[INFO] cloning repository https://github.com/dgendill/quarto-wasm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dgendill/quarto-wasm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgendill%2Fquarto-wasm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgendill%2Fquarto-wasm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a8712c3d186ee31a35cff11dd7b099de21d3274e
[INFO] checking dgendill/quarto-wasm/a8712c3d186ee31a35cff11dd7b099de21d3274e against master#90b65889799733f21ebdf59d96411aa531c5900a for pr-148477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdgendill%2Fquarto-wasm" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dgendill/quarto-wasm
[INFO] finished tweaking git repo https://github.com/dgendill/quarto-wasm
[INFO] tweaked toml for git repo https://github.com/dgendill/quarto-wasm written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dgendill/quarto-wasm on toolchain 90b65889799733f21ebdf59d96411aa531c5900a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+90b65889799733f21ebdf59d96411aa531c5900a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dgendill/quarto-wasm 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" "+90b65889799733f21ebdf59d96411aa531c5900a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wit-bindgen-rt v0.44.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+90b65889799733f21ebdf59d96411aa531c5900a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2bee3ccce2ddef3cbfd1725f7042a3da1f82f43dcafebe7c002bda74535e73c1
[INFO] running `Command { std: "docker" "start" "-a" "2bee3ccce2ddef3cbfd1725f7042a3da1f82f43dcafebe7c002bda74535e73c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bee3ccce2ddef3cbfd1725f7042a3da1f82f43dcafebe7c002bda74535e73c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bee3ccce2ddef3cbfd1725f7042a3da1f82f43dcafebe7c002bda74535e73c1", kill_on_drop: false }`
[INFO] [stdout] 2bee3ccce2ddef3cbfd1725f7042a3da1f82f43dcafebe7c002bda74535e73c1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+90b65889799733f21ebdf59d96411aa531c5900a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 69e1641aff887f65a9f55b1fbc1c21ecf3109ec7101bd839c9d7b193e16cf9cb
[INFO] running `Command { std: "docker" "start" "-a" "69e1641aff887f65a9f55b1fbc1c21ecf3109ec7101bd839c9d7b193e16cf9cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling wit-bindgen-rt v0.44.0
[INFO] [stderr]     Checking quarto v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/quarto/logic.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/quarto/mini_board.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::quarto::logic::Board`
[INFO] [stdout]  --> src/quarto/piece.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::quarto::logic::Board;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::Ordering`
[INFO] [stdout]  --> src/quarto/logic.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::cmp::Ordering;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::quarto::logic::Board`
[INFO] [stdout]  --> src/quarto/piece.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::quarto::logic::Board;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/quarto/debug.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut markup = r#"
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_classic_board` is never used
[INFO] [stdout]  --> src/quarto/debug.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn show_classic_board(board: &Board) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_binary_board` is never used
[INFO] [stdout]   --> src/quarto/debug.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn show_binary_board(board: &Board) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `render_to_html` is never used
[INFO] [stdout]   --> src/quarto/debug.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn render_to_html(board: &Board) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `remove_from_board` is never used
[INFO] [stdout]   --> src/quarto/logic.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn remove_from_board(board: &mut Board, x: u32, y: u32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `place_on_board` is never used
[INFO] [stdout]   --> src/quarto/logic.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn place_on_board(board: &mut Board, x: i32, y: i32, piece: Piece) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `make_full_board` is never used
[INFO] [stdout]   --> src/quarto/logic.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 | pub fn make_full_board() -> Board {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `row_property_same` is never used
[INFO] [stdout]    --> src/quarto/logic.rs:124:4
[INFO] [stdout]     |
[INFO] [stdout] 124 | fn row_property_same(row: RowPieces, property: i32) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `empty_spaces` is never used
[INFO] [stdout]    --> src/quarto/logic.rs:142:4
[INFO] [stdout]     |
[INFO] [stdout] 142 | fn empty_spaces(board: &Board) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mk_point` is never used
[INFO] [stdout]    --> src/quarto/logic.rs:163:4
[INFO] [stdout]     |
[INFO] [stdout] 163 | fn mk_point(x: i32, y: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `construct_triple_points` is never used
[INFO] [stdout]    --> src/quarto/logic.rs:168:8
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub fn construct_triple_points() -> Vec<[i32; 3]> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parts` is never used
[INFO] [stdout]  --> src/quarto/piece.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn parts(piece: i32) -> (i32, i32, i32, i32) {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_file_name` is never used
