Rollup merge of #67480 - rossmacarthur:fix-41260-avoid-issue-0-part-2, r=Centril

Require issue = "none" over issue = "0" in unstable attributes

These changes make the use of `issue = "none"` required in unstable attributes throughout the compiler.

Notes:
- #66299 is now in beta so `issue = "none"` is accepted.
- The `tidy` tool now fails on `issue = "0"`.
- Tests that used `issue = "0"` were changed to use `issue = "none"`, except for _one_ that asserts `issue = "0"` can still be used.
- The compiler still allows `issue = "0"` because some submodules require it, this could be disallowed once these are updated.

Resolves #41260

r? @varkor

36 files changed, 212 insertions, 212 deletions

diff --git a/src/test/run-make-fulldeps/allow-warnings-cmdline-stability/bar.rs b/src/test/run-make-fulldeps/allow-warnings-cmdline-stability/bar.rs
index 2a977ed63b1..3dcfb9dadd8 100644
--- a/src/test/run-make-fulldeps/allow-warnings-cmdline-stability/bar.rs
+++ b/src/test/run-make-fulldeps/allow-warnings-cmdline-stability/bar.rs
@@ -1,5 +1,5 @@
 #![crate_type = "lib"]
 #![feature(staged_api)]
-#![unstable(feature = "unstable_test_feature", issue = "0")]
+#![unstable(feature = "unstable_test_feature", issue = "none")]
 
 pub fn baz() {}
diff --git a/src/test/rustdoc/const-display.rs b/src/test/rustdoc/const-display.rs
index bc7ad04b6a2..8e0d230f7d0 100644
--- a/src/test/rustdoc/const-display.rs
+++ b/src/test/rustdoc/const-display.rs
@@ -2,18 +2,18 @@
 
 #![unstable(feature = "humans",
             reason = "who ever let humans program computers, we're apparently really bad at it",
-            issue = "0")]
+            issue = "none")]
 
 #![feature(foo, foo2)]
 #![feature(staged_api)]
 
 // @has 'foo/fn.foo.html' '//pre' 'pub unsafe fn foo() -> u32'
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature="foo", issue = "0")]
+#[rustc_const_unstable(feature="foo", issue = "none")]
 pub const unsafe fn foo() -> u32 { 42 }
 
 // @has 'foo/fn.foo2.html' '//pre' 'pub fn foo2() -> u32'
-#[unstable(feature = "humans", issue="0")]
+#[unstable(feature = "humans", issue = "none")]
 pub const fn foo2() -> u32 { 42 }
 
 // @has 'foo/fn.bar2.html' '//pre' 'pub const fn bar2() -> u32'
@@ -22,7 +22,7 @@ pub const fn foo2() -> u32 { 42 }
 pub const fn bar2() -> u32 { 42 }
 
 // @has 'foo/fn.foo2_gated.html' '//pre' 'pub unsafe fn foo2_gated() -> u32'
-#[unstable(feature = "foo2", issue="0")]
+#[unstable(feature = "foo2", issue = "none")]
 pub const unsafe fn foo2_gated() -> u32 { 42 }
 
 // @has 'foo/fn.bar2_gated.html' '//pre' 'pub const unsafe fn bar2_gated() -> u32'
diff --git a/src/test/rustdoc/inline_cross/auxiliary/macros.rs b/src/test/rustdoc/inline_cross/auxiliary/macros.rs
index 6189b018037..2165be97452 100644
--- a/src/test/rustdoc/inline_cross/auxiliary/macros.rs
+++ b/src/test/rustdoc/inline_cross/auxiliary/macros.rs
@@ -3,7 +3,7 @@
 #![stable(feature = "rust1", since = "1.0.0")]
 
 /// docs for my_macro
-#[unstable(feature = "macro_test", issue = "0")]
+#[unstable(feature = "macro_test", issue = "none")]
 #[rustc_deprecated(since = "1.2.3", reason = "text")]
 #[macro_export]
 macro_rules! my_macro {
diff --git a/src/test/rustdoc/stability.rs b/src/test/rustdoc/stability.rs
index 18a21603493..b1b97fe134e 100644
--- a/src/test/rustdoc/stability.rs
+++ b/src/test/rustdoc/stability.rs
@@ -1,6 +1,6 @@
 #![feature(staged_api)]
 
-#![unstable(feature = "test", issue = "0")]
+#![unstable(feature = "test", issue = "none")]
 
 pub struct Unstable {
     // @has stability/struct.Unstable.html \
diff --git a/src/test/ui/auxiliary/stability-cfg2.rs b/src/test/ui/auxiliary/stability-cfg2.rs
index 8a2899584b9..c995038e5a8 100644
--- a/src/test/ui/auxiliary/stability-cfg2.rs
+++ b/src/test/ui/auxiliary/stability-cfg2.rs
@@ -1,5 +1,5 @@
 // compile-flags:--cfg foo
 
-#![cfg_attr(foo, unstable(feature = "unstable_test_feature", issue = "0"))]
+#![cfg_attr(foo, unstable(feature = "unstable_test_feature", issue = "none"))]
 #![cfg_attr(not(foo), stable(feature = "test_feature", since = "1.0.0"))]
 #![feature(staged_api)]
diff --git a/src/test/ui/consts/const-eval/auxiliary/stability.rs b/src/test/ui/consts/const-eval/auxiliary/stability.rs
index 830db55207f..70531114f21 100644
--- a/src/test/ui/consts/const-eval/auxiliary/stability.rs
+++ b/src/test/ui/consts/const-eval/auxiliary/stability.rs
@@ -7,5 +7,5 @@
 #![feature(staged_api)]
 
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature="foo", issue = "0")]
+#[rustc_const_unstable(feature="foo", issue = "none")]
 pub const fn foo() -> u32 { 42 }
diff --git a/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn.rs b/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn.rs
index c4b89b50bc4..3729285956b 100644
--- a/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn.rs
+++ b/src/test/ui/consts/const-eval/dont_promote_unstable_const_fn.rs
@@ -1,13 +1,13 @@
 #![unstable(feature = "humans",
             reason = "who ever let humans program computers,
             we're apparently really bad at it",
-            issue = "0")]
+            issue = "none")]
 
