[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] ee092678d833e040d172b6c9aedd166cba7eee68
[INFO] testing dritory/synthseq against 1.75.0 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdritory%2Fsynthseq" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dritory/synthseq on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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-0-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/raphlinus/synthesizer-io`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 976d65936daaf7fdffa19bac5934359148ea7e75580ff69adedc761379fde19a
[INFO] running `Command { std: "docker" "start" "-a" "976d65936daaf7fdffa19bac5934359148ea7e75580ff69adedc761379fde19a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "976d65936daaf7fdffa19bac5934359148ea7e75580ff69adedc761379fde19a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "976d65936daaf7fdffa19bac5934359148ea7e75580ff69adedc761379fde19a", kill_on_drop: false }`
[INFO] [stdout] 976d65936daaf7fdffa19bac5934359148ea7e75580ff69adedc761379fde19a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71e261d1774a80267b7d696168d15f598c953aa335d802f72a40e78f67e3e37f
[INFO] running `Command { std: "docker" "start" "-a" "71e261d1774a80267b7d696168d15f598c953aa335d802f72a40e78f67e3e37f", kill_on_drop: false }`
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[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling cpal v0.13.3
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[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
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[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling num_cpus v1.13.0
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[INFO] [stderr]    Compiling bus v2.2.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling synthesizer-io-core v0.1.0 (https://github.com/raphlinus/synthesizer-io#a957c782)
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
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[INFO] [stderr]    Compiling alsa v0.4.3
[INFO] [stderr]    Compiling serialport v4.0.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling alsa v0.5.0
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling midir v0.7.0
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[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `time`
[INFO] [stdout]   --> src/engine.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use time;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Note`
[INFO] [stdout]   --> src/engine.rs:22:65
[INFO] [stdout]    |
[INFO] [stdout] 22 | use synthesizer_io_core::graph::{IntoBoxedSlice, Message, Node, Note, SetParam};
[INFO] [stdout]    |                                                                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ConnectError`, `MidiInputConnection`
[INFO] [stdout]  --> src/midi.rs:6:39
[INFO] [stdout]   |
[INFO] [stdout] 6 | use midir::{MidiInput, MidiInputPort, MidiInputConnection, ConnectError};
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Message`, `SetParam`
[INFO] [stdout]  --> src/midi.rs:7:34
[INFO] [stdout]   |
[INFO] [stdout] 7 | use synthesizer_io_core::graph::{Message, SetParam};
[INFO] [stdout]   |                                  ^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, `mpsc`
[INFO] [stdout]   --> src/midi.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::{Arc, Mutex, mpsc};
[INFO] [stdout]    |                 ^^^  ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ControlMap`
[INFO] [stdout]  --> src/note.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::engine::{ControlMap, Engine};
[INFO] [stdout]   |                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc`
[INFO] [stdout]  --> src/note.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `synthesizer_io_core::graph::Message`
[INFO] [stdout]  --> src/sequencer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use synthesizer_io_core::graph::Message;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `synthesizer_io_core::modules`
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | use synthesizer_io_core::modules;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IntoBoxedSlice`, `Message`, `Node`, `Note`, `SetParam`
[INFO] [stdout]   --> src/main.rs:35:34
[INFO] [stdout]    |
[INFO] [stdout] 35 | use synthesizer_io_core::graph::{IntoBoxedSlice, Message, Node, Note, SetParam};
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^  ^^^^^^^  ^^^^  ^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Module`
[INFO] [stdout]   --> src/main.rs:36:35
[INFO] [stdout]    |
[INFO] [stdout] 36 | use synthesizer_io_core::module::{Module, N_SAMPLES_PER_CHUNK};
[INFO] [stdout]    |                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `synthesizer_io_core::queue::Sender`
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use synthesizer_io_core::queue::Sender;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use std::error::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]   --> src/main.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | use time::{Duration, Instant};
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NoteEvent`
[INFO] [stdout]   --> src/main.rs:47:24
[INFO] [stdout]    |
[INFO] [stdout] 47 | use note::{NoteModule, NoteEvent};
[INFO] [stdout]    |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Serial`
[INFO] [stdout]   --> src/main.rs:49:14
[INFO] [stdout]    |
[INFO] [stdout] 49 | use serial::{Serial};
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `time::precise_time_ns`: Use `OffsetDateTime::now() - OffsetDateTime::unix_epoch()` to get a `Duration` since a known epoch.
