[INFO] cloning repository https://github.com/canufeel/maze
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/canufeel/maze" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcanufeel%2Fmaze", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcanufeel%2Fmaze'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9ddff80d724235f24234f7182c6297b8f1995f7
[INFO] testing canufeel/maze against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcanufeel%2Fmaze" "/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/canufeel/maze on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/canufeel/maze
[INFO] finished tweaking git repo https://github.com/canufeel/maze
[INFO] tweaked toml for git repo https://github.com/canufeel/maze written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/canufeel/maze already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.69
[INFO] [stderr]   Downloaded syn v1.0.18
[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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] e25e71d34a901d47e9d0177c711c6850c78ce46b08f56d4225250148a13259df
[INFO] running `Command { std: "docker" "start" "-a" "e25e71d34a901d47e9d0177c711c6850c78ce46b08f56d4225250148a13259df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e25e71d34a901d47e9d0177c711c6850c78ce46b08f56d4225250148a13259df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e25e71d34a901d47e9d0177c711c6850c78ce46b08f56d4225250148a13259df", kill_on_drop: false }`
[INFO] [stdout] e25e71d34a901d47e9d0177c711c6850c78ce46b08f56d4225250148a13259df
[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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--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] 55cf326f40816b26546eab054667982fbbcf21609ca304e6b8a51452aa9aa0e2
[INFO] running `Command { std: "docker" "start" "-a" "55cf326f40816b26546eab054667982fbbcf21609ca304e6b8a51452aa9aa0e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling wasm-bindgen v0.2.60
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.60
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.60
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.60
[INFO] [stderr]    Compiling js-sys v0.3.37
[INFO] [stderr]    Compiling web-sys v0.3.37
[INFO] [stderr]    Compiling maze v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> rs/disjoint_set.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |       Some(x) => false,
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_code`
[INFO] [stdout]    --> rs/boundary.rs:204:11
[INFO] [stdout]     |
[INFO] [stdout] 204 |       let key_code = event.key_code();
[INFO] [stdout]     |           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `debug`
[INFO] [stdout]   --> rs/disjoint_set.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn debug(&self) -> vec::Vec<isize> {
[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: `debug`
[INFO] [stdout]    --> rs/maze.rs:119:10
[INFO] [stdout]     |
[INFO] [stdout] 119 |   pub fn debug(&self) -> Vec<isize> {
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.41s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: js-sys v0.3.37
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 4`
[INFO] running `Command { std: "docker" "inspect" "55cf326f40816b26546eab054667982fbbcf21609ca304e6b8a51452aa9aa0e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55cf326f40816b26546eab054667982fbbcf21609ca304e6b8a51452aa9aa0e2", kill_on_drop: false }`
[INFO] [stdout] 55cf326f40816b26546eab054667982fbbcf21609ca304e6b8a51452aa9aa0e2
[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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--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] 75fa114e58ebedd3697734b172ca5e8794fb84fe31df3dad04c12cee17239f1e
[INFO] running `Command { std: "docker" "start" "-a" "75fa114e58ebedd3697734b172ca5e8794fb84fe31df3dad04c12cee17239f1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling maze v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> rs/disjoint_set.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |       Some(x) => false,
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `key_code`
[INFO] [stdout]    --> rs/boundary.rs:204:11
[INFO] [stdout]     |
[INFO] [stdout] 204 |       let key_code = event.key_code();
[INFO] [stdout]     |           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `maze`
[INFO] [stdout]    --> rs/maze.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |     let maze = Maze::new(
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_maze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `draw_api`