 #![feature(const_fn)]
 #![feature(staged_api)]
 
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature="foo", issue = "0")]
+#[rustc_const_unstable(feature="foo", issue = "none")]
 const fn foo() -> u32 { 42 }
 
 fn meh() -> u32 { 42 }
diff --git a/src/test/ui/consts/min_const_fn/min_const_fn_libstd_stability.rs b/src/test/ui/consts/min_const_fn/min_const_fn_libstd_stability.rs
index 97e467aece2..df10f3496c3 100644
--- a/src/test/ui/consts/min_const_fn/min_const_fn_libstd_stability.rs
+++ b/src/test/ui/consts/min_const_fn/min_const_fn_libstd_stability.rs
@@ -1,13 +1,13 @@
 #![unstable(feature = "humans",
             reason = "who ever let humans program computers,
             we're apparently really bad at it",
-            issue = "0")]
+            issue = "none")]
 
 #![feature(const_fn, foo, foo2)]
 #![feature(staged_api)]
 
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature="foo", issue = "0")]
+#[rustc_const_unstable(feature="foo", issue = "none")]
 const fn foo() -> u32 { 42 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -15,7 +15,7 @@ const fn foo() -> u32 { 42 }
 // can't call non-min_const_fn
 const fn bar() -> u32 { foo() } //~ ERROR can only call other `const fn`
 
-#[unstable(feature = "rust1", issue="0")]
+#[unstable(feature = "rust1", issue = "none")]
 const fn foo2() -> u32 { 42 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -29,7 +29,7 @@ const fn bar2() -> u32 { foo2() } //~ ERROR can only call other `const fn`
 const fn bar3() -> u32 { (5f32 + 6f32) as u32 } //~ ERROR only int, `bool` and `char` operations
 
 // check whether this function cannot be called even with the feature gate active
-#[unstable(feature = "foo2", issue="0")]
+#[unstable(feature = "foo2", issue = "none")]
 const fn foo2_gated() -> u32 { 42 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
diff --git a/src/test/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.rs b/src/test/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.rs
index 102b3801441..12b41ee2b0d 100644
--- a/src/test/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.rs
+++ b/src/test/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability.rs
@@ -1,13 +1,13 @@
 #![unstable(feature = "humans",
             reason = "who ever let humans program computers,
             we're apparently really bad at it",
-            issue = "0")]
+            issue = "none")]
 
 #![feature(const_fn, foo, foo2)]
 #![feature(staged_api)]
 
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature="foo", issue = "0")]
+#[rustc_const_unstable(feature="foo", issue = "none")]
 const unsafe fn foo() -> u32 { 42 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -15,7 +15,7 @@ const unsafe fn foo() -> u32 { 42 }
 // can't call non-min_const_fn
 const unsafe fn bar() -> u32 { unsafe { foo() } } //~ ERROR can only call other `const fn`
 
-#[unstable(feature = "rust1", issue="0")]
+#[unstable(feature = "rust1", issue = "none")]
 const unsafe fn foo2() -> u32 { 42 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -29,7 +29,7 @@ const unsafe fn bar2() -> u32 { unsafe { foo2() } } //~ ERROR can only call othe
 const unsafe fn bar3() -> u32 { (5f32 + 6f32) as u32 } //~ ERROR only int, `bool` and `char` op
 
 // check whether this function cannot be called even with the feature gate active
-#[unstable(feature = "foo2", issue="0")]
+#[unstable(feature = "foo2", issue = "none")]
 const unsafe fn foo2_gated() -> u32 { 42 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
diff --git a/src/test/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability2.rs b/src/test/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability2.rs
index 121177f8366..44a62094987 100644
--- a/src/test/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability2.rs
+++ b/src/test/ui/consts/min_const_fn/min_const_unsafe_fn_libstd_stability2.rs
@@ -1,13 +1,13 @@
 #![unstable(feature = "humans",
             reason = "who ever let humans program computers,
             we're apparently really bad at it",
-            issue = "0")]
+            issue = "none")]
 
 #![feature(const_fn, foo, foo2)]
 #![feature(staged_api)]
 
 #[stable(feature = "rust1", since = "1.0.0")]
-#[rustc_const_unstable(feature="foo", issue = "0")]
+#[rustc_const_unstable(feature="foo", issue = "none")]
 const fn foo() -> u32 { 42 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -15,7 +15,7 @@ const fn foo() -> u32 { 42 }
 // can't call non-min_const_fn
 const unsafe fn bar() -> u32 { foo() } //~ ERROR can only call other `const fn`
 
-#[unstable(feature = "rust1", issue="0")]
+#[unstable(feature = "rust1", issue = "none")]
 const fn foo2() -> u32 { 42 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -24,7 +24,7 @@ const fn foo2() -> u32 { 42 }
 const unsafe fn bar2() -> u32 { foo2() } //~ ERROR can only call other `const fn`
 
 // check whether this function cannot be called even with the feature gate active
-#[unstable(feature = "foo2", issue="0")]
+#[unstable(feature = "foo2", issue = "none")]
 const fn foo2_gated() -> u32 { 42 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
diff --git a/src/test/ui/consts/unstable-const-fn-in-libcore.rs b/src/test/ui/consts/unstable-const-fn-in-libcore.rs
index 655ad7b548a..0b64786ccce 100644
--- a/src/test/ui/consts/unstable-const-fn-in-libcore.rs
+++ b/src/test/ui/consts/unstable-const-fn-in-libcore.rs
@@ -14,7 +14,7 @@ enum Opt<T> {
 }
 
 impl<T> Opt<T> {
-    #[rustc_const_unstable(feature = "foo", issue = "0")]
+    #[rustc_const_unstable(feature = "foo", issue = "none")]
     #[stable(feature = "rust1", since = "1.0.0")]
     const fn unwrap_or_else<F: FnOnce() -> T>(self, f: F) -> T {
     //~^ ERROR destructors cannot be evaluated at compile-time
diff --git a/src/test/ui/feature-gate/stability-attribute-consistency.rs b/src/test/ui/feature-gate/stability-attribute-consistency.rs
index caafd8b8854..6ee7003c31e 100644
--- a/src/test/ui/feature-gate/stability-attribute-consistency.rs
+++ b/src/test/ui/feature-gate/stability-attribute-consistency.rs
@@ -9,7 +9,7 @@ fn foo_stable_1_0_0() {}
 //~^ ERROR feature `foo` is declared stable since 1.29.0
 fn foo_stable_1_29_0() {}
 
