Update error messages and un-xfail

Author: catamorphism

src/test/compile-fail/bad-type-env-capture.rs

@@ -1,6 +1,5 @@
-// xfail-test
-// error-pattern: attempted dynamic environment-capture
 fn foo<T>() {
-    fn bar(b: T) { }
+    fn bar(b: T) { } //~ ERROR attempt to use a type argument out of scope
+    //~^ ERROR use of undeclared type name
 }
 fn main() { }

src/test/compile-fail/do2.rs

@@ -1,13 +1,6 @@
-// xfail-fast
-// xfail-test
-
-// This is xfail'd due to bad typecheck error messages. (There is a spurious
-// "expected `bool` but but found `int`" message.)
-
 fn f(f: fn@(int) -> bool) -> bool { f(10i) }
 
 fn main() {
     assert do f() |i| { i == 10i } == 10i;
     //~^ ERROR: expected `bool` but found `int`
-    //~^^ ERROR: expected `bool` but found `int`
 }

src/test/compile-fail/fn-compare-mismatch.rs

@@ -1,12 +1,7 @@
-// xfail-fast
-// xfail-test
-
-// This is xfail'd due to bad spurious typecheck error messages.
-
 fn main() {
     fn f() { }
     fn g() { }
     let x = f == g;
     //~^ ERROR mismatched types
-    //~^^ ERROR cannot determine a type
+    //~^^ ERROR failed to find an implementation of trait
 }

src/test/compile-fail/import-from-missing.rs

@@ -1,5 +1,4 @@
-// error-pattern:unresolved
-// xfail-test
+// error-pattern:failed to resolve import
 use spam::{ham, eggs};
 
 mod spam {

src/test/compile-fail/import.rs

@@ -1,5 +1,4 @@
-// xfail-test
-// error-pattern: unresolved
+// error-pattern:failed to resolve import
 use zed::bar;
 use zed::baz;
 mod zed {

src/test/compile-fail/infinite-tag-type-recursion.rs

@@ -1,7 +1,6 @@
-// xfail-test
 // -*- rust -*-
 
-// error-pattern: enum of infinite size
+// error-pattern: illegal recursive enum type; wrap the inner value in a box
 
 enum mlist { cons(int, mlist), nil, }
 

src/test/compile-fail/issue-1697.rs

@@ -1,8 +1,7 @@
-// xfail-test
 // Testing that we don't fail abnormally after hitting the errors
 
-use unresolved::*; //~ ERROR unresolved modulename
-//~^ ERROR unresolved does not name a module
+use unresolved::*; //~ ERROR unresolved name
+//~^ ERROR failed to resolve import
 
 fn main() {
 }