std: Deny most warnings in doctests

Allow a few specific ones but otherwise this helps ensure that our examples are
squeaky clean!

Closes #18199

1 files changed, 6 insertions, 10 deletions

diff --git a/src/libstd/old_path/mod.rs b/src/libstd/old_path/mod.rs
index 9c88533d3ba..22561c96f63 100644
--- a/src/libstd/old_path/mod.rs
+++ b/src/libstd/old_path/mod.rs
@@ -144,12 +144,10 @@ pub trait GenericPath: Clone + GenericPathUnsafe {
     ///
     /// # Examples
     ///
-    /// ```
+    /// ```no_run
     /// # #![feature(old_path)]
-    /// use std::old_path::{Path, GenericPath};
-    /// # foo();
-    /// # #[cfg(windows)] fn foo() {}
-    /// # #[cfg(unix)] fn foo() {
+    /// # fn main() {
+    /// use std::old_path::Path;
     /// let path = Path::new("foo/bar");
     /// # }
     /// ```
@@ -170,12 +168,10 @@ pub trait GenericPath: Clone + GenericPathUnsafe {
     ///
     /// # Examples
     ///
-    /// ```
+    /// ```no_run
     /// # #![feature(old_path)]
-    /// use std::old_path::{Path, GenericPath};
-    /// # foo();
-    /// # #[cfg(windows)] fn foo() {}
-    /// # #[cfg(unix)] fn foo() {
+    /// # fn main() {
+    /// use std::old_path::Path;
     /// let x: &[u8] = b"foo\0";
     /// assert!(Path::new_opt(x).is_none());
     /// # }