Auto merge of #66879 - RalfJung:rollup-nprxpzi, r=RalfJung

Rollup of 11 pull requests

Successful merges:

 - #66379 (Rephrase docs in for ptr)
 - #66589 (Draw vertical lines correctly in compiler error messages)
 - #66613 (Allow customising ty::TraitRef's printing behavior)
 - #66766 (Panic machinery comments and tweaks)
 - #66791 (Handle GlobalCtxt directly from librustc_interface query system)
 - #66793 (Record temporary static references in generator witnesses)
 - #66808 (Cleanup error code)
 - #66826 (Clarifies how to tag users for assigning PRs)
 - #66837 (Clarify `{f32,f64}::EPSILON` docs)
 - #66844 (Miri: do not consider memory allocated by caller_location leaked)
 - #66872 (Minor documentation fix)

Failed merges:

r? @ghost

Author: bors

CONTRIBUTING.md

@@ -150,13 +150,13 @@ All pull requests are reviewed by another person. We have a bot,
 request.
 
 If you want to request that a specific person reviews your pull request,
-you can add an `r?` to the message. For example, [Steve][steveklabnik] usually reviews
+you can add an `r?` to the pull request description. For example, [Steve][steveklabnik] usually reviews
 documentation changes. So if you were to make a documentation change, add
 
     r? @steveklabnik
 
-to the end of the message, and @rust-highfive will assign [@steveklabnik][steveklabnik] instead
-of a random person. This is entirely optional.
+to the end of the pull request description, and [@rust-highfive][rust-highfive] will assign
+[@steveklabnik][steveklabnik] instead of a random person. This is entirely optional.
 
 After someone has reviewed your pull request, they will leave an annotation
 on the pull request with an `r+`. It will look something like this:

src/libcore/any.rs

@@ -68,7 +68,7 @@ use crate::intrinsics;
 // Any trait
 ///////////////////////////////////////////////////////////////////////////////
 
-/// A type to emulate dynamic typing.
+/// A trait to emulate dynamic typing.
 ///
 /// Most types implement `Any`. However, any type which contains a non-`'static` reference does not.
 /// See the [module-level documentation][mod] for more details.