[INFO] [stdout]    --> src/main.rs:186:39
[INFO] [stdout]     |
[INFO] [stdout] 186 |             let mut timestamp = time::precise_time_ns();
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |             let mut control_map = self.core.init_controls();
[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: unused variable: `channel`
[INFO] [stdout]   --> src/midi.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let channel = engine.get_current_channel();
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sequencer.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut notes = &mut self.scheduled_notes;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `engine`
[INFO] [stdout]   --> src/sequencer.rs:69:28
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn tock(&mut self, engine: &mut Engine, note_module: &mut NoteModule) {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_engine`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `note_module`
[INFO] [stdout]   --> src/sequencer.rs:69:49
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn tock(&mut self, engine: &mut Engine, note_module: &mut NoteModule) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_note_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/serial.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut i = 0;
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_channel`
[INFO] [stdout]   --> src/serial.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let current_channel = engine.get_current_channel();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `control_map`
[INFO] [stdout]   --> src/serial.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let control_map : ControlMap = engine.get_current_control_map();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_control_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `note_module`
[INFO] [stdout]   --> src/serial.rs:15:39
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn dispatch_serial(&mut self, note_module : &mut NoteModule, engine: &mut Engine, serial_buf: &[u8], ts: u64) {
[INFO] [stdout]    |                                       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_note_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ts`
[INFO] [stdout]   --> src/serial.rs:15:110
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn dispatch_serial(&mut self, note_module : &mut NoteModule, engine: &mut Engine, serial_buf: &[u8], ts: u64) {
[INFO] [stdout]    |                                                                                                              ^^ help: if this is intentional, prefix it with an underscore: `_ts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/serial.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut i = 0;
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctrl_ch_tx`
[INFO] [stdout]   --> src/main.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let (ctrl_ch_tx, ctrl_ch_rx) = mpsc::channel::<CtrlEvent>();
[INFO] [stdout]    |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ctrl_ch_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `engine_cl`
[INFO] [stdout]    --> src/main.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let engine_cl = engine.clone();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_engine_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `note_module_cl`
[INFO] [stdout]    --> src/main.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let note_module_cl = note_module.clone();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_note_module_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctrl_event`
[INFO] [stdout]    --> src/main.rs:132:13
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let ctrl_event = ctrl_ch.recv().unwrap();
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ctrl_event`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let mut engine_cl = engine.clone();
[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/main.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let mut note_module_cl = note_module.clone();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `midi`
[INFO] [stdout]    --> src/main.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |     let mut midi = Midi::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_midi`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     let mut midi = Midi::new();
[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/main.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let mut in_port = Midi::find_midi_port(&midi_in).unwrap();
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `info`
[INFO] [stdout]    --> src/main.rs:182:33
[INFO] [stdout]     |
[INFO] [stdout] 182 |         move |data: &mut [f32], info: &cpal::OutputCallbackInfo| {
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/main.rs:203:15
[INFO] [stdout]     |
[INFO] [stdout] 203 |         move |err| {
[INFO] [stdout]     |               ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |             let mut buf_slice = data;
[INFO] [stdout]     |                 ----^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NodeId` is never used
[INFO] [stdout]   --> src/engine.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 | 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 `ModuleType` is never used
[INFO] [stdout]   --> src/engine.rs:46:10
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub enum ModuleType {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rx` is never read
[INFO] [stdout]   --> src/engine.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Core {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 53 |     sample_rate: f32,
[INFO] [stdout] 54 |     rx: Receiver<Message>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rx` and `tx` are never read
[INFO] [stdout]   --> src/engine.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct MonitorQueues {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 82 |     rx: Receiver<Vec<f32>>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 83 |     tx: Sender<Vec<f32>>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `init_monosynth`, `poll_rx`, `poll_monitor`, `instantiate_module`, and `set_outputs` are never used
[INFO] [stdout]    --> src/engine.rs:101:12
[INFO] [stdout]     |
