diff --git a/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart b/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
index dd1b41e..4e30ddc 100644
--- a/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
+++ b/pkg/analyzer/test/src/summary/resynthesize_kernel_test.dart
@@ -252,20 +252,9 @@
 
   @override
   @failingTest
-  test_export_configurations_useDefault() async {
-    await super.test_import_configurations_useDefault();
-  }
-
-  @override
-  @failingTest
-  test_exportImport_configurations_useDefault() async {
-    await super.test_import_configurations_useDefault();
-  }
-
-  @override
-  @failingTest
-  test_import_configurations_useDefault() async {
-    await super.test_import_configurations_useDefault();
+  @FastaProblem('https://github.com/dart-lang/sdk/issues/33719')
+  test_unresolved_part() async {
+    await super.test_unresolved_part();
   }
 
   Future<KernelResynthesizer> _createResynthesizer(Uri testUri) async {
diff --git a/pkg/front_end/lib/src/base/processed_options.dart b/pkg/front_end/lib/src/base/processed_options.dart
index 4106e03..0b25e2f 100644
--- a/pkg/front_end/lib/src/base/processed_options.dart
+++ b/pkg/front_end/lib/src/base/processed_options.dart
@@ -50,9 +50,11 @@
         templateInternalProblemUnsupported,
         templateSdkRootNotFound,
         templateSdkSpecificationNotFound,
-        templateCantReadFile,
         templateSdkSummaryNotFound;
 
+// TODO(ahe): Remove this import.
+import '../fasta/fasta_codes.dart' show templateUnspecified;
+
 import '../fasta/messages.dart' show getLocation;
 
 import '../fasta/problems.dart' show DebugAbort, unimplemented;
@@ -636,8 +638,11 @@
       return await file.readAsBytes();
     } on FileSystemException catch (error) {
       report(
-          templateCantReadFile
-              .withArguments(error.uri, error.message)
+          // TODO(ahe): Change to templateCantReadFile.withArguments(error.uri,
+          // error.message) when CL 63144 has landed.
+          templateUnspecified
+              .withArguments(
+                  "Error when reading '${error.uri}': ${error.message}")
               .withoutLocation(),
           Severity.error);
       return new Uint8List(0);
diff --git a/pkg/front_end/lib/src/fasta/builder/library_builder.dart b/pkg/front_end/lib/src/fasta/builder/library_builder.dart
index 5c4b078..5b43657 100644
--- a/pkg/front_end/lib/src/fasta/builder/library_builder.dart
+++ b/pkg/front_end/lib/src/fasta/builder/library_builder.dart
@@ -51,8 +51,6 @@
         exportScopeBuilder = new ScopeBuilder(exportScope),
         super(null, -1, fileUri);
 
-  bool get isSynthetic => false;
-
   @override
   Declaration get parent => null;
 
@@ -191,13 +189,7 @@
     return 0;
   }
 
-  void becomeCoreLibrary() {
-    if (scope.local["dynamic"] == null) {
-      addSyntheticDeclarationOfDynamic();
-    }
-  }
-
-  void addSyntheticDeclarationOfDynamic();
+  void becomeCoreLibrary(dynamicType);
 
   void forEach(void f(String name, Declaration declaration)) {
     scope.forEach((String name, Declaration declaration) {
@@ -226,6 +218,4 @@
     if (!isPatch) return;
     unsupported("${runtimeType}.applyPatches", -1, fileUri);
   }
-
-  void recordAccess(int charOffset, int length, Uri fileUri) {}
 }
diff --git a/pkg/front_end/lib/src/fasta/dill/dill_library_builder.dart b/pkg/front_end/lib/src/fasta/dill/dill_library_builder.dart
index d4f7386..c440b0b 100644
--- a/pkg/front_end/lib/src/fasta/dill/dill_library_builder.dart
+++ b/pkg/front_end/lib/src/fasta/dill/dill_library_builder.dart
@@ -10,7 +10,6 @@
     show
         Class,
         DartType,
-        DynamicType,
         Field,
         Library,
         ListLiteral,
@@ -71,12 +70,14 @@
   @override
   Library get target => library;
 
