Remove redundant imports

Author: shepmaster

compiler/base/orchestrator/src/coordinator.rs

@@ -2697,12 +2697,8 @@ fn spawn_io_queue(stdin: ChildStdin, stdout: ChildStdout, token: CancellationTok
 #[cfg(test)]
 mod tests {
     use assertables::*;
-    use futures::{
-        future::{join, try_join_all},
-        Future, FutureExt,
-    };
-    use once_cell::sync::Lazy;
-    use std::{env, sync::Once, time::Duration};
+    use futures::future::{join, try_join_all};
+    use std::{env, sync::Once};
     use tempdir::TempDir;
     use tokio::sync::{OwnedSemaphorePermit, Semaphore};
 

compiler/base/orchestrator/src/worker.rs

@@ -816,7 +816,6 @@ pub enum ProcessError {
 
 #[cfg(target_os = "macos")]
 mod stats {
-    use libc;
     use mach2::mach_time::{mach_timebase_info, mach_timebase_info_data_t};
     use snafu::prelude::*;
     use std::mem::MaybeUninit;
@@ -1132,7 +1131,6 @@ pub enum Utf8BufReaderError {
 mod test {
     use std::{
         collections::VecDeque,
-        io,
         pin::Pin,
         task::{Context, Poll},
     };

ui/src/metrics.rs

@@ -1,9 +1,8 @@
 use lazy_static::lazy_static;
 use orchestrator::coordinator::{self, Channel, CompileTarget, CrateType, Edition, Mode};
 use prometheus::{
-    self, register_histogram, register_histogram_vec, register_int_counter,
-    register_int_counter_vec, register_int_gauge, Histogram, HistogramVec, IntCounter,
-    IntCounterVec, IntGauge,
+    register_histogram, register_histogram_vec, register_int_counter, register_int_counter_vec,
+    register_int_gauge, Histogram, HistogramVec, IntCounter, IntCounterVec, IntGauge,
 };
 use std::{
     future::Future,