[INFO] [stdout] 86  | impl Engine {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn init_monosynth(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |     pub fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn poll_monitor(&mut self) -> Vec<f32> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |     pub fn instantiate_module(&mut self, node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 158 |     pub fn set_outputs(&mut self, outputs: &[usize]) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `poll_rx`, `poll_monitor`, and `instantiate_module` are never used
[INFO] [stdout]    --> src/engine.rs:303:8
[INFO] [stdout]     |
[INFO] [stdout] 196 | impl Core {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 303 |     fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 307 |     fn poll_monitor(&self) -> Vec<f32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 325 |     fn instantiate_module(&mut self, _node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `setup_midi_connection` is never used
[INFO] [stdout]    --> src/midi.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout] 18  | impl Midi {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 104 |     pub fn setup_midi_connection(){
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_next_step` and `get_current_steps` are never used
[INFO] [stdout]   --> src/sequencer.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Sequencer {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     fn get_next_step(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn get_current_steps(&self) -> Notes {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Serial` is never constructed
[INFO] [stdout]  --> src/serial.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Serial {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `dispatch_serial` are never used
[INFO] [stdout]   --> src/serial.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Serial {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Serial {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn dispatch_serial(&mut self, note_module : &mut NoteModule, engine: &mut Engine, serial_buf: &[u8], ts: u64) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/serial.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 51 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.65s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[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" "71e261d1774a80267b7d696168d15f598c953aa335d802f72a40e78f67e3e37f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71e261d1774a80267b7d696168d15f598c953aa335d802f72a40e78f67e3e37f", kill_on_drop: false }`
[INFO] [stdout] 71e261d1774a80267b7d696168d15f598c953aa335d802f72a40e78f67e3e37f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8298e3cb04c79e2ef72630d05a0bbedc8ff70795676ddcf29c9481afb6cecf5b
[INFO] running `Command { std: "docker" "start" "-a" "8298e3cb04c79e2ef72630d05a0bbedc8ff70795676ddcf29c9481afb6cecf5b", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `time`
[INFO] [stdout]   --> src/engine.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use time;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Note`
[INFO] [stdout]   --> src/engine.rs:22:65
[INFO] [stdout]    |
[INFO] [stdout] 22 | use synthesizer_io_core::graph::{IntoBoxedSlice, Message, Node, Note, SetParam};
[INFO] [stdout]    |                                                                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ConnectError`, `MidiInputConnection`
[INFO] [stdout]  --> src/midi.rs:6:39
[INFO] [stdout]   |
[INFO] [stdout] 6 | use midir::{MidiInput, MidiInputPort, MidiInputConnection, ConnectError};
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Message`, `SetParam`
[INFO] [stdout]  --> src/midi.rs:7:34
[INFO] [stdout]   |
[INFO] [stdout] 7 | use synthesizer_io_core::graph::{Message, SetParam};
[INFO] [stdout]   |                                  ^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Arc`, `Mutex`, `mpsc`
[INFO] [stdout]   --> src/midi.rs:12:17
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::sync::{Arc, Mutex, mpsc};
[INFO] [stdout]    |                 ^^^  ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ControlMap`
[INFO] [stdout]  --> src/note.rs:1:21
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::engine::{ControlMap, Engine};
[INFO] [stdout]   |                     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::mpsc`
[INFO] [stdout]  --> src/note.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::sync::mpsc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `synthesizer_io_core::graph::Message`
[INFO] [stdout]  --> src/sequencer.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use synthesizer_io_core::graph::Message;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `synthesizer_io_core::modules`
[INFO] [stdout]   --> src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 | use synthesizer_io_core::modules;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IntoBoxedSlice`, `Message`, `Node`, `Note`, `SetParam`
[INFO] [stdout]   --> src/main.rs:35:34
[INFO] [stdout]    |
[INFO] [stdout] 35 | use synthesizer_io_core::graph::{IntoBoxedSlice, Message, Node, Note, SetParam};
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^  ^^^^^^^  ^^^^  ^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Module`
[INFO] [stdout]   --> src/main.rs:36:35
[INFO] [stdout]    |
[INFO] [stdout] 36 | use synthesizer_io_core::module::{Module, N_SAMPLES_PER_CHUNK};
[INFO] [stdout]    |                                   ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `synthesizer_io_core::queue::Sender`
[INFO] [stdout]   --> src/main.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use synthesizer_io_core::queue::Sender;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]   --> src/main.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | use std::error::Error;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Duration`
[INFO] [stdout]   --> src/main.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | use time::{Duration, Instant};
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `NoteEvent`
[INFO] [stdout]   --> src/main.rs:47:24
[INFO] [stdout]    |
[INFO] [stdout] 47 | use note::{NoteModule, NoteEvent};
[INFO] [stdout]    |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Serial`
[INFO] [stdout]   --> src/main.rs:49:14
[INFO] [stdout]    |
[INFO] [stdout] 49 | use serial::{Serial};
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `time::precise_time_ns`: Use `OffsetDateTime::now() - OffsetDateTime::unix_epoch()` to get a `Duration` since a known epoch.