-  void addSyntheticDeclarationOfDynamic() {
-    addBuilder(
-        "dynamic",
-        new DynamicTypeBuilder<KernelTypeBuilder, DartType>(
-            const DynamicType(), this, -1),
-        -1);
+  void becomeCoreLibrary(dynamicType) {
+    if (scope.local["dynamic"] == null) {
+      addBuilder(
+          "dynamic",
+          new DynamicTypeBuilder<KernelTypeBuilder, DartType>(
+              dynamicType, this, -1),
+          -1);
+    }
   }
 
   void addClass(Class cls) {
diff --git a/pkg/front_end/lib/src/fasta/fasta_codes_generated.dart b/pkg/front_end/lib/src/fasta/fasta_codes_generated.dart
index 7c4430e..d46ccad 100644
--- a/pkg/front_end/lib/src/fasta/fasta_codes_generated.dart
+++ b/pkg/front_end/lib/src/fasta/fasta_codes_generated.dart
@@ -604,28 +604,6 @@
 }
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-const Template<Message Function(Uri uri_, String string)> templateCantReadFile =
-    const Template<Message Function(Uri uri_, String string)>(
-        messageTemplate: r"""Error when reading '#uri': #string""",
-        withArguments: _withArgumentsCantReadFile);
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-const Code<Message Function(Uri uri_, String string)> codeCantReadFile =
-    const Code<Message Function(Uri uri_, String string)>(
-        "CantReadFile", templateCantReadFile,
-        analyzerCode: "URI_DOES_NOT_EXIST",
-        dart2jsCode: "*fatal*",
-        severity: Severity.error);
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-Message _withArgumentsCantReadFile(Uri uri_, String string) {
-  String uri = relativizeUri(uri_);
-  return new Message(codeCantReadFile,
-      message: """Error when reading '${uri}': ${string}""",
-      arguments: {'uri': uri_, 'string': string});
-}
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Template<
     Message Function(
         Token
@@ -7518,27 +7496,6 @@
     message: r"""Incomplete token.""");
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-const Template<Message Function(Uri uri_)> templateUntranslatableUri =
-    const Template<Message Function(Uri uri_)>(
-        messageTemplate: r"""Not found: '#uri'""",
-        withArguments: _withArgumentsUntranslatableUri);
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-const Code<Message Function(Uri uri_)> codeUntranslatableUri =
-    const Code<Message Function(Uri uri_)>(
-        "UntranslatableUri", templateUntranslatableUri,
-        analyzerCode: "URI_DOES_NOT_EXIST",
-        dart2jsCode: "*fatal*",
-        severity: Severity.error);
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
-Message _withArgumentsUntranslatableUri(Uri uri_) {
-  String uri = relativizeUri(uri_);
-  return new Message(codeUntranslatableUri,
-      message: """Not found: '${uri}'""", arguments: {'uri': uri_});
-}
-
-// DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 const Template<Message Function(String name)>
     templateUseOfDeprecatedIdentifier =
     const Template<Message Function(String name)>(
diff --git a/pkg/front_end/lib/src/fasta/incremental_compiler.dart b/pkg/front_end/lib/src/fasta/incremental_compiler.dart
index d16c7c2..399112b 100644
--- a/pkg/front_end/lib/src/fasta/incremental_compiler.dart
+++ b/pkg/front_end/lib/src/fasta/incremental_compiler.dart
@@ -431,8 +431,7 @@
     assert(dillLoadedData != null && userCode != null);
 
     return await context.runInContext((_) async {
-      LibraryBuilder library =
-          userCode.loader.read(libraryUri, -1, accessor: userCode.loader.first);
+      LibraryBuilder library = userCode.loader.read(libraryUri, -1);
 