-#[unstable(feature = "foo", issue = "0")]
+#[unstable(feature = "foo", issue = "none")]
 //~^ ERROR feature `foo` is declared unstable
 fn foo_unstable() {}
 
diff --git a/src/test/ui/feature-gate/stability-attribute-consistency.stderr b/src/test/ui/feature-gate/stability-attribute-consistency.stderr
index 9b4b28a3922..d49b44c8a35 100644
--- a/src/test/ui/feature-gate/stability-attribute-consistency.stderr
+++ b/src/test/ui/feature-gate/stability-attribute-consistency.stderr
@@ -7,8 +7,8 @@ LL | #[stable(feature = "foo", since = "1.29.0")]
 error[E0711]: feature `foo` is declared unstable, but was previously declared stable
   --> $DIR/stability-attribute-consistency.rs:12:1
    |
-LL | #[unstable(feature = "foo", issue = "0")]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL | #[unstable(feature = "foo", issue = "none")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: aborting due to 2 previous errors
 
diff --git a/src/test/ui/feature-gate/unstable-attribute-allow-issue-none.rs b/src/test/ui/feature-gate/unstable-attribute-allow-issue-0.rs
index 3ce9de3fb1b..c8ad0d13a14 100644
--- a/src/test/ui/feature-gate/unstable-attribute-allow-issue-none.rs
+++ b/src/test/ui/feature-gate/unstable-attribute-allow-issue-0.rs
@@ -1,4 +1,4 @@
-// Check that an issue value can be explicitly set to "none" instead of "0"
+// Check that an issue value can be explicitly set to "0" instead of "none"
 #![crate_type = "lib"]
 #![feature(staged_api)]
 #![stable(feature = "stable_test_feature", since = "1.0.0")]
diff --git a/src/test/ui/feature-gate/unstable-attribute-allow-issue-none.stderr b/src/test/ui/feature-gate/unstable-attribute-allow-issue-0.stderr
index fc031f5f8c5..10bd6f373d9 100644
--- a/src/test/ui/feature-gate/unstable-attribute-allow-issue-none.stderr
+++ b/src/test/ui/feature-gate/unstable-attribute-allow-issue-0.stderr
@@ -1,5 +1,5 @@
 error[E0545]: incorrect 'issue'
-  --> $DIR/unstable-attribute-allow-issue-none.rs:12:1
+  --> $DIR/unstable-attribute-allow-issue-0.rs:12:1
    |
 LL | #[unstable(feature = "unstable_test_feature", issue = "something")]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/src/test/ui/internal/auxiliary/internal_unstable.rs b/src/test/ui/internal/auxiliary/internal_unstable.rs
index 7c79dcb7522..148cbd1899e 100644
--- a/src/test/ui/internal/auxiliary/internal_unstable.rs
+++ b/src/test/ui/internal/auxiliary/internal_unstable.rs
@@ -1,24 +1,24 @@
 #![feature(staged_api, allow_internal_unstable)]
 #![stable(feature = "stable", since = "1.0.0")]
 
-#[unstable(feature = "function", issue = "0")]
+#[unstable(feature = "function", issue = "none")]
 pub fn unstable() {}
 
 
 #[stable(feature = "stable", since = "1.0.0")]
 pub struct Foo {
-    #[unstable(feature = "struct_field", issue = "0")]
+    #[unstable(feature = "struct_field", issue = "none")]
     pub x: u8
 }
 
 impl Foo {
-    #[unstable(feature = "method", issue = "0")]
+    #[unstable(feature = "method", issue = "none")]
     pub fn method(&self) {}
 }
 
 #[stable(feature = "stable", since = "1.0.0")]
 pub struct Bar {
-    #[unstable(feature = "struct2_field", issue = "0")]
+    #[unstable(feature = "struct2_field", issue = "none")]
     pub x: u8
 }
 
diff --git a/src/test/ui/issues/auxiliary/issue-52489.rs b/src/test/ui/issues/auxiliary/issue-52489.rs
index c649930c2b4..f53bf7db525 100644
--- a/src/test/ui/issues/auxiliary/issue-52489.rs
+++ b/src/test/ui/issues/auxiliary/issue-52489.rs
@@ -1,3 +1,3 @@
 #![crate_type = "lib"]
-#![unstable(feature = "issue_52489_unstable", issue = "0")]
+#![unstable(feature = "issue_52489_unstable", issue = "none")]
 #![feature(staged_api)]
diff --git a/src/test/ui/issues/auxiliary/lint-stability.rs b/src/test/ui/issues/auxiliary/lint-stability.rs
index 3188d706ab0..de4058887cf 100644
--- a/src/test/ui/issues/auxiliary/lint-stability.rs
+++ b/src/test/ui/issues/auxiliary/lint-stability.rs
@@ -15,16 +15,16 @@ pub fn deprecated_text() {}
 #[rustc_deprecated(since = "99.99.99", reason = "text")]
 pub fn deprecated_future() {}
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub fn deprecated_unstable() {}
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub fn deprecated_unstable_text() {}
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub fn unstable() {}
-#[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+#[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
 pub fn unstable_text() {}
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -43,16 +43,16 @@ impl MethodTester {
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn method_deprecated_text(&self) {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn method_deprecated_unstable(&self) {}
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn method_deprecated_unstable_text(&self) {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub fn method_unstable(&self) {}
-    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
     pub fn method_unstable_text(&self) {}
 
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -70,16 +70,16 @@ pub trait Trait {
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     fn trait_deprecated_text(&self) {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     fn trait_deprecated_unstable(&self) {}
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     fn trait_deprecated_unstable_text(&self) {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     fn trait_unstable(&self) {}
-    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
     fn trait_unstable_text(&self) {}
 
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -90,7 +90,7 @@ pub trait Trait {
 
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
 pub trait TraitWithAssociatedTypes {
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     type TypeUnstable = u8;
     #[stable(feature = "stable_test_feature", since = "1.0.0")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
@@ -100,7 +100,7 @@ pub trait TraitWithAssociatedTypes {
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
 impl Trait for MethodTester {}
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub trait UnstableTrait { fn dummy(&self) { } }
 