[INFO] [stdout]    --> src/main.rs:186:39
[INFO] [stdout]     |
[INFO] [stdout] 186 |             let mut timestamp = time::precise_time_ns();
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |             let mut control_map = self.core.init_controls();
[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: unused variable: `channel`
[INFO] [stdout]   --> src/midi.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let channel = engine.get_current_channel();
[INFO] [stdout]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/sequencer.rs:37:13
[INFO] [stdout]    |
[INFO] [stdout] 37 |         let mut notes = &mut self.scheduled_notes;
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `engine`
[INFO] [stdout]   --> src/sequencer.rs:69:28
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn tock(&mut self, engine: &mut Engine, note_module: &mut NoteModule) {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_engine`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `note_module`
[INFO] [stdout]   --> src/sequencer.rs:69:49
[INFO] [stdout]    |
[INFO] [stdout] 69 |     pub fn tock(&mut self, engine: &mut Engine, note_module: &mut NoteModule) {
[INFO] [stdout]    |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_note_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/serial.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut i = 0;
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current_channel`
[INFO] [stdout]   --> src/serial.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let current_channel = engine.get_current_channel();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `control_map`
[INFO] [stdout]   --> src/serial.rs:18:13
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let control_map : ControlMap = engine.get_current_control_map();
[INFO] [stdout]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_control_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `note_module`
[INFO] [stdout]   --> src/serial.rs:15:39
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn dispatch_serial(&mut self, note_module : &mut NoteModule, engine: &mut Engine, serial_buf: &[u8], ts: u64) {
[INFO] [stdout]    |                                       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_note_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ts`
[INFO] [stdout]   --> src/serial.rs:15:110
[INFO] [stdout]    |
[INFO] [stdout] 15 |     pub fn dispatch_serial(&mut self, note_module : &mut NoteModule, engine: &mut Engine, serial_buf: &[u8], ts: u64) {
[INFO] [stdout]    |                                                                                                              ^^ help: if this is intentional, prefix it with an underscore: `_ts`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/serial.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |         let mut i = 0;
[INFO] [stdout]    |             ----^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctrl_ch_tx`
[INFO] [stdout]   --> src/main.rs:61:10
[INFO] [stdout]    |
[INFO] [stdout] 61 |     let (ctrl_ch_tx, ctrl_ch_rx) = mpsc::channel::<CtrlEvent>();
[INFO] [stdout]    |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ctrl_ch_tx`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `engine_cl`
[INFO] [stdout]    --> src/main.rs:129:9
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let engine_cl = engine.clone();
[INFO] [stdout]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_engine_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `note_module_cl`
[INFO] [stdout]    --> src/main.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 130 |     let note_module_cl = note_module.clone();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_note_module_cl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctrl_event`
[INFO] [stdout]    --> src/main.rs:132:13
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let ctrl_event = ctrl_ch.recv().unwrap();
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ctrl_event`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:88:13
[INFO] [stdout]    |
[INFO] [stdout] 88 |         let mut engine_cl = engine.clone();
[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/main.rs:89:13
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let mut note_module_cl = note_module.clone();
[INFO] [stdout]    |             ----^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `midi`
[INFO] [stdout]    --> src/main.rs:142:13
[INFO] [stdout]     |
[INFO] [stdout] 142 |     let mut midi = Midi::new();
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_midi`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     let mut midi = Midi::new();
[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/main.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let mut in_port = Midi::find_midi_port(&midi_in).unwrap();
[INFO] [stdout]     |         ----^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `info`
[INFO] [stdout]    --> src/main.rs:182:33
[INFO] [stdout]     |
[INFO] [stdout] 182 |         move |data: &mut [f32], info: &cpal::OutputCallbackInfo| {
[INFO] [stdout]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_info`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `err`
[INFO] [stdout]    --> src/main.rs:203:15
[INFO] [stdout]     |
[INFO] [stdout] 203 |         move |err| {
[INFO] [stdout]     |               ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:184:17
[INFO] [stdout]     |
