[INFO] cloning repository https://github.com/erewok/milos-mazes-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/erewok/milos-mazes-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferewok%2Fmilos-mazes-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferewok%2Fmilos-mazes-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4492c2d3cc3dad64d7eab4bd3ccb11f2448094b9
[INFO] testing erewok/milos-mazes-rs against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferewok%2Fmilos-mazes-rs" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/erewok/milos-mazes-rs 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/erewok/milos-mazes-rs
[INFO] finished tweaking git repo https://github.com/erewok/milos-mazes-rs
[INFO] tweaked toml for git repo https://github.com/erewok/milos-mazes-rs written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/erewok/milos-mazes-rs 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 sw-composite v0.7.10
[INFO] [stderr]   Downloaded typed-arena v2.0.1
[INFO] [stderr]   Downloaded proc-macro2 v1.0.33
[INFO] [stderr]   Downloaded raqote v0.8.0
[INFO] [stderr]   Downloaded lyon_geom v0.15.0
[INFO] [stderr]   Downloaded clap_derive v3.0.0-rc.4
[INFO] [stderr]   Downloaded font-kit v0.7.1
[INFO] [stderr]   Downloaded clap v3.0.0-rc.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] a749c7d751d7508ce10704ac07a8273f845e3bf394dfe0ddfc3d9feae00b9430
[INFO] running `Command { std: "docker" "start" "-a" "a749c7d751d7508ce10704ac07a8273f845e3bf394dfe0ddfc3d9feae00b9430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a749c7d751d7508ce10704ac07a8273f845e3bf394dfe0ddfc3d9feae00b9430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a749c7d751d7508ce10704ac07a8273f845e3bf394dfe0ddfc3d9feae00b9430", kill_on_drop: false }`
[INFO] [stdout] a749c7d751d7508ce10704ac07a8273f845e3bf394dfe0ddfc3d9feae00b9430
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 07989f914ba3f3645841132af942b3602c437995f45cf6b10262ac6823a08496
[INFO] running `Command { std: "docker" "start" "-a" "07989f914ba3f3645841132af942b3602c437995f45cf6b10262ac6823a08496", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling fixedbitset v0.4.0
[INFO] [stderr]    Compiling sw-composite v0.7.10
[INFO] [stderr]    Compiling cmake v0.1.42
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling euclid v0.20.7
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling petgraph v0.6.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling lyon_geom v0.15.0
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling freetype v0.4.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling servo-fontconfig v0.4.0
[INFO] [stderr]    Compiling pathfinder_geometry v0.5.1
[INFO] [stderr]    Compiling font-kit v0.7.1
[INFO] [stderr]    Compiling raqote v0.8.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.0-rc.4
[INFO] [stderr]    Compiling clap v3.0.0-rc.4
[INFO] [stderr]    Compiling milos-mazes v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `binary_tree_cell`
[INFO] [stdout]  --> src/algorithms.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn binary_tree_cell(some_cell: &mut cell::Cell) -> &mut cell::Cell {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_tree`
[INFO] [stdout]   --> src/algorithms.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn binary_tree(some_grid: &grid::Grid) -> grid::Grid {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sidewinder`
[INFO] [stdout]   --> src/algorithms.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn sidewinder(some_grid: &grid::Grid) -> grid::Grid {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `neighbor_cells`
[INFO] [stdout]   --> src/cell.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn neighbor_cells(coords: (i32, i32)) -> collections::HashMap<Direction, (i32, i32)> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `coords`
[INFO] [stdout]   --> src/cell.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn coords(&self) -> (i32, i32) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_neighbor`
[INFO] [stdout]   --> src/cell.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn add_neighbor(&mut self, other: (i32, i32)) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `neighbor_direction`
[INFO] [stdout]    --> src/cell.rs:107:12
[INFO] [stdout]     |
[INFO] [stdout] 107 |     pub fn neighbor_direction(&self, neighbor: (i32, i32)) -> Option<Direction> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `neighbors`
[INFO] [stdout]    --> src/cell.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn neighbors(&self) -> Vec<&(i32, i32)> {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_grid`
[INFO] [stdout]   --> src/distances.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn from_grid(start: (i32, i32), grid: &grid::Grid) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `from_grid`
