Remove cancel and make crash exit with code 253.

tests/compiler/dart2js/resolver_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 import "package:expect/expect.dart";
 import 'dart:async';
 import "package:async_helper/async_helper.dart";
 import 'dart:collection';
 
 import "../../../sdk/lib/_internal/compiler/implementation/resolution/resolution.dart";
@@ skipping 98 matching lines @@
 
  compiler = new MockCompiler();
   compiler.parseScript("""
 class X<T> {}
 class Foo extends X<Foo> {}
 class Bar extends Foo implements X<Bar> {}
 """);
   compiler.resolveStatement("Bar bar;");
   ClassElement classBar = compiler.mainApp.find("Bar");
   Expect.equals(0, compiler.warnings.length);
-  Expect.equals(0, compiler.errors.length);
-  Expect.equals(1, compiler.crashes.length);
+  Expect.equals(1, compiler.errors.length);
   Expect.equals(MessageKind.MULTI_INHERITANCE,
-                compiler.crashes[0].message.kind);
+                compiler.errors[0].message.kind);
+  Expect.equals(0, compiler.crashes.length);
 }
 
 testTypeVariables() {
   matchResolvedTypes(visitor, text, name, expectedElements) {
     VariableDefinitions definition = parseStatement(text);
     visitor.visit(definition.type);
     InterfaceType type = visitor.mapping.getType(definition.type);
     Expect.equals(definition.type.typeArguments.slowLength(),
                   length(type.typeArguments));
     int index = 0;
@@ skipping 614 matching lines @@
   Expect.equals(<String>['A<E>', 'D', 'Object'].toString(),
                 asSortedStrings(supertypes).toString());
 
   compiler = new MockCompiler();
   compiler.parseScript("""class A<T> {}
                           class D extends A<int> implements A<double> {}
                           main() { return new D(); }""");
   mainElement = compiler.mainApp.find(MAIN);
   compiler.resolver.resolve(mainElement);
   Expect.equals(0, compiler.warnings.length);
-  Expect.equals(0, compiler.errors.length);
-  Expect.equals(1, compiler.crashes.length);
+  Expect.equals(1, compiler.errors.length);
   Expect.equals(MessageKind.MULTI_INHERITANCE,
-                compiler.crashes[0].message.kind);
+                compiler.errors[0].message.kind);
+  Expect.equals(0, compiler.crashes.length);
 }
 
 testInitializers() {
   String script;
   script = """class A {
                 int foo; int bar;
                 A() : this.foo = 1, bar = 2;
               }""";
   resolveConstructor(script, "A a = new A();", "A", "", 2);
 
@@ skipping 239 matching lines @@
       }""";
   asyncTest(() => compileScript(script2).then((compiler) {
     expect(compiler,
         [MessageKind.CONST_CONSTRUCTOR_WITH_NONFINAL_FIELDS],
         [MessageKind.CONST_CONSTRUCTOR_WITH_NONFINAL_FIELDS_CONSTRUCTOR,
          MessageKind.CONST_CONSTRUCTOR_WITH_NONFINAL_FIELDS_CONSTRUCTOR,
          MessageKind.CONST_CONSTRUCTOR_WITH_NONFINAL_FIELDS_FIELD,
          MessageKind.CONST_CONSTRUCTOR_WITH_NONFINAL_FIELDS_FIELD]);
   }));
 }