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
@@ -114,12 +114,12 @@ pub trait DeprecatedTrait {
 pub struct DeprecatedStruct {
     #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
 }
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct DeprecatedUnstableStruct {
     #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
 }
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub struct UnstableStruct {
     #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
 }
@@ -127,7 +127,7 @@ pub struct UnstableStruct {
 pub struct StableStruct {
     #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
 }
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub enum UnstableEnum {}
 #[stable(feature = "rust1", since = "1.0.0")]
 pub enum StableEnum {}
@@ -135,10 +135,10 @@ pub enum StableEnum {}
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct DeprecatedUnitStruct;
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct DeprecatedUnstableUnitStruct;
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub struct UnstableUnitStruct;
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct StableUnitStruct;
@@ -148,10 +148,10 @@ pub enum Enum {
     #[stable(feature = "stable_test_feature", since = "1.0.0")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     DeprecatedVariant,
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     DeprecatedUnstableVariant,
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     UnstableVariant,
 
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -161,10 +161,10 @@ pub enum Enum {
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct DeprecatedTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct DeprecatedUnstableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub struct UnstableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct StableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
diff --git a/src/test/ui/issues/issue-17337.rs b/src/test/ui/issues/issue-17337.rs
index 1126ab7a206..65f2f8fc5ac 100644
--- a/src/test/ui/issues/issue-17337.rs
+++ b/src/test/ui/issues/issue-17337.rs
@@ -1,12 +1,12 @@
 #![feature(staged_api)]
 #![deny(deprecated)]
 
-#![unstable(feature = "unstable_test_feature", issue = "0")]
+#![unstable(feature = "unstable_test_feature", issue = "none")]
 
 struct Foo;
 
 impl Foo {
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     fn foo(self) {}
 }
diff --git a/src/test/ui/lint/auxiliary/inherited_stability.rs b/src/test/ui/lint/auxiliary/inherited_stability.rs
index 57af0d3ec9c..1e7eb26fde2 100644
--- a/src/test/ui/lint/auxiliary/inherited_stability.rs
+++ b/src/test/ui/lint/auxiliary/inherited_stability.rs
@@ -1,6 +1,6 @@
 #![crate_name="inherited_stability"]
 #![crate_type = "lib"]
-#![unstable(feature = "unstable_test_feature", issue = "0")]
+#![unstable(feature = "unstable_test_feature", issue = "none")]
 #![feature(staged_api)]
 
 pub fn unstable() {}
@@ -10,14 +10,14 @@ pub fn stable() {}
 
 #[stable(feature = "rust1", since = "1.0.0")]
 pub mod stable_mod {
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub fn unstable() {}
 
     #[stable(feature = "rust1", since = "1.0.0")]
     pub fn stable() {}
 }
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub mod unstable_mod {
     #[stable(feature = "stable_test_feature", since = "1.0.0")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
@@ -28,7 +28,7 @@ pub mod unstable_mod {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 pub trait Stable {
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     fn unstable(&self);
 
     #[stable(feature = "rust1", since = "1.0.0")]
diff --git a/src/test/ui/lint/auxiliary/lint_output_format.rs b/src/test/ui/lint/auxiliary/lint_output_format.rs
index 5facb556122..58cae180196 100644
--- a/src/test/ui/lint/auxiliary/lint_output_format.rs
+++ b/src/test/ui/lint/auxiliary/lint_output_format.rs
@@ -1,7 +1,7 @@
 #![crate_name="lint_output_format"]
 #![crate_type = "lib"]
 #![feature(staged_api)]
-#![unstable(feature = "unstable_test_feature", issue = "0")]
+#![unstable(feature = "unstable_test_feature", issue = "none")]
 
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
@@ -9,12 +9,12 @@ pub fn foo() -> usize {
     20
 }
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub fn bar() -> usize {
     40
 }
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub fn baz() -> usize {
     30
 }
diff --git a/src/test/ui/lint/auxiliary/lint_stability.rs b/src/test/ui/lint/auxiliary/lint_stability.rs
index 3188d706ab0..de4058887cf 100644
--- a/src/test/ui/lint/auxiliary/lint_stability.rs
+++ b/src/test/ui/lint/auxiliary/lint_stability.rs
@@ -15,16 +15,16 @@ pub fn deprecated_text() {}
 #[rustc_deprecated(since = "99.99.99", reason = "text")]
 pub fn deprecated_future() {}
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub fn deprecated_unstable() {}
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub fn deprecated_unstable_text() {}
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub fn unstable() {}
-#[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+#[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
 pub fn unstable_text() {}
 
 #[stable(feature = "rust1", since = "1.0.0")]
@@ -43,16 +43,16 @@ impl MethodTester {
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn method_deprecated_text(&self) {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn method_deprecated_unstable(&self) {}
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn method_deprecated_unstable_text(&self) {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub fn method_unstable(&self) {}
-    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
     pub fn method_unstable_text(&self) {}
 
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -70,16 +70,16 @@ pub trait Trait {
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     fn trait_deprecated_text(&self) {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     fn trait_deprecated_unstable(&self) {}
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     fn trait_deprecated_unstable_text(&self) {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     fn trait_unstable(&self) {}
-    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
     fn trait_unstable_text(&self) {}
 
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -90,7 +90,7 @@ pub trait Trait {
 
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
 pub trait TraitWithAssociatedTypes {
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     type TypeUnstable = u8;
     #[stable(feature = "stable_test_feature", since = "1.0.0")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
@@ -100,7 +100,7 @@ pub trait TraitWithAssociatedTypes {
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
 impl Trait for MethodTester {}
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub trait UnstableTrait { fn dummy(&self) { } }
 