[INFO] [stdout]  --> src/graph.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn from_grid(some_grid: grid::Grid) -> UnGraph<(i32, i32), ()> {
[INFO] [stdout]   |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `base_from_coords`
[INFO] [stdout]   --> src/graph.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn base_from_coords(rows: i32, columns: i32) -> UnGraph<(i32, i32), ()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_png`
[INFO] [stdout]   --> src/graph.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn to_png(
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Neighbors`
[INFO] [stdout]  --> src/grid.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Neighbors {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get_neighbor_coords`
[INFO] [stdout]   --> src/grid.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub fn get_neighbor_coords(current: (i32, i32)) -> Neighbors {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/grid.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn new(rows: i32, columns: i32) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_cells`
[INFO] [stdout]   --> src/grid.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn from_cells(cells: Vec<Vec<cell::Cell>>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/grid.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn iter(&self) -> IterGrid {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `prepare_grid`
[INFO] [stdout]   --> src/grid.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn prepare_grid(&mut self) -> &mut Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `configure_cells`
[INFO] [stdout]   --> src/grid.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn configure_cells(&mut self) -> &mut Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `replace_cell`
[INFO] [stdout]   --> src/grid.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn replace_cell(&mut self, cll: cell::Cell) -> Result<(), &str> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]    --> src/grid.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn size(&self) -> i32 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random_cell`
[INFO] [stdout]    --> src/grid.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn random_cell(&self) -> &cell::Cell {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random_cell_cloned`
[INFO] [stdout]    --> src/grid.rs:120:12
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn random_cell_cloned(&self) -> cell::Cell {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random_cell_mut`
[INFO] [stdout]    --> src/grid.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn random_cell_mut(&mut self) -> &mut cell::Cell {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `each_row`
[INFO] [stdout]    --> src/grid.rs:133:12
[INFO] [stdout]     |
[INFO] [stdout] 133 |     pub fn each_row(&self) -> std::slice::Iter<Vec<cell::Cell>> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_png`
[INFO] [stdout]    --> src/grid.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn to_png(&self, cell_size: i32, filename: &str) -> Result<(), String> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/grid.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 |     fn new(grid: &'a Grid) -> IterGrid<'a> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_cells`
[INFO] [stdout]   --> src/hash_grid.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn from_cells(cells: Vec<Vec<cell::Cell>>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]    --> src/hash_grid.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn size(&self) -> i32 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.91s
[INFO] running `Command { std: "docker" "inspect" "07989f914ba3f3645841132af942b3602c437995f45cf6b10262ac6823a08496", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07989f914ba3f3645841132af942b3602c437995f45cf6b10262ac6823a08496", kill_on_drop: false }`
[INFO] [stdout] 07989f914ba3f3645841132af942b3602c437995f45cf6b10262ac6823a08496
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] 3a8d36000b2ffe2013f6b779f4ceccbea41144b26ec4abccdcc9653c79cf119c
[INFO] running `Command { std: "docker" "start" "-a" "3a8d36000b2ffe2013f6b779f4ceccbea41144b26ec4abccdcc9653c79cf119c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling milos-mazes v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `base_from_coords`
[INFO] [stdout]   --> src/graph.rs:78:17
[INFO] [stdout]    |
[INFO] [stdout] 78 |     use super::{base_from_coords, from_grid};
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Config`, `Dot`
[INFO] [stdout]   --> src/graph.rs:80:25
[INFO] [stdout]    |
[INFO] [stdout] 80 |     use petgraph::dot::{Config, Dot};
[INFO] [stdout]    |                         ^^^^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_tree_cell`
