Rollup merge of #89453 - waywardmonkeys:consistent-supertrait-usage, r=nagisa

Consistently use 'supertrait'.

A subset of places referred to 'super-trait', so this changes them
to all use 'supertrait'. This matches 'supertype' and some other
usages. An exception is 'auto-trait' which is consistently used
in that manner.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/test/ui/error-codes/E0225.stderr b/src/test/ui/error-codes/E0225.stderr
index 435a2c93962..a4b33a0b7b4 100644
--- a/src/test/ui/error-codes/E0225.stderr
+++ b/src/test/ui/error-codes/E0225.stderr
@@ -6,7 +6,7 @@ LL |     let _: Box<dyn std::io::Read + std::io::Write>;
    |                    |
    |                    first non-auto trait
    |
-   = help: consider creating a new trait with all of these as super-traits and using that trait here instead: `trait NewTrait: std::io::Read + std::io::Write {}`
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: std::io::Read + std::io::Write {}`
    = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
 
 error[E0225]: only auto traits can be used as additional traits in a trait object
@@ -23,7 +23,7 @@ LL |     let _: Box<dyn Foo>;
    |                    trait alias used in trait object type (additional use)
    |                    trait alias used in trait object type (first use)
    |
-   = help: consider creating a new trait with all of these as super-traits and using that trait here instead: `trait NewTrait: std::io::Read + std::io::Write {}`
+   = help: consider creating a new trait with all of these as supertraits and using that trait here instead: `trait NewTrait: std::io::Read + std::io::Write {}`
    = note: auto-traits like `Send` and `Sync` are traits that have special properties; for more information on them, visit <https://doc.rust-lang.org/reference/special-types-and-traits.html#auto-traits>
 
 error: aborting due to 2 previous errors