       Class kernelClass;
       if (className != null) {
@@ -542,8 +541,8 @@
     List<Uri> invalidatedImportUris = <Uri>[];
 
     bool isInvalidated(Uri importUri, Uri fileUri) {
-      if (invalidatedUris.contains(importUri)) return true;
-      if (importUri != fileUri && invalidatedUris.contains(fileUri)) {
+      if (invalidatedUris.contains(importUri) ||
+          (importUri != fileUri && invalidatedUris.contains(fileUri))) {
         return true;
       }
       if (hasToCheckPackageUris &&
@@ -551,7 +550,6 @@
           uriTranslator.translate(importUri, false) != fileUri) {
         return true;
       }
-      if (builders[importUri]?.isSynthetic == true) return true;
       return false;
     }
 
diff --git a/pkg/front_end/lib/src/fasta/kernel/kernel_library_builder.dart b/pkg/front_end/lib/src/fasta/kernel/kernel_library_builder.dart
index 323e747..5d79c08 100644
--- a/pkg/front_end/lib/src/fasta/kernel/kernel_library_builder.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/kernel_library_builder.dart
@@ -12,7 +12,6 @@
         Class,
         ConstructorInvocation,
         DartType,
-        DynamicType,
         Expression,
         Field,
         Library,
@@ -166,12 +165,14 @@
 
   Uri get uri => library.importUri;
 
-  Declaration addSyntheticDeclarationOfDynamic() {
-    addBuilder(
-        "dynamic",
-        new DynamicTypeBuilder<KernelTypeBuilder, DartType>(
-            const DynamicType(), this, -1),
-        -1);
+  void becomeCoreLibrary(dynamicType) {
+    if (scope.local["dynamic"] == null) {
+      addBuilder(
+          "dynamic",
+          new DynamicTypeBuilder<KernelTypeBuilder, DartType>(
+              dynamicType, this, -1),
+          -1);
+    }
   }
 
   KernelTypeBuilder addNamedType(
diff --git a/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart b/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
index 650aa12..0715e41 100644
--- a/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/kernel_target.dart
@@ -15,6 +15,7 @@
         Component,
         Constructor,
         DartType,
+        DynamicType,
         EmptyStatement,
         Expression,
         ExpressionStatement,
@@ -152,7 +153,7 @@
   }
 
   void read(Uri uri) {
-    loader.read(uri, -1, accessor: loader.first);
+    loader.read(uri, -1);
   }
 
   @override
@@ -239,7 +240,7 @@
         () async {
           loader.createTypeInferenceEngine();
           await loader.buildOutlines();
-          loader.coreLibrary.becomeCoreLibrary();
+          loader.coreLibrary.becomeCoreLibrary(const DynamicType());
           dynamicType.bind(loader.coreLibrary["dynamic"]);
           loader.resolveParts();
           loader.computeLibraryScopes();
@@ -813,13 +814,13 @@
       KernelLibraryBuilder first;
       for (Uri patch in patches) {
         if (first == null) {
-          first = library.loader.read(patch, -1,
-              fileUri: patch, origin: library, accessor: library);
+          first =
+              library.loader.read(patch, -1, fileUri: patch, origin: library);
         } else {
           // If there's more than one patch file, it's interpreted as a part of
           // the patch library.
           KernelLibraryBuilder part =
-              library.loader.read(patch, -1, fileUri: patch, accessor: first);
+              library.loader.read(patch, -1, fileUri: patch);
           first.parts.add(part);
           part.addPartOf(null, null, "${first.uri}", -1);
         }
diff --git a/pkg/front_end/lib/src/fasta/loader.dart b/pkg/front_end/lib/src/fasta/loader.dart
index ae02c44..e37afdc 100644
--- a/pkg/front_end/lib/src/fasta/loader.dart
+++ b/pkg/front_end/lib/src/fasta/loader.dart
@@ -24,7 +24,7 @@
         templateInternalProblemMissingSeverity,
         templateSourceBodySummary;
 