[INFO] [stdout]  --> src/algorithms.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn binary_tree_cell(some_cell: &mut cell::Cell) -> &mut cell::Cell {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `binary_tree`
[INFO] [stdout]   --> src/algorithms.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn binary_tree(some_grid: &grid::Grid) -> grid::Grid {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sidewinder`
[INFO] [stdout]   --> src/algorithms.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn sidewinder(some_grid: &grid::Grid) -> grid::Grid {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `neighbor_cells`
[INFO] [stdout]   --> src/cell.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub fn neighbor_cells(coords: (i32, i32)) -> collections::HashMap<Direction, (i32, i32)> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_neighbor`
[INFO] [stdout]   --> src/cell.rs:89:12
[INFO] [stdout]    |
[INFO] [stdout] 89 |     pub fn add_neighbor(&mut self, other: (i32, i32)) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_grid`
[INFO] [stdout]   --> src/distances.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn from_grid(start: (i32, i32), grid: &grid::Grid) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `base_from_coords`
[INFO] [stdout]   --> src/graph.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn base_from_coords(rows: i32, columns: i32) -> UnGraph<(i32, i32), ()> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_png`
[INFO] [stdout]   --> src/graph.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn to_png(
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_cells`
[INFO] [stdout]   --> src/grid.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn from_cells(cells: Vec<Vec<cell::Cell>>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]    --> src/grid.rs:110:12
[INFO] [stdout]     |
[INFO] [stdout] 110 |     pub fn size(&self) -> i32 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random_cell`
[INFO] [stdout]    --> src/grid.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |     pub fn random_cell(&self) -> &cell::Cell {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random_cell_cloned`
[INFO] [stdout]    --> src/grid.rs:120:12
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn random_cell_cloned(&self) -> cell::Cell {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `random_cell_mut`
[INFO] [stdout]    --> src/grid.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn random_cell_mut(&mut self) -> &mut cell::Cell {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `each_row`
[INFO] [stdout]    --> src/grid.rs:133:12
[INFO] [stdout]     |
[INFO] [stdout] 133 |     pub fn each_row(&self) -> std::slice::Iter<Vec<cell::Cell>> {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_png`
[INFO] [stdout]    --> src/grid.rs:137:12
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn to_png(&self, cell_size: i32, filename: &str) -> Result<(), String> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_cells`
[INFO] [stdout]   --> src/hash_grid.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn from_cells(cells: Vec<Vec<cell::Cell>>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `size`
[INFO] [stdout]    --> src/hash_grid.rs:126:12
[INFO] [stdout]     |
[INFO] [stdout] 126 |     pub fn size(&self) -> i32 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graph.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |         new_grid.replace_cell(c1);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graph.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |         new_grid.replace_cell(c2);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/graph.rs:94:9
[INFO] [stdout]    |
[INFO] [stdout] 94 |         new_grid.replace_cell(c3);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 46.87s
[INFO] running `Command { std: "docker" "inspect" "3a8d36000b2ffe2013f6b779f4ceccbea41144b26ec4abccdcc9653c79cf119c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a8d36000b2ffe2013f6b779f4ceccbea41144b26ec4abccdcc9653c79cf119c", kill_on_drop: false }`
[INFO] [stdout] 3a8d36000b2ffe2013f6b779f4ceccbea41144b26ec4abccdcc9653c79cf119c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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] [stdout] ece5691279d39b4c0bf7f5b191ba88b49ec9c76714b87a1c5c5606adf1c6a171
[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" "ece5691279d39b4c0bf7f5b191ba88b49ec9c76714b87a1c5c5606adf1c6a171", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `base_from_coords`
[INFO] [stderr]   --> src/graph.rs:78:17
[INFO] [stderr]    |
[INFO] [stderr] 78 |     use super::{base_from_coords, from_grid};
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Config`, `Dot`
[INFO] [stderr]   --> src/graph.rs:80:25
[INFO] [stderr]    |