[INFO] [stdout]    --> rs/screen_buffer.rs:195:9
[INFO] [stdout]     |
[INFO] [stdout] 195 |     let draw_api = |_: usize, _: usize, _: Color| {};
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_draw_api`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `draw_apply`
[INFO] [stdout]    --> rs/screen_buffer.rs:196:9
[INFO] [stdout]     |
[INFO] [stdout] 196 |     let draw_apply = || {};
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_draw_apply`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]    --> rs/screen_buffer.rs:197:9
[INFO] [stdout]     |
[INFO] [stdout] 197 |     let buf = ScreenBuffer::new(
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `draw_api`
[INFO] [stdout]    --> rs/screen_buffer.rs:218:9
[INFO] [stdout]     |
[INFO] [stdout] 218 |     let draw_api = |_: usize, _: usize, _: Color| {};
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_draw_api`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `draw_apply`
[INFO] [stdout]    --> rs/screen_buffer.rs:219:9
[INFO] [stdout]     |
[INFO] [stdout] 219 |     let draw_apply = || {};
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_draw_apply`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `draw_apply`
[INFO] [stdout]    --> rs/screen_buffer.rs:220:9
[INFO] [stdout]     |
[INFO] [stdout] 220 |     let draw_apply = || {};
[INFO] [stdout]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_draw_apply`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> rs/screen_buffer.rs:183:28
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn draw_api(&mut self, x: usize, y: usize, color: Color) {}
[INFO] [stdout]     |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> rs/screen_buffer.rs:183:38
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn draw_api(&mut self, x: usize, y: usize, color: Color) {}
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> rs/screen_buffer.rs:183:48
[INFO] [stdout]     |
[INFO] [stdout] 183 |     fn draw_api(&mut self, x: usize, y: usize, color: Color) {}
[INFO] [stdout]     |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `size`
[INFO] [stdout]    --> rs/screen_buffer.rs:186:7
[INFO] [stdout]     |
[INFO] [stdout] 186 |       size: usize,
[INFO] [stdout]     |       ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> rs/screen_buffer.rs:187:7
[INFO] [stdout]     |
[INFO] [stdout] 187 |       x: usize,
[INFO] [stdout]     |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> rs/screen_buffer.rs:188:7
[INFO] [stdout]     |
[INFO] [stdout] 188 |       y: usize,
[INFO] [stdout]     |       ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `color`
[INFO] [stdout]    --> rs/screen_buffer.rs:189:7
[INFO] [stdout]     |
[INFO] [stdout] 189 |       color: Color
[INFO] [stdout]     |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `debug`
[INFO] [stdout]   --> rs/disjoint_set.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |   pub fn debug(&self) -> vec::Vec<isize> {
[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: `debug`
[INFO] [stdout]    --> rs/maze.rs:119:10
[INFO] [stdout]     |
[INFO] [stdout] 119 |   pub fn debug(&self) -> Vec<isize> {
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.41s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: js-sys v0.3.37
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "75fa114e58ebedd3697734b172ca5e8794fb84fe31df3dad04c12cee17239f1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75fa114e58ebedd3697734b172ca5e8794fb84fe31df3dad04c12cee17239f1e", kill_on_drop: false }`
[INFO] [stdout] 75fa114e58ebedd3697734b172ca5e8794fb84fe31df3dad04c12cee17239f1e
[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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", 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] 8020ca8b04e893a7e777fa5a9ffe137dc7ac9be5e57f76cb80ba22bb88858491
[INFO] running `Command { std: "docker" "start" "-a" "8020ca8b04e893a7e777fa5a9ffe137dc7ac9be5e57f76cb80ba22bb88858491", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> rs/disjoint_set.rs:53:12
[INFO] [stderr]    |
[INFO] [stderr] 53 |       Some(x) => false,
[INFO] [stderr]    |            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key_code`
[INFO] [stderr]    --> rs/boundary.rs:204:11
[INFO] [stderr]     |
[INFO] [stderr] 204 |       let key_code = event.key_code();
[INFO] [stderr]     |           ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_key_code`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `maze`
