[INFO] cloning repository https://github.com/Sleepdealr/Connect4-AI
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sleepdealr/Connect4-AI" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSleepdealr%2FConnect4-AI", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSleepdealr%2FConnect4-AI'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b78f85d9982ba846a1b3b7b6fbcee89269ce40ff
[INFO] checking Sleepdealr/Connect4-AI against master#c5fbcd35a8217a17f6b63a22217ace06cf8f5f02 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSleepdealr%2FConnect4-AI" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Sleepdealr/Connect4-AI on toolchain c5fbcd35a8217a17f6b63a22217ace06cf8f5f02
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Sleepdealr/Connect4-AI
[INFO] finished tweaking git repo https://github.com/Sleepdealr/Connect4-AI
[INFO] tweaked toml for git repo https://github.com/Sleepdealr/Connect4-AI written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Sleepdealr/Connect4-AI already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d7d09107de8bd6002bd6e56ce91bc898c7261e42cce8a54dec4b8cd21567ca8
[INFO] running `Command { std: "docker" "start" "-a" "3d7d09107de8bd6002bd6e56ce91bc898c7261e42cce8a54dec4b8cd21567ca8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d7d09107de8bd6002bd6e56ce91bc898c7261e42cce8a54dec4b8cd21567ca8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d7d09107de8bd6002bd6e56ce91bc898c7261e42cce8a54dec4b8cd21567ca8", kill_on_drop: false }`
[INFO] [stdout] 3d7d09107de8bd6002bd6e56ce91bc898c7261e42cce8a54dec4b8cd21567ca8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+c5fbcd35a8217a17f6b63a22217ace06cf8f5f02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c33dc85567445e914ca179029c7e6d2e5916015b82cddde8c0267b8fab81e7ea
[INFO] running `Command { std: "docker" "start" "-a" "c33dc85567445e914ca179029c7e6d2e5916015b82cddde8c0267b8fab81e7ea", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking signal-hook v0.1.17
[INFO] [stderr]     Checking crossterm v0.18.2
[INFO] [stderr]     Checking connect4_ai_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `ExecutableCommand`, `Result`, `cursor`
[INFO] [stdout]  --> src/cli.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     cursor, ExecutableCommand,
[INFO] [stdout]   |     ^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     QueueableCommand, Result, style::{self, Colorize},
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/cli.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 |     for (index, value) in board.iter().rev().enumerate() {
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/cli.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         for n in 1..(3*COLS){
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/cli.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (index, value) in value.iter().enumerate() {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/cli.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     for n in 1..(3*COLS){
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/cli.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn gameloop(board: &[&[u8]]){
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut board = [[0u8; COLS]; ROWS];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gameloop`
[INFO] [stdout]   --> src/cli.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn gameloop(board: &[&[u8]]){
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cli.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             stdout.queue(style::Print("|"));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cli.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 | /                     stdout
[INFO] [stdout] 23 | |                         .queue(style::PrintStyledContent("█".black()));
[INFO] [stdout]    | |_______________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cli.rs:27:21
[INFO] [stdout]    |
[INFO] [stdout] 27 | /                     stdout
[INFO] [stdout] 28 | |                         .queue(style::PrintStyledContent("█".yellow()));
[INFO] [stdout]    | |________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cli.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 | /                     stdout
[INFO] [stdout] 32 | |                         .queue(style::PrintStyledContent("█".red()));
[INFO] [stdout]    | |_____________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cli.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             stdout.queue(style::Print("|"));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExecutableCommand`, `Result`, `cursor`
[INFO] [stdout]  --> src/cli.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     cursor, ExecutableCommand,
[INFO] [stdout]   |     ^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6 |     QueueableCommand, Result, style::{self, Colorize},
[INFO] [stdout]   |                       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/cli.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 |     for (index, value) in board.iter().rev().enumerate() {
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/cli.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |         for n in 1..(3*COLS){
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/cli.rs:18:14
[INFO] [stdout]    |
[INFO] [stdout] 18 |         for (index, value) in value.iter().enumerate() {
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/cli.rs:43:9
[INFO] [stdout]    |
[INFO] [stdout] 43 |     for n in 1..(3*COLS){
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]   --> src/cli.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn gameloop(board: &[&[u8]]){
[INFO] [stdout]    |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut board = [[0u8; COLS]; ROWS];
[INFO] [stdout]    |         ----^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gameloop`
[INFO] [stdout]   --> src/cli.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn gameloop(board: &[&[u8]]){
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cli.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |             stdout.queue(style::Print("|"));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cli.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 | /                     stdout
[INFO] [stdout] 23 | |                         .queue(style::PrintStyledContent("█".black()));
[INFO] [stdout]    | |_______________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cli.rs:27:21
[INFO] [stdout]    |
[INFO] [stdout] 27 | /                     stdout
[INFO] [stdout] 28 | |                         .queue(style::PrintStyledContent("█".yellow()));
[INFO] [stdout]    | |________________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cli.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 | /                     stdout
[INFO] [stdout] 32 | |                         .queue(style::PrintStyledContent("█".red()));
[INFO] [stdout]    | |_____________________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cli.rs:38:13
[INFO] [stdout]    |
[INFO] [stdout] 38 |             stdout.queue(style::Print("|"));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.74s
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c33dc85567445e914ca179029c7e6d2e5916015b82cddde8c0267b8fab81e7ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c33dc85567445e914ca179029c7e6d2e5916015b82cddde8c0267b8fab81e7ea", kill_on_drop: false }`
[INFO] [stdout] c33dc85567445e914ca179029c7e6d2e5916015b82cddde8c0267b8fab81e7ea