Auto merge of #69833 - Centril:rollup-mh74yue, r=Centril

Rollup of 7 pull requests

Successful merges:

 - #69120 (Don't give invalid suggestion on desugared span.)
 - #69326 (mir-interpret: add method to read wide strings from Memory)
 - #69608 (Expose target libdir information via print command)
 - #69734 (Change DIBuilderCreateEnumerator signature to match LLVM 9)
 - #69800 (Compile address sanitizer test with debuginfo)
 - #69807 (Cleanup E0391 explanation)
 - #69820 (clean up E0392 explanation)

Failed merges:

r? @ghost

2 files changed, 8 insertions, 5 deletions

diff --git a/src/librustc_error_codes/error_codes/E0391.md b/src/librustc_error_codes/error_codes/E0391.md
index 5db9ad16d08..dff50ccaa0b 100644
--- a/src/librustc_error_codes/error_codes/E0391.md
+++ b/src/librustc_error_codes/error_codes/E0391.md
@@ -1,7 +1,6 @@
-This error indicates that some types or traits depend on each other
-and therefore cannot be constructed.
+A type dependency cycle has been encountered.
 
-The following example contains a circular dependency between two traits:
+Erroneous code example:
 
 ```compile_fail,E0391
 trait FirstTrait : SecondTrait {
@@ -12,3 +11,6 @@ trait SecondTrait : FirstTrait {
 
 }
 ```
+
+The previous example contains a circular dependency between two traits:
+`FirstTrait` depends on `SecondTrait` which itself depends on `FirstTrait`.
diff --git a/src/librustc_error_codes/error_codes/E0392.md b/src/librustc_error_codes/error_codes/E0392.md
index 1d93e904e37..f373d89456d 100644
--- a/src/librustc_error_codes/error_codes/E0392.md
+++ b/src/librustc_error_codes/error_codes/E0392.md
@@ -1,5 +1,6 @@
-This error indicates that a type or lifetime parameter has been declared
-but not actually used. Here is an example that demonstrates the error:
+A type or lifetime parameter has been declared but is not actually used.
+
+Erroneous code example:
 
 ```compile_fail,E0392
 enum Foo<T> {