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
@@ -114,12 +114,12 @@ pub trait DeprecatedTrait {
 pub struct DeprecatedStruct {
     #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
 }
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct DeprecatedUnstableStruct {
     #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
 }
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub struct UnstableStruct {
     #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
 }
@@ -127,7 +127,7 @@ pub struct UnstableStruct {
 pub struct StableStruct {
     #[stable(feature = "stable_test_feature", since = "1.0.0")] pub i: isize
 }
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub enum UnstableEnum {}
 #[stable(feature = "rust1", since = "1.0.0")]
 pub enum StableEnum {}
@@ -135,10 +135,10 @@ pub enum StableEnum {}
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct DeprecatedUnitStruct;
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct DeprecatedUnstableUnitStruct;
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub struct UnstableUnitStruct;
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct StableUnitStruct;
@@ -148,10 +148,10 @@ pub enum Enum {
     #[stable(feature = "stable_test_feature", since = "1.0.0")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     DeprecatedVariant,
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     DeprecatedUnstableVariant,
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     UnstableVariant,
 
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -161,10 +161,10 @@ pub enum Enum {
 #[stable(feature = "stable_test_feature", since = "1.0.0")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct DeprecatedTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct DeprecatedUnstableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub struct UnstableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct StableTupleStruct(#[stable(feature = "rust1", since = "1.0.0")] pub isize);
diff --git a/src/test/ui/lint/auxiliary/lint_stability_fields.rs b/src/test/ui/lint/auxiliary/lint_stability_fields.rs
index 2787da7cb71..0efe7686ef7 100644
--- a/src/test/ui/lint/auxiliary/lint_stability_fields.rs
+++ b/src/test/ui/lint/auxiliary/lint_stability_fields.rs
@@ -5,47 +5,47 @@
 pub struct Stable {
     #[stable(feature = "rust1", since = "1.0.0")]
     pub inherit: u8, // it's a lie (stable doesn't inherit)
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub override1: u8,
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub override2: u8,
 }
 
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Stable2(#[stable(feature = "rust1", since = "1.0.0")] pub u8,
-                   #[unstable(feature = "unstable_test_feature", issue = "0")] pub u8,
-                   #[unstable(feature = "unstable_test_feature", issue = "0")]
+                   #[unstable(feature = "unstable_test_feature", issue = "none")] pub u8,
+                   #[unstable(feature = "unstable_test_feature", issue = "none")]
                    #[rustc_deprecated(since = "1.0.0", reason = "text")] pub u8);
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub struct Unstable {
     pub inherit: u8,
     #[stable(feature = "rust1", since = "1.0.0")]
     pub override1: u8,
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub override2: u8,
 }
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub struct Unstable2(pub u8,
                      #[stable(feature = "rust1", since = "1.0.0")] pub u8,
-                     #[unstable(feature = "unstable_test_feature", issue = "0")]
+                     #[unstable(feature = "unstable_test_feature", issue = "none")]
                      #[rustc_deprecated(since = "1.0.0", reason = "text")] pub u8);
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct Deprecated {
     pub inherit: u8,
     #[stable(feature = "rust1", since = "1.0.0")]
     pub override1: u8,
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub override2: u8,
 }
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 #[rustc_deprecated(since = "1.0.0", reason = "text")]
 pub struct Deprecated2(pub u8,
                        #[stable(feature = "rust1", since = "1.0.0")] pub u8,
-                       #[unstable(feature = "unstable_test_feature", issue = "0")] pub u8);
+                       #[unstable(feature = "unstable_test_feature", issue = "none")] pub u8);
diff --git a/src/test/ui/lint/auxiliary/stability-cfg2.rs b/src/test/ui/lint/auxiliary/stability-cfg2.rs
index 8a2899584b9..c995038e5a8 100644
--- a/src/test/ui/lint/auxiliary/stability-cfg2.rs
+++ b/src/test/ui/lint/auxiliary/stability-cfg2.rs
@@ -1,5 +1,5 @@
 // compile-flags:--cfg foo
 
-#![cfg_attr(foo, unstable(feature = "unstable_test_feature", issue = "0"))]
+#![cfg_attr(foo, unstable(feature = "unstable_test_feature", issue = "none"))]
 #![cfg_attr(not(foo), stable(feature = "test_feature", since = "1.0.0"))]
 #![feature(staged_api)]
diff --git a/src/test/ui/lint/auxiliary/stability_cfg2.rs b/src/test/ui/lint/auxiliary/stability_cfg2.rs
index 8a2899584b9..c995038e5a8 100644
--- a/src/test/ui/lint/auxiliary/stability_cfg2.rs
+++ b/src/test/ui/lint/auxiliary/stability_cfg2.rs
@@ -1,5 +1,5 @@
 // compile-flags:--cfg foo
 
-#![cfg_attr(foo, unstable(feature = "unstable_test_feature", issue = "0"))]
+#![cfg_attr(foo, unstable(feature = "unstable_test_feature", issue = "none"))]
 #![cfg_attr(not(foo), stable(feature = "test_feature", since = "1.0.0"))]
 #![feature(staged_api)]
diff --git a/src/test/ui/lint/lint-stability-2.rs b/src/test/ui/lint/lint-stability-2.rs
index 53eee35a9ca..2a4f95f555f 100644
--- a/src/test/ui/lint/lint-stability-2.rs
+++ b/src/test/ui/lint/lint-stability-2.rs
@@ -168,16 +168,16 @@ mod cross_crate {
 }
 
 mod this_crate {
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn deprecated() {}
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn deprecated_text() {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub fn unstable() {}
-    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
     pub fn unstable_text() {}
 
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -189,16 +189,16 @@ mod this_crate {
     pub struct MethodTester;
 
     impl MethodTester {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         pub fn method_deprecated(&self) {}
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         pub fn method_deprecated_text(&self) {}
 
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         pub fn method_unstable(&self) {}
-        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
         pub fn method_unstable_text(&self) {}
 
         #[stable(feature = "rust1", since = "1.0.0")]
@@ -208,16 +208,16 @@ mod this_crate {
     }
 
     pub trait Trait {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         fn trait_deprecated(&self) {}
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         fn trait_deprecated_text(&self) {}
 
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         fn trait_unstable(&self) {}
-        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
         fn trait_unstable_text(&self) {}
 
