[INFO] cloning repository https://github.com/flounderK/chip8_emu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/flounderK/chip8_emu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FflounderK%2Fchip8_emu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FflounderK%2Fchip8_emu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0d8add2843a78940401730c0cf53e09ef4d21353
[INFO] checking flounderK/chip8_emu against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FflounderK%2Fchip8_emu" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/flounderK/chip8_emu
[INFO] finished tweaking git repo https://github.com/flounderK/chip8_emu
[INFO] tweaked toml for git repo https://github.com/flounderK/chip8_emu written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/flounderK/chip8_emu on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/flounderK/chip8_emu 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aeaaaf64fd8f99bae6d20c9e5a2a4cfd7bb36efee285760ce084c5584b1803c4
[INFO] running `Command { std: "docker" "start" "-a" "aeaaaf64fd8f99bae6d20c9e5a2a4cfd7bb36efee285760ce084c5584b1803c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aeaaaf64fd8f99bae6d20c9e5a2a4cfd7bb36efee285760ce084c5584b1803c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeaaaf64fd8f99bae6d20c9e5a2a4cfd7bb36efee285760ce084c5584b1803c4", kill_on_drop: false }`
[INFO] [stdout] aeaaaf64fd8f99bae6d20c9e5a2a4cfd7bb36efee285760ce084c5584b1803c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 149e77325c02b86ac8df1396ad96da0c4c8a703b9785a0249934a5aa5ece53a7
[INFO] running `Command { std: "docker" "start" "-a" "149e77325c02b86ac8df1396ad96da0c4c8a703b9785a0249934a5aa5ece53a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling sdl2-sys v0.35.1
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling sdl2 v0.35.1
[INFO] [stderr]     Checking chip8_emu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sdl2::video`
[INFO] [stdout]  --> src/display.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sdl2::video;
[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: `PixelFormatEnum`
[INFO] [stdout]  --> src/display.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sdl2::pixels::{PixelFormatEnum,Color};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rect`
[INFO] [stdout]  --> src/display.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sdl2::rect::{Rect,Point};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/display.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/display.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:202:32
[INFO] [stdout]     |
[INFO] [stdout] 202 | ...                   if ((nvx & nvy) > 0) {
[INFO] [stdout]     |                          ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 202 -                             if ((nvx & nvy) > 0) {
[INFO] [stdout] 202 +                             if (nvx & nvy) > 0 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sdl2::video`
[INFO] [stdout]  --> src/display.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use sdl2::video;
[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: `PixelFormatEnum`
[INFO] [stdout]  --> src/display.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | use sdl2::pixels::{PixelFormatEnum,Color};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rect`
[INFO] [stdout]  --> src/display.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sdl2::rect::{Rect,Point};
[INFO] [stdout]   |                  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/display.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write`
[INFO] [stdout]  --> src/display.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::Write;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/main.rs:202:32
[INFO] [stdout]     |
[INFO] [stdout] 202 | ...                   if ((nvx & nvy) > 0) {
[INFO] [stdout]     |                          ^               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 202 -                             if ((nvx & nvy) > 0) {
[INFO] [stdout] 202 +                             if (nvx & nvy) > 0 {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut mem = vec![0u8;0x1000];
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut stack = vec![0u16];
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:346:17
[INFO] [stdout]     |
[INFO] [stdout] 346 |                 _ => {
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:346:17
[INFO] [stdout]     |
[INFO] [stdout]  87 |                 0x00E0 => {
[INFO] [stdout]     |                 ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout]  91 |                 0x00EE => {
[INFO] [stdout]     |                 ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 102 |                 0x0000..=0x0fff | 0x2000..=0x2fff => {
[INFO] [stdout]     |                 --------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 108 |                 0x1000..=0x1fff => {
[INFO] [stdout]     |                 --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 346 |                 _ => {
[INFO] [stdout]     |                 ^ ...and 13 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |         let mut mem = vec![0u8;0x1000];
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:68:13
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let mut stack = vec![0u16];
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/main.rs:346:17
[INFO] [stdout]     |
[INFO] [stdout] 346 |                 _ => {
[INFO] [stdout]     |                 ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/main.rs:346:17
[INFO] [stdout]     |
[INFO] [stdout]  87 |                 0x00E0 => {
[INFO] [stdout]     |                 ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout]  91 |                 0x00EE => {
[INFO] [stdout]     |                 ------ matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 102 |                 0x0000..=0x0fff | 0x2000..=0x2fff => {
[INFO] [stdout]     |                 --------------------------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 108 |                 0x1000..=0x1fff => {
[INFO] [stdout]     |                 --------------- matches some of the same values
[INFO] [stdout] ...