-import 'problems.dart' show internalProblem, unhandled;
+import 'problems.dart' show internalProblem;
 
 import 'rewrite_severity.dart' as rewrite_severity;
 
@@ -38,8 +38,6 @@
 
 import 'type_inference/type_inference_engine.dart' show TypeInferenceEngine;
 
-const String untranslatableUriScheme = "org-dartlang-untranslatable-uri";
-
 abstract class Loader<L> {
   final Map<Uri, LibraryBuilder> builders = <Uri, LibraryBuilder>{};
 
@@ -83,8 +81,6 @@
 
   TypeInferenceEngine get typeInferenceEngine => null;
 
-  bool get isSourceLoader => false;
-
   /// Look up a library builder by the name [uri], or if such doesn't
   /// exist, create one. The canonical URI of the library is [uri], and its
   /// actual location is [fileUri].
@@ -109,10 +105,7 @@
         switch (uri.scheme) {
           case "package":
           case "dart":
-            fileUri = target.translateUri(uri) ??
-                new Uri(
-                    scheme: untranslatableUriScheme,
-                    path: Uri.encodeComponent("$uri"));
+            fileUri = target.translateUri(uri);
             break;
 
           default:
@@ -124,11 +117,9 @@
           target.createLibraryBuilder(uri, fileUri, origin);
       if (uri.scheme == "dart" && uri.path == "core") {
         coreLibrary = library;
+        target.loadExtraRequiredLibraries(this);
       }
       if (library.loader != this) {
-        if (coreLibrary == library) {
-          target.loadExtraRequiredLibraries(this);
-        }
         // This library isn't owned by this loader, so not further processing
         // should be attempted.
         return library;
@@ -141,9 +132,6 @@
         firstSourceUri ??= uri;
         first ??= library;
       }
-      if (coreLibrary == library) {
-        target.loadExtraRequiredLibraries(this);
-      }
       if (target.backendTarget.mayDefineRestrictedType(origin?.uri ?? uri)) {
         library.mayImplementRestrictedTypes = true;
       }
@@ -153,25 +141,19 @@
       unparsedLibraries.addLast(library);
       return library;
     });
-    if (accessor == null) {
-      if (builder.loader == this && first != builder && isSourceLoader) {
-        unhandled("null", "accessor", charOffset, uri);
-      }
-    } else {
-      builder.recordAccess(charOffset, noLength, accessor.fileUri);
-      if (!accessor.isPatch &&
-          !target.backendTarget
-              .allowPlatformPrivateLibraryAccess(accessor.uri, uri)) {
-        accessor.addCompileTimeError(messagePlatformPrivateLibraryAccess,
-            charOffset, noLength, accessor.fileUri);
-      }
+    if (accessor != null &&
+        !accessor.isPatch &&
+        !target.backendTarget
+            .allowPlatformPrivateLibraryAccess(accessor.uri, uri)) {
+      accessor.addCompileTimeError(messagePlatformPrivateLibraryAccess,
+          charOffset, noLength, accessor.fileUri);
     }
     return builder;
   }
 
   void ensureCoreLibrary() {
     if (coreLibrary == null) {
-      read(Uri.parse("dart:core"), 0, accessor: first);
+      read(Uri.parse("dart:core"), -1);
       assert(coreLibrary != null);
     }
   }
diff --git a/pkg/front_end/lib/src/fasta/rewrite_severity.dart b/pkg/front_end/lib/src/fasta/rewrite_severity.dart
index 60c18a9..6fc8581 100644
--- a/pkg/front_end/lib/src/fasta/rewrite_severity.dart
+++ b/pkg/front_end/lib/src/fasta/rewrite_severity.dart
@@ -53,6 +53,7 @@
       case "kernel/kernel_type_variable_builder.dart":
       case "source/diet_listener.dart":
       case "source/source_library_builder.dart":
+      case "source/source_loader.dart":
       case "source/stack_listener.dart":
         return severity;
     }
diff --git a/pkg/front_end/lib/src/fasta/source/source_library_builder.dart b/pkg/front_end/lib/src/fasta/source/source_library_builder.dart
index 7c1d989..75ee308 100644
--- a/pkg/front_end/lib/src/fasta/source/source_library_builder.dart
+++ b/pkg/front_end/lib/src/fasta/source/source_library_builder.dart
@@ -39,7 +39,6 @@
 