         #[stable(feature = "rust1", since = "1.0.0")]
@@ -228,12 +228,12 @@ mod this_crate {
 
     impl Trait for MethodTester {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub struct DeprecatedStruct {
         #[stable(feature = "stable_test_feature", since = "1.0.0")] i: isize
     }
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub struct UnstableStruct {
         #[stable(feature = "stable_test_feature", since = "1.0.0")] i: isize
     }
@@ -242,29 +242,29 @@ mod this_crate {
         #[stable(feature = "stable_test_feature", since = "1.0.0")] i: isize
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub struct DeprecatedUnitStruct;
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub struct UnstableUnitStruct;
     #[stable(feature = "rust1", since = "1.0.0")]
     pub struct StableUnitStruct;
 
     pub enum Enum {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         DeprecatedVariant,
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         UnstableVariant,
 
         #[stable(feature = "rust1", since = "1.0.0")]
         StableVariant,
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub struct DeprecatedTupleStruct(isize);
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub struct UnstableTupleStruct(isize);
     #[stable(feature = "rust1", since = "1.0.0")]
     pub struct StableTupleStruct(isize);
@@ -381,7 +381,7 @@ mod this_crate {
         foo.trait_stable();
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     fn test_fn_body() {
         fn fn_in_body() {}
@@ -389,7 +389,7 @@ mod this_crate {
     }
 
     impl MethodTester {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         fn test_method_body(&self) {
             fn fn_in_body() {}
@@ -397,7 +397,7 @@ mod this_crate {
         }
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub trait DeprecatedTrait {
         fn dummy(&self) { }
diff --git a/src/test/ui/lint/lint-stability-deprecated.rs b/src/test/ui/lint/lint-stability-deprecated.rs
index 5e747467a12..0585fec99b4 100644
--- a/src/test/ui/lint/lint-stability-deprecated.rs
+++ b/src/test/ui/lint/lint-stability-deprecated.rs
@@ -216,16 +216,16 @@ mod inheritance {
 }
 
 mod this_crate {
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn deprecated() {}
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn deprecated_text() {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub fn unstable() {}
-    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
     pub fn unstable_text() {}
 
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -237,16 +237,16 @@ mod this_crate {
     pub struct MethodTester;
 
     impl MethodTester {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         pub fn method_deprecated(&self) {}
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         pub fn method_deprecated_text(&self) {}
 
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         pub fn method_unstable(&self) {}
-        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
         pub fn method_unstable_text(&self) {}
 
         #[stable(feature = "rust1", since = "1.0.0")]
@@ -256,16 +256,16 @@ mod this_crate {
     }
 
     pub trait Trait {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         fn trait_deprecated(&self) {}
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         fn trait_deprecated_text(&self) {}
 
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         fn trait_unstable(&self) {}
-        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
         fn trait_unstable_text(&self) {}
 
         #[stable(feature = "rust1", since = "1.0.0")]
@@ -276,12 +276,12 @@ mod this_crate {
 
     impl Trait for MethodTester {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub struct DeprecatedStruct {
         #[stable(feature = "stable_test_feature", since = "1.0.0")] i: isize
     }
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub struct UnstableStruct {
         #[stable(feature = "stable_test_feature", since = "1.0.0")] i: isize
     }
@@ -290,29 +290,29 @@ mod this_crate {
         #[stable(feature = "stable_test_feature", since = "1.0.0")] i: isize
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub struct DeprecatedUnitStruct;
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub struct UnstableUnitStruct;
     #[stable(feature = "rust1", since = "1.0.0")]
     pub struct StableUnitStruct;
 
     pub enum Enum {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         DeprecatedVariant,
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         UnstableVariant,
 
         #[stable(feature = "rust1", since = "1.0.0")]
         StableVariant,
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub struct DeprecatedTupleStruct(isize);
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub struct UnstableTupleStruct(isize);
     #[stable(feature = "rust1", since = "1.0.0")]
     pub struct StableTupleStruct(isize);
@@ -430,7 +430,7 @@ mod this_crate {
         foo.trait_stable();
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     fn test_fn_body() {
         fn fn_in_body() {}
@@ -438,7 +438,7 @@ mod this_crate {
     }
 
     impl MethodTester {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         fn test_method_body(&self) {
             fn fn_in_body() {}
@@ -446,7 +446,7 @@ mod this_crate {
         }
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub trait DeprecatedTrait {
         fn dummy(&self) { }
diff --git a/src/test/ui/lint/lint-stability-fields-deprecated.rs b/src/test/ui/lint/lint-stability-fields-deprecated.rs
index 9d5b7c51cc8..50e3970c7f0 100644
--- a/src/test/ui/lint/lint-stability-fields-deprecated.rs
+++ b/src/test/ui/lint/lint-stability-fields-deprecated.rs
@@ -153,50 +153,50 @@ mod this_crate {
     #[stable(feature = "rust1", since = "1.0.0")]
     struct Stable {
         inherit: u8,
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         override1: u8,
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         override2: u8,
     }
 
     #[stable(feature = "rust1", since = "1.0.0")]
     struct Stable2(u8,
                    #[stable(feature = "rust1", since = "1.0.0")] u8,
-                   #[unstable(feature = "unstable_test_feature", issue = "0")]
+                   #[unstable(feature = "unstable_test_feature", issue = "none")]
                    #[rustc_deprecated(since = "1.0.0", reason = "text")] u8);
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     struct Unstable {
         inherit: u8,
         #[stable(feature = "rust1", since = "1.0.0")]
         override1: u8,
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         override2: u8,
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     struct Unstable2(u8,
                      #[stable(feature = "rust1", since = "1.0.0")] u8,
-                     #[unstable(feature = "unstable_test_feature", issue = "0")]
+                     #[unstable(feature = "unstable_test_feature", issue = "none")]
                      #[rustc_deprecated(since = "1.0.0", reason = "text")] u8);
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     struct Deprecated {
         inherit: u8,
         #[stable(feature = "rust1", since = "1.0.0")]
         override1: u8,
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         override2: u8,
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     struct Deprecated2(u8,
                        #[stable(feature = "rust1", since = "1.0.0")] u8,
-                       #[unstable(feature = "unstable_test_feature", issue = "0")] u8);
+                       #[unstable(feature = "unstable_test_feature", issue = "none")] u8);
 
     pub fn foo() {
         let x = Stable {
diff --git a/src/test/ui/lint/lint-stability-fields.rs b/src/test/ui/lint/lint-stability-fields.rs
index 9be8710bd4c..c5de5748aa3 100644
--- a/src/test/ui/lint/lint-stability-fields.rs
+++ b/src/test/ui/lint/lint-stability-fields.rs
@@ -128,50 +128,50 @@ mod this_crate {
     #[stable(feature = "rust1", since = "1.0.0")]
     struct Stable {
         inherit: u8,
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         override1: u8,
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         override2: u8,
     }
 
