Auto merge of #44474 - GuillaumeGomez:rollup, r=GuillaumeGomez

Rollup of 13 pull requests

- Successful merges: #44262, #44329, #44332, #44347, #44372, #44384, #44387, #44396, #44449, #44451, #44457, #44464, #44467
- Failed merges:

1 files changed, 4 insertions, 0 deletions

diff --git a/src/libstd/thread/local.rs b/src/libstd/thread/local.rs
index 4ee8132f55c..a53c76a333a 100644
--- a/src/libstd/thread/local.rs
+++ b/src/libstd/thread/local.rs
@@ -31,6 +31,10 @@ use mem;
 /// within a thread, and values that implement [`Drop`] get destructed when a
 /// thread exits. Some caveats apply, which are explained below.
 ///
+/// A `LocalKey`'s initializer cannot recursively depend on itself, and using
+/// a `LocalKey` in this way will cause the initializer to infinitely recurse
+/// on the first call to `with`.
+///
 /// # Examples
 ///
 /// ```