[INFO] cloning repository https://github.com/NicEastvillage/MergeBot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NicEastvillage/MergeBot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicEastvillage%2FMergeBot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicEastvillage%2FMergeBot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c2be66202e823ad2b8a0b0cc432c08a671afc5b1
[INFO] testing NicEastvillage/MergeBot against try#16fbf98f22730e073c09e7b03f0eafb87a295545 for pr-145628-retry-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicEastvillage%2FMergeBot" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/NicEastvillage/MergeBot
[INFO] finished tweaking git repo https://github.com/NicEastvillage/MergeBot
[INFO] tweaked toml for git repo https://github.com/NicEastvillage/MergeBot written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/NicEastvillage/MergeBot on toolchain 16fbf98f22730e073c09e7b03f0eafb87a295545
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/NicEastvillage/MergeBot 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" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6beb7345a8108bc72c47dbb8ee13a71d990e4bdf3dc790baad249d024b0d094c
[INFO] running `Command { std: "docker" "start" "-a" "6beb7345a8108bc72c47dbb8ee13a71d990e4bdf3dc790baad249d024b0d094c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6beb7345a8108bc72c47dbb8ee13a71d990e4bdf3dc790baad249d024b0d094c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6beb7345a8108bc72c47dbb8ee13a71d990e4bdf3dc790baad249d024b0d094c", kill_on_drop: false }`
[INFO] [stdout] 6beb7345a8108bc72c47dbb8ee13a71d990e4bdf3dc790baad249d024b0d094c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6527fea34ca0ab3da53b8d54621bbdec4dc0705c58f412928ff0fdf48bb96804
[INFO] running `Command { std: "docker" "start" "-a" "6527fea34ca0ab3da53b8d54621bbdec4dc0705c58f412928ff0fdf48bb96804", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling serde_json v1.0.55
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling MergeBot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::hint::unreachable_unchecked`
[INFO] [stdout]  --> src/boardex.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::hint::unreachable_unchecked;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]  --> src/player.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::TcpStream`
[INFO] [stdout]  --> src/messages.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`, and `Result`
[INFO] [stdout]  --> src/messages.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufReader, BufRead, Result};
[INFO] [stdout]   |               ^^^^^^^^^  ^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Action` and `Board`
[INFO] [stdout]  --> src/main.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::game::{Board, Action};
[INFO] [stdout]   |                   ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::human::Human`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::human::Human;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BoardExplorer` and `perft`
[INFO] [stdout]   --> src/main.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::boardex::{perft, BoardExplorer};
[INFO] [stdout]    |                      ^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `play_online`
[INFO] [stdout]   --> src/main.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::player::{play_online, play_duel};
[INFO] [stdout]    |                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::read_to_string`
[INFO] [stdout]  --> src/bot.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs::read_to_string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Display`
[INFO] [stdout]  --> src/game.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::game::Status::HitTurnLimit`
[INFO] [stdout]  --> src/game.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::game::Status::HitTurnLimit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/boardex.rs:58:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |             let b = explorer.board.clone();
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end_msg`
[INFO] [stdout]   --> src/player.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 Message::End(end_msg) => return Ok(()),
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Human` is never constructed
[INFO] [stdout]  --> src/human.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Human {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/human.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Human {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn new() -> Human {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `perft` is never used
[INFO] [stdout]   --> src/boardex.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn perft(explorer: &mut BoardExplorer, depth: i32) -> u64 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_online` is never used
[INFO] [stdout]   --> src/player.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn play_online<F>(address: &str, factory: F) -> Result<()>
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `receive` is never used
[INFO] [stdout]   --> src/player.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn receive<R: BufRead>(reader: &mut R) -> Result<Message> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `send` is never used
[INFO] [stdout]   --> src/player.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn send<W: Write>(writer: &mut W, msg: &str) -> Result<()> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]  --> src/messages.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum Message {
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StartMsg` is never constructed
[INFO] [stdout]   --> src/messages.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct StartMsg {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MoveMsg` is never constructed
[INFO] [stdout]   --> src/messages.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct MoveMsg {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ErrorMsg` is never constructed
[INFO] [stdout]   --> src/messages.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct ErrorMsg {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EndMsg` is never constructed
