cargo fmt; make test predictable

Events with same timestamp may go in different orders.

src/audio_setup.rs

@@ -1,9 +1,9 @@
-use std::sync::{Arc, mpsc, Mutex};
 use std::sync::mpsc::Sender;
+use std::sync::{mpsc, Arc, Mutex};
 
-use cpal::{BufferSize, StreamConfig};
-use cpal::SampleFormat::F32;
 use cpal::traits::{DeviceTrait, HostTrait};
+use cpal::SampleFormat::F32;
+use cpal::{BufferSize, StreamConfig};
 use midir::{MidiInput, MidiInputConnection};
 use midly::live::LiveEvent;
 use rodio::OutputStream;

src/midi.rs

@@ -1,11 +1,11 @@
 use std::collections::BinaryHeap;
 use std::time::Duration;
 
-use midly::{Format, Header, MidiMessage, Smf, Timing, Track, TrackEvent};
 use midly::io::WriteResult;
 use midly::live::LiveEvent;
-use midly::MidiMessage::Controller;
 use midly::num::u15;
+use midly::MidiMessage::Controller;
+use midly::{Format, Header, MidiMessage, Smf, Timing, Track, TrackEvent};
 
 use crate::common::Time;
 use crate::engine::{EngineEvent, EventSource};

src/track_edit.rs

@@ -266,7 +266,7 @@ mod tests {
     fn check_set_damper_to() {
         let mut track = make_test_track();
         let mut changeset = Changeset::empty();
-        set_damper_to(&mut track, &mut changeset, (14, 17), true);
+        set_damper_to(&mut track, &mut changeset, (13, 17), true);
         track.patch(&changeset);
 
         let expected_ids: Vec<EventId> = vec![10, 0, 20, 30, 1, 40];