[INFO] cloning repository https://github.com/xenya52/game_2048
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xenya52/game_2048" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxenya52%2Fgame_2048", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxenya52%2Fgame_2048'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7171be49bb6cc8e67d762f496fdfe8e575567bc2
[INFO] testing xenya52/game_2048 against master#9e297bf54d31eb3b30067208ff9af4416945a2ed for pr-125507
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxenya52%2Fgame_2048" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xenya52/game_2048 on toolchain 9e297bf54d31eb3b30067208ff9af4416945a2ed
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e297bf54d31eb3b30067208ff9af4416945a2ed" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xenya52/game_2048
[INFO] finished tweaking git repo https://github.com/xenya52/game_2048
[INFO] tweaked toml for git repo https://github.com/xenya52/game_2048 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/xenya52/game_2048 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" "+9e297bf54d31eb3b30067208ff9af4416945a2ed" "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
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] testing xenya52/game_2048 against try#61a9ac64344e91d62f5496627ff363d177f9daab for pr-125507
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxenya52%2Fgame_2048" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xenya52/game_2048 on toolchain 61a9ac64344e91d62f5496627ff363d177f9daab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xenya52/game_2048
[INFO] finished tweaking git repo https://github.com/xenya52/game_2048
[INFO] tweaked toml for git repo https://github.com/xenya52/game_2048 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/xenya52/game_2048 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" "+61a9ac64344e91d62f5496627ff363d177f9daab" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing xenya52/game_2048 against try#61a9ac64344e91d62f5496627ff363d177f9daab for pr-125507
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxenya52%2Fgame_2048" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xenya52/game_2048 on toolchain 61a9ac64344e91d62f5496627ff363d177f9daab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xenya52/game_2048
[INFO] finished tweaking git repo https://github.com/xenya52/game_2048
[INFO] tweaked toml for git repo https://github.com/xenya52/game_2048 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/xenya52/game_2048 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" "+61a9ac64344e91d62f5496627ff363d177f9daab" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing xenya52/game_2048 against try#61a9ac64344e91d62f5496627ff363d177f9daab for pr-125507
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxenya52%2Fgame_2048" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xenya52/game_2048 on toolchain 61a9ac64344e91d62f5496627ff363d177f9daab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xenya52/game_2048
[INFO] finished tweaking git repo https://github.com/xenya52/game_2048
[INFO] tweaked toml for git repo https://github.com/xenya52/game_2048 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/xenya52/game_2048 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" "+61a9ac64344e91d62f5496627ff363d177f9daab" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing xenya52/game_2048 against try#61a9ac64344e91d62f5496627ff363d177f9daab for pr-125507
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxenya52%2Fgame_2048" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xenya52/game_2048 on toolchain 61a9ac64344e91d62f5496627ff363d177f9daab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/xenya52/game_2048
[INFO] finished tweaking git repo https://github.com/xenya52/game_2048
[INFO] tweaked toml for git repo https://github.com/xenya52/game_2048 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/xenya52/game_2048 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" "+61a9ac64344e91d62f5496627ff363d177f9daab" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded colorized v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b40859ac548330a5b130efc01165444eee7affb6416cf466e526535baa30bc78
[INFO] running `Command { std: "docker" "start" "-a" "b40859ac548330a5b130efc01165444eee7affb6416cf466e526535baa30bc78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b40859ac548330a5b130efc01165444eee7affb6416cf466e526535baa30bc78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b40859ac548330a5b130efc01165444eee7affb6416cf466e526535baa30bc78", kill_on_drop: false }`
[INFO] [stdout] b40859ac548330a5b130efc01165444eee7affb6416cf466e526535baa30bc78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 785af92d3c3359a314f1cad1850c409ccd240017cdb8d0a261707d2a7f3f89e5
[INFO] running `Command { std: "docker" "start" "-a" "785af92d3c3359a314f1cad1850c409ccd240017cdb8d0a261707d2a7f3f89e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]    Compiling smallvec v1.11.2
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling log v0.4.20
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling colorized v1.0.0
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling mio v0.8.10
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling signal-hook-mio v0.2.3
[INFO] [stderr]    Compiling crossterm v0.26.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling game_2048 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `f32::MAX_10_EXP`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{vec, f32::MAX_10_EXP};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExecutableCommand`, `KeyModifiers`, `SetSize`, and `self`
[INFO] [stdout]  --> src/main.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 |     terminal::{self, SetSize},
[INFO] [stdout]   |                ^^^^  ^^^^^^^
[INFO] [stdout] 8 |     ExecutableCommand,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9 |     event::{self, KeyCode, KeyEvent, KeyModifiers, read},
[INFO] [stdout]   |                                      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/main.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:131:10
[INFO] [stdout]     |
[INFO] [stdout] 131 |     for (i,row) in board.iter().enumerate() {
[INFO] [stdout]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/main.rs:132:14
