Fixes error count display is different when there's only one error left

compiler/rustc_errors/src/lib.rs

@@ -1465,7 +1465,7 @@ impl HandlerInner {
         };
         let errors = match self.deduplicated_err_count {
             0 => Cow::from(""),
-            1 => Cow::from("aborting due to previous error"),
+            1 => Cow::from("aborting due to 1 previous error"),
             count => Cow::from(format!("aborting due to {count} previous errors")),
         };
         if self.treat_err_as_bug() {

compiler/rustc_hir_typeck/src/expr.rs

@@ -1932,7 +1932,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
     /// 8 |     foo::Foo {};
     ///   |     ^^^^^^^^ missing `you_can_use_this_field`
     ///
-    /// error: aborting due to previous error
+    /// error: aborting due to 1 previous error
     /// ```
     fn report_missing_fields(
         &self,
@@ -2049,7 +2049,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
     /// 8 |     foo::Foo {};
     ///   |     ^^^^^^^^
     ///
-    /// error: aborting due to previous error
+    /// error: aborting due to 1 previous error
     /// ```
     fn report_private_fields(
         &self,

library/core/src/intrinsics/mir.rs

@@ -193,7 +193,7 @@
 //! 27 | |     )
 //!    | |_____- binding declared here but left uninitialized
 //!
-//! error: aborting due to previous error
+//! error: aborting due to 1 previous error
 //!
 //! For more information about this error, try `rustc --explain E0381`.
 //! ```

src/tools/clippy/tests/ui-internal/default_deprecation_reason.stderr

@@ -18,5 +18,5 @@ LL | #![deny(clippy::internal)]
    = note: `#[deny(clippy::default_deprecation_reason)]` implied by `#[deny(clippy::internal)]`
    = note: this error originates in the macro `declare_deprecated_lint` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-internal/default_lint.stderr

@@ -17,5 +17,5 @@ LL | #![deny(clippy::internal)]
    = note: `#[deny(clippy::default_lint)]` implied by `#[deny(clippy::internal)]`
    = note: this error originates in the macro `$crate::declare_tool_lint` which comes from the expansion of the macro `declare_tool_lint` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-internal/lint_without_lint_pass.stderr

@@ -17,5 +17,5 @@ LL | #![deny(clippy::internal)]
    = note: `#[deny(clippy::lint_without_lint_pass)]` implied by `#[deny(clippy::internal)]`
    = note: this error originates in the macro `declare_tool_lint` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-internal/outer_expn_data.stderr

@@ -11,5 +11,5 @@ LL | #![deny(clippy::internal)]
    |         ^^^^^^^^^^^^^^^^
    = note: `#[deny(clippy::outer_expn_expn_data)]` implied by `#[deny(clippy::internal)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/bad_toml/conf_bad_toml.stderr

@@ -4,5 +4,5 @@ error: error reading Clippy's configuration file: expected `.`, `=`
 LL | fn this_is_obviously(not: a, toml: file) {
    |    ^
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/bad_toml_type/conf_bad_type.stderr

@@ -4,5 +4,5 @@ error: error reading Clippy's configuration file: invalid type: integer `42`, ex
 LL | disallowed-names = 42
    |                    ^^
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/conf_deprecated_key/conf_deprecated_key.stderr

@@ -20,5 +20,5 @@ LL | fn cognitive_complexity() {
    = note: `-D clippy::cognitive-complexity` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::cognitive_complexity)]`
 
-error: aborting due to previous error; 2 warnings emitted
+error: aborting due to 1 previous error; 2 warnings emitted
 

src/tools/clippy/tests/ui-toml/decimal_literal_representation/decimal_literal_representation.stderr

@@ -7,5 +7,5 @@ LL |     let _ = 16777215;
    = note: `-D clippy::decimal-literal-representation` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::decimal_literal_representation)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/disallowed_names_replace/disallowed_names.stderr

@@ -7,5 +7,5 @@ LL |     let ducks = ["quack", "quack"];
    = note: `-D clippy::disallowed-names` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::disallowed_names)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/disallowed_script_idents/disallowed_script_idents.stderr

@@ -7,5 +7,5 @@ LL |     let カウンタ = 10;
    = note: `-D clippy::disallowed-script-idents` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::disallowed_script_idents)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/doc_valid_idents_append/doc_markdown.stderr

@@ -11,5 +11,5 @@ help: try
 LL | /// `TestItemThingyOfCoolness` might sound cool but is not on the list and should be linted.
    |     ~~~~~~~~~~~~~~~~~~~~~~~~~~
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/duplicated_keys/duplicated_keys.stderr

