[INFO] cloning repository https://github.com/daltooneeq/key_sinthesizer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daltooneeq/key_sinthesizer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaltooneeq%2Fkey_sinthesizer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaltooneeq%2Fkey_sinthesizer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 983fa0d1606f1b67751b4109f252d7e14026cfe5
[INFO] checking daltooneeq/key_sinthesizer against 36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6 for pr-160581
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaltooneeq%2Fkey_sinthesizer" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/daltooneeq/key_sinthesizer
[INFO] finished tweaking git repo https://github.com/daltooneeq/key_sinthesizer
[INFO] tweaked toml for git repo https://github.com/daltooneeq/key_sinthesizer written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/daltooneeq/key_sinthesizer on toolchain 36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/daltooneeq/key_sinthesizer 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" "+36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1d2354b944a51b1e578f971553f7c8b2456762bd75a9e3ce0275a8f69c943eec
[INFO] running `Command { std: "docker" "start" "1d2354b944a51b1e578f971553f7c8b2456762bd75a9e3ce0275a8f69c943eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d2354b944a51b1e578f971553f7c8b2456762bd75a9e3ce0275a8f69c943eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1d2354b944a51b1e578f971553f7c8b2456762bd75a9e3ce0275a8f69c943eec" "/opt/rustwide/cargo-home/bin/cargo" "+36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d2354b944a51b1e578f971553f7c8b2456762bd75a9e3ce0275a8f69c943eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1d2354b944a51b1e578f971553f7c8b2456762bd75a9e3ce0275a8f69c943eec" "/opt/rustwide/cargo-home/bin/cargo" "+36e0a7eac2392bdd51fab6e7ff1d8c0e42d33bf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]     Checking cfg-if v1.0.4
[INFO] [stderr]    Compiling pkg-config v0.3.33
[INFO] [stderr]     Checking log v0.4.32
[INFO] [stderr]     Checking once_cell v1.21.4
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]     Checking linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling find-msvc-tools v0.1.9
[INFO] [stderr]    Compiling shlex v2.0.1
[INFO] [stderr]    Compiling memchr v2.8.2
[INFO] [stderr]     Checking downcast-rs v1.2.1
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]    Compiling wayland-client v0.31.14
[INFO] [stderr]     Checking libloading v0.8.9
[INFO] [stderr]     Checking stable_deref_trait v1.2.1
[INFO] [stderr]     Checking dlib v0.5.3
[INFO] [stderr]    Compiling khronos_api v3.1.0
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]     Checking slab v0.4.12
[INFO] [stderr]    Compiling zerocopy v0.8.52
[INFO] [stderr]    Compiling quick-xml v0.39.4
[INFO] [stderr]     Checking writeable v0.6.3
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling cc v1.2.64
[INFO] [stderr]    Compiling xml-rs v0.8.28
[INFO] [stderr]     Checking litemap v0.8.2
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling ahash v0.8.12
[INFO] [stderr]     Checking polycool v0.4.0
[INFO] [stderr]    Compiling icu_properties_data v2.2.0
[INFO] [stderr]     Checking pin-project-lite v0.2.17
[INFO] [stderr]    Compiling wayland-sys v0.31.11
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]     Checking tracing-core v0.1.36
[INFO] [stderr]    Compiling icu_normalizer_data v2.2.0
[INFO] [stderr]     Checking utf8_iter v1.0.4
[INFO] [stderr]    Compiling x11-dl v2.21.0
[INFO] [stderr]     Checking simd-adler32 v0.3.9
[INFO] [stderr]     Checking xcursor v0.3.10
[INFO] [stderr]     Checking cursor-icon v1.2.0
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]     Checking xkeysym v0.2.1
[INFO] [stderr]     Checking linebender_resource_handle v0.1.1
[INFO] [stderr]     Checking foldhash v0.2.0
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]    Compiling crc32fast v1.5.0
[INFO] [stderr]     Checking lock_api v0.4.14
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking hashbrown v0.16.1
[INFO] [stderr]    Compiling typeid v1.0.3
[INFO] [stderr]     Checking adler2 v2.0.1
[INFO] [stderr]     Checking x11rb-protocol v0.13.2
[INFO] [stderr]    Compiling thiserror v2.0.18
[INFO] [stderr]     Checking as-raw-xcb-connection v1.0.1
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]    Compiling smithay-client-toolkit v0.19.2
[INFO] [stderr]     Checking tracing v0.1.44
[INFO] [stderr]     Checking fdeflate v0.3.7
[INFO] [stderr]    Compiling wayland-scanner v0.31.10
[INFO] [stderr]    Compiling gl_generator v0.14.0
[INFO] [stderr]    Compiling winit v0.30.13