[INFO] [stderr]    --> rs/maze.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 |     let maze = Maze::new(
[INFO] [stderr]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_maze`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draw_api`
[INFO] [stderr]    --> rs/screen_buffer.rs:195:9
[INFO] [stderr]     |
[INFO] [stderr] 195 |     let draw_api = |_: usize, _: usize, _: Color| {};
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_draw_api`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draw_apply`
[INFO] [stderr]    --> rs/screen_buffer.rs:196:9
[INFO] [stderr]     |
[INFO] [stderr] 196 |     let draw_apply = || {};
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_draw_apply`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `buf`
[INFO] [stderr]    --> rs/screen_buffer.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 |     let buf = ScreenBuffer::new(
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draw_api`
[INFO] [stderr]    --> rs/screen_buffer.rs:218:9
[INFO] [stderr]     |
[INFO] [stderr] 218 |     let draw_api = |_: usize, _: usize, _: Color| {};
[INFO] [stderr]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_draw_api`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draw_apply`
[INFO] [stderr]    --> rs/screen_buffer.rs:219:9
[INFO] [stderr]     |
[INFO] [stderr] 219 |     let draw_apply = || {};
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_draw_apply`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `draw_apply`
[INFO] [stderr]    --> rs/screen_buffer.rs:220:9
[INFO] [stderr]     |
[INFO] [stderr] 220 |     let draw_apply = || {};
[INFO] [stderr]     |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_draw_apply`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> rs/screen_buffer.rs:183:28
[INFO] [stderr]     |
[INFO] [stderr] 183 |     fn draw_api(&mut self, x: usize, y: usize, color: Color) {}
[INFO] [stderr]     |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> rs/screen_buffer.rs:183:38
[INFO] [stderr]     |
[INFO] [stderr] 183 |     fn draw_api(&mut self, x: usize, y: usize, color: Color) {}
[INFO] [stderr]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]    --> rs/screen_buffer.rs:183:48
[INFO] [stderr]     |
[INFO] [stderr] 183 |     fn draw_api(&mut self, x: usize, y: usize, color: Color) {}
[INFO] [stderr]     |                                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `size`
[INFO] [stderr]    --> rs/screen_buffer.rs:186:7
[INFO] [stderr]     |
[INFO] [stderr] 186 |       size: usize,
[INFO] [stderr]     |       ^^^^ help: if this is intentional, prefix it with an underscore: `_size`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> rs/screen_buffer.rs:187:7
[INFO] [stderr]     |
[INFO] [stderr] 187 |       x: usize,
[INFO] [stderr]     |       ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> rs/screen_buffer.rs:188:7
[INFO] [stderr]     |
[INFO] [stderr] 188 |       y: usize,
[INFO] [stderr]     |       ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]    --> rs/screen_buffer.rs:189:7
[INFO] [stderr]     |
[INFO] [stderr] 189 |       color: Color
[INFO] [stderr]     |       ^^^^^ help: if this is intentional, prefix it with an underscore: `_color`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `debug`
[INFO] [stderr]   --> rs/disjoint_set.rs:14:10
[INFO] [stderr]    |
[INFO] [stderr] 14 |   pub fn debug(&self) -> vec::Vec<isize> {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `debug`
[INFO] [stderr]    --> rs/maze.rs:119:10
[INFO] [stderr]     |
[INFO] [stderr] 119 |   pub fn debug(&self) -> Vec<isize> {
[INFO] [stderr]     |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `maze` (lib test) generated 18 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.15s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: js-sys v0.3.37
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 6`
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/maze-a2b27a9d5700b5b0)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test screen_buffer::tests::can_construct_screen_buffer ... ok
[INFO] [stdout] test screen_buffer::tests::can_fill_buffer ... ok
[INFO] [stdout] test maze::tests::can_construct_maze ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.36s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8020ca8b04e893a7e777fa5a9ffe137dc7ac9be5e57f76cb80ba22bb88858491", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8020ca8b04e893a7e777fa5a9ffe137dc7ac9be5e57f76cb80ba22bb88858491", kill_on_drop: false }`
[INFO] [stdout] 8020ca8b04e893a7e777fa5a9ffe137dc7ac9be5e57f76cb80ba22bb88858491