@@ -4,5 +4,5 @@ error: error reading Clippy's configuration file: duplicate key `cognitive-compl
 LL | cognitive-complexity-threshold = 4
    | ^
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/duplicated_keys_deprecated/duplicated_keys.stderr

@@ -10,5 +10,5 @@ warning: error reading Clippy's configuration file: deprecated field `cyclomatic
 LL | cyclomatic-complexity-threshold = 3
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to 1 previous error; 1 warning emitted
 

src/tools/clippy/tests/ui-toml/duplicated_keys_deprecated_2/duplicated_keys.stderr

@@ -10,5 +10,5 @@ warning: error reading Clippy's configuration file: deprecated field `cyclomatic
 LL | cyclomatic-complexity-threshold = 3
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to 1 previous error; 1 warning emitted
 

src/tools/clippy/tests/ui-toml/enum_variant_size/enum_variant_size.stderr

@@ -17,5 +17,5 @@ help: consider boxing the large fields to reduce the total size of the enum
 LL |     B(Box<[u8; 501]>),
    |       ~~~~~~~~~~~~~~
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/fn_params_excessive_bools/test.stderr

@@ -8,5 +8,5 @@ LL | fn g(_: bool, _: bool) {}
    = note: `-D clippy::fn-params-excessive-bools` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::fn_params_excessive_bools)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/ifs_same_cond/ifs_same_cond.stderr

@@ -12,5 +12,5 @@ LL |     if x.get() {
    = note: `-D clippy::ifs-same-cond` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::ifs_same_cond)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/impl_trait_in_params/impl_trait_in_params.stderr

@@ -11,5 +11,5 @@ help: add a type parameter
 LL |     fn t<{ /* Generic name */ }: Trait>(_: impl Trait);
    |         +++++++++++++++++++++++++++++++
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/invalid_min_rust_version/invalid_min_rust_version.stderr

@@ -4,5 +4,5 @@ error: error reading Clippy's configuration file: not a valid Rust version
 LL | msrv = "invalid.version"
    |        ^^^^^^^^^^^^^^^^^
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/large_futures/large_futures.stderr

@@ -7,5 +7,5 @@ LL |     should_warn().await;
    = note: `-D clippy::large-futures` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::large_futures)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/large_stack_frames/large_stack_frames.stderr

@@ -11,5 +11,5 @@ LL | | }
    = note: `-D clippy::large-stack-frames` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::large_stack_frames)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/large_types_passed_by_value/large_types_passed_by_value.stderr

@@ -7,5 +7,5 @@ LL | fn f2(_v: [u8; 513]) {}
    = note: `-D clippy::large-types-passed-by-value` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::large_types_passed_by_value)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/manual_let_else/manual_let_else.stderr

@@ -11,5 +11,5 @@ LL | |     };
    = note: `-D clippy::manual-let-else` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::manual_let_else)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/max_suggested_slice_pattern_length/index_refutable_slice.stderr

@@ -18,5 +18,5 @@ help: and replace the index expressions here
 LL |         println!("{}", slice_7);
    |                        ~~~~~~~
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/min_rust_version/min_rust_version.stderr

@@ -7,5 +7,5 @@ LL |     let _: Option<u64> = Some(&16).map(|b| *b);
    = note: `-D clippy::map-clone` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::map_clone)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/result_large_err/result_large_err.stderr

@@ -8,5 +8,5 @@ LL | fn f2() -> Result<(), [u8; 512]> {
    = note: `-D clippy::result-large-err` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::result_large_err)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/semicolon_block/semicolon_inside_block.stderr

@@ -15,5 +15,5 @@ LL ~         unit_fn_block();
 LL ~     }
    |
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/struct_excessive_bools/test.stderr

@@ -10,5 +10,5 @@ LL | | }
    = note: `-D clippy::struct-excessive-bools` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::struct_excessive_bools)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/too_large_for_stack/boxed_local.stderr

@@ -7,5 +7,5 @@ LL | fn f(x: Box<[u8; 500]>) {}
    = note: `-D clippy::boxed-local` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::boxed_local)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/too_large_for_stack/useless_vec.stderr

@@ -7,5 +7,5 @@ LL |     let x = vec![0u8; 500];
    = note: `-D clippy::useless-vec` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::useless_vec)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/too_many_arguments/too_many_arguments.stderr

@@ -7,5 +7,5 @@ LL | fn too_many(p1: u8, p2: u8, p3: u8, p4: u8, p5: u8, p6: u8, p7: u8, p8: u8,
    = note: `-D clippy::too-many-arguments` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::too_many_arguments)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/type_complexity/type_complexity.stderr

