[INFO] cloning repository https://github.com/gtarashev/game-of-life
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gtarashev/game-of-life" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgtarashev%2Fgame-of-life", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgtarashev%2Fgame-of-life'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6506a2ba990512e0fe60606131e71e2e2933099a
[INFO] checking gtarashev/game-of-life against master#2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgtarashev%2Fgame-of-life" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gtarashev/game-of-life on toolchain 2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gtarashev/game-of-life
[INFO] finished tweaking git repo https://github.com/gtarashev/game-of-life
[INFO] tweaked toml for git repo https://github.com/gtarashev/game-of-life written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gtarashev/game-of-life 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" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2629777beb0c826d403aed7a6338757cca12e536c646447a4e79d889d8996035
[INFO] running `Command { std: "docker" "start" "-a" "2629777beb0c826d403aed7a6338757cca12e536c646447a4e79d889d8996035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2629777beb0c826d403aed7a6338757cca12e536c646447a4e79d889d8996035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2629777beb0c826d403aed7a6338757cca12e536c646447a4e79d889d8996035", kill_on_drop: false }`
[INFO] [stdout] 2629777beb0c826d403aed7a6338757cca12e536c646447a4e79d889d8996035
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+2fcf1776b9ccef89993dfe40e9f5c4908e2d2d48" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8188fd60a72962853756a83899b2e8c83d0355c2a2995681ad099d5c1376041
[INFO] running `Command { std: "docker" "start" "-a" "b8188fd60a72962853756a83899b2e8c83d0355c2a2995681ad099d5c1376041", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking termion v4.0.2
[INFO] [stderr]     Checking game-of-life v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `new_text_buffer`, `raw_mode`, and `reset_text_buffer`
[INFO] [stdout]   --> src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | use terminal::{raw_mode, reset_text_buffer, new_text_buffer};
[INFO] [stdout]    |                ^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `new_text_buffer`, `raw_mode`, and `reset_text_buffer`
[INFO] [stdout]   --> src/main.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 | use terminal::{raw_mode, reset_text_buffer, new_text_buffer};
[INFO] [stdout]    |                ^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n` is never read
[INFO] [stdout]   --> src/grid.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut n = 0;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n` is never read
[INFO] [stdout]   --> src/grid.rs:53:13
[INFO] [stdout]    |
[INFO] [stdout] 53 |     let mut n = 0;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/terminal.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         Err(e) => None,
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/terminal.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         Err(e) => None,
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `terminal_y` is never read
[INFO] [stdout]   --> src/main.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut terminal_y = 0;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `terminal_y` is never read
[INFO] [stdout]   --> src/main.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut terminal_y = 0;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `terminal_x` is never read
[INFO] [stdout]   --> src/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut terminal_x = 0;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `terminal_x` is never read
[INFO] [stdout]   --> src/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     let mut terminal_x = 0;
[INFO] [stdout]    |             ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut grid = vec![vec![State::Dead; terminal_x as usize];
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |     let mut grid = vec![vec![State::Dead; terminal_x as usize];
[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: variant `Alive` is never constructed
[INFO] [stdout]  --> src/grid.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum State {
[INFO] [stdout]   |          ----- variant in this enum
[INFO] [stdout] 5 |     Dead,
[INFO] [stdout] 6 |     Alive,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `State` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_n` is never used
[INFO] [stdout]   --> src/grid.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn get_n(grid: &Vec<Vec<State>>, x: isize, y: isize) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `update_state` is never used
[INFO] [stdout]   --> src/grid.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn update_state(grid: &mut Vec<Vec<State>>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `raw_mode` is never used
[INFO] [stdout]  --> src/terminal.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn raw_mode() -> Option<RawTerminal<Stdout>> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_text_buffer` is never used
[INFO] [stdout]   --> src/terminal.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn new_text_buffer() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reset_text_buffer` is never used
[INFO] [stdout]   --> src/terminal.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn reset_text_buffer() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Alive` is never constructed
[INFO] [stdout]  --> src/grid.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum State {
[INFO] [stdout]   |          ----- variant in this enum
[INFO] [stdout] 5 |     Dead,
[INFO] [stdout] 6 |     Alive,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `State` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_n` is never used
[INFO] [stdout]   --> src/grid.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn get_n(grid: &Vec<Vec<State>>, x: isize, y: isize) -> usize {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `update_state` is never used
[INFO] [stdout]   --> src/grid.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn update_state(grid: &mut Vec<Vec<State>>) {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `raw_mode` is never used
[INFO] [stdout]  --> src/terminal.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn raw_mode() -> Option<RawTerminal<Stdout>> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new_text_buffer` is never used
[INFO] [stdout]   --> src/terminal.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn new_text_buffer() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reset_text_buffer` is never used
[INFO] [stdout]   --> src/terminal.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn reset_text_buffer() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "b8188fd60a72962853756a83899b2e8c83d0355c2a2995681ad099d5c1376041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8188fd60a72962853756a83899b2e8c83d0355c2a2995681ad099d5c1376041", kill_on_drop: false }`
[INFO] [stdout] b8188fd60a72962853756a83899b2e8c83d0355c2a2995681ad099d5c1376041