[INFO] [stderr]     Checking unicode-ident v1.0.24
[INFO] [stderr]     Checking epaint_default_fonts v0.34.3
[INFO] [stderr]     Checking pxfm v0.1.29
[INFO] [stderr]     Checking raw-window-handle v0.6.2
[INFO] [stderr]     Checking flate2 v1.1.9
[INFO] [stderr]     Checking profiling v1.0.18
[INFO] [stderr]     Checking memmap2 v0.9.10
[INFO] [stderr]     Checking nohash-hasher v0.2.0
[INFO] [stderr]     Checking self_cell v1.2.2
[INFO] [stderr]    Compiling smithay-client-toolkit v0.20.0
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]    Compiling alsa-sys v0.4.0
[INFO] [stderr]    Compiling glutin v0.32.3
[INFO] [stderr]    Compiling memoffset v0.9.1
[INFO] [stderr]     Checking unicode-segmentation v1.13.3
[INFO] [stderr]     Checking dpi v0.1.2
[INFO] [stderr]     Checking smol_str v0.2.2
[INFO] [stderr]    Compiling glutin_egl_sys v0.7.1
[INFO] [stderr]    Compiling glutin_glx_sys v0.6.1
[INFO] [stderr]     Checking byteorder-lite v0.1.0
[INFO] [stderr]    Compiling x11 v2.21.0
[INFO] [stderr]    Compiling wayland-backend v0.3.15
[INFO] [stderr]    Compiling glutin-winit v0.5.0
[INFO] [stderr]     Checking glow v0.17.0
[INFO] [stderr]     Checking web-time v1.1.0
[INFO] [stderr]    Compiling cpal v0.18.1
[INFO] [stderr]    Compiling litrs v1.0.0
[INFO] [stderr]     Checking home v0.5.12
[INFO] [stderr]     Checking nom v1.2.4
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]     Checking meval v0.2.0
[INFO] [stderr]    Compiling document-features v0.2.12
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]     Checking bitflags v2.13.0
[INFO] [stderr]     Checking uuid v1.23.3
[INFO] [stderr]     Checking xkbcommon-dl v0.4.2
[INFO] [stderr]     Checking png v0.18.1
[INFO] [stderr]     Checking alsa v0.11.0
[INFO] [stderr]     Checking rdev v0.5.3
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling displaydoc v0.2.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling enumn v0.1.14
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]    Compiling thiserror-impl v2.0.18
[INFO] [stderr]     Checking moxcms v0.8.1
[INFO] [stderr]     Checking zerofrom v0.1.8
[INFO] [stderr]     Checking yoke v0.8.3
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stderr]     Checking bytemuck v1.25.0
[INFO] [stderr]     Checking color v0.3.3
[INFO] [stderr]     Checking fearless_simd v0.3.0
[INFO] [stderr]     Checking zerovec v0.11.6
[INFO] [stderr]     Checking zerotrie v0.2.4
[INFO] [stderr]     Checking tinystr v0.8.3
[INFO] [stderr]     Checking potential_utf v0.1.5
[INFO] [stderr]     Checking icu_collections v2.2.0
[INFO] [stderr]     Checking icu_locale_core v2.2.0
[INFO] [stderr]     Checking icu_provider v2.2.0
[INFO] [stderr]     Checking icu_properties v2.2.0
[INFO] [stderr]     Checking polling v3.11.0
[INFO] [stderr]     Checking gethostname v1.1.0
[INFO] [stderr]     Checking calloop v0.14.4
[INFO] [stderr]     Checking smallvec v1.15.2
[INFO] [stderr]     Checking font-types v0.11.3
[INFO] [stderr]     Checking emath v0.34.3
[INFO] [stderr]     Checking ron v0.12.1
[INFO] [stderr]     Checking accesskit v0.24.1
[INFO] [stderr]     Checking calloop v0.13.0
[INFO] [stderr]     Checking kurbo v0.13.1
[INFO] [stderr]     Checking icu_normalizer v2.2.0
[INFO] [stderr]     Checking parking_lot v0.12.5
[INFO] [stderr]     Checking idna_adapter v1.2.2
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking ecolor v0.34.3
[INFO] [stderr]     Checking read-fonts v0.37.0
[INFO] [stderr]     Checking wayland-csd-frame v0.3.0
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking peniko v0.6.1
[INFO] [stderr]     Checking vello_common v0.0.6
[INFO] [stderr]     Checking webbrowser v1.2.1
[INFO] [stderr]     Checking image v0.25.10
[INFO] [stderr]     Checking vello_cpu v0.0.6
[INFO] [stderr]     Checking wayland-protocols v0.32.12
[INFO] [stderr]     Checking wayland-cursor v0.31.14
[INFO] [stderr]     Checking calloop-wayland-source v0.3.0
[INFO] [stderr]     Checking calloop-wayland-source v0.4.1
[INFO] [stderr]     Checking x11rb v0.13.2
[INFO] [stderr]     Checking arboard v3.6.1
[INFO] [stderr]     Checking skrifa v0.40.0
[INFO] [stderr]     Checking wayland-protocols-wlr v0.3.12
[INFO] [stderr]     Checking wayland-protocols-misc v0.3.12
[INFO] [stderr]     Checking wayland-protocols-plasma v0.3.12
[INFO] [stderr]     Checking wayland-protocols-experimental v20250721.0.1
[INFO] [stderr]     Checking epaint v0.34.3
[INFO] [stderr]     Checking smithay-clipboard v0.7.3
[INFO] [stderr]     Checking egui v0.34.3
[INFO] [stderr]     Checking egui-winit v0.34.3
[INFO] [stderr]     Checking egui_glow v0.34.3
[INFO] [stderr]     Checking eframe v0.34.3
[INFO] [stderr]     Checking key_sinthesizer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/key.rs:50:36