     #[stable(feature = "rust1", since = "1.0.0")]
     struct Stable2(u8,
                    #[stable(feature = "rust1", since = "1.0.0")] u8,
-                   #[unstable(feature = "unstable_test_feature", issue = "0")]
+                   #[unstable(feature = "unstable_test_feature", issue = "none")]
                    #[rustc_deprecated(since = "1.0.0", reason = "text")] u8);
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     struct Unstable {
         inherit: u8,
         #[stable(feature = "rust1", since = "1.0.0")]
         override1: u8,
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         override2: u8,
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     struct Unstable2(u8,
                      #[stable(feature = "rust1", since = "1.0.0")] u8,
-                     #[unstable(feature = "unstable_test_feature", issue = "0")]
+                     #[unstable(feature = "unstable_test_feature", issue = "none")]
                      #[rustc_deprecated(since = "1.0.0", reason = "text")] u8);
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     struct Deprecated {
         inherit: u8,
         #[stable(feature = "rust1", since = "1.0.0")]
         override1: u8,
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         override2: u8,
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     struct Deprecated2(u8,
                        #[stable(feature = "rust1", since = "1.0.0")] u8,
-                       #[unstable(feature = "unstable_test_feature", issue = "0")] u8);
+                       #[unstable(feature = "unstable_test_feature", issue = "none")] u8);
 
     pub fn foo() {
         let x = Stable {
diff --git a/src/test/ui/lint/lint-stability.rs b/src/test/ui/lint/lint-stability.rs
index fde27eec7d3..e5620a9f8e7 100644
--- a/src/test/ui/lint/lint-stability.rs
+++ b/src/test/ui/lint/lint-stability.rs
@@ -203,10 +203,10 @@ mod inheritance {
 }
 
 mod this_crate {
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn deprecated() {}
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub fn deprecated_text() {}
 
@@ -214,9 +214,9 @@ mod this_crate {
     #[rustc_deprecated(since = "99.99.99", reason = "text")]
     pub fn deprecated_future() {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub fn unstable() {}
-    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
     pub fn unstable_text() {}
 
     #[stable(feature = "rust1", since = "1.0.0")]
@@ -228,16 +228,16 @@ mod this_crate {
     pub struct MethodTester;
 
     impl MethodTester {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         pub fn method_deprecated(&self) {}
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         pub fn method_deprecated_text(&self) {}
 
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         pub fn method_unstable(&self) {}
-        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
         pub fn method_unstable_text(&self) {}
 
         #[stable(feature = "rust1", since = "1.0.0")]
@@ -247,16 +247,16 @@ mod this_crate {
     }
 
     pub trait Trait {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         fn trait_deprecated(&self) {}
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         fn trait_deprecated_text(&self) {}
 
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         fn trait_unstable(&self) {}
-        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", reason = "text", issue = "none")]
         fn trait_unstable_text(&self) {}
 
         #[stable(feature = "rust1", since = "1.0.0")]
@@ -267,12 +267,12 @@ mod this_crate {
 
     impl Trait for MethodTester {}
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub struct DeprecatedStruct {
         #[stable(feature = "stable_test_feature", since = "1.0.0")] i: isize
     }
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub struct UnstableStruct {
         #[stable(feature = "stable_test_feature", since = "1.0.0")] i: isize
     }
@@ -281,29 +281,29 @@ mod this_crate {
         #[stable(feature = "stable_test_feature", since = "1.0.0")] i: isize
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub struct DeprecatedUnitStruct;
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub struct UnstableUnitStruct;
     #[stable(feature = "rust1", since = "1.0.0")]
     pub struct StableUnitStruct;
 
     pub enum Enum {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         DeprecatedVariant,
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         UnstableVariant,
 
         #[stable(feature = "rust1", since = "1.0.0")]
         StableVariant,
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub struct DeprecatedTupleStruct(isize);
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     pub struct UnstableTupleStruct(isize);
     #[stable(feature = "rust1", since = "1.0.0")]
     pub struct StableTupleStruct(isize);
@@ -422,7 +422,7 @@ mod this_crate {
         foo.trait_stable();
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     fn test_fn_body() {
         fn fn_in_body() {}
@@ -430,7 +430,7 @@ mod this_crate {
     }
 
     impl MethodTester {
-        #[unstable(feature = "unstable_test_feature", issue = "0")]
+        #[unstable(feature = "unstable_test_feature", issue = "none")]
         #[rustc_deprecated(since = "1.0.0", reason = "text")]
         fn test_method_body(&self) {
             fn fn_in_body() {}
@@ -438,7 +438,7 @@ mod this_crate {
         }
     }
 
-    #[unstable(feature = "unstable_test_feature", issue = "0")]
+    #[unstable(feature = "unstable_test_feature", issue = "none")]
     #[rustc_deprecated(since = "1.0.0", reason = "text")]
     pub trait DeprecatedTrait {
         fn dummy(&self) { }
diff --git a/src/test/ui/macros/auxiliary/unstable-macros.rs b/src/test/ui/macros/auxiliary/unstable-macros.rs
index e928dc705d7..123e244a53e 100644
--- a/src/test/ui/macros/auxiliary/unstable-macros.rs
+++ b/src/test/ui/macros/auxiliary/unstable-macros.rs
@@ -2,7 +2,7 @@
 #![feature(staged_api)]
 #![stable(feature = "unit_test", since = "1.0.0")]
 
-#[unstable(feature = "unstable_macros", issue = "0")]
+#[unstable(feature = "unstable_macros", issue = "none")]
 #[macro_export]
 macro_rules! unstable_macro{ () => () }
 
@@ -12,5 +12,5 @@ macro_rules! unstable_macro{ () => () }
 macro_rules! deprecated_macro{ () => () }
 
