[INFO] cloning repository https://github.com/peterjoel/gol
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/peterjoel/gol" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterjoel%2Fgol", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterjoel%2Fgol'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a2a40f37e802bf076e211057201f09e65c04c67a
[INFO] checking peterjoel/gol against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpeterjoel%2Fgol" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/peterjoel/gol on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/peterjoel/gol
[INFO] finished tweaking git repo https://github.com/peterjoel/gol
[INFO] tweaked toml for git repo https://github.com/peterjoel/gol written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/peterjoel/gol already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustty v0.1.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 19a7d823ada976dc9e15f3a7c6d670827922561a22ebb32df7277ed39f219a46
[INFO] running `Command { std: "docker" "start" "-a" "19a7d823ada976dc9e15f3a7c6d670827922561a22ebb32df7277ed39f219a46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19a7d823ada976dc9e15f3a7c6d670827922561a22ebb32df7277ed39f219a46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19a7d823ada976dc9e15f3a7c6d670827922561a22ebb32df7277ed39f219a46", kill_on_drop: false }`
[INFO] [stdout] 19a7d823ada976dc9e15f3a7c6d670827922561a22ebb32df7277ed39f219a46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f3a9842caa36f803c5f40aec35c011bc8386f1e27feb71becc36a413a16efdea
[INFO] running `Command { std: "docker" "start" "-a" "f3a9842caa36f803c5f40aec35c011bc8386f1e27feb71becc36a413a16efdea", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.3.0
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking term v0.4.6
[INFO] [stderr]     Checking rand_core v0.2.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking tempfile v3.0.4
[INFO] [stderr]     Checking gag v0.1.10
[INFO] [stderr]     Checking rustty v0.1.12
[INFO] [stderr]     Checking gol v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/backend/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new(msg: String) -> Error {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MoveCursorTo`
[INFO] [stdout]  --> src/editor.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     MoveCursorTo { x: usize, y: usize },
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ToggleCellAt`
[INFO] [stdout]  --> src/editor.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     ToggleCellAt { x: usize, y: usize },
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `KillCellAt`
[INFO] [stdout]   --> src/editor.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     KillCellAt { x: usize, y: usize },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AddCellAt`
[INFO] [stdout]   --> src/editor.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     AddCellAt { x: usize, y: usize },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_from_grid`
[INFO] [stdout]   --> src/game.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new_from_grid(grid: Grid<u8>, wrapped: bool) -> Gol {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init`
[INFO] [stdout]   --> src/game.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn init(&mut self, cells: &[(usize, usize)]) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_data`
[INFO] [stdout]   --> src/grid.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn with_data(width: usize, height: usize, data: Vec<T>) -> Grid<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_ref`
[INFO] [stdout]   --> src/grid.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn get_ref(&self, x: usize, y: usize) -> &T {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/backend/mod.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn new(msg: String) -> Error {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `MoveCursorTo`
[INFO] [stdout]  --> src/editor.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     MoveCursorTo { x: usize, y: usize },
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ToggleCellAt`
[INFO] [stdout]  --> src/editor.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     ToggleCellAt { x: usize, y: usize },
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `KillCellAt`
[INFO] [stdout]   --> src/editor.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     KillCellAt { x: usize, y: usize },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `AddCellAt`
[INFO] [stdout]   --> src/editor.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     AddCellAt { x: usize, y: usize },
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_from_grid`
[INFO] [stdout]   --> src/game.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn new_from_grid(grid: Grid<u8>, wrapped: bool) -> Gol {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init`
[INFO] [stdout]   --> src/game.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn init(&mut self, cells: &[(usize, usize)]) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_data`
[INFO] [stdout]   --> src/grid.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn with_data(width: usize, height: usize, data: Vec<T>) -> Grid<T> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_ref`
[INFO] [stdout]   --> src/grid.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn get_ref(&self, x: usize, y: usize) -> &T {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.00s
[INFO] running `Command { std: "docker" "inspect" "f3a9842caa36f803c5f40aec35c011bc8386f1e27feb71becc36a413a16efdea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3a9842caa36f803c5f40aec35c011bc8386f1e27feb71becc36a413a16efdea", kill_on_drop: false }`
[INFO] [stdout] f3a9842caa36f803c5f40aec35c011bc8386f1e27feb71becc36a413a16efdea