 import '../fasta_codes.dart'
     show
-        Message,
         messageConstructorWithWrongName,
         messageExpectedUri,
         messageMemberWithSameNameAsClass,
@@ -49,11 +48,11 @@
         noLength,
         templateConflictsWithMember,
         templateConflictsWithSetter,
-        templateConstructorWithWrongNameContext,
         templateCouldNotParseUri,
         templateDeferredPrefixDuplicated,
         templateDeferredPrefixDuplicatedCause,
         templateDuplicatedDefinition,
+        templateConstructorWithWrongNameContext,
         templateMissingPartOf,
         templatePartOfLibraryNameMismatch,
         templatePartOfUriMismatch,
@@ -98,8 +97,6 @@
   @override
   final bool disableTypeInference;
 
-  final List<Object> accessors = <Object>[];
-
   String documentationComment;
 
   String name;
@@ -118,10 +115,6 @@
 
   bool canAddImplementationBuilders = false;
 
-  /// Non-null if this library causes an error upon access, that is, there was
-  /// an error reading its source.
-  Message accessProblem;
-
   final OutlineListener outlineListener;
 
   SourceLibraryBuilder(SourceLoader loader, Uri fileUri, Scope scope)
@@ -143,9 +136,6 @@
 
   List<UnresolvedType<T>> get types => libraryDeclaration.types;
 
-  @override
-  bool get isSynthetic => accessProblem != null;
-
   T addNamedType(Object name, List<T> arguments, int charOffset);
 
   T addMixinApplication(T supertype, List<T> mixins, int charOffset);
@@ -813,28 +803,6 @@
       member.instrumentTopLevelInference(instrumentation);
     });
   }
-
-  @override
-  void recordAccess(int charOffset, int length, Uri fileUri) {
-    accessors.add(fileUri);
-    accessors.add(charOffset);
-    accessors.add(length);
-    if (accessProblem != null) {
-      addProblem(accessProblem, charOffset, length, fileUri);
-    }
-  }
-
-  void addProblemAtAccessors(Message message) {
-    if (accessProblem == null) {
-      for (int i = 0; i < accessors.length; i += 3) {
-        Uri accessor = accessors[i];
-        int charOffset = accessors[i + 1];
-        int length = accessors[i + 2];
-        addProblem(message, charOffset, length, accessor);
-      }
-      accessProblem = message;
-    }
-  }
 }
 
 /// Unlike [Scope], this scope is used during construction of builders to
diff --git a/pkg/front_end/lib/src/fasta/source/source_loader.dart b/pkg/front_end/lib/src/fasta/source/source_loader.dart
index 918fe74..9c65335 100644
--- a/pkg/front_end/lib/src/fasta/source/source_loader.dart
+++ b/pkg/front_end/lib/src/fasta/source/source_loader.dart
@@ -6,8 +6,6 @@
 
 import 'dart:async' show Future;
 
-import 'dart:convert' show utf8;
-
 import 'dart:typed_data' show Uint8List;
 
 import 'package:kernel/ast.dart'
@@ -49,17 +47,18 @@
 
 import '../combinator.dart';
 
