[INFO] cloning repository https://github.com/dritory/synthseq
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dritory/synthseq" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdritory%2Fsynthseq", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdritory%2Fsynthseq'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd178af477d0d21310c99840299ffe33a55dfd33
[INFO] checking dritory/synthseq against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdritory%2Fsynthseq" "/workspace/builds/worker-95/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-95/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dritory/synthseq on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dritory/synthseq
[INFO] finished tweaking git repo https://github.com/dritory/synthseq
[INFO] tweaked toml for git repo https://github.com/dritory/synthseq written to /workspace/builds/worker-95/source/Cargo.toml
[INFO] crate git repo https://github.com/dritory/synthseq already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/raphlinus/synthesizer-io`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pitch_calc v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d8d1d0e28ae5646363ce94a3a9677b2bca5a265f9f69c7564537e489f8ec0ae
[INFO] running `Command { std: "docker" "start" "-a" "2d8d1d0e28ae5646363ce94a3a9677b2bca5a265f9f69c7564537e489f8ec0ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d8d1d0e28ae5646363ce94a3a9677b2bca5a265f9f69c7564537e489f8ec0ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d8d1d0e28ae5646363ce94a3a9677b2bca5a265f9f69c7564537e489f8ec0ae", kill_on_drop: false }`
[INFO] [stdout] 2d8d1d0e28ae5646363ce94a3a9677b2bca5a265f9f69c7564537e489f8ec0ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-95/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87d75f820d575f1f5bad18514d13d9984834d58255cbb798550dfc894c918429
[INFO] running `Command { std: "docker" "start" "-a" "87d75f820d575f1f5bad18514d13d9984834d58255cbb798550dfc894c918429", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr] note: Switching to Edition 2021 will enable the use of the version 2 feature resolver in Cargo.
[INFO] [stderr] This may cause some dependencies to be built with fewer features enabled than previously.
[INFO] [stderr] More information about the resolver changes may be found at https://doc.rust-lang.org/nightly/edition-guide/rust-2021/default-cargo-resolver.html
[INFO] [stderr] When building the following dependencies, the given features will no longer be used:
[INFO] [stderr] 
[INFO] [stderr]   syn v1.0.73 (as host dependency): extra-traits, full, visit
[INFO] [stderr] 
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking dasp_ring_buffer v0.11.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling cpal v0.13.3
[INFO] [stderr]     Checking memalloc v0.1.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking dasp_frame v0.11.0
[INFO] [stderr]     Checking dasp_window v0.11.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking dasp_peak v0.11.0
[INFO] [stderr]     Checking dasp_rms v0.11.0
[INFO] [stderr]     Checking dasp_interpolate v0.11.0
[INFO] [stderr]     Checking dasp_slice v0.11.0
[INFO] [stderr]     Checking dasp_envelope v0.11.0
[INFO] [stderr]     Checking dasp_signal v0.11.0
[INFO] [stderr]     Checking dasp v0.11.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking nix v0.20.0
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking synthesizer-io-core v0.1.0 (https://github.com/raphlinus/synthesizer-io#a957c782)
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking pitch_calc v0.12.0
[INFO] [stderr]     Checking alsa v0.4.3
[INFO] [stderr]     Checking alsa v0.5.0
[INFO] [stderr]     Checking midir v0.7.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking rust v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/main.rs (9 fixes)
[INFO] [stderr]        Fixed src/note.rs (2 fixes)
[INFO] [stderr]        Fixed src/engine.rs (5 fixes)
[INFO] [stdout] warning: type alias is never used: `NodeId`
[INFO] [stdout]   --> src/engine.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub type NodeId = usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ModuleType`
[INFO] [stdout]   --> src/engine.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub enum ModuleType {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rx`
[INFO] [stdout]   --> src/engine.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     rx: Receiver<Message>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rx`
[INFO] [stdout]   --> src/engine.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     rx: Receiver<Vec<f32>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tx`
[INFO] [stdout]   --> src/engine.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     tx: Sender<Vec<f32>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_monosynth`
[INFO] [stdout]   --> src/engine.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn init_monosynth(&mut self, channel_count: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_rx`
[INFO] [stdout]    --> src/engine.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_monitor`
[INFO] [stdout]    --> src/engine.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn poll_monitor(&mut self) -> Vec<f32> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate_module`
[INFO] [stdout]    --> src/engine.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn instantiate_module(&mut self, node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_outputs`
[INFO] [stdout]    --> src/engine.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn set_outputs(&mut self, outputs: &[usize]) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_rx`
[INFO] [stdout]    --> src/engine.rs:267:8
[INFO] [stdout]     |
[INFO] [stdout] 267 |     fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_monitor`
[INFO] [stdout]    --> src/engine.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn poll_monitor(&self) -> Vec<f32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate_module`
[INFO] [stdout]    --> src/engine.rs:289:8
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn instantiate_module(&mut self, _node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_NODES`
[INFO] [stdout]   --> src/main.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | const MAX_NODES : usize = 255;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CHANNELS`
[INFO] [stdout]   --> src/main.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | const CHANNELS: i32 = 2;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `NodeId`
[INFO] [stdout]   --> src/engine.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub type NodeId = usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ModuleType`
[INFO] [stdout]   --> src/engine.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub enum ModuleType {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rx`
[INFO] [stdout]   --> src/engine.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     rx: Receiver<Message>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rx`
[INFO] [stdout]   --> src/engine.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     rx: Receiver<Vec<f32>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tx`
[INFO] [stdout]   --> src/engine.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     tx: Sender<Vec<f32>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_monosynth`