 // FIXME: Cannot use a `pub` macro 2.0 in a staged API crate due to reachability issues.
-// #[unstable(feature = "unstable_macros", issue = "0")]
+// #[unstable(feature = "unstable_macros", issue = "none")]
 // pub macro unstable_macro_modern() {}
diff --git a/src/test/ui/macros/macro-stability-rpass.rs b/src/test/ui/macros/macro-stability-rpass.rs
index 817bddf6956..a5f538ba6b3 100644
--- a/src/test/ui/macros/macro-stability-rpass.rs
+++ b/src/test/ui/macros/macro-stability-rpass.rs
@@ -5,7 +5,7 @@
 
 #[macro_use] extern crate unstable_macros;
 
-#[unstable(feature = "local_unstable", issue = "0")]
+#[unstable(feature = "local_unstable", issue = "none")]
 macro_rules! local_unstable { () => () }
 
 fn main() {
diff --git a/src/test/ui/macros/macro-stability.rs b/src/test/ui/macros/macro-stability.rs
index ab927e419b4..755f55c28de 100644
--- a/src/test/ui/macros/macro-stability.rs
+++ b/src/test/ui/macros/macro-stability.rs
@@ -4,10 +4,10 @@
 #![feature(staged_api)]
 #[macro_use] extern crate unstable_macros;
 
-#[unstable(feature = "local_unstable", issue = "0")]
+#[unstable(feature = "local_unstable", issue = "none")]
 macro_rules! local_unstable { () => () }
 
-#[unstable(feature = "local_unstable", issue = "0")]
+#[unstable(feature = "local_unstable", issue = "none")]
 macro local_unstable_modern() {}
 
 #[stable(feature = "deprecated_macros", since = "1.0.0")]
diff --git a/src/test/ui/missing/missing-stability.rs b/src/test/ui/missing/missing-stability.rs
index 469c22fdb17..0da5808b47d 100644
--- a/src/test/ui/missing/missing-stability.rs
+++ b/src/test/ui/missing/missing-stability.rs
@@ -10,7 +10,7 @@ pub fn unmarked() {
     ()
 }
 
-#[unstable(feature = "unstable_test_feature", issue = "0")]
+#[unstable(feature = "unstable_test_feature", issue = "none")]
 pub mod foo {
     // #[unstable] is inherited
     pub fn unmarked() {}
diff --git a/src/test/ui/stability-attribute/stability-attribute-sanity.rs b/src/test/ui/stability-attribute/stability-attribute-sanity.rs
index 2e3d790d2d8..5db924642e5 100644
--- a/src/test/ui/stability-attribute/stability-attribute-sanity.rs
+++ b/src/test/ui/stability-attribute/stability-attribute-sanity.rs
@@ -22,7 +22,7 @@ mod bogus_attribute_types_1 {
 }
 
 mod missing_feature_names {
-    #[unstable(issue = "0")] //~ ERROR missing 'feature' [E0546]
+    #[unstable(issue = "none")] //~ ERROR missing 'feature' [E0546]
     fn f1() { }
 
     #[unstable(feature = "b")] //~ ERROR missing 'issue' [E0547]
@@ -45,12 +45,12 @@ mod missing_version {
     fn f3() { }
 }
 
-#[unstable(feature = "b", issue = "0")]
+#[unstable(feature = "b", issue = "none")]
 #[stable(feature = "a", since = "b")] //~ ERROR multiple stability levels [E0544]
 fn multiple1() { }
 
-#[unstable(feature = "b", issue = "0")]
-#[unstable(feature = "b", issue = "0")] //~ ERROR multiple stability levels [E0544]
+#[unstable(feature = "b", issue = "none")]
+#[unstable(feature = "b", issue = "none")] //~ ERROR multiple stability levels [E0544]
 fn multiple2() { }
 
 #[stable(feature = "a", since = "b")]
@@ -60,8 +60,8 @@ fn multiple3() { }
 #[stable(feature = "a", since = "b")]
 #[rustc_deprecated(since = "b", reason = "text")]
 #[rustc_deprecated(since = "b", reason = "text")]
-#[rustc_const_unstable(feature = "c", issue = "0")]
-#[rustc_const_unstable(feature = "d", issue = "0")] //~ ERROR multiple stability levels
+#[rustc_const_unstable(feature = "c", issue = "none")]
+#[rustc_const_unstable(feature = "d", issue = "none")] //~ ERROR multiple stability levels
 pub const fn multiple4() { } //~ ERROR multiple rustc_deprecated attributes [E0540]
 //~^ ERROR Invalid stability or deprecation version found
 
diff --git a/src/test/ui/stability-attribute/stability-attribute-sanity.stderr b/src/test/ui/stability-attribute/stability-attribute-sanity.stderr
index 552e078f45f..d0ca1705037 100644
--- a/src/test/ui/stability-attribute/stability-attribute-sanity.stderr
+++ b/src/test/ui/stability-attribute/stability-attribute-sanity.stderr
@@ -31,8 +31,8 @@ LL |     #[stable(feature(b), since = "a")]
 error[E0546]: missing 'feature'
   --> $DIR/stability-attribute-sanity.rs:25:5
    |
-LL |     #[unstable(issue = "0")]
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+LL |     #[unstable(issue = "none")]
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error[E0547]: missing 'issue'
   --> $DIR/stability-attribute-sanity.rs:28:5
@@ -73,8 +73,8 @@ LL | #[stable(feature = "a", since = "b")]
 error[E0544]: multiple stability levels
   --> $DIR/stability-attribute-sanity.rs:53:1
    |
-LL | #[unstable(feature = "b", issue = "0")]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL | #[unstable(feature = "b", issue = "none")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error[E0544]: multiple stability levels
   --> $DIR/stability-attribute-sanity.rs:57:1
@@ -91,8 +91,8 @@ LL | pub const fn multiple4() { }
 error[E0544]: multiple stability levels
   --> $DIR/stability-attribute-sanity.rs:64:1
    |
-LL | #[rustc_const_unstable(feature = "d", issue = "0")]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL | #[rustc_const_unstable(feature = "d", issue = "none")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: Invalid stability or deprecation version found
   --> $DIR/stability-attribute-sanity.rs:65:1