[INFO] [stdout]    |
[INFO] [stdout] 50 |             notes[i*12+j].octave = (i as u8);
[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] 50 -             notes[i*12+j].octave = (i as u8);
[INFO] [stdout] 50 +             notes[i*12+j].octave = i as u8;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/f.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |         y[i] = (meval::eval_str(&copy).unwrap() as f32);
[INFO] [stdout]    |                ^                                      ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 11 -         y[i] = (meval::eval_str(&copy).unwrap() as f32);
[INFO] [stdout] 11 +         y[i] = meval::eval_str(&copy).unwrap() as f32;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `traits::StreamTrait`
[INFO] [stdout]  --> src/sound.rs:1:64
[INFO] [stdout]   |
[INFO] [stdout] 1 | use cpal::{Device, SupportedStreamConfig, traits::DeviceTrait, traits::StreamTrait};
[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: `Stream`
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use cpal::{Stream, traits::{DeviceTrait, HostTrait, StreamTrait}};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Key`
[INFO] [stdout]   --> src/main.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use rdev::{Key};
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sample_rate`
[INFO] [stdout]   --> src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let sample_rate = config.sample_rate() as f32;
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sample_rate`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channels`
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let channels = config.channels() as usize;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/key.rs:50:36
[INFO] [stdout]    |
[INFO] [stdout] 50 |             notes[i*12+j].octave = (i as u8);
[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] 50 -             notes[i*12+j].octave = (i as u8);
[INFO] [stdout] 50 +             notes[i*12+j].octave = i as u8;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/f.rs:11:16
[INFO] [stdout]    |
[INFO] [stdout] 11 |         y[i] = (meval::eval_str(&copy).unwrap() as f32);
[INFO] [stdout]    |                ^                                      ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 11 -         y[i] = (meval::eval_str(&copy).unwrap() as f32);
[INFO] [stdout] 11 +         y[i] = meval::eval_str(&copy).unwrap() as f32;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `traits::StreamTrait`
[INFO] [stdout]  --> src/sound.rs:1:64
[INFO] [stdout]   |
[INFO] [stdout] 1 | use cpal::{Device, SupportedStreamConfig, traits::DeviceTrait, traits::StreamTrait};
[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: `Stream`
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use cpal::{Stream, traits::{DeviceTrait, HostTrait, StreamTrait}};
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Key`
[INFO] [stdout]   --> src/main.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | use rdev::{Key};
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     eframe::run_native("sinth", native_options, Box::new(|cc| Ok(Box::new(App::new(cc, device, config)))));
[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] 25 |     let _ = eframe::run_native("sinth", native_options, Box::new(|cc| Ok(Box::new(App::new(cc, device, config)))));
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sample_rate`
[INFO] [stdout]   --> src/main.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     let sample_rate = config.sample_rate() as f32;
[INFO] [stdout]    |         ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sample_rate`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channels`
[INFO] [stdout]   --> src/main.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let channels = config.channels() as usize;
[INFO] [stdout]    |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     eframe::run_native("sinth", native_options, Box::new(|cc| Ok(Box::new(App::new(cc, device, config)))));
[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] 25 |     let _ = eframe::run_native("sinth", native_options, Box::new(|cc| Ok(Box::new(App::new(cc, device, config)))));
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: glutin v0.32.3, glutin-winit v0.5.0, meval v0.2.0, nom v1.2.4, winit v0.30.13
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "1d2354b944a51b1e578f971553f7c8b2456762bd75a9e3ce0275a8f69c943eec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d2354b944a51b1e578f971553f7c8b2456762bd75a9e3ce0275a8f69c943eec", kill_on_drop: false }`
[INFO] [stdout] 1d2354b944a51b1e578f971553f7c8b2456762bd75a9e3ce0275a8f69c943eec
