From 26f41435debc92e4b05275fb4e0f705dbb25bfdb Mon Sep 17 00:00:00 2001
From: Eliza Weisman <eliza@buoyant.io>
Date: Sat, 25 Sep 2021 12:23:54 -0700
Subject: [PATCH] chore: update to nightly-2021-09-22, fix clippy (#115)

This just updates Rust to the latest nightly, and fixes a new Clippy
lint on that nightly.
---
 rust-toolchain.toml  | 2 +-
 util/src/io/impls.rs | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 22cdba17..0d1cbdaa 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,5 +1,5 @@
 [toolchain]
-channel = "nightly-2021-06-05"
+channel = "nightly-2021-09-22"
 components = [
     "clippy",
     "rustfmt",
diff --git a/util/src/io/impls.rs b/util/src/io/impls.rs
index ad226ac2..7ade94a3 100644
--- a/util/src/io/impls.rs
+++ b/util/src/io/impls.rs
@@ -258,7 +258,7 @@ impl Write for &mut [u8] {
     #[inline]
     fn write(&mut self, data: &[u8]) -> io::Result<usize> {
         let amt = cmp::min(data.len(), self.len());
-        let (a, b) = mem::replace(self, &mut []).split_at_mut(amt);
+        let (a, b) = mem::take(self).split_at_mut(amt);
         a.copy_from_slice(&data[..amt]);
         *self = b;
         Ok(amt)