+import '../deprecated_problems.dart' show deprecated_inputError;
+
 import '../export.dart' show Export;
 
 import '../fasta_codes.dart'
     show
         LocatedMessage,
         Message,
+        noLength,
         SummaryTemplate,
         Template,
-        noLength,
         templateAmbiguousSupertypes,
-        templateCantReadFile,
         templateCyclicClassHierarchy,
         templateExtendingEnum,
         templateExtendingRestricted,
@@ -67,8 +66,7 @@
         templateIllegalMixinDueToConstructors,
         templateIllegalMixinDueToConstructorsCause,
         templateInternalProblemUriMissingScheme,
-        templateSourceOutlineSummary,
-        templateUntranslatableUri;
+        templateSourceOutlineSummary;
 
 import '../fasta_codes.dart' as fasta_codes;
 
@@ -81,7 +79,7 @@
 
 import '../kernel/body_builder.dart' show BodyBuilder;
 
-import '../loader.dart' show Loader, untranslatableUriScheme;
+import '../loader.dart' show Loader;
 
 import '../parser/class_member_parser.dart' show ClassMemberParser;
 
@@ -144,53 +142,35 @@
   Template<SummaryTemplate> get outlineSummaryTemplate =>
       templateSourceOutlineSummary;
 
-  bool get isSourceLoader => true;
-
   Future<Token> tokenize(SourceLibraryBuilder library,
       {bool suppressLexicalErrors: false}) async {
     Uri uri = library.fileUri;
-
-    // Lookup the file URI in the cache.
-    List<int> bytes = sourceBytes[uri];
-
-    if (bytes == null) {
-      // Error recovery.
-      if (uri.scheme == untranslatableUriScheme) {
-        Message message = templateUntranslatableUri.withArguments(library.uri);
-        library.addProblemAtAccessors(message);
-        bytes = synthesizeSourceForMissingFile(library.uri, null);
-      } else if (!uri.hasScheme) {
-        return internalProblem(
-            templateInternalProblemUriMissingScheme.withArguments(uri),
-            -1,
-            library.uri);
-      } else if (uri.scheme == SourceLibraryBuilder.MALFORMED_URI_SCHEME) {
-        bytes = synthesizeSourceForMissingFile(library.uri, null);
-      }
-      if (bytes != null) {
-        Uint8List zeroTerminatedBytes = new Uint8List(bytes.length + 1);
-        zeroTerminatedBytes.setRange(0, bytes.length, bytes);
-        bytes = zeroTerminatedBytes;
-        sourceBytes[uri] = bytes;
-      }
+    if (uri == null) {
+      return deprecated_inputError(
+          library.uri, -1, "Not found: ${library.uri}.");
+    } else if (!uri.hasScheme) {
+      return internalProblem(
+          templateInternalProblemUriMissingScheme.withArguments(uri),
+          -1,
+          library.uri);
+    } else if (uri.scheme == SourceLibraryBuilder.MALFORMED_URI_SCHEME) {
+      // Simulate empty file
+      return null;
     }
 
+    // Get the library text from the cache, or read from the file system.
+    List<int> bytes = sourceBytes[uri];
     if (bytes == null) {
-      // If it isn't found in the cache, read the file read from the file
-      // system.
-      List<int> rawBytes;
       try {
-        rawBytes = await fileSystem.entityForUri(uri).readAsBytes();
+        List<int> rawBytes = await fileSystem.entityForUri(uri).readAsBytes();
+        Uint8List zeroTerminatedBytes = new Uint8List(rawBytes.length + 1);
+        zeroTerminatedBytes.setRange(0, rawBytes.length, rawBytes);
+        bytes = zeroTerminatedBytes;
+        sourceBytes[uri] = bytes;
+        byteCount += rawBytes.length;
       } on FileSystemException catch (e) {
-        Message message = templateCantReadFile.withArguments(uri, e.message);
-        library.addProblemAtAccessors(message);
-        rawBytes = synthesizeSourceForMissingFile(library.uri, message);
+        return deprecated_inputError(uri, -1, e.message);
       }
-      Uint8List zeroTerminatedBytes = new Uint8List(rawBytes.length + 1);
-      zeroTerminatedBytes.setRange(0, rawBytes.length, rawBytes);
-      bytes = zeroTerminatedBytes;
-      sourceBytes[uri] = bytes;
-      byteCount += rawBytes.length;
     }
 
