Register new eror code

Author: estebank

src/test/ui/async-await/issues/issue-62097.stderr

@@ -15,3 +15,4 @@ LL |         foo(|| self.bar()).await;
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0758`.

src/test/ui/impl-trait/must_outlive_least_region_or_bound.stderr

@@ -183,5 +183,5 @@ LL | fn explicit4<'a>(x: &'static i32) -> Box<dyn Debug + 'static> { Box::new(x)
 
 error: aborting due to 12 previous errors
 
-Some errors have detailed explanations: E0310, E0621, E0623.
+Some errors have detailed explanations: E0310, E0621, E0623, E0758.
 For more information about an error, try `rustc --explain E0310`.

src/test/ui/impl-trait/static-return-lifetime-infered.stderr

@@ -40,3 +40,4 @@ LL |     fn iter_values<'a>(&'a self) -> impl Iterator<Item=u32> + 'a {
 
 error: aborting due to 2 previous errors
 
+For more information about this error, try `rustc --explain E0758`.

src/test/ui/issues/issue-16922.stderr

@@ -13,3 +13,4 @@ LL | fn foo<T: Any>(value: &T) -> Box<dyn Any + '_> {
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0758`.

src/test/ui/object-lifetime/object-lifetime-default-from-box-error.stderr

@@ -23,4 +23,5 @@ LL |     ss.r = b;
 
 error: aborting due to 2 previous errors
 
-For more information about this error, try `rustc --explain E0621`.
+Some errors have detailed explanations: E0621, E0758.
+For more information about an error, try `rustc --explain E0621`.

src/test/ui/regions/region-object-lifetime-in-coercion.stderr

@@ -79,4 +79,5 @@ LL |     Box::new(v)
 
 error: aborting due to 4 previous errors
 
-For more information about this error, try `rustc --explain E0495`.
+Some errors have detailed explanations: E0495, E0758.
+For more information about an error, try `rustc --explain E0495`.

src/test/ui/regions/regions-close-object-into-object-2.stderr

@@ -17,3 +17,4 @@ LL | fn g<'a, T: 'static>(v: std::boxed::Box<(dyn A<T> + 'static)>) -> Box<dyn X
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0758`.

src/test/ui/regions/regions-close-object-into-object-4.stderr

@@ -17,3 +17,4 @@ LL | fn i<'a, T, U>(v: std::boxed::Box<(dyn A<U> + 'static)>) -> Box<dyn X + 'st
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0758`.

src/test/ui/regions/regions-proc-bound-capture.stderr

@@ -18,3 +18,4 @@ LL | fn static_proc(x: &'static isize) -> Box<dyn FnMut() -> (isize) + 'static>
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0758`.

src/test/ui/self/arbitrary_self_types_pin_lifetime_impl_trait-async.stderr

@@ -14,3 +14,4 @@ LL |     async fn f(self: Pin<&Self>) -> impl Clone { self }
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0758`.