[INFO] [stdout]  --> src/quarto/piece_style/classic.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn to_file_name(piece: Piece) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_classic_piece` is never used
[INFO] [stdout]   --> src/quarto/piece_style/classic.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn show_classic_piece(piece: Piece) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_dark_light` is never used
[INFO] [stdout]   --> src/quarto/piece_style/classic.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn show_dark_light(v: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_short_tall` is never used
[INFO] [stdout]   --> src/quarto/piece_style/classic.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn show_short_tall(v: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_circle_square` is never used
[INFO] [stdout]   --> src/quarto/piece_style/classic.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn show_circle_square(v: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_hollow_solid` is never used
[INFO] [stdout]   --> src/quarto/piece_style/classic.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn show_hollow_solid(v: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/quarto/debug.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fs::write("board.html", markup);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 180 |     let _ = fs::write("board.html", markup);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/quarto/debug.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let mut markup = r#"
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `board`
[INFO] [stdout]    --> src/quarto/logic.rs:425:13
[INFO] [stdout]     |
[INFO] [stdout] 425 |         let board = [0, 1, 4, 3, EP, EP, EP, EP, EP, EP, EP, EP, EP, EP, EP, EP];
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_board`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/quarto/logic.rs:570:13
[INFO] [stdout]     |
[INFO] [stdout] 570 |         let mut board = [0, 1, 4, 3, EP, EP, EP, EP, EP, EP, EP, EP, EP, EP, EP, EP];
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_classic_board` is never used
[INFO] [stdout]  --> src/quarto/debug.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn show_classic_board(board: &Board) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_binary_board` is never used
[INFO] [stdout]   --> src/quarto/debug.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn show_binary_board(board: &Board) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `render_to_html` is never used
[INFO] [stdout]   --> src/quarto/debug.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn render_to_html(board: &Board) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `empty_spaces` is never used
[INFO] [stdout]    --> src/quarto/logic.rs:142:4
[INFO] [stdout]     |
[INFO] [stdout] 142 | fn empty_spaces(board: &Board) -> usize {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mk_point` is never used
[INFO] [stdout]    --> src/quarto/logic.rs:163:4
[INFO] [stdout]     |
[INFO] [stdout] 163 | fn mk_point(x: i32, y: i32) -> i32 {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `construct_triple_points` is never used
[INFO] [stdout]    --> src/quarto/logic.rs:168:8
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub fn construct_triple_points() -> Vec<[i32; 3]> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parts` is never used
[INFO] [stdout]  --> src/quarto/piece.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn parts(piece: i32) -> (i32, i32, i32, i32) {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_file_name` is never used
[INFO] [stdout]  --> src/quarto/piece_style/classic.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn to_file_name(piece: Piece) -> String {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_classic_piece` is never used
[INFO] [stdout]   --> src/quarto/piece_style/classic.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn show_classic_piece(piece: Piece) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_dark_light` is never used
[INFO] [stdout]   --> src/quarto/piece_style/classic.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn show_dark_light(v: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_short_tall` is never used
[INFO] [stdout]   --> src/quarto/piece_style/classic.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn show_short_tall(v: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_circle_square` is never used
[INFO] [stdout]   --> src/quarto/piece_style/classic.rs:65:4
[INFO] [stdout]    |
[INFO] [stdout] 65 | fn show_circle_square(v: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `show_hollow_solid` is never used
[INFO] [stdout]   --> src/quarto/piece_style/classic.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn show_hollow_solid(v: i32) -> &'static str {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/quarto/debug.rs:180:5
[INFO] [stdout]     |
[INFO] [stdout] 180 |     fs::write("board.html", markup);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 180 |     let _ = fs::write("board.html", markup);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.08s
[INFO] running `Command { std: "docker" "inspect" "69e1641aff887f65a9f55b1fbc1c21ecf3109ec7101bd839c9d7b193e16cf9cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69e1641aff887f65a9f55b1fbc1c21ecf3109ec7101bd839c9d7b193e16cf9cb", kill_on_drop: false }`
[INFO] [stdout] 69e1641aff887f65a9f55b1fbc1c21ecf3109ec7101bd839c9d7b193e16cf9cb