: consider prefixing with an underscore: `_enemy`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/field.rs:92:36
[INFO] [stderr]    |
[INFO] [stderr] 92 |                     CellItem::Bomb(n) => {
[INFO] [stderr]    |                                    ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expected_cells`
[INFO] [stderr]    --> src/field.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |         let expected_cells = vec![CellItem::Empty,
[INFO] [stderr]     |             ^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_expected_cells`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `actual_cells`
[INFO] [stderr]    --> src/field.rs:206:13
[INFO] [stderr]     |
[INFO] [stderr] 206 |         let actual_cells = parse_field(field_str);
[INFO] [stderr]     |             ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_actual_cells`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/handler.rs:86:62
[INFO] [stderr]    |
[INFO] [stderr] 86 |         Message::Action(Action::Character { time_to_respond: n }) => {
[INFO] [stderr]    |                                                              ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `n`
[INFO] [stderr]   --> src/handler.rs:90:57
[INFO] [stderr]    |
[INFO] [stderr] 90 |         Message::Action(Action::Move { time_to_respond: n }) => {
[INFO] [stderr]    |                                                         ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `action` is never read
[INFO] [stderr]   --> src/handler.rs:97:21
[INFO] [stderr]    |
[INFO] [stderr] 97 |             let mut action = String::new();
[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: unused variable: `en_pos`
[INFO] [stderr]    --> src/handler.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |     let en_pos = &field.enemy_positions;
[INFO] [stderr]     |         ^^^^^^ help: consider prefixing with an underscore: `_en_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bm_pos`
[INFO] [stderr]    --> src/handler.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |     let bm_pos = &field.bomb_positions;
[INFO] [stderr]     |         ^^^^^^ help: consider prefixing with an underscore: `_bm_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sn_pos`
[INFO] [stderr]    --> src/handler.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |     let sn_pos = &field.snippet_positions;
[INFO] [stderr]     |         ^^^^^^ help: consider prefixing with an underscore: `_sn_pos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player_id`
[INFO] [stderr]    --> src/handler.rs:117:29
[INFO] [stderr]     |
[INFO] [stderr] 117 | fn make_move(field: &Field, player_id: &i32) -> Move {
[INFO] [stderr]     |                             ^^^^^^^^^ help: consider prefixing with an underscore: `_player_id`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/player.rs:64:9
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let mut next_move = Move::new();
[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: struct is never constructed: `BotState`
[INFO] [stderr]  --> src/bot.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct BotState {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Settings`
[INFO] [stderr]   --> src/bot.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub struct Settings {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/bot.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UnintentionalBreak`
[INFO] [stderr]   --> src/error.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     UnintentionalBreak,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PlayerNotFound`
[INFO] [stderr]   --> src/error.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     PlayerNotFound(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Field`
[INFO] [stderr]  --> src/field.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Field {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/field.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn new(width: usize, height: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_point`
[INFO] [stderr]   --> src/field.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     fn get_point(&self, index: usize) -> Point {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `update_field`
[INFO] [stderr]   --> src/field.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn update_field(&mut self, field: Vec<Cell>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_width`
[INFO] [stderr]    --> src/field.rs:107:5
[INFO] [stderr]     |
[INFO] [stderr] 107 |     pub fn set_width(&mut self, width: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_height`
[INFO] [stderr]    --> src/field.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     pub fn set_height(&mut self, height: usize) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `handle_message`
[INFO] [stderr]  --> src/handler.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn handle_message(line: String, bot: &BotState) -> Result<Option<String>> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_move`
[INFO] [stderr]    --> src/handler.rs:117:1
[INFO] [stderr]     |
[INFO] [stderr] 117 | fn make_move(field: &Field, player_id: &i32) -> Move {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Player`
[INFO] [stderr]  --> src/player.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct Player {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/player.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(name: String) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `character_type`
[INFO] [stderr]   --> src/player.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn character_type(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `CharacterType`
[INFO] [stderr]   --> src/player.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | pub enum CharacterType {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Move`
[INFO] [stderr]   --> src/player.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub struct Move {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `MoveType`
[INFO] [stderr]   --> src/player.rs:46:1
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub enum MoveType {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/player.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `make_move`
[INFO] [stderr]   --> src/player.rs:63:1
[INFO] [stderr]    |
[INFO] [stderr] 63 | pub fn make_move() -> Move {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/simple_matrix.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new(width: usize, height: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `reset_to`
[INFO] [stderr]   --> src/simple_matrix.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 | /     pub fn reset_to(&mut self, value: T)
[INFO] [stderr] 21 | |         where T: Copy
[INFO] [stderr] 22 | |     {
[INFO] [stderr] 23 | |         for v in self.m.iter_mut() {
[INFO] [stderr] 24 | |             *v = value;
[INFO] [stderr] 25 | |         }
[INFO] [stderr] 26 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: module `Test` should have a snake case name
[INFO] [stderr]    --> src/field.rs:191:5
[INFO] [stderr]     |
[INFO] [stderr] 191 | mod Test {
[INFO] [stderr]     |     ^^^^ help: convert the identifier to snake case: `test`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `Test` should have a snake case name
[INFO] [stderr]   --> src/simple_matrix.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 | mod Test {
[INFO] [stderr]    |     ^^^^ help: convert the identifier to snake case: `test`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "4f793530ce40a90748a076a881c915a428bc87edd8f8c63e88486f91a3821b29"`
[INFO] running `"docker" "rm" "-f" "4f793530ce40a90748a076a881c915a428bc87edd8f8c63e88486f91a3821b29"`
[INFO] [stdout] 4f793530ce40a90748a076a881c915a428bc87edd8f8c63e88486f91a3821b29
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/nathanjent/ruby-the-ms.-hackman-bot:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] f17d65f26d329dbeba13868a66dcc61d46298c082b606037b31165682c4611cf
[INFO] running `"docker" "start" "-a" "f17d65f26d329dbeba13868a66dcc61d46298c082b606037b31165682c4611cf"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ruby_the_ms_hack_man_bot-d6f4aac3866be87b
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test simple_matrix::Test::position_test ... ok
[INFO] [stdout] test field::Test::parse_field_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f17d65f26d329dbeba13868a66dcc61d46298c082b606037b31165682c4611cf"`
[INFO] running `"docker" "rm" "-f" "f17d65f26d329dbeba13868a66dcc61d46298c082b606037b31165682c4611cf"`
[INFO] [stdout] f17d65f26d329dbeba13868a66dcc61d46298c082b606037b31165682c4611cf