[INFO] [stdout]   --> src/messages.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct EndMsg {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from` and `to_string` are never used
[INFO] [stdout]    --> src/game.rs:249:12
[INFO] [stdout]     |
[INFO] [stdout] 248 | impl Action {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 249 |     pub fn from(action: &str) -> Result<Action, ParseIntError> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 254 |     pub fn to_string(self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/human.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         self.board.perform(action);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let _ = self.board.perform(action);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/boardex.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         self.board.perform(action);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let _ = self.board.perform(action);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/player.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     send(&mut writer, "ready\n");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let _ = send(&mut writer, "ready\n");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/player.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |                         send(&mut writer, &action.to_string());
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 43 |                         let _ = send(&mut writer, &action.to_string());
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/player.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         board.perform(&action);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let _ = board.perform(&action);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bot.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         self.board.perform(action);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let _ = self.board.perform(action);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/game.rs:213:17
[INFO] [stdout]     |
[INFO] [stdout] 213 |                 write!(f, "{} ", c);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 213 |                 let _ = write!(f, "{} ", c);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/game.rs:215:13
[INFO] [stdout]     |
[INFO] [stdout] 215 |             write!(f, "\n");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 215 |             let _ = write!(f, "\n");
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.41s
[INFO] running `Command { std: "docker" "inspect" "6527fea34ca0ab3da53b8d54621bbdec4dc0705c58f412928ff0fdf48bb96804", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6527fea34ca0ab3da53b8d54621bbdec4dc0705c58f412928ff0fdf48bb96804", kill_on_drop: false }`
[INFO] [stdout] 6527fea34ca0ab3da53b8d54621bbdec4dc0705c58f412928ff0fdf48bb96804
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 088358509f780bb4588881003fbec8b7bdedee62273daaedca45938a077d3da2
[INFO] running `Command { std: "docker" "start" "-a" "088358509f780bb4588881003fbec8b7bdedee62273daaedca45938a077d3da2", kill_on_drop: false }`
[INFO] [stderr]    Compiling MergeBot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::hint::unreachable_unchecked`
[INFO] [stdout]  --> src/boardex.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::hint::unreachable_unchecked;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stdout]  --> src/player.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::borrow::BorrowMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::net::TcpStream`
[INFO] [stdout]  --> src/messages.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`, and `Result`
[INFO] [stdout]  --> src/messages.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufReader, BufRead, Result};
[INFO] [stdout]   |               ^^^^^^^^^  ^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Action` and `Board`
[INFO] [stdout]  --> src/main.rs:7:19
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::game::{Board, Action};
[INFO] [stdout]   |                   ^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::human::Human`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::human::Human;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time::Instant`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::time::Instant;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BoardExplorer` and `perft`
[INFO] [stdout]   --> src/main.rs:10:22
[INFO] [stdout]    |
[INFO] [stdout] 10 | use crate::boardex::{perft, BoardExplorer};
[INFO] [stdout]    |                      ^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `play_online`
[INFO] [stdout]   --> src/main.rs:11:21
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::player::{play_online, play_duel};
[INFO] [stdout]    |                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::read_to_string`
[INFO] [stdout]  --> src/bot.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::fs::read_to_string;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Display`
[INFO] [stdout]  --> src/game.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::game::Status::HitTurnLimit`
[INFO] [stdout]  --> src/game.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::game::Status::HitTurnLimit;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/boardex.rs:58:17
[INFO] [stdout]    |
[INFO] [stdout] 58 |             let b = explorer.board.clone();
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end_msg`
[INFO] [stdout]   --> src/player.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 Message::End(end_msg) => return Ok(()),
[INFO] [stdout]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Human` is never constructed
[INFO] [stdout]  --> src/human.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Human {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/human.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout]  9 | impl Human {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn new() -> Human {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `perft` is never used
[INFO] [stdout]   --> src/boardex.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn perft(explorer: &mut BoardExplorer, depth: i32) -> u64 {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_online` is never used
