Fix nightly lint causing compilation to fail

Author: rsmyth-ecmi

.github/workflows/ci.yaml

@@ -244,3 +244,25 @@ jobs:
       disable_extra_builds: true
       disable_tests: true
       target: x86_64-unknown-netbsd
+
+  x86_64-pc-windows-msvc-nightly:
+    uses: ./.github/workflows/build.yaml
+    with:
+      runs_on: windows-2019
+      target: x86_64-pc-windows-msvc
+      toolchain: nightly
+
+  x86_64-unknown-linux-gnu-nightly:
+    uses: ./.github/workflows/build.yaml
+    with:
+      extra_packages: libudev-dev
+      target: x86_64-unknown-linux-gnu
+      toolchain: nightly
+
+  aarch64-apple-darwin-nightly:
+    uses: ./.github/workflows/build.yaml
+    with:
+      disable_tests: true
+      runs_on: macos-latest
+      target: aarch64-apple-darwin
+      toolchain: nightly

src/lib.rs

@@ -32,7 +32,6 @@
 // doc tests.
 #![doc(test(attr(allow(unused_must_use))))]
 
-use std::convert::From;
 use std::error::Error as StdError;
 use std::fmt;
 use std::io;