[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] ad3c69c49d8974784cbdfab75d656081553c68d3 [INFO] checking erewok/milos-mazes-rs against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ferewok%2Fmilos-mazes-rs" "/workspace/builds/worker-14/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/erewok/milos-mazes-rs on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "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-14/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" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 373520b4fe0fc1c7ce52f1c4b1971b90176631fec50a3171905523139b618825 [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" "373520b4fe0fc1c7ce52f1c4b1971b90176631fec50a3171905523139b618825", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "373520b4fe0fc1c7ce52f1c4b1971b90176631fec50a3171905523139b618825", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "373520b4fe0fc1c7ce52f1c4b1971b90176631fec50a3171905523139b618825", kill_on_drop: false }` [INFO] [stdout] 373520b4fe0fc1c7ce52f1c4b1971b90176631fec50a3171905523139b618825 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 42363d26a07621cb2bf928e2a328165aa22b77b61d844337c84b866721b1da2e [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" "42363d26a07621cb2bf928e2a328165aa22b77b61d844337c84b866721b1da2e", kill_on_drop: false }` [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling pkg-config v0.3.17 [INFO] [stderr] Compiling libc v0.2.67 [INFO] [stderr] Compiling autocfg v1.0.0 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling getrandom v0.2.2 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking adler32 v1.0.4 [INFO] [stderr] Compiling crc32fast v1.2.0 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Checking float-ord v0.2.0 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking arrayvec v0.5.1 [INFO] [stderr] Checking typed-arena v2.0.1 [INFO] [stderr] Checking fixedbitset v0.2.0 [INFO] [stderr] Checking sw-composite v0.7.10 [INFO] [stderr] Checking inflate v0.4.5 [INFO] [stderr] Checking walkdir v2.3.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling cmake v0.1.42 [INFO] [stderr] Compiling num-traits v0.2.11 [INFO] [stderr] Compiling indexmap v1.6.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling servo-fontconfig-sys v4.0.9 [INFO] [stderr] Compiling servo-freetype-sys v4.0.5 [INFO] [stderr] Compiling expat-sys v2.1.6 [INFO] [stderr] Compiling pathfinder_simd v0.5.0 [INFO] [stderr] Checking deflate v0.7.20 [INFO] [stderr] Checking dirs-sys v0.3.4 [INFO] [stderr] Checking freetype v0.4.1 [INFO] [stderr] Checking dirs v2.0.2 [INFO] [stderr] Checking rand_core v0.6.2 [INFO] [stderr] Checking png v0.15.3 [INFO] [stderr] Checking petgraph v0.5.1 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking servo-fontconfig v0.4.0 [INFO] [stderr] Checking rand v0.8.3 [INFO] [stderr] Checking pathfinder_geometry v0.5.1 [INFO] [stderr] Checking euclid v0.20.7 [INFO] [stderr] Checking font-kit v0.7.1 [INFO] [stderr] Checking lyon_geom v0.15.0 [INFO] [stderr] Checking raqote v0.8.0 [INFO] [stderr] Checking milos-mazes v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `NodeIndex`, `UnMatrix` [INFO] [stdout] --> src/render.rs:1:30 [INFO] [stdout] | [INFO] [stdout] 1 | use petgraph::matrix_graph::{UnMatrix, NodeIndex}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `base_from_coords` [INFO] [stdout] --> src/graph.rs:70:17 [INFO] [stdout] | [INFO] [stdout] 70 | 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:71:25 [INFO] [stdout] | [INFO] [stdout] 71 | use petgraph::dot::{Dot, Config}; [INFO] [stdout] | ^^^ ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `NodeIndex`, `UnMatrix` [INFO] [stdout] --> src/render.rs:1:30 [INFO] [stdout] | [INFO] [stdout] 1 | use petgraph::matrix_graph::{UnMatrix, NodeIndex}; [INFO] [stdout] | ^^^^^^^^ ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `unvisited` [INFO] [stdout] --> src/algorithms.rs:82:13 [INFO] [stdout] | [INFO] [stdout] 82 | let mut unvisited = some_grid.size() - 1; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unvisited` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cll` [INFO] [stdout] --> src/algorithms.rs:83:13 [INFO] [stdout] | [INFO] [stdout] 83 | let mut cll = some_grid.random_cell_mut(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_cll` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rng` [INFO] [stdout] --> src/algorithms.rs:85:13 [INFO] [stdout] | [INFO] [stdout] 85 | let mut rng = thread_rng(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rng` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:82:9 [INFO] [stdout] | [INFO] [stdout] 82 | let mut unvisited = some_grid.size() - 1; [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: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:83:9 [INFO] [stdout] | [INFO] [stdout] 83 | let mut cll = some_grid.random_cell_mut(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:85:9 [INFO] [stdout] | [INFO] [stdout] 85 | let mut rng = thread_rng(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `replace_cell` [INFO] [stdout] --> src/grid.rs:117:12 [INFO] [stdout] | [INFO] [stdout] 117 | pub fn replace_cell(&mut self, cll: cell::Cell) -> Result<(), &str> { [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: `size` [INFO] [stdout] --> src/grid.rs:130:12 [INFO] [stdout] | [INFO] [stdout] 130 | 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:134:12 [INFO] [stdout] | [INFO] [stdout] 134 | 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:140:12 [INFO] [stdout] | [INFO] [stdout] 140 | 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:146:12 [INFO] [stdout] | [INFO] [stdout] 146 | pub fn random_cell_mut(&mut self) -> &mut cell::Cell { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `to_png` [INFO] [stdout] --> src/grid.rs:157:12 [INFO] [stdout] | [INFO] [stdout] 157 | pub fn to_png(&self, cell_size: i32, filename: &str) -> Result<(), String> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `next` [INFO] [stdout] --> src/grid.rs:200:5 [INFO] [stdout] | [INFO] [stdout] 200 | next: Option<&'a cell::Cell>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `aldous_broder` [INFO] [stdout] --> src/algorithms.rs:81:8 [INFO] [stdout] | [INFO] [stdout] 81 | pub fn aldous_broder(some_grid: &mut grid::Grid) -> &mut grid::Grid { [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) -> UnMatrix<(i32, i32), ()> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `unvisited` [INFO] [stdout] --> src/algorithms.rs:82:13 [INFO] [stdout] | [INFO] [stdout] 82 | let mut unvisited = some_grid.size() - 1; [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_unvisited` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cll` [INFO] [stdout] --> src/algorithms.rs:83:13 [INFO] [stdout] | [INFO] [stdout] 83 | let mut cll = some_grid.random_cell_mut(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_cll` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `rng` [INFO] [stdout] --> src/algorithms.rs:85:13 [INFO] [stdout] | [INFO] [stdout] 85 | let mut rng = thread_rng(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_rng` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | graph::to_png(&sidewinder_graph, 50, 12, 12, "sidewinder_from_graph.png"); [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: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:82:9 [INFO] [stdout] | [INFO] [stdout] 82 | let mut unvisited = some_grid.size() - 1; [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: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:83:9 [INFO] [stdout] | [INFO] [stdout] 83 | let mut cll = some_grid.random_cell_mut(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/algorithms.rs:85:9 [INFO] [stdout] | [INFO] [stdout] 85 | let mut rng = thread_rng(); [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `size` [INFO] [stdout] --> src/grid.rs:130:12 [INFO] [stdout] | [INFO] [stdout] 130 | pub fn size(&self) -> i32 { [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: `random_cell` [INFO] [stdout] --> src/grid.rs:134:12 [INFO] [stdout] | [INFO] [stdout] 134 | 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:140:12 [INFO] [stdout] | [INFO] [stdout] 140 | 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:146:12 [INFO] [stdout] | [INFO] [stdout] 146 | pub fn random_cell_mut(&mut self) -> &mut cell::Cell { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `to_png` [INFO] [stdout] --> src/grid.rs:157:12 [INFO] [stdout] | [INFO] [stdout] 157 | pub fn to_png(&self, cell_size: i32, filename: &str) -> Result<(), String> { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `next` [INFO] [stdout] --> src/grid.rs:200:5 [INFO] [stdout] | [INFO] [stdout] 200 | next: Option<&'a cell::Cell>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `aldous_broder` [INFO] [stdout] --> src/algorithms.rs:81:8 [INFO] [stdout] | [INFO] [stdout] 81 | pub fn aldous_broder(some_grid: &mut grid::Grid) -> &mut grid::Grid { [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) -> UnMatrix<(i32, i32), ()> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 17 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:22:5 [INFO] [stdout] | [INFO] [stdout] 22 | graph::to_png(&sidewinder_graph, 50, 12, 12, "sidewinder_from_graph.png"); [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:81:9 [INFO] [stdout] | [INFO] [stdout] 81 | new_grid.replace_cell(c1); [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:84:9 [INFO] [stdout] | [INFO] [stdout] 84 | 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:87:9 [INFO] [stdout] | [INFO] [stdout] 87 | 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: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 26.82s [INFO] running `Command { std: "docker" "inspect" "42363d26a07621cb2bf928e2a328165aa22b77b61d844337c84b866721b1da2e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "42363d26a07621cb2bf928e2a328165aa22b77b61d844337c84b866721b1da2e", kill_on_drop: false }` [INFO] [stdout] 42363d26a07621cb2bf928e2a328165aa22b77b61d844337c84b866721b1da2e