Use 1.39 for MSV/clippy

Author: ctz

.azure-pipelines.yml

@@ -1,6 +1,6 @@
 variables:
-  clippy_toolchain: 1.38.0
-  minimum_toolchain: 1.38.0
+  clippy_toolchain: 1.39.0
+  minimum_toolchain: 1.39.0
 
 resources:
   repositories:

.travis.yml

@@ -1,6 +1,6 @@
 language: rust
 rust:
-  - 1.38.0  # pinned toolchain for clippy
+  - 1.39.0  # pinned toolchain for clippy
   - stable
   - beta
   - nightly
@@ -11,7 +11,7 @@ matrix:
 
 env:
   global:
-    - CLIPPY_RUST_VERSION=1.38.0
+    - CLIPPY_RUST_VERSION=1.39.0
 
 before_script:
   - bash -c 'if [[ "$TRAVIS_RUST_VERSION" == "$CLIPPY_RUST_VERSION" ]]; then