[INFO] [stdout]     |
[INFO] [stdout] 132 |         for (j, row) in row.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `modifiers`
[INFO] [stdout]    --> src/main.rs:157:51
[INFO] [stdout]     |
[INFO] [stdout] 157 |         if let event::Event::Key(KeyEvent { code, modifiers, .. }) = read()? {
[INFO] [stdout]     |                                                   ^^^^^^^^^ help: try ignoring the field: `modifiers: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:318:9
[INFO] [stdout]     |
[INFO] [stdout] 318 |         game_loop(&mut board);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let _ = game_loop(&mut board);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.74s
[INFO] running `Command { std: "docker" "inspect" "785af92d3c3359a314f1cad1850c409ccd240017cdb8d0a261707d2a7f3f89e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "785af92d3c3359a314f1cad1850c409ccd240017cdb8d0a261707d2a7f3f89e5", kill_on_drop: false }`
[INFO] [stdout] 785af92d3c3359a314f1cad1850c409ccd240017cdb8d0a261707d2a7f3f89e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b53d8bf156f7cfc344eb0aadfb064ee3730a51da398ae5b8879c87c1ca3692f6
[INFO] running `Command { std: "docker" "start" "-a" "b53d8bf156f7cfc344eb0aadfb064ee3730a51da398ae5b8879c87c1ca3692f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling game_2048 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `f32::MAX_10_EXP`
[INFO] [stdout]  --> src/main.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{vec, f32::MAX_10_EXP};
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ExecutableCommand`, `KeyModifiers`, `SetSize`, and `self`
[INFO] [stdout]  --> src/main.rs:7:16
[INFO] [stdout]   |
[INFO] [stdout] 7 |     terminal::{self, SetSize},
[INFO] [stdout]   |                ^^^^  ^^^^^^^
[INFO] [stdout] 8 |     ExecutableCommand,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9 |     event::{self, KeyCode, KeyEvent, KeyModifiers, read},
[INFO] [stdout]   |                                      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]  --> src/main.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::{self, Write};
[INFO] [stdout]   |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:131:10
[INFO] [stdout]     |
[INFO] [stdout] 131 |     for (i,row) in board.iter().enumerate() {
[INFO] [stdout]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `j`
[INFO] [stdout]    --> src/main.rs:132:14
[INFO] [stdout]     |
[INFO] [stdout] 132 |         for (j, row) in row.iter().enumerate() {
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `modifiers`
[INFO] [stdout]    --> src/main.rs:157:51
[INFO] [stdout]     |
[INFO] [stdout] 157 |         if let event::Event::Key(KeyEvent { code, modifiers, .. }) = read()? {
[INFO] [stdout]     |                                                   ^^^^^^^^^ help: try ignoring the field: `modifiers: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:318:9
[INFO] [stdout]     |
[INFO] [stdout] 318 |         game_loop(&mut board);
[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)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let _ = game_loop(&mut board);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "b53d8bf156f7cfc344eb0aadfb064ee3730a51da398ae5b8879c87c1ca3692f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b53d8bf156f7cfc344eb0aadfb064ee3730a51da398ae5b8879c87c1ca3692f6", kill_on_drop: false }`
[INFO] [stdout] b53d8bf156f7cfc344eb0aadfb064ee3730a51da398ae5b8879c87c1ca3692f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+61a9ac64344e91d62f5496627ff363d177f9daab" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0c6691c5e76e924846651d150cf300c4d24a095ed949d8f5e17c52f9d0522d69
[INFO] running `Command { std: "docker" "start" "-a" "0c6691c5e76e924846651d150cf300c4d24a095ed949d8f5e17c52f9d0522d69", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `f32::MAX_10_EXP`
[INFO] [stderr]  --> src/main.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{vec, f32::MAX_10_EXP};
[INFO] [stderr]   |                ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ExecutableCommand`, `KeyModifiers`, `SetSize`, and `self`
[INFO] [stderr]  --> src/main.rs:7:16
[INFO] [stderr]   |
[INFO] [stderr] 7 |     terminal::{self, SetSize},
[INFO] [stderr]   |                ^^^^  ^^^^^^^
[INFO] [stderr] 8 |     ExecutableCommand,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 9 |     event::{self, KeyCode, KeyEvent, KeyModifiers, read},
[INFO] [stderr]   |                                      ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/main.rs:4:21
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{self, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:131:10
[INFO] [stderr]     |
[INFO] [stderr] 131 |     for (i,row) in board.iter().enumerate() {
[INFO] [stderr]     |          ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `j`
[INFO] [stderr]    --> src/main.rs:132:14
[INFO] [stderr]     |
[INFO] [stderr] 132 |         for (j, row) in row.iter().enumerate() {
[INFO] [stderr]     |              ^ help: if this is intentional, prefix it with an underscore: `_j`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `modifiers`
[INFO] [stderr]    --> src/main.rs:157:51
[INFO] [stderr]     |
[INFO] [stderr] 157 |         if let event::Event::Key(KeyEvent { code, modifiers, .. }) = read()? {
[INFO] [stderr]     |                                                   ^^^^^^^^^ help: try ignoring the field: `modifiers: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:318:9
[INFO] [stderr]     |
[INFO] [stderr] 318 |         game_loop(&mut board);
[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)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 318 |         let _ = game_loop(&mut board);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `game_2048` (bin "game_2048" test) generated 7 warnings (run `cargo fix --bin "game_2048" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/game_2048-de1d5e61536eab91)
[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" "0c6691c5e76e924846651d150cf300c4d24a095ed949d8f5e17c52f9d0522d69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c6691c5e76e924846651d150cf300c4d24a095ed949d8f5e17c52f9d0522d69", kill_on_drop: false }`
[INFO] [stdout] 0c6691c5e76e924846651d150cf300c4d24a095ed949d8f5e17c52f9d0522d69