[INFO] [stdout] 184 |             let mut buf_slice = data;
[INFO] [stdout]     |                 ----^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `NodeId` is never used
[INFO] [stdout]   --> src/engine.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 | 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 `ModuleType` is never used
[INFO] [stdout]   --> src/engine.rs:46:10
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub enum ModuleType {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rx` is never read
[INFO] [stdout]   --> src/engine.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 52 | struct Core {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] 53 |     sample_rate: f32,
[INFO] [stdout] 54 |     rx: Receiver<Message>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `rx` and `tx` are never read
[INFO] [stdout]   --> src/engine.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 81 | struct MonitorQueues {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 82 |     rx: Receiver<Vec<f32>>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 83 |     tx: Sender<Vec<f32>>,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `init_monosynth`, `poll_rx`, `poll_monitor`, `instantiate_module`, and `set_outputs` are never used
[INFO] [stdout]    --> src/engine.rs:101:12
[INFO] [stdout]     |
[INFO] [stdout] 86  | impl Engine {
[INFO] [stdout]     | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 101 |     pub fn init_monosynth(&mut self) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 138 |     pub fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 |     pub fn poll_monitor(&mut self) -> Vec<f32> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 153 |     pub fn instantiate_module(&mut self, node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 158 |     pub fn set_outputs(&mut self, outputs: &[usize]) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `poll_rx`, `poll_monitor`, and `instantiate_module` are never used
[INFO] [stdout]    --> src/engine.rs:303:8
[INFO] [stdout]     |
[INFO] [stdout] 196 | impl Core {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 303 |     fn poll_rx(&mut self) -> usize {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 307 |     fn poll_monitor(&self) -> Vec<f32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 325 |     fn instantiate_module(&mut self, _node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `setup_midi_connection` is never used
[INFO] [stdout]    --> src/midi.rs:104:12
[INFO] [stdout]     |
[INFO] [stdout] 18  | impl Midi {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 104 |     pub fn setup_midi_connection(){
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_next_step` and `get_current_steps` are never used
[INFO] [stdout]   --> src/sequencer.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | impl Sequencer {
[INFO] [stdout]    | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     fn get_next_step(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub fn get_current_steps(&self) -> Notes {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Serial` is never constructed
[INFO] [stdout]  --> src/serial.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Serial {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `dispatch_serial` are never used
[INFO] [stdout]   --> src/serial.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl Serial {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new() -> Serial {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub fn dispatch_serial(&mut self, note_module : &mut NoteModule, engine: &mut Engine, serial_buf: &[u8], ts: u64) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/serial.rs:24:4
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 51 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[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" "8298e3cb04c79e2ef72630d05a0bbedc8ff70795676ddcf29c9481afb6cecf5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8298e3cb04c79e2ef72630d05a0bbedc8ff70795676ddcf29c9481afb6cecf5b", kill_on_drop: false }`
[INFO] [stdout] 8298e3cb04c79e2ef72630d05a0bbedc8ff70795676ddcf29c9481afb6cecf5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3b2b24a219eface8239ec9b7644da5d689a916076773c7ba832c668aeace8f8f
[INFO] running `Command { std: "docker" "start" "-a" "3b2b24a219eface8239ec9b7644da5d689a916076773c7ba832c668aeace8f8f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `time`
[INFO] [stderr]   --> src/engine.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use time;
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Note`
[INFO] [stderr]   --> src/engine.rs:22:65
[INFO] [stderr]    |
[INFO] [stderr] 22 | use synthesizer_io_core::graph::{IntoBoxedSlice, Message, Node, Note, SetParam};
[INFO] [stderr]    |                                                                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ConnectError`, `MidiInputConnection`
[INFO] [stderr]  --> src/midi.rs:6:39
[INFO] [stderr]   |
[INFO] [stderr] 6 | use midir::{MidiInput, MidiInputPort, MidiInputConnection, ConnectError};
[INFO] [stderr]   |                                       ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Message`, `SetParam`
[INFO] [stderr]  --> src/midi.rs:7:34
[INFO] [stderr]   |
[INFO] [stderr] 7 | use synthesizer_io_core::graph::{Message, SetParam};