[INFO] [stderr] 80 |     use petgraph::dot::{Config, Dot};
[INFO] [stderr]    |                         ^^^^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `binary_tree_cell`
[INFO] [stderr]  --> src/algorithms.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn binary_tree_cell(some_cell: &mut cell::Cell) -> &mut cell::Cell {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `binary_tree`
[INFO] [stderr]   --> src/algorithms.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn binary_tree(some_grid: &grid::Grid) -> grid::Grid {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sidewinder`
[INFO] [stderr]   --> src/algorithms.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn sidewinder(some_grid: &grid::Grid) -> grid::Grid {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `neighbor_cells`
[INFO] [stderr]   --> src/cell.rs:22:8
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn neighbor_cells(coords: (i32, i32)) -> collections::HashMap<Direction, (i32, i32)> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `add_neighbor`
[INFO] [stderr]   --> src/cell.rs:89:12
[INFO] [stderr]    |
[INFO] [stderr] 89 |     pub fn add_neighbor(&mut self, other: (i32, i32)) {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_grid`
[INFO] [stderr]   --> src/distances.rs:41:12
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn from_grid(start: (i32, i32), grid: &grid::Grid) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `base_from_coords`
[INFO] [stderr]   --> src/graph.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn base_from_coords(rows: i32, columns: i32) -> UnGraph<(i32, i32), ()> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `to_png`
[INFO] [stderr]   --> src/graph.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub fn to_png(
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_cells`
[INFO] [stderr]   --> src/grid.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn from_cells(cells: Vec<Vec<cell::Cell>>) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `size`
[INFO] [stderr]    --> src/grid.rs:110:12
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn size(&self) -> i32 {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `random_cell`
[INFO] [stderr]    --> src/grid.rs:114:12
[INFO] [stderr]     |
[INFO] [stderr] 114 |     pub fn random_cell(&self) -> &cell::Cell {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `random_cell_cloned`
[INFO] [stderr]    --> src/grid.rs:120:12
[INFO] [stderr]     |
[INFO] [stderr] 120 |     pub fn random_cell_cloned(&self) -> cell::Cell {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `random_cell_mut`
[INFO] [stderr]    --> src/grid.rs:126:12
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn random_cell_mut(&mut self) -> &mut cell::Cell {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `each_row`
[INFO] [stderr]    --> src/grid.rs:133:12
[INFO] [stderr]     |
[INFO] [stderr] 133 |     pub fn each_row(&self) -> std::slice::Iter<Vec<cell::Cell>> {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_png`
[INFO] [stderr]    --> src/grid.rs:137:12
[INFO] [stderr]     |
[INFO] [stderr] 137 |     pub fn to_png(&self, cell_size: i32, filename: &str) -> Result<(), String> {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_cells`
[INFO] [stderr]   --> src/hash_grid.rs:49:12
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn from_cells(cells: Vec<Vec<cell::Cell>>) -> Self {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `size`
[INFO] [stderr]    --> src/hash_grid.rs:126:12
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn size(&self) -> i32 {
[INFO] [stderr]     |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/graph.rs:88:9
[INFO] [stderr]    |
[INFO] [stderr] 88 |         new_grid.replace_cell(c1);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/graph.rs:91:9
[INFO] [stderr]    |
[INFO] [stderr] 91 |         new_grid.replace_cell(c2);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/graph.rs:94:9
[INFO] [stderr]    |
[INFO] [stderr] 94 |         new_grid.replace_cell(c3);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `milos-mazes` (bin "milos-mazes" test) generated 22 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.20s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/milos_mazes-2462892f9158b75d)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test graph::test::test_from_coords ... ok
[INFO] [stdout] test grid::test::iter ... ok
[INFO] [stdout] test graph::test::test_from_grid ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ece5691279d39b4c0bf7f5b191ba88b49ec9c76714b87a1c5c5606adf1c6a171", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ece5691279d39b4c0bf7f5b191ba88b49ec9c76714b87a1c5c5606adf1c6a171", kill_on_drop: false }`
[INFO] [stdout] ece5691279d39b4c0bf7f5b191ba88b49ec9c76714b87a1c5c5606adf1c6a171