[INFO] cloning repository https://github.com/slightknack/hashlife
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/slightknack/hashlife" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightknack%2Fhashlife", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightknack%2Fhashlife'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 984c65506415f6dc13a8aad3eec2e3703043ecb9
[INFO] checking slightknack/hashlife against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fslightknack%2Fhashlife" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/slightknack/hashlife on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/slightknack/hashlife
[INFO] finished tweaking git repo https://github.com/slightknack/hashlife
[INFO] tweaked toml for git repo https://github.com/slightknack/hashlife written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/slightknack/hashlife already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "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] f12275c8d28602686b8c3ff6d47c1071707fc279c482fbc4c9835c264da2e381
[INFO] running `Command { std: "docker" "start" "-a" "f12275c8d28602686b8c3ff6d47c1071707fc279c482fbc4c9835c264da2e381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f12275c8d28602686b8c3ff6d47c1071707fc279c482fbc4c9835c264da2e381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f12275c8d28602686b8c3ff6d47c1071707fc279c482fbc4c9835c264da2e381", kill_on_drop: false }`
[INFO] [stdout] f12275c8d28602686b8c3ff6d47c1071707fc279c482fbc4c9835c264da2e381
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9238b45aacc9480490c0a217dc0d921b3a6a09d925c765df29153a6bdfc65ee5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9238b45aacc9480490c0a217dc0d921b3a6a09d925c765df29153a6bdfc65ee5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking hashlife v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::convert::From`
[INFO] [stdout]  --> src/world.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::From`
[INFO] [stdout]  --> src/world.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]  --> src/main.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let (mut w, c) = world::World::from_file(Path::new("./glider.txt"));
[INFO] [stdout]   |              ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cell.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |         for i in 0..grid[0].len() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let (mut w, c) = world::World::from_file(Path::new("./glider.txt"));
[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: unused variable: `w`
[INFO] [stdout]  --> src/main.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let (mut w, c) = world::World::from_file(Path::new("./glider.txt"));
[INFO] [stdout]   |              ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/cell.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |         for i in 0..grid[0].len() {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> src/main.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let (mut w, c) = world::World::from_file(Path::new("./glider.txt"));
[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: associated function is never used: `trim`
[INFO] [stdout]    --> src/cell.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn trim(cell: &Rc<Cell>) -> Rc<Cell> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap_macro`
[INFO] [stdout]    --> src/cell.rs:148:12
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub fn unwrap_macro(&self) -> Macro {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `macro_grid`
[INFO] [stdout]    --> src/cell.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 156 |     fn macro_grid(m: Macro, size: usize) -> Vec<Vec<Macro>> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `convolve_grid`
[INFO] [stdout]    --> src/cell.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn convolve_grid(grid: Vec<Vec<Macro>>, world: &mut World) -> Vec<Vec<Rc<Cell>>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_up`
[INFO] [stdout]    --> src/cell.rs:220:8
[INFO] [stdout]     |
[INFO] [stdout] 220 |     fn build_up(grid: Vec<Vec<Rc<Cell>>>, world: &mut World) -> Vec<Vec<Rc<Cell>>> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pad_cell`
[INFO] [stdout]    --> src/cell.rs:237:8
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn pad_cell(macro_cell: Macro, world: &mut World) -> Macro {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `jump`
[INFO] [stdout]    --> src/cell.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn jump(cell: Rc<Cell>, step: usize, world: &mut World) -> Rc<Cell> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dead_of_size`
[INFO] [stdout]    --> src/cell.rs:314:12
[INFO] [stdout]     |
[INFO] [stdout] 314 |     pub fn dead_of_size(size: usize, world: &mut World) -> Rc<Cell> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `trim`
[INFO] [stdout]    --> src/cell.rs:127:12
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn trim(cell: &Rc<Cell>) -> Rc<Cell> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unwrap_macro`
[INFO] [stdout]    --> src/cell.rs:148:12
[INFO] [stdout]     |
[INFO] [stdout] 148 |     pub fn unwrap_macro(&self) -> Macro {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `macro_grid`
[INFO] [stdout]    --> src/cell.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 156 |     fn macro_grid(m: Macro, size: usize) -> Vec<Vec<Macro>> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `convolve_grid`
[INFO] [stdout]    --> src/cell.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn convolve_grid(grid: Vec<Vec<Macro>>, world: &mut World) -> Vec<Vec<Rc<Cell>>> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `build_up`
[INFO] [stdout]    --> src/cell.rs:220:8
[INFO] [stdout]     |
[INFO] [stdout] 220 |     fn build_up(grid: Vec<Vec<Rc<Cell>>>, world: &mut World) -> Vec<Vec<Rc<Cell>>> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pad_cell`
[INFO] [stdout]    --> src/cell.rs:237:8
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn pad_cell(macro_cell: Macro, world: &mut World) -> Macro {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `jump`
[INFO] [stdout]    --> src/cell.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn jump(cell: Rc<Cell>, step: usize, world: &mut World) -> Rc<Cell> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `dead_of_size`
[INFO] [stdout]    --> src/cell.rs:314:12
[INFO] [stdout]     |
[INFO] [stdout] 314 |     pub fn dead_of_size(size: usize, world: &mut World) -> Rc<Cell> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "9238b45aacc9480490c0a217dc0d921b3a6a09d925c765df29153a6bdfc65ee5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9238b45aacc9480490c0a217dc0d921b3a6a09d925c765df29153a6bdfc65ee5", kill_on_drop: false }`
[INFO] [stdout] 9238b45aacc9480490c0a217dc0d921b3a6a09d925c765df29153a6bdfc65ee5