[INFO] [stdout] 346 |                 _ => {
[INFO] [stdout]     |                 ^ ...and 13 other patterns collectively make this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rest`
[INFO] [stdout]   --> src/main.rs:82:28
[INFO] [stdout]    |
[INFO] [stdout] 82 |             let (op_bytes, rest) = input.split_at(std::mem::size_of::<u16>());
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_rest`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]   --> src/main.rs:79:25
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut input = &mut self.mem[..];
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `carry_or_borrow` is never read
[INFO] [stdout]    --> src/main.rs:186:33
[INFO] [stdout]     |
[INFO] [stdout] 186 | ...                   carry_or_borrow = true;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rest`
[INFO] [stdout]   --> src/main.rs:82:28
[INFO] [stdout]    |
[INFO] [stdout] 82 |             let (op_bytes, rest) = input.split_at(std::mem::size_of::<u16>());
[INFO] [stdout]    |                            ^^^^ help: if this is intentional, prefix it with an underscore: `_rest`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `input` is never read
[INFO] [stdout]   --> src/main.rs:79:25
[INFO] [stdout]    |
[INFO] [stdout] 79 |         let mut input = &mut self.mem[..];
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `carry_or_borrow` is never read
[INFO] [stdout]    --> src/main.rs:186:33
[INFO] [stdout]     |
[INFO] [stdout] 186 | ...                   carry_or_borrow = true;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `draw_flag` and `sdl_context` are never read
[INFO] [stdout]   --> src/display.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Display {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 13 |     gfx: [[u8;64]; 32],
[INFO] [stdout] 14 |     draw_flag: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 15 |     //pub window: video::Window,
[INFO] [stdout] 16 |     sdl_context: Sdl,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `poll_event` is never used
[INFO] [stdout]    --> src/display.rs:118:12
[INFO] [stdout]     |
[INFO] [stdout]  20 | impl Display {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn poll_event(&mut self) -> Result<(), String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `draw_flag` and `sdl_context` are never read
[INFO] [stdout]   --> src/display.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Display {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 13 |     gfx: [[u8;64]; 32],
[INFO] [stdout] 14 |     draw_flag: bool,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 15 |     //pub window: video::Window,
[INFO] [stdout] 16 |     sdl_context: Sdl,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `poll_event` is never used
[INFO] [stdout]    --> src/display.rs:118:12
[INFO] [stdout]     |
[INFO] [stdout]  20 | impl Display {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn poll_event(&mut self) -> Result<(), String> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:374:5
[INFO] [stdout]     |
[INFO] [stdout] 374 |     buf_reader.read(&mut emu.mem[0x200..]);
[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] 374 |     let _ = buf_reader.read(&mut emu.mem[0x200..]);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:374:5
[INFO] [stdout]     |
[INFO] [stdout] 374 |     buf_reader.read(&mut emu.mem[0x200..]);
[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] 374 |     let _ = buf_reader.read(&mut emu.mem[0x200..]);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/display.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         canvas.set_scale(4.5, 4.5);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let _ = canvas.set_scale(4.5, 4.5);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/display.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |         canvas.set_scale(4.5, 4.5);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 34 |         let _ = canvas.set_scale(4.5, 4.5);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.92s
[INFO] running `Command { std: "docker" "inspect" "149e77325c02b86ac8df1396ad96da0c4c8a703b9785a0249934a5aa5ece53a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "149e77325c02b86ac8df1396ad96da0c4c8a703b9785a0249934a5aa5ece53a7", kill_on_drop: false }`
[INFO] [stdout] 149e77325c02b86ac8df1396ad96da0c4c8a703b9785a0249934a5aa5ece53a7
