diff --git a/src/test/run-make-fulldeps/libtest-json/output-default.json b/src/test/run-make-fulldeps/libtest-json/output-default.json
index 8046d72221703..0cd9ab79e32f3 100644
--- a/src/test/run-make-fulldeps/libtest-json/output-default.json
+++ b/src/test/run-make-fulldeps/libtest-json/output-default.json
@@ -2,7 +2,7 @@
 { "type": "test", "event": "started", "name": "a" }
 { "type": "test", "name": "a", "event": "ok" }
 { "type": "test", "event": "started", "name": "b" }
-{ "type": "test", "name": "b", "event": "failed", "stdout": "thread 'main' panicked at 'assertion failed: false', f.rs:9:5\nnote: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.\n" }
+{ "type": "test", "name": "b", "event": "failed", "stdout": "thread 'main' panicked at 'assertion failed: false', f.rs:9:5\nnote: run with `RUST_BACKTRACE=1` environment variable to display a backtrace\n" }
 { "type": "test", "event": "started", "name": "c" }
 { "type": "test", "name": "c", "event": "ok" }
 { "type": "test", "event": "started", "name": "d" }
diff --git a/src/test/run-make-fulldeps/libtest-json/output-stdout-success.json b/src/test/run-make-fulldeps/libtest-json/output-stdout-success.json
index 303316278d8ab..dfaf005052e55 100644
--- a/src/test/run-make-fulldeps/libtest-json/output-stdout-success.json
+++ b/src/test/run-make-fulldeps/libtest-json/output-stdout-success.json
@@ -2,7 +2,7 @@
 { "type": "test", "event": "started", "name": "a" }
 { "type": "test", "name": "a", "event": "ok", "stdout": "print from successful test\n" }
 { "type": "test", "event": "started", "name": "b" }
-{ "type": "test", "name": "b", "event": "failed", "stdout": "thread 'main' panicked at 'assertion failed: false', f.rs:9:5\nnote: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.\n" }
+{ "type": "test", "name": "b", "event": "failed", "stdout": "thread 'main' panicked at 'assertion failed: false', f.rs:9:5\nnote: run with `RUST_BACKTRACE=1` environment variable to display a backtrace\n" }
 { "type": "test", "event": "started", "name": "c" }
 { "type": "test", "name": "c", "event": "ok", "stdout": "thread 'main' panicked at 'assertion failed: false', f.rs:15:5\n" }
 { "type": "test", "event": "started", "name": "d" }
diff --git a/src/test/rustdoc-ui/failed-doctest-output.stdout b/src/test/rustdoc-ui/failed-doctest-output.stdout
index 9887d07a3eb6e..ee79ae1a690ec 100644
--- a/src/test/rustdoc-ui/failed-doctest-output.stdout
+++ b/src/test/rustdoc-ui/failed-doctest-output.stdout
@@ -27,7 +27,7 @@ stderr:
 stderr 1
 stderr 2
 thread 'main' panicked at 'oh no', $DIR/failed-doctest-output.rs:7:1
-note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
+note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
 
 
 
diff --git a/src/test/ui/resolve/impl-items-vis-unresolved.stderr b/src/test/ui/resolve/impl-items-vis-unresolved.stderr
index 62cffe55f9fb6..f2293d28ea151 100644
--- a/src/test/ui/resolve/impl-items-vis-unresolved.stderr
+++ b/src/test/ui/resolve/impl-items-vis-unresolved.stderr
@@ -2,7 +2,7 @@ error[E0433]: failed to resolve: there are too many leading `super` keywords
   --> $DIR/impl-items-vis-unresolved.rs:21:13
    |
 LL |         pub(super) fn new() {}
-   |             ^^^^^ there are too many leading `super` keywords.
+   |             ^^^^^ there are too many leading `super` keywords
 
 error: aborting due to previous error