Revert "Change error count messages"

This reverts commit 5558c64.

Author: arielb1

src/librustc_driver/lib.rs

@@ -113,7 +113,8 @@ const BUG_REPORT_URL: &'static str = "https://github.com/rust-lang/rust/blob/mas
 fn abort_msg(err_count: usize) -> String {
     match err_count {
         0 => "aborting with no errors (maybe a bug?)".to_owned(),
-        _ => "aborting due to previous error(s)".to_owned(),
+        1 => "aborting due to previous error".to_owned(),
+        e => format!("aborting due to {} previous errors", e),
     }
 }
 

src/librustc_errors/lib.rs

@@ -506,7 +506,10 @@ impl Handler {
 
                 return;
             }
-            _ => s = "aborting due to previous error(s)".to_string(),
+            1 => s = "aborting due to previous error".to_string(),
+            _ => {
+                s = format!("aborting due to {} previous errors", self.err_count.get());
+            }
         }
 
         panic!(self.fatal(&s));

src/test/ui/borrowck/borrowck-in-static.stderr

@@ -6,5 +6,5 @@ error[E0507]: cannot move out of captured outer variable in an `Fn` closure
 15 |     Box::new(|| x) //~ ERROR cannot move out of captured outer variable
    |                 ^ cannot move out of captured outer variable in an `Fn` closure
 
-error: aborting due to previous error(s)
+error: aborting due to previous error
 

src/test/ui/borrowck/unboxed-closures-move-upvar-from-non-once-ref-closure.stderr

@@ -7,5 +7,5 @@ error[E0507]: cannot move out of captured outer variable in an `Fn` closure
 21 |         y.into_iter();
    |         ^ cannot move out of captured outer variable in an `Fn` closure
 
-error: aborting due to previous error(s)
+error: aborting due to previous error
 

src/test/ui/check_match/issue-35609.stderr

@@ -46,5 +46,5 @@ error[E0004]: non-exhaustive patterns: `Some(B)`, `Some(C)`, `Some(D)` and 2 mor
 49 |     match Some(A) {
    |           ^^^^^^^ patterns `Some(B)`, `Some(C)`, `Some(D)` and 2 more not covered
 
-error: aborting due to previous error(s)
+error: aborting due to 8 previous errors
 

src/test/ui/closure_context/issue-42065.stderr

@@ -12,5 +12,5 @@ note: closure cannot be invoked more than once because it moves the variable `di
 16 |         for (key, value) in dict {
    |                             ^^^^
 
-error: aborting due to previous error(s)
+error: aborting due to previous error
 

src/test/ui/codemap_tests/bad-format-args.stderr

@@ -22,5 +22,5 @@ error: expected token: `,`
    |
    = note: this error originates in a macro outside of the current crate
 
-error: aborting due to previous error(s)
+error: aborting due to 3 previous errors
 

src/test/ui/codemap_tests/coherence-overlapping-inherent-impl-trait.stderr

@@ -6,5 +6,5 @@ error[E0592]: duplicate definitions with name `f`
 15 | impl C { fn f() {} }
    |          --------- other definition for `f`
 
-error: aborting due to previous error(s)
+error: aborting due to previous error
 

src/test/ui/codemap_tests/empty_span.stderr

@@ -4,5 +4,5 @@ error[E0321]: cross-crate traits with a default impl, like `std::marker::Send`,
 17 |     unsafe impl Send for &'static Foo { }
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to previous error(s)
+error: aborting due to previous error
 

src/test/ui/codemap_tests/huge_multispan_highlight.stderr

@@ -7,5 +7,5 @@ error[E0596]: cannot borrow immutable local variable `x` as mutable
 100 |     let y = &mut x;
     |                  ^ cannot borrow mutably
 
-error: aborting due to previous error(s)
+error: aborting due to previous error