Update to rustfmt 1.4.17

Mark-Simulacrum · Mark-Simulacrum · commit 309234718434 · 2020-07-22T08:36:35.000-04:00
diff --git a/Cargo.lock b/Cargo.lock
@@ -4467,7 +4467,7 @@ dependencies = [
 
 [[package]]
 name = "rustfmt-nightly"
-version = "1.4.15"
+version = "1.4.17"
 dependencies = [
  "annotate-snippets",
  "bytecount",
diff --git a/src/tools/rustfmt b/src/tools/rustfmt
@@ -1 +1 @@
-Subproject commit 530eadf4b42ddf35b209d4f4acd120f3fcc467ce
+Subproject commit 8a93416c2a6b389a7807dcdc6e6111d5f1e9213a