[INFO] [stdout]   --> src/player.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn play_online<F>(address: &str, factory: F) -> Result<()>
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `receive` is never used
[INFO] [stdout]   --> src/player.rs:58:4
[INFO] [stdout]    |
[INFO] [stdout] 58 | fn receive<R: BufRead>(reader: &mut R) -> Result<Message> {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `send` is never used
[INFO] [stdout]   --> src/player.rs:64:4
[INFO] [stdout]    |
[INFO] [stdout] 64 | fn send<W: Write>(writer: &mut W, msg: &str) -> Result<()> {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Message` is never used
[INFO] [stdout]  --> src/messages.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum Message {
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StartMsg` is never constructed
[INFO] [stdout]   --> src/messages.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct StartMsg {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MoveMsg` is never constructed
[INFO] [stdout]   --> src/messages.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct MoveMsg {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ErrorMsg` is never constructed
[INFO] [stdout]   --> src/messages.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct ErrorMsg {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EndMsg` is never constructed
[INFO] [stdout]   --> src/messages.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct EndMsg {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from` and `to_string` are never used
[INFO] [stdout]    --> src/game.rs:249:12
[INFO] [stdout]     |
[INFO] [stdout] 248 | impl Action {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 249 |     pub fn from(action: &str) -> Result<Action, ParseIntError> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 254 |     pub fn to_string(self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/human.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         self.board.perform(action);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let _ = self.board.perform(action);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/boardex.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         self.board.perform(action);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let _ = self.board.perform(action);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/player.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     send(&mut writer, "ready\n");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let _ = send(&mut writer, "ready\n");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/player.rs:43:25
[INFO] [stdout]    |
[INFO] [stdout] 43 |                         send(&mut writer, &action.to_string());
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 43 |                         let _ = send(&mut writer, &action.to_string());
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/player.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 |         board.perform(&action);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 82 |         let _ = board.perform(&action);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/bot.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |         self.board.perform(action);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let _ = self.board.perform(action);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/game.rs:213:17
[INFO] [stdout]     |
[INFO] [stdout] 213 |                 write!(f, "{} ", c);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 213 |                 let _ = write!(f, "{} ", c);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/game.rs:215:13
[INFO] [stdout]     |
[INFO] [stdout] 215 |             write!(f, "\n");
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 215 |             let _ = write!(f, "\n");
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "088358509f780bb4588881003fbec8b7bdedee62273daaedca45938a077d3da2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "088358509f780bb4588881003fbec8b7bdedee62273daaedca45938a077d3da2", kill_on_drop: false }`
[INFO] [stdout] 088358509f780bb4588881003fbec8b7bdedee62273daaedca45938a077d3da2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e56d932c9e162b2889bd762391c9484285224289d405db6f7f880f476322468f
[INFO] running `Command { std: "docker" "start" "-a" "e56d932c9e162b2889bd762391c9484285224289d405db6f7f880f476322468f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::hint::unreachable_unchecked`
[INFO] [stderr]  --> src/boardex.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::hint::unreachable_unchecked;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::BorrowMut`
[INFO] [stderr]  --> src/player.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::borrow::BorrowMut;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::net::TcpStream`
[INFO] [stderr]  --> src/messages.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::net::TcpStream;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BufRead`, `BufReader`, and `Result`
[INFO] [stderr]  --> src/messages.rs:3:15
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::io::{BufReader, BufRead, Result};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Action` and `Board`
[INFO] [stderr]  --> src/main.rs:7:19
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::game::{Board, Action};
[INFO] [stderr]   |                   ^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::human::Human`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::human::Human;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time::Instant`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::time::Instant;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BoardExplorer` and `perft`
[INFO] [stderr]   --> src/main.rs:10:22
[INFO] [stderr]    |
[INFO] [stderr] 10 | use crate::boardex::{perft, BoardExplorer};
[INFO] [stderr]    |                      ^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `play_online`
[INFO] [stderr]   --> src/main.rs:11:21
[INFO] [stderr]    |
[INFO] [stderr] 11 | use crate::player::{play_online, play_duel};
[INFO] [stderr]    |                     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::read_to_string`