[INFO] [stdout]   --> src/engine.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn init_monosynth(&mut self, channel_count: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_rx`
[INFO] [stdout]    --> src/engine.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_monitor`
[INFO] [stdout]    --> src/engine.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn poll_monitor(&mut self) -> Vec<f32> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate_module`
[INFO] [stdout]    --> src/engine.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn instantiate_module(&mut self, node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_outputs`
[INFO] [stdout]    --> src/engine.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn set_outputs(&mut self, outputs: &[usize]) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_rx`
[INFO] [stdout]    --> src/engine.rs:267:8
[INFO] [stdout]     |
[INFO] [stdout] 267 |     fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_monitor`
[INFO] [stdout]    --> src/engine.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn poll_monitor(&self) -> Vec<f32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate_module`
[INFO] [stdout]    --> src/engine.rs:289:8
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn instantiate_module(&mut self, _node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_NODES`
[INFO] [stdout]   --> src/main.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | const MAX_NODES : usize = 255;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CHANNELS`
[INFO] [stdout]   --> src/main.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | const CHANNELS: i32 = 2;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.11s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking cpal v0.13.3
[INFO] [stderr]     Checking rust v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: type alias is never used: `NodeId`
[INFO] [stdout]   --> src/engine.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub type NodeId = usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ModuleType`
[INFO] [stdout]   --> src/engine.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub enum ModuleType {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rx`
[INFO] [stdout]   --> src/engine.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     rx: Receiver<Message>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rx`
[INFO] [stdout]   --> src/engine.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     rx: Receiver<Vec<f32>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tx`
[INFO] [stdout]   --> src/engine.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     tx: Sender<Vec<f32>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_monosynth`
[INFO] [stdout]   --> src/engine.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn init_monosynth(&mut self, channel_count: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_rx`
[INFO] [stdout]    --> src/engine.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_monitor`
[INFO] [stdout]    --> src/engine.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn poll_monitor(&mut self) -> Vec<f32> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate_module`
[INFO] [stdout]    --> src/engine.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn instantiate_module(&mut self, node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_outputs`
[INFO] [stdout]    --> src/engine.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn set_outputs(&mut self, outputs: &[usize]) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_rx`
[INFO] [stdout]    --> src/engine.rs:267:8
[INFO] [stdout]     |
[INFO] [stdout] 267 |     fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_monitor`
[INFO] [stdout]    --> src/engine.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn poll_monitor(&self) -> Vec<f32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate_module`
[INFO] [stdout]    --> src/engine.rs:289:8
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn instantiate_module(&mut self, _node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_NODES`
[INFO] [stdout]   --> src/main.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | const MAX_NODES : usize = 255;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CHANNELS`
[INFO] [stdout]   --> src/main.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | const CHANNELS: i32 = 2;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `NodeId`
[INFO] [stdout]   --> src/engine.rs:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub type NodeId = usize;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ModuleType`
[INFO] [stdout]   --> src/engine.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub enum ModuleType {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rx`
[INFO] [stdout]   --> src/engine.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |     rx: Receiver<Message>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rx`
[INFO] [stdout]   --> src/engine.rs:75:5
[INFO] [stdout]    |
[INFO] [stdout] 75 |     rx: Receiver<Vec<f32>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tx`
[INFO] [stdout]   --> src/engine.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     tx: Sender<Vec<f32>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `init_monosynth`
[INFO] [stdout]   --> src/engine.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn init_monosynth(&mut self, channel_count: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_rx`
[INFO] [stdout]    --> src/engine.rs:129:12
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_monitor`
[INFO] [stdout]    --> src/engine.rs:134:12
[INFO] [stdout]     |
[INFO] [stdout] 134 |     pub fn poll_monitor(&mut self) -> Vec<f32> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate_module`
[INFO] [stdout]    --> src/engine.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn instantiate_module(&mut self, node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_outputs`
[INFO] [stdout]    --> src/engine.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn set_outputs(&mut self, outputs: &[usize]) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_rx`
[INFO] [stdout]    --> src/engine.rs:267:8
[INFO] [stdout]     |
[INFO] [stdout] 267 |     fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `poll_monitor`
[INFO] [stdout]    --> src/engine.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn poll_monitor(&self) -> Vec<f32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `instantiate_module`
[INFO] [stdout]    --> src/engine.rs:289:8
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn instantiate_module(&mut self, _node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAX_NODES`
[INFO] [stdout]   --> src/main.rs:56:1
[INFO] [stdout]    |
[INFO] [stdout] 56 | const MAX_NODES : usize = 255;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CHANNELS`
[INFO] [stdout]   --> src/main.rs:60:1
[INFO] [stdout]    |
[INFO] [stdout] 60 | const CHANNELS: i32 = 2;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.36s
[INFO] running `Command { std: "docker" "inspect" "87d75f820d575f1f5bad18514d13d9984834d58255cbb798550dfc894c918429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87d75f820d575f1f5bad18514d13d9984834d58255cbb798550dfc894c918429", kill_on_drop: false }`
[INFO] [stdout] 87d75f820d575f1f5bad18514d13d9984834d58255cbb798550dfc894c918429