[INFO] [stderr]   |                                  ^^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Arc`, `Mutex`, `mpsc`
[INFO] [stderr]   --> src/midi.rs:12:17
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::sync::{Arc, Mutex, mpsc};
[INFO] [stderr]    |                 ^^^  ^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ControlMap`
[INFO] [stderr]  --> src/note.rs:1:21
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::engine::{ControlMap, Engine};
[INFO] [stderr]   |                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc`
[INFO] [stderr]  --> src/note.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::sync::mpsc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `synthesizer_io_core::graph::Message`
[INFO] [stderr]  --> src/sequencer.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use synthesizer_io_core::graph::Message;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `synthesizer_io_core::modules`
[INFO] [stderr]   --> src/main.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | use synthesizer_io_core::modules;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `IntoBoxedSlice`, `Message`, `Node`, `Note`, `SetParam`
[INFO] [stderr]   --> src/main.rs:35:34
[INFO] [stderr]    |
[INFO] [stderr] 35 | use synthesizer_io_core::graph::{IntoBoxedSlice, Message, Node, Note, SetParam};
[INFO] [stderr]    |                                  ^^^^^^^^^^^^^^  ^^^^^^^  ^^^^  ^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Module`
[INFO] [stderr]   --> src/main.rs:36:35
[INFO] [stderr]    |
[INFO] [stderr] 36 | use synthesizer_io_core::module::{Module, N_SAMPLES_PER_CHUNK};
[INFO] [stderr]    |                                   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `synthesizer_io_core::queue::Sender`
[INFO] [stderr]   --> src/main.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 | use synthesizer_io_core::queue::Sender;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 | use std::error::Error;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]   --> src/main.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 | use time::{Duration, Instant};
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `NoteEvent`
[INFO] [stderr]   --> src/main.rs:47:24
[INFO] [stderr]    |
[INFO] [stderr] 47 | use note::{NoteModule, NoteEvent};
[INFO] [stderr]    |                        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Serial`
[INFO] [stderr]   --> src/main.rs:49:14
[INFO] [stderr]    |
[INFO] [stderr] 49 | use serial::{Serial};
[INFO] [stderr]    |              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated function `time::precise_time_ns`: Use `OffsetDateTime::now() - OffsetDateTime::unix_epoch()` to get a `Duration` since a known epoch.
[INFO] [stderr]    --> src/main.rs:186:39
[INFO] [stderr]     |
[INFO] [stderr] 186 |             let mut timestamp = time::precise_time_ns();
[INFO] [stderr]     |                                       ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/engine.rs:104:17
[INFO] [stderr]     |
[INFO] [stderr] 104 |             let mut control_map = self.core.init_controls();
[INFO] [stderr]     |                 ----^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `channel`
[INFO] [stderr]   --> src/midi.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let channel = engine.get_current_channel();
[INFO] [stderr]    |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/sequencer.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let mut notes = &mut self.scheduled_notes;
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `engine`
[INFO] [stderr]   --> src/sequencer.rs:69:28
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn tock(&mut self, engine: &mut Engine, note_module: &mut NoteModule) {
[INFO] [stderr]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_engine`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `note_module`
[INFO] [stderr]   --> src/sequencer.rs:69:49
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn tock(&mut self, engine: &mut Engine, note_module: &mut NoteModule) {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_note_module`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/serial.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let mut i = 0;
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current_channel`
[INFO] [stderr]   --> src/serial.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         let current_channel = engine.get_current_channel();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current_channel`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `control_map`
[INFO] [stderr]   --> src/serial.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |         let control_map : ControlMap = engine.get_current_control_map();
[INFO] [stderr]    |             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_control_map`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `note_module`
[INFO] [stderr]   --> src/serial.rs:15:39
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn dispatch_serial(&mut self, note_module : &mut NoteModule, engine: &mut Engine, serial_buf: &[u8], ts: u64) {
[INFO] [stderr]    |                                       ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_note_module`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ts`
[INFO] [stderr]   --> src/serial.rs:15:110
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn dispatch_serial(&mut self, note_module : &mut NoteModule, engine: &mut Engine, serial_buf: &[u8], ts: u64) {
