update tests following backticks modification of compiler messages

Author: Samy Kacimi

src/doc/rustc-guide

@@ -11,24 +11,24 @@
 fn main() {
 
     #[rustc_dirty(label="Hir", cfg="cfail2")]
-    //[cfail2]~^ ERROR found unchecked #[rustc_dirty]/#[rustc_clean] attribute
+    //[cfail2]~^ ERROR found unchecked `#[rustc_dirty]`/`#[rustc_clean]` attribute
     {
         // empty block
     }
 
     #[rustc_clean(label="Hir", cfg="cfail2")]
-    //[cfail2]~^ ERROR found unchecked #[rustc_dirty]/#[rustc_clean] attribute
+    //[cfail2]~^ ERROR found unchecked `#[rustc_dirty]`/`#[rustc_clean]` attribute
     {
         // empty block
     }
 }
 
 struct _Struct {
     #[rustc_dirty(label="Hir", cfg="cfail2")]
-    //[cfail2]~^ ERROR found unchecked #[rustc_dirty]/#[rustc_clean] attribute
+    //[cfail2]~^ ERROR found unchecked `#[rustc_dirty]`/`#[rustc_clean]` attribute
     _field1: i32,
 
     #[rustc_clean(label="Hir", cfg="cfail2")]
-    //[cfail2]~^ ERROR found unchecked #[rustc_dirty]/#[rustc_clean] attribute
+    //[cfail2]~^ ERROR found unchecked `#[rustc_dirty]`/`#[rustc_clean]` attribute
     _field2: i32,
 }

src/test/incremental/unchecked_dirty_clean.rs

@@ -41,11 +41,11 @@ macro_rules! fake_lint_pass {
     }
 }
 
-declare_lint!(CRATE_NOT_OKAY, Warn, "crate not marked with #![crate_okay]");
-declare_lint!(CRATE_NOT_RED, Warn, "crate not marked with #![crate_red]");
-declare_lint!(CRATE_NOT_BLUE, Warn, "crate not marked with #![crate_blue]");
-declare_lint!(CRATE_NOT_GREY, Warn, "crate not marked with #![crate_grey]");
-declare_lint!(CRATE_NOT_GREEN, Warn, "crate not marked with #![crate_green]");
+declare_lint!(CRATE_NOT_OKAY, Warn, "crate not marked with `#![crate_okay]`");
+declare_lint!(CRATE_NOT_RED, Warn, "crate not marked with `#![crate_red]`");
+declare_lint!(CRATE_NOT_BLUE, Warn, "crate not marked with `#![crate_blue]`");
+declare_lint!(CRATE_NOT_GREY, Warn, "crate not marked with `#![crate_grey]`");
+declare_lint!(CRATE_NOT_GREEN, Warn, "crate not marked with `#![crate_green]`");
 
 fake_lint_pass! {
     PassOkay,

src/test/run-pass-fulldeps/auxiliary/lint-for-crate.rs

@@ -4,5 +4,5 @@ warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer
 LL | #![feature(extern_prelude, lang_items, start)]
    |            ^^^^^^^^^^^^^^
    |
-   = note: #[warn(stable_features)] on by default
+   = note: `#[warn(stable_features)]` on by default
 

src/test/run-pass/extern/extern-prelude-core.stderr

@@ -4,5 +4,5 @@ warning: the feature `extern_prelude` has been stable since 1.30.0 and no longer
 LL | #![feature(extern_prelude)]
    |            ^^^^^^^^^^^^^^
    |
-   = note: #[warn(stable_features)] on by default
+   = note: `#[warn(stable_features)]` on by default
 

src/test/run-pass/extern/extern-prelude-std.stderr

@@ -4,5 +4,5 @@ warning: unreachable block in `if` expression
 LL | fn foo() { if (return) { } }
    |                        ^^^
    |
-   = note: #[warn(unreachable_code)] on by default
+   = note: `#[warn(unreachable_code)]` on by default
 

src/test/run-pass/if-ret.stderr

@@ -4,5 +4,5 @@ warning: unused attribute
 LL | #[macro_use()]
    | ^^^^^^^^^^^^^^
    |
-   = note: #[warn(unused_attributes)] on by default
+   = note: `#[warn(unused_attributes)]` on by default
 

src/test/run-pass/macros/macro-use-all-and-none.stderr

@@ -4,5 +4,5 @@ warning: the feature `crate_in_paths` has been stable since 1.30.0 and no longer
 LL | #![feature(crate_in_paths)]
    |            ^^^^^^^^^^^^^^
    |
-   = note: #[warn(stable_features)] on by default
+   = note: `#[warn(stable_features)]` on by default
 

src/test/run-pass/rfcs/rfc-2126-crate-paths/crate-path-absolute.stderr

@@ -4,5 +4,5 @@ warning: the feature `crate_in_paths` has been stable since 1.30.0 and no longer
 LL | #![feature(crate_in_paths)]
    |            ^^^^^^^^^^^^^^
    |
-   = note: #[warn(stable_features)] on by default
+   = note: `#[warn(stable_features)]` on by default
 

src/test/run-pass/rfcs/rfc-2126-crate-paths/crate-path-visibility-ambiguity.stderr

@@ -16,7 +16,7 @@ use syntax::symbol::Symbol;
 declare_lint! {
     CRATE_NOT_OKAY,
     Warn,
-    "crate not marked with #![crate_okay]"
+    "crate not marked with `#![crate_okay]`"
 }
 
 declare_lint_pass!(Pass => [CRATE_NOT_OKAY]);
@@ -25,7 +25,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Pass {
     fn check_crate(&mut self, cx: &LateContext, krate: &hir::Crate) {
         if !attr::contains_name(&krate.attrs, Symbol::intern("crate_okay")) {
             cx.span_lint(CRATE_NOT_OKAY, krate.span,
-                         "crate is not marked with #![crate_okay]");
+                         "crate is not marked with `#![crate_okay]`");
         }
     }
 }