[INFO] cloning repository https://github.com/victorlaurentiu/maze_gen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/victorlaurentiu/maze_gen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvictorlaurentiu%2Fmaze_gen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvictorlaurentiu%2Fmaze_gen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ab01fff9b9c2483b1783cc85b9971d219f9d6c4f
[INFO] building victorlaurentiu/maze_gen against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvictorlaurentiu%2Fmaze_gen" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/victorlaurentiu/maze_gen
[INFO] finished tweaking git repo https://github.com/victorlaurentiu/maze_gen
[INFO] tweaked toml for git repo https://github.com/victorlaurentiu/maze_gen written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/victorlaurentiu/maze_gen on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/victorlaurentiu/maze_gen 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "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
[INFO] [stderr]      Locking 36 packages to latest compatible versions
[INFO] [stderr]       Adding anstream v0.6.20
[INFO] [stderr]       Adding anstyle v1.0.13
[INFO] [stderr]       Adding anstyle-parse v0.2.7
[INFO] [stderr]       Adding anstyle-query v1.1.4
[INFO] [stderr]       Adding anstyle-wincon v3.0.10
[INFO] [stderr]       Adding clap v4.5.48
[INFO] [stderr]       Adding clap_builder v4.5.48
[INFO] [stderr]       Adding clap_derive v4.5.47
[INFO] [stderr]       Adding clap_lex v0.7.5
[INFO] [stderr]       Adding colorchoice v1.0.4
[INFO] [stderr]       Adding heck v0.5.0
[INFO] [stderr]       Adding is_terminal_polyfill v1.70.1
[INFO] [stderr]       Adding once_cell_polyfill v1.70.1
[INFO] [stderr]       Adding ppv-lite86 v0.2.21
[INFO] [stderr]     Updating proc-macro2 v1.0.39 -> v1.0.101
[INFO] [stderr]       Adding queues v1.1.0
[INFO] [stderr]     Updating quote v1.0.18 -> v1.0.41
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] [stderr]       Adding rand_chacha v0.3.1
[INFO] [stderr]       Adding rand_core v0.6.4
[INFO] [stderr]       Adding strsim v0.11.1
[INFO] [stderr]       Adding syn v2.0.106
[INFO] [stderr]       Adding utf8parse v0.2.2
[INFO] [stderr]       Adding windows-link v0.2.0
[INFO] [stderr]       Adding windows-sys v0.60.2
[INFO] [stderr]       Adding windows-targets v0.53.4
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.53.0
[INFO] [stderr]       Adding windows_aarch64_msvc v0.53.0
[INFO] [stderr]       Adding windows_i686_gnu v0.53.0
[INFO] [stderr]       Adding windows_i686_gnullvm v0.53.0
[INFO] [stderr]       Adding windows_i686_msvc v0.53.0
[INFO] [stderr]       Adding windows_x86_64_gnu v0.53.0
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.53.0
[INFO] [stderr]       Adding windows_x86_64_msvc v0.53.0
[INFO] [stderr]       Adding zerocopy v0.8.27
[INFO] [stderr]       Adding zerocopy-derive v0.8.27
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.81
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77b3459e20eaa1ca6c3495c6bf1d392c4e75ff59910d8dbc20c7960bab67b561
[INFO] running `Command { std: "docker" "start" "-a" "77b3459e20eaa1ca6c3495c6bf1d392c4e75ff59910d8dbc20c7960bab67b561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77b3459e20eaa1ca6c3495c6bf1d392c4e75ff59910d8dbc20c7960bab67b561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b3459e20eaa1ca6c3495c6bf1d392c4e75ff59910d8dbc20c7960bab67b561", kill_on_drop: false }`
[INFO] [stdout] 77b3459e20eaa1ca6c3495c6bf1d392c4e75ff59910d8dbc20c7960bab67b561
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 766539d7cbdb209474c6e82048d887418e0fa9b8636ad298dffdbcbd3b6f2d06
[INFO] running `Command { std: "docker" "start" "-a" "766539d7cbdb209474c6e82048d887418e0fa9b8636ad298dffdbcbd3b6f2d06", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling xml-rs v0.8.4
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling smallvec v1.8.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling wayland-sys v0.28.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling ttf-parser v0.6.2
[INFO] [stderr]    Compiling piston-float v1.0.1
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling once_cell v1.12.0
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[INFO] [stderr]    Compiling piston-graphics_api_version v1.0.1
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[INFO] [stderr]    Compiling image v0.24.2
[INFO] [stderr]    Compiling piston v0.53.1
[INFO] [stderr]    Compiling clap v4.5.48
[INFO] [stderr]    Compiling piston-gfx_texture v0.42.0
[INFO] [stderr]    Compiling piston2d-opengl_graphics v0.81.0
[INFO] [stderr]    Compiling piston2d-gfx_graphics v0.76.0
[INFO] [stderr]    Compiling smithay-client-toolkit v0.12.3
[INFO] [stderr]    Compiling winit v0.24.0
[INFO] [stderr]    Compiling glutin v0.26.0
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.69.0
[INFO] [stderr]    Compiling pistoncore-glutin_window v0.70.1
