Comments only: annotate FIXMEs in tests

src/test/pretty/block-arg-disambig.rs

@@ -1,5 +1,5 @@
 // FIXME: The disambiguation the pretty printer does here
-// is probably not necessary anymore
+// is probably not necessary anymore (#2882)
 
 fn blk1(b: fn()) -> fn@() { ret fn@() { }; }
 fn test1() { (do blk1 { #debug["hi"]; })(); }

src/test/run-pass/class-separate-impl.rs

@@ -1,6 +1,6 @@
 // xfail-test
 // xfail-fast
-// (Not sure why, though -- FIXME (tjc)
+// (Not sure why, though -- FIXME #2883)
 import to_str::*;
 import to_str::to_str;
 

src/test/run-pass/issue-2718.rs

@@ -67,8 +67,6 @@ mod pipes {
           }
           full { fail "duplicate send" }
           blocked {
-            // FIXME: once the target will actually block, tell the
-            // scheduler to wake it up.
 
             // The receiver will eventually clean this up.
             unsafe { forget(p); }