[INFO] [stderr]    |                                                                                                              ^^ help: if this is intentional, prefix it with an underscore: `_ts`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/serial.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let mut i = 0;
[INFO] [stderr]    |             ----^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctrl_ch_tx`
[INFO] [stderr]   --> src/main.rs:61:10
[INFO] [stderr]    |
[INFO] [stderr] 61 |     let (ctrl_ch_tx, ctrl_ch_rx) = mpsc::channel::<CtrlEvent>();
[INFO] [stderr]    |          ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ctrl_ch_tx`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `engine_cl`
[INFO] [stderr]    --> src/main.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |     let engine_cl = engine.clone();
[INFO] [stderr]     |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_engine_cl`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `note_module_cl`
[INFO] [stderr]    --> src/main.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 130 |     let note_module_cl = note_module.clone();
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_note_module_cl`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctrl_event`
[INFO] [stderr]    --> src/main.rs:132:13
[INFO] [stderr]     |
[INFO] [stderr] 132 |         let ctrl_event = ctrl_ch.recv().unwrap();
[INFO] [stderr]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ctrl_event`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:88:13
[INFO] [stderr]    |
[INFO] [stderr] 88 |         let mut engine_cl = engine.clone();
[INFO] [stderr]    |             ----^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:89:13
[INFO] [stderr]    |
[INFO] [stderr] 89 |         let mut note_module_cl = note_module.clone();
[INFO] [stderr]    |             ----^^^^^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `midi`
[INFO] [stderr]    --> src/main.rs:142:13
[INFO] [stderr]     |
[INFO] [stderr] 142 |     let mut midi = Midi::new();
[INFO] [stderr]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_midi`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |     let mut midi = Midi::new();
[INFO] [stderr]     |         ----^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:143:9
[INFO] [stderr]     |
[INFO] [stderr] 143 |     let mut in_port = Midi::find_midi_port(&midi_in).unwrap();
[INFO] [stderr]     |         ----^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `info`
[INFO] [stderr]    --> src/main.rs:182:33
[INFO] [stderr]     |
[INFO] [stderr] 182 |         move |data: &mut [f32], info: &cpal::OutputCallbackInfo| {
[INFO] [stderr]     |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_info`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]    --> src/main.rs:203:15
[INFO] [stderr]     |
[INFO] [stderr] 203 |         move |err| {
[INFO] [stderr]     |               ^^^ help: if this is intentional, prefix it with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:184:17
[INFO] [stderr]     |
[INFO] [stderr] 184 |             let mut buf_slice = data;
[INFO] [stderr]     |                 ----^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `NodeId` is never used
[INFO] [stderr]   --> src/engine.rs:42:10
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub type NodeId = usize;
[INFO] [stderr]    |          ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `ModuleType` is never used
[INFO] [stderr]   --> src/engine.rs:46:10
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub enum ModuleType {
[INFO] [stderr]    |          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `rx` is never read
[INFO] [stderr]   --> src/engine.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 52 | struct Core {
[INFO] [stderr]    |        ---- field in this struct
[INFO] [stderr] 53 |     sample_rate: f32,
[INFO] [stderr] 54 |     rx: Receiver<Message>,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `rx` and `tx` are never read
[INFO] [stderr]   --> src/engine.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 81 | struct MonitorQueues {
[INFO] [stderr]    |        ------------- fields in this struct
[INFO] [stderr] 82 |     rx: Receiver<Vec<f32>>,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 83 |     tx: Sender<Vec<f32>>,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `init_monosynth`, `poll_rx`, `poll_monitor`, `instantiate_module`, and `set_outputs` are never used
[INFO] [stderr]    --> src/engine.rs:101:12
[INFO] [stderr]     |
[INFO] [stderr] 86  | impl Engine {
[INFO] [stderr]     | ----------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 101 |     pub fn init_monosynth(&mut self) {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 138 |     pub fn poll_rx(&mut self) -> usize {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 143 |     pub fn poll_monitor(&mut self) -> Vec<f32> {
[INFO] [stderr]     |            ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 153 |     pub fn instantiate_module(&mut self, node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 158 |     pub fn set_outputs(&mut self, outputs: &[usize]) {
[INFO] [stderr]     |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `poll_rx`, `poll_monitor`, and `instantiate_module` are never used
[INFO] [stderr]    --> src/engine.rs:303:8
[INFO] [stderr]     |
[INFO] [stderr] 196 | impl Core {