@@ -7,5 +7,5 @@ LL | fn f2(_: (u8, (u8, (u8, (u8, (u8, (u8, u8))))))) {}
    = note: `-D clippy::type-complexity` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::type_complexity)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/type_repetition_in_bounds/main.stderr

@@ -8,5 +8,5 @@ LL |     T: Unpin + PartialEq,
    = note: `-D clippy::type-repetition-in-bounds` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::type_repetition_in_bounds)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/unnecessary_box_returns/unnecessary_box_returns.stderr

@@ -8,5 +8,5 @@ LL | fn f() -> Box<[u8; 64]> {
    = note: `-D clippy::unnecessary-box-returns` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::unnecessary_box_returns)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/verbose_bit_mask/verbose_bit_mask.stderr

@@ -7,5 +7,5 @@ LL |     let _ = v & 0b111111 == 0;
    = note: `-D clippy::verbose-bit-mask` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::verbose_bit_mask)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui-toml/wildcard_imports/wildcard_imports.stderr

@@ -7,5 +7,5 @@ LL | use prelude::*;
    = note: `-D clippy::wildcard-imports` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::wildcard_imports)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/borrow_deref_ref_unfixable.stderr

@@ -15,5 +15,5 @@ help: if you would like to deref, try using `&**`
 LL |         let x: &str = &**s;
    |                       ~~~~
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/char_lit_as_u8.stderr

@@ -8,5 +8,5 @@ LL |     let _ = '❤' as u8;
    = note: `-D clippy::char-lit-as-u8` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::char_lit_as_u8)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/cognitive_complexity_attr_used.stderr

@@ -8,5 +8,5 @@ LL | fn kaboom() {
    = note: `-D clippy::cognitive-complexity` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::cognitive_complexity)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/copy_iterator.stderr

@@ -14,5 +14,5 @@ LL | | }
    = note: `-D clippy::copy-iterator` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::copy_iterator)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-10148.stderr

@@ -9,5 +9,5 @@ LL |     println!(with_span!(""something ""));
    = note: `-D clippy::println-empty-string` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::println_empty_string)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-11422.stderr

@@ -12,5 +12,5 @@ LL - fn gen() -> impl PartialOrd + PartialEq + Debug {}
 LL + fn gen() -> impl PartialOrd + Debug {}
    |
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-2774.stderr

@@ -12,5 +12,5 @@ LL - pub fn add_barfoos_to_foos<'a>(bars: &HashSet<&'a Bar>) {
 LL + pub fn add_barfoos_to_foos(bars: &HashSet<&Bar>) {
    |
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-3717.stderr

@@ -18,5 +18,5 @@ help: ...and use generic constructor
 LL |     let _: HashSet<usize> = HashSet::default();
    |                             ~~~~~~~~~~~~~~~~~~
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-3891.stderr

@@ -6,5 +6,5 @@ LL |     1x;
    |
    = help: the suffix must be one of the numeric types (`u32`, `isize`, `f32`, etc.)
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-5497.stderr

@@ -6,5 +6,5 @@ LL |     const OOB: i32 = [1][1] + T::OOB;
    |
    = note: `#[deny(unconditional_panic)]` on by default
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-5835.stderr

@@ -7,5 +7,5 @@ LL |     /// 位
    = note: `-D clippy::tabs-in-doc-comments` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::tabs_in_doc_comments)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-5872.stderr

@@ -7,5 +7,5 @@ LL |     let _ = vec![1, 2, 3].into_iter().collect::<Vec<_>>().is_empty();
    = note: `-D clippy::needless-collect` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::needless_collect)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-6254.stderr

@@ -11,5 +11,5 @@ LL |         FOO_REF_REF => {},
    = note: `-D indirect-structural-match` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(indirect_structural_match)]`
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-6255.stderr

@@ -9,5 +9,5 @@ LL | define_other_core!();
    |
    = note: this error originates in the macro `define_other_core` (in Nightly builds, run with -Z macro-backtrace for more info)
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 

src/tools/clippy/tests/ui/crashes/ice-6256.stderr

@@ -9,6 +9,6 @@ LL |     let f = |x: &dyn TT| x.func();
    |              |  let's call the lifetime of this reference `'1`
    |              `x` is a reference that is only valid in the closure body
 
-error: aborting due to previous error
+error: aborting due to 1 previous error
 
 For more information about this error, try `rustc --explain E0521`.