[INFO] [stderr]    Compiling piston_window v0.123.0
[INFO] [stderr]    Compiling maze_gen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `obs`
[INFO] [stdout]   --> src/maze_gen_algos.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let obs = obs.unwrap_or(&fake_obs);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_obs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `off_i`
[INFO] [stdout]   --> src/maze_gen_algos.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (off_i, off_j) = match distr.sample(&mut gen) {
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_off_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `off_j`
[INFO] [stdout]   --> src/maze_gen_algos.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (off_i, off_j) = match distr.sample(&mut gen) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_off_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]  --> src/grid.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Direction {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GridCoords` is never constructed
[INFO] [stdout]   --> src/grid.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct GridCoords {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_cell_coords` is never used
[INFO] [stdout]   --> src/grid.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Grid {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn get_cell_coords(&self, coord: &GridCoords) -> Option<&Cell> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update` is never used
[INFO] [stdout]   --> src/maze_gen_algos.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait Observer {
[INFO] [stdout]    |           -------- method in this trait
[INFO] [stdout] 12 |     fn update(&self);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_rand_kruskal` is never used
[INFO] [stdout]   --> src/maze_gen_algos.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn create_rand_kruskal() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 37s
[INFO] running `Command { std: "docker" "inspect" "766539d7cbdb209474c6e82048d887418e0fa9b8636ad298dffdbcbd3b6f2d06", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "766539d7cbdb209474c6e82048d887418e0fa9b8636ad298dffdbcbd3b6f2d06", kill_on_drop: false }`
[INFO] [stdout] 766539d7cbdb209474c6e82048d887418e0fa9b8636ad298dffdbcbd3b6f2d06
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21b36bcae686f920dfa965d84c09a430729f9b70d16412ce03bcd26f17465b40
[INFO] running `Command { std: "docker" "start" "-a" "21b36bcae686f920dfa965d84c09a430729f9b70d16412ce03bcd26f17465b40", kill_on_drop: false }`
[INFO] [stderr]    Compiling maze_gen v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `obs`
[INFO] [stdout]   --> src/maze_gen_algos.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let obs = obs.unwrap_or(&fake_obs);
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_obs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `off_i`
[INFO] [stdout]   --> src/maze_gen_algos.rs:52:18
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (off_i, off_j) = match distr.sample(&mut gen) {
[INFO] [stdout]    |                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_off_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `off_j`
[INFO] [stdout]   --> src/maze_gen_algos.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |             let (off_i, off_j) = match distr.sample(&mut gen) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_off_j`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Direction` is never used
[INFO] [stdout]  --> src/grid.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Direction {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `GridCoords` is never constructed
[INFO] [stdout]   --> src/grid.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub struct GridCoords {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_cell_coords` is never used
[INFO] [stdout]   --> src/grid.rs:48:12
[INFO] [stdout]    |
[INFO] [stdout] 40 | impl Grid {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn get_cell_coords(&self, coord: &GridCoords) -> Option<&Cell> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update` is never used
[INFO] [stdout]   --> src/maze_gen_algos.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub trait Observer {
[INFO] [stdout]    |           -------- method in this trait
[INFO] [stdout] 12 |     fn update(&self);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_rand_kruskal` is never used
[INFO] [stdout]   --> src/maze_gen_algos.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn create_rand_kruskal() {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "21b36bcae686f920dfa965d84c09a430729f9b70d16412ce03bcd26f17465b40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21b36bcae686f920dfa965d84c09a430729f9b70d16412ce03bcd26f17465b40", kill_on_drop: false }`
[INFO] [stdout] 21b36bcae686f920dfa965d84c09a430729f9b70d16412ce03bcd26f17465b40