Reword tracking issue note

Author: estebank

src/libsyntax/feature_gate.rs

@@ -1481,9 +1481,12 @@ fn leveled_feature_err<'a>(
     };
 
     match issue {
-        None | Some(0) => {}
+        None | Some(0) => {}  // We still accept `0` as a stand-in for backwards compatibility
         Some(n) => {
-            err.note(&format!("for more information, see tracking issue #{}", n));
+            err.note(&format!(
+                "for more information, see https://github.com/rust-lang/rust/issues/{}",
+                n,
+            ));
         }
     }
 

src/test/ui/cast/cast-ptr-to-int-const.stderr

@@ -4,7 +4,7 @@ error[E0658]: casting pointers to integers in constants is unstable
 LL |         main as u32
    |         ^^^^^^^^^^^
    |
-   = note: for more information, see tracking issue #51910
+   = note: for more information, see https://github.com/rust-lang/rust/issues/51910
    = help: add #![feature(const_raw_ptr_to_usize_cast)] to the crate attributes to enable
 
 error[E0658]: casting pointers to integers in constants is unstable
@@ -13,7 +13,7 @@ error[E0658]: casting pointers to integers in constants is unstable
 LL |         &Y as *const u32 as u32
    |         ^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: for more information, see tracking issue #51910
+   = note: for more information, see https://github.com/rust-lang/rust/issues/51910
    = help: add #![feature(const_raw_ptr_to_usize_cast)] to the crate attributes to enable
 
 error: aborting due to 2 previous errors

src/test/ui/conditional-compilation/cfg-attr-crate-2.stderr

@@ -4,7 +4,7 @@ error[E0658]: no_core is experimental
 LL | #![cfg_attr(broken, no_core)]
    |                     ^^^^^^^
    |
-   = note: for more information, see tracking issue #29639
+   = note: for more information, see https://github.com/rust-lang/rust/issues/29639
    = help: add #![feature(no_core)] to the crate attributes to enable
 
 error: aborting due to previous error

src/test/ui/conditional-compilation/cfg-attr-multi-invalid-1.stderr

@@ -4,7 +4,7 @@ error[E0658]: no_core is experimental
 LL | #![cfg_attr(broken, no_core, no_std)]
    |                     ^^^^^^^
    |
-   = note: for more information, see tracking issue #29639
+   = note: for more information, see https://github.com/rust-lang/rust/issues/29639
    = help: add #![feature(no_core)] to the crate attributes to enable
 
 error: aborting due to previous error

src/test/ui/conditional-compilation/cfg-attr-multi-invalid-2.stderr

@@ -4,7 +4,7 @@ error[E0658]: no_core is experimental
 LL | #![cfg_attr(broken, no_std, no_core)]
    |                             ^^^^^^^
    |
-   = note: for more information, see tracking issue #29639
+   = note: for more information, see https://github.com/rust-lang/rust/issues/29639
    = help: add #![feature(no_core)] to the crate attributes to enable
 
 error: aborting due to previous error

src/test/ui/conditional-compilation/cfg-attr-unknown-attribute-macro-expansion.stderr

@@ -7,7 +7,7 @@ LL |         #[cfg_attr(all(), unknown)]
 LL | foo!();
    | ------- in this macro invocation
    |
-   = note: for more information, see tracking issue #29642
+   = note: for more information, see https://github.com/rust-lang/rust/issues/29642
    = help: add #![feature(custom_attribute)] to the crate attributes to enable
 
 error: aborting due to previous error

src/test/ui/consts/const-deref-ptr.stderr

@@ -4,7 +4,7 @@ error[E0658]: dereferencing raw pointers in statics is unstable
 LL |     static C: u64 = unsafe {*(0xdeadbeef as *const u64)};
    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: for more information, see tracking issue #51911
+   = note: for more information, see https://github.com/rust-lang/rust/issues/51911
    = help: add #![feature(const_raw_ptr_deref)] to the crate attributes to enable
 
 error: aborting due to previous error

src/test/ui/consts/const-eval/feature-gate-const_fn_union.stderr

@@ -4,7 +4,7 @@ error[E0658]: unions in const fn are unstable
 LL |     Foo { u }.i
    |     ^^^^^^^^^^^
    |
-   = note: for more information, see tracking issue #51909
+   = note: for more information, see https://github.com/rust-lang/rust/issues/51909
    = help: add #![feature(const_fn_union)] to the crate attributes to enable
 
 error: aborting due to previous error

src/test/ui/consts/const-eval/feature-gate-const_panic.stderr

@@ -4,7 +4,7 @@ error[E0658]: panicking in constants is unstable
 LL | const Z: () = panic!("cheese");
    |               ^^^^^^^^^^^^^^^^
    |
-   = note: for more information, see tracking issue #51999
+   = note: for more information, see https://github.com/rust-lang/rust/issues/51999
    = help: add #![feature(const_panic)] to the crate attributes to enable
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
@@ -14,7 +14,7 @@ error[E0658]: panicking in constants is unstable
 LL | const X: () = unimplemented!();
    |               ^^^^^^^^^^^^^^^^
    |
-   = note: for more information, see tracking issue #51999
+   = note: for more information, see https://github.com/rust-lang/rust/issues/51999
    = help: add #![feature(const_panic)] to the crate attributes to enable
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 
@@ -24,7 +24,7 @@ error[E0658]: panicking in constants is unstable
 LL | const Y: () = unreachable!();
    |               ^^^^^^^^^^^^^^
    |
-   = note: for more information, see tracking issue #51999
+   = note: for more information, see https://github.com/rust-lang/rust/issues/51999
    = help: add #![feature(const_panic)] to the crate attributes to enable
    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
 

src/test/ui/consts/const-eval/match-test-ptr-null.rs

@@ -5,7 +5,7 @@ fn main() {
     let _: [u8; 0] = [4; {
         match &1 as *const i32 as usize {
             //~^ ERROR casting pointers to integers in constants
-            //~| NOTE for more information, see tracking issue #51910
+            //~| NOTE for more information, see
             0 => 42, //~ ERROR constant contains unimplemented expression type
             //~^ NOTE "pointer arithmetic or comparison" needs an rfc before being allowed
             //~| ERROR evaluation of constant value failed