[INFO] [stderr]  --> src/bot.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::fs::read_to_string;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Display`
[INFO] [stderr]  --> src/game.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::path::Display;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::game::Status::HitTurnLimit`
[INFO] [stderr]  --> src/game.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::game::Status::HitTurnLimit;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/boardex.rs:58:17
[INFO] [stderr]    |
[INFO] [stderr] 58 |             let b = explorer.board.clone();
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `end_msg`
[INFO] [stderr]   --> src/player.rs:38:30
[INFO] [stderr]    |
[INFO] [stderr] 38 |                 Message::End(end_msg) => return Ok(()),
[INFO] [stderr]    |                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_msg`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Human` is never constructed
[INFO] [stderr]  --> src/human.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct Human {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/human.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr]  9 | impl Human {
[INFO] [stderr]    | ---------- associated function in this implementation
[INFO] [stderr] 10 |     pub fn new() -> Human {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `perft` is never used
[INFO] [stderr]   --> src/boardex.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub fn perft(explorer: &mut BoardExplorer, depth: i32) -> u64 {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `play_online` is never used
[INFO] [stderr]   --> src/player.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn play_online<F>(address: &str, factory: F) -> Result<()>
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `receive` is never used
[INFO] [stderr]   --> src/player.rs:58:4
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn receive<R: BufRead>(reader: &mut R) -> Result<Message> {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `send` is never used
[INFO] [stderr]   --> src/player.rs:64:4
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn send<W: Write>(writer: &mut W, msg: &str) -> Result<()> {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Message` is never used
[INFO] [stderr]  --> src/messages.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub enum Message {
[INFO] [stderr]   |          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `StartMsg` is never constructed
[INFO] [stderr]   --> src/messages.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub struct StartMsg {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MoveMsg` is never constructed
[INFO] [stderr]   --> src/messages.rs:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub struct MoveMsg {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ErrorMsg` is never constructed
[INFO] [stderr]   --> src/messages.rs:37:12
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub struct ErrorMsg {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `EndMsg` is never constructed
[INFO] [stderr]   --> src/messages.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub struct EndMsg {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `from` and `to_string` are never used
[INFO] [stderr]    --> src/game.rs:249:12
[INFO] [stderr]     |
[INFO] [stderr] 248 | impl Action {
[INFO] [stderr]     | ----------- associated items in this implementation
[INFO] [stderr] 249 |     pub fn from(action: &str) -> Result<Action, ParseIntError> {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 254 |     pub fn to_string(self) -> String {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/human.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |         self.board.perform(action);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 31 |         let _ = self.board.perform(action);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/boardex.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |         self.board.perform(action);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let _ = self.board.perform(action);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/player.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     send(&mut writer, "ready\n");
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let _ = send(&mut writer, "ready\n");
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/player.rs:43:25
[INFO] [stderr]    |
[INFO] [stderr] 43 |                         send(&mut writer, &action.to_string());
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 43 |                         let _ = send(&mut writer, &action.to_string());
[INFO] [stderr]    |                         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/player.rs:82:9
[INFO] [stderr]    |
[INFO] [stderr] 82 |         board.perform(&action);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 82 |         let _ = board.perform(&action);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/bot.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |         self.board.perform(action);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 53 |         let _ = self.board.perform(action);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/game.rs:213:17
[INFO] [stderr]     |
[INFO] [stderr] 213 |                 write!(f, "{} ", c);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 213 |                 let _ = write!(f, "{} ", c);
[INFO] [stderr]     |                 +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/game.rs:215:13
[INFO] [stderr]     |
[INFO] [stderr] 215 |             write!(f, "\n");
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 215 |             let _ = write!(f, "\n");
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `MergeBot` (bin "MergeBot" test) generated 34 warnings (run `cargo fix --bin "MergeBot" --tests` to apply 12 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/MergeBot-28abd786e2ca666a)
[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" "e56d932c9e162b2889bd762391c9484285224289d405db6f7f880f476322468f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e56d932c9e162b2889bd762391c9484285224289d405db6f7f880f476322468f", kill_on_drop: false }`
[INFO] [stdout] e56d932c9e162b2889bd762391c9484285224289d405db6f7f880f476322468f