     ScannerResult result = scan(bytes, includeComments: includeComments);
@@ -210,19 +190,6 @@
     return token;
   }
 
-  List<int> synthesizeSourceForMissingFile(Uri uri, Message message) {
-    switch ("$uri") {
-      case "dart:core":
-        return utf8.encode(defaultDartCoreSource);
-
-      case "dart:async":
-        return utf8.encode(defaultDartAsyncSource);
-
-      default:
-        return utf8.encode(message == null ? "" : "/* ${message.message} */");
-    }
-  }
-
   List<int> getSource(List<int> bytes) {
     // bytes is 0-terminated. We don't want that included.
     if (bytes is Uint8List) {
@@ -671,7 +638,7 @@
       if (library.loader == this) {
         SourceLibraryBuilder sourceLibrary = library;
         L target = sourceLibrary.build(coreLibrary);
-        if (!library.isPatch && !library.isSynthetic) {
+        if (!library.isPatch) {
           libraries.add(target);
         }
       }
@@ -685,7 +652,6 @@
     builders.forEach((Uri uri, LibraryBuilder library) {
       if (!library.isPart &&
           !library.isPatch &&
-          !library.isSynthetic &&
           (library.loader == this || library.fileUri.scheme == "dart")) {
         if (libraries.add(library.target)) {
           workList.add(library.target);
@@ -1022,114 +988,3 @@
     }
   }
 }
-
-const String defaultDartCoreSource = """
-print(object) {}
-
-class Iterator {}
-
-class Iterable {}
-
-class List extends Iterable {
-  factory List.unmodifiable(elements) => null;
-}
-
-class Map extends Iterable {
-  factory Map.unmodifiable(other) => null;
-}
-
-class NoSuchMethodError {
-  NoSuchMethodError.withInvocation(receiver, invocation);
-}
-
-class Null {}
-
-class Object {
-  noSuchMethod(invocation) => null;
-}
-
-class String {}
-
-class Symbol {}
-
-class Type {}
-
-class _InvocationMirror {
-  _InvocationMirror._withType(_memberName, _type, _typeArguments,
-      _positionalArguments, _namedArguments);
-}
-
-class bool {}
-
-class double extends num {}
-
-class int extends num {}
-
-class num {}
-
-class _SyncIterable {}
-
-class _SyncIterator {
-  var _current;
-  var _yieldEachIterable;
-}
-""";
-
-const String defaultDartAsyncSource = """
-_asyncErrorWrapperHelper(continuation) {}
-
-_asyncStackTraceHelper(async_op) {}
-
-_asyncThenWrapperHelper(continuation) {}
-
-_awaitHelper(object, thenCallback, errorCallback, awaiter) {}
-
-_completeOnAsyncReturn(completer, value) {}
-
-class _AsyncStarStreamController {
-  add(event) {}
-
-  addError(error, stackTrace) {}
-
-  addStream(stream) {}
-
-  close() {}
-
-  get stream => null;
-}
-
-class Completer {
-  factory Completer.sync() => null;
-
-  get future;
-
-  complete([value]);
-
-  completeError(error, [stackTrace]);
-}
-
-class Future {
-  factory Future.microtask(computation) => null;
-}
-
-class FutureOr {
-}
-
-class _AsyncAwaitCompleter implements Completer {
-  get future => null;
-
-  complete([value]) {}
-
-  completeError(error, [stackTrace]) {}
-}
-
-class Stream {}
-
-class _StreamIterator {
-  get current => null;
-
-  moveNext() {}
-
-  cancel() {}
-}
-""";
diff --git a/pkg/front_end/lib/src/fasta/target_implementation.dart b/pkg/front_end/lib/src/fasta/target_implementation.dart
index 08581aa..3361321 100644
--- a/pkg/front_end/lib/src/fasta/target_implementation.dart
+++ b/pkg/front_end/lib/src/fasta/target_implementation.dart
@@ -94,14 +94,13 @@
   /// type String, which is the name of the native method.
   Declaration getNativeAnnotation(Loader loader) {
     if (cachedNativeAnnotation != null) return cachedNativeAnnotation;
-    LibraryBuilder internal = loader.read(Uri.parse("dart:_internal"), -1,
-        accessor: loader.coreLibrary);
+    LibraryBuilder internal = loader.read(Uri.parse("dart:_internal"), -1);
     return cachedNativeAnnotation = internal.getConstructor("ExternalName");
   }
 
