mention nightly in -Z external-macro-backtrace note

src/librustc_errors/emitter.rs

@@ -798,7 +798,8 @@ impl EmitterWriter {
                 level: Level::Note,
                 message: vec![
                     (["this error originates in a macro outside of the current crate",
-                      "(run with -Z external-macro-backtrace for more info)"].join(" "),
+                      "(in Nightly builds, run with -Z external-macro-backtrace for more info)"]
+                      .join(" "),
                      Style::NoStyle),
                 ],
                 span: MultiSpan::new(),

src/test/ui-fulldeps/issue-44953/issue-44953.stderr

@@ -13,7 +13,7 @@ error: use of unstable library feature 'rustc_private': this crate is being load
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: add #![feature(rustc_private)] to the crate attributes to enable
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to 2 previous errors
 

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

@@ -4,7 +4,7 @@ error: requires at least a format string argument
 12 |     format!();
    |     ^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: expected token: `,`
   --> $DIR/bad-format-args.rs:13:5
@@ -12,7 +12,7 @@ error: expected token: `,`
 13 |     format!("" 1);
    |     ^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: expected token: `,`
   --> $DIR/bad-format-args.rs:14:5
@@ -20,7 +20,7 @@ error: expected token: `,`
 14 |     format!("", 1 1);
    |     ^^^^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to 3 previous errors
 

src/test/ui/codemap_tests/issue-28308.stderr

@@ -4,7 +4,7 @@ error[E0600]: cannot apply unary operator `!` to type `&'static str`
 12 |     assert!("foo");
    |     ^^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to previous error
 

src/test/ui/cross-crate-macro-backtrace/main.stderr

@@ -4,7 +4,7 @@ error: 1 positional argument in format string, but no arguments were given
 18 |     myprintln!("{}");
    |     ^^^^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to previous error
 

src/test/ui/fmt/format-string-error.stderr

@@ -5,7 +5,7 @@ error: invalid format string: expected `'}'` but string was terminated
    |     ^^^^^^^^^^^^^^
    |
    = note: if you intended to print `{`, you can escape it using `{{`
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: invalid format string: unmatched `}` found
   --> $DIR/format-string-error.rs:14:5
@@ -14,7 +14,7 @@ error: invalid format string: unmatched `}` found
    |     ^^^^^^^^^^^^^^
    |
    = note: if you intended to print `}`, you can escape it using `}}`
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to 2 previous errors
 

src/test/ui/lifetimes/borrowck-let-suggestion.stderr

@@ -9,7 +9,7 @@ error[E0597]: borrowed value does not live long enough
    | - temporary value needs to live until here
    |
    = note: consider using a `let` binding to increase its lifetime
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to previous error
 

src/test/ui/macros/format-foreign.stderr

@@ -11,7 +11,7 @@ error: multiple unused formatting arguments
    = help: `%.*3$s` should be written as `{:.2$}`
    = help: `%s` should be written as `{}`
    = note: printf formatting not supported; see the documentation for `std::fmt`
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: argument never used
   --> $DIR/format-foreign.rs:13:29

src/test/ui/macros/format-unused-lables.stderr

@@ -8,7 +8,7 @@ error: multiple unused formatting arguments
    |                      |    unused
    |                      unused
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: multiple unused formatting arguments
   --> $DIR/format-unused-lables.rs:14:5
@@ -23,7 +23,7 @@ error: multiple unused formatting arguments
 18 | |     );
    | |______^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: named argument never used
   --> $DIR/format-unused-lables.rs:20:35
@@ -47,7 +47,7 @@ error: multiple unused formatting arguments
    |
    = help: `$STUFF` should be written as `{STUFF}`
    = note: shell formatting not supported; see the documentation for `std::fmt`
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to 4 previous errors
 

src/test/ui/reachable/expr_again.stderr

@@ -9,7 +9,7 @@ note: lint level defined here
    |
 13 | #![deny(unreachable_code)]
    |         ^^^^^^^^^^^^^^^^
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to previous error
 

src/test/ui/reachable/expr_block.stderr

@@ -16,7 +16,7 @@ error: unreachable statement
 36 |         println!("foo");
    |         ^^^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to 2 previous errors
 

src/test/ui/reachable/expr_if.stderr

@@ -9,7 +9,7 @@ note: lint level defined here
    |
 14 | #![deny(unreachable_code)]
    |         ^^^^^^^^^^^^^^^^
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to previous error
 

src/test/ui/reachable/expr_loop.stderr

@@ -9,7 +9,7 @@ note: lint level defined here
    |
 14 | #![deny(unreachable_code)]
    |         ^^^^^^^^^^^^^^^^
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: unreachable statement
   --> $DIR/expr_loop.rs:31:5
@@ -17,7 +17,7 @@ error: unreachable statement
 31 |     println!("I am dead.");
    |     ^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: unreachable statement
   --> $DIR/expr_loop.rs:41:5
@@ -25,7 +25,7 @@ error: unreachable statement
 41 |     println!("I am dead.");
    |     ^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to 3 previous errors
 

src/test/ui/reachable/expr_match.stderr

@@ -16,7 +16,7 @@ error: unreachable statement
 25 |     println!("I am dead");
    |     ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: unreachable statement
   --> $DIR/expr_match.rs:35:5
@@ -24,7 +24,7 @@ error: unreachable statement
 35 |     println!("I am dead");
    |     ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to 3 previous errors
 

src/test/ui/reachable/expr_while.stderr

@@ -9,7 +9,7 @@ note: lint level defined here
    |
 14 | #![deny(unreachable_code)]
    |         ^^^^^^^^^^^^^^^^
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: unreachable statement
   --> $DIR/expr_while.rs:33:9
@@ -17,7 +17,7 @@ error: unreachable statement
 33 |         println!("I am dead.");
    |         ^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: unreachable statement
   --> $DIR/expr_while.rs:35:5
@@ -25,7 +25,7 @@ error: unreachable statement
 35 |     println!("I am, too.");
    |     ^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to 3 previous errors
 

src/test/ui/span/coerce-suggestions.stderr

@@ -53,7 +53,7 @@ error[E0308]: mismatched types
    = note: expected type `&mut std::string::String`
               found type `std::string::String`
    = help: try with `&mut format!("foo")`
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to 6 previous errors
 

src/test/ui/span/issue-33884.stderr

@@ -6,7 +6,7 @@ error[E0308]: mismatched types
    |
    = note: expected type `std::fmt::Arguments<'_>`
               found type `std::string::String`
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to previous error
 

src/test/ui/span/issue-40157.stderr

@@ -8,7 +8,7 @@ error[E0597]: `foo` does not live long enough
    |      |                                              borrow occurs here
    |      borrowed value needs to live until here
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to previous error
 

src/test/ui/span/slice-borrow.stderr

@@ -9,7 +9,7 @@ error[E0597]: borrowed value does not live long enough
 19 | }
    | - temporary value needs to live until here
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to previous error
 

src/test/ui/type-check/cannot_infer_local_or_vec.stderr

@@ -6,7 +6,7 @@ error[E0282]: type annotations needed
    |         |
    |         consider giving `x` a type
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to previous error
 

src/test/ui/type-check/cannot_infer_local_or_vec_in_tuples.stderr

@@ -6,7 +6,7 @@ error[E0282]: type annotations needed
    |         |
    |         consider giving the pattern a type
    |
-   = note: this error originates in a macro outside of the current crate (run with -Z external-macro-backtrace for more info)
+   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
 error: aborting due to previous error