diff --git a/compiler/rustc_error_codes/src/error_codes/E0191.md b/compiler/rustc_error_codes/src/error_codes/E0191.md
index 46b773bdc50..344ac221698 100644
--- a/compiler/rustc_error_codes/src/error_codes/E0191.md
+++ b/compiler/rustc_error_codes/src/error_codes/E0191.md
@@ -7,8 +7,8 @@ trait Trait {
     type Bar;
 }
 
-type Foo = Trait; // error: the value of the associated type `Bar` (from
-                  //        the trait `Trait`) must be specified
+type Foo = dyn Trait; // error: the value of the associated type `Bar` (from
+                      //        the trait `Trait`) must be specified
 ```
 
 Trait objects need to have all associated types specified. Please verify that
@@ -20,5 +20,5 @@ trait Trait {
     type Bar;
 }
 
-type Foo = Trait<Bar=i32>; // ok!
+type Foo = dyn Trait<Bar=i32>; // ok!
 ```
diff --git a/compiler/rustc_smir/src/stable_mir/mod.rs b/compiler/rustc_smir/src/stable_mir/mod.rs
index 19061742b64..2ae334c6a95 100644
--- a/compiler/rustc_smir/src/stable_mir/mod.rs
+++ b/compiler/rustc_smir/src/stable_mir/mod.rs
@@ -1,6 +1,6 @@
 //! Module that implements the public interface to the Stable MIR.
 //!
-//! This module shall contain all type definitions and APIs that we expect 3P tools to invoke to
+//! This module shall contain all type definitions and APIs that we expect third-party tools to invoke to
 //! interact with the compiler.
 //!
 //! The goal is to eventually move this module to its own crate which shall be published on
diff --git a/library/std/src/f32.rs b/library/std/src/f32.rs
index a659b552f47..776899dbcfd 100644
--- a/library/std/src/f32.rs
+++ b/library/std/src/f32.rs
@@ -822,6 +822,7 @@ impl f32 {
     ///
     /// assert!(abs_difference < 1e-10);
     /// ```
+    #[doc(alias = "log1p")]
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]
diff --git a/library/std/src/f64.rs b/library/std/src/f64.rs
index 721e1fb754e..4f4f5f02471 100644
--- a/library/std/src/f64.rs
+++ b/library/std/src/f64.rs
@@ -822,6 +822,7 @@ impl f64 {
     ///
     /// assert!(abs_difference < 1e-20);
     /// ```
+    #[doc(alias = "log1p")]
     #[rustc_allow_incoherent_impl]
     #[must_use = "method returns a new number and does not mutate the original value"]
     #[stable(feature = "rust1", since = "1.0.0")]