[INFO] [stderr]     | --------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 303 |     fn poll_rx(&mut self) -> usize {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 307 |     fn poll_monitor(&self) -> Vec<f32> {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 325 |     fn instantiate_module(&mut self, _node_id: NodeId, ty: ModuleType) -> usize {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `setup_midi_connection` is never used
[INFO] [stderr]    --> src/midi.rs:104:12
[INFO] [stderr]     |
[INFO] [stderr] 18  | impl Midi {
[INFO] [stderr]     | --------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 104 |     pub fn setup_midi_connection(){
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: methods `get_next_step` and `get_current_steps` are never used
[INFO] [stderr]   --> src/sequencer.rs:84:8
[INFO] [stderr]    |
[INFO] [stderr] 21 | impl Sequencer {
[INFO] [stderr]    | -------------- methods in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 84 |     fn get_next_step(&self) -> usize {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 91 |     pub fn get_current_steps(&self) -> Notes {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Serial` is never constructed
[INFO] [stderr]  --> src/serial.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Serial {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new` and `dispatch_serial` are never used
[INFO] [stderr]   --> src/serial.rs:12:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | impl Serial {
[INFO] [stderr]    | ----------- associated items in this implementation
[INFO] [stderr] 12 |     pub fn new() -> Serial {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 15 |     pub fn dispatch_serial(&mut self, note_module : &mut NoteModule, engine: &mut Engine, serial_buf: &[u8], ts: u64) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]   --> src/serial.rs:24:4
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust` (bin "rust" test) generated 51 warnings (run `cargo fix --bin "rust" --tests` to apply 39 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.24
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust-772530bcec65e118)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3b2b24a219eface8239ec9b7644da5d689a916076773c7ba832c668aeace8f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b2b24a219eface8239ec9b7644da5d689a916076773c7ba832c668aeace8f8f", kill_on_drop: false }`
[INFO] [stdout] 3b2b24a219eface8239ec9b7644da5d689a916076773c7ba832c668aeace8f8f
[INFO] testing dritory/synthseq against beta-2024-01-09 for beta-1.76-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdritory%2Fsynthseq" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dritory/synthseq on toolchain beta-2024-01-09
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-01-09" "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-0-tc2/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-01-09" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-01-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aeb5575b5fa28daaf359b0487fb54422451f8fdd933aa5416669820e94fffece
[INFO] running `Command { std: "docker" "start" "-a" "aeb5575b5fa28daaf359b0487fb54422451f8fdd933aa5416669820e94fffece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aeb5575b5fa28daaf359b0487fb54422451f8fdd933aa5416669820e94fffece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeb5575b5fa28daaf359b0487fb54422451f8fdd933aa5416669820e94fffece", kill_on_drop: false }`
[INFO] [stdout] aeb5575b5fa28daaf359b0487fb54422451f8fdd933aa5416669820e94fffece
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-01-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 159120bce8a2ca7b13eada8a9bf0a922e09f71db47faa80cd319768b348756b8
[INFO] running `Command { std: "docker" "start" "-a" "159120bce8a2ca7b13eada8a9bf0a922e09f71db47faa80cd319768b348756b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling dasp_sample v0.11.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling dasp_ring_buffer v0.11.0
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.24/src/serialize.rs:1155:5
[INFO] [stdout]      |
[INFO] [stdout] 1155 |     fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     the parameter type `T` must be valid for the static lifetime...
[INFO] [stdout]      |     ...so that the type `T` will meet its required lifetime bounds...
[INFO] [stdout]      |
[INFO] [stdout] note: ...that is required by this bound
[INFO] [stdout]     --> /rustc/650745ceb2ae60e04f8cd7bfb671fc37239533e4/library/alloc/src/borrow.rs:180:30
[INFO] [stdout] help: consider adding an explicit lifetime bound
[INFO] [stdout]      |
[INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T>
[INFO] [stdout]      |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dasp_frame v0.11.0
[INFO] [stderr]    Compiling dasp_window v0.11.1
[INFO] [stderr]    Compiling cpal v0.13.3
[INFO] [stderr]    Compiling atomic-option v0.1.2
[INFO] [stderr]    Compiling memalloc v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling alsa-sys v0.3.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling time v0.2.27
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "159120bce8a2ca7b13eada8a9bf0a922e09f71db47faa80cd319768b348756b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "159120bce8a2ca7b13eada8a9bf0a922e09f71db47faa80cd319768b348756b8", kill_on_drop: false }`
[INFO] [stdout] 159120bce8a2ca7b13eada8a9bf0a922e09f71db47faa80cd319768b348756b8
