Unignore tests which work fine now.

src/test/compile-fail/const-eval-overflow-4.rs

@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// ignore-test this should fail to compile (#23833)
-
 // Evaluation of constants in array-elem count goes through different
 // compiler control-flow paths.
 //
@@ -23,7 +21,8 @@ use std::{u8, u16, u32, u64, usize};
 
 const A_I8_T
     : [u32; (i8::MAX as i8 + 1i8) as usize]
-    //~^ ERROR error evaluating count: attempt to add with overflow
+    //~^ ERROR constant evaluation error
+    //~^^ NOTE attempt to add with overflow
     = [0; (i8::MAX as usize) + 1];
 
 fn main() {

src/test/compile-fail/directory_ownership/macro_expanded_mod_helper/foo/bar.rs

@@ -8,4 +8,4 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// ignore-test
+// ignore-test not a test, auxillary

src/test/compile-fail/directory_ownership/macro_expanded_mod_helper/foo/mod.rs

@@ -8,6 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// ignore-test
+// ignore-test not a test, auxillary
 
 mod_decl!(bar);

src/test/run-fail/call-fn-never-arg.rs

@@ -10,7 +10,6 @@
 
 // Test that we can use a ! for an argument of type !
 
-// ignore-test FIXME(durka) can't be done with the current liveness code
 // error-pattern:wowzers!
 
 #![feature(never_type)]

src/test/run-pass-fulldeps/proc-macro/auxiliary/derive-reexport.rs

@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-// ignore-test
+// ignore-test not a test, auxillary
 
 #![feature(macro_reexport)]