   void loadExtraRequiredLibraries(Loader loader) {
     for (String uri in backendTarget.extraRequiredLibraries) {
-      loader.read(Uri.parse(uri), 0, accessor: loader.coreLibrary);
+      loader.read(Uri.parse(uri), -1);
     }
   }
 
diff --git a/pkg/front_end/messages.yaml b/pkg/front_end/messages.yaml
index 666d946..97c4778 100644
--- a/pkg/front_end/messages.yaml
+++ b/pkg/front_end/messages.yaml
@@ -2951,25 +2951,3 @@
   template: "'rethrow' can only be used in catch clauses."
   analyzerCode: RETHROW_OUTSIDE_CATCH
   dart2jsCode: "*fatal*"
-
-UntranslatableUri:
-  template: "Not found: '#uri'"
-  dart2jsCode: "*fatal*"
-  severity: ERROR
-  analyzerCode: URI_DOES_NOT_EXIST
-  script: |
-    import "dart:non_existing_library";
-
-    main() {
-    }
-
-CantReadFile:
-  template: "Error when reading '#uri': #string"
-  analyzerCode: URI_DOES_NOT_EXIST
-  dart2jsCode: "*fatal*"
-  severity: ERROR
-  script: |
-    import "non_existing_file.dart";
-
-    main() {
-    }
diff --git a/pkg/front_end/test/incremental_load_from_dill_test.dart b/pkg/front_end/test/incremental_load_from_dill_test.dart
index 68f91f0..70f828e 100644
--- a/pkg/front_end/test/incremental_load_from_dill_test.dart
+++ b/pkg/front_end/test/incremental_load_from_dill_test.dart
@@ -35,8 +35,6 @@
 
 import 'package:kernel/target/targets.dart' show TargetFlags;
 
-import 'package:kernel/text/ast_to_text.dart' show componentToString;
-
 import "package:testing/testing.dart"
     show Chain, ChainContext, Result, Step, TestDescription, runMe;
 
@@ -279,7 +277,6 @@
     util.throwOnEmptyMixinBodies(component);
     print("Compile took ${stopwatch.elapsedMilliseconds} ms");
     newestWholeComponent = serializeComponent(component);
-    print("*****\n\ncomponent:\n${componentToString(component)}\n\n\n");
     if (component.libraries.length != world["expectedLibraryCount"]) {
       throw "Expected ${world["expectedLibraryCount"]} libraries, "
           "got ${component.libraries.length}";
@@ -320,7 +317,6 @@
       performErrorAndWarningCheck(
           world, gotError, formattedErrors, gotWarning, formattedWarnings);
       List<int> thisWholeComponent = serializeComponent(component2);
-      print("*****\n\ncomponent2:\n${componentToString(component2)}\n\n\n");
       checkIsEqual(newestWholeComponent, thisWholeComponent);
     }
   }
diff --git a/pkg/front_end/test/kernel_generator_test.dart b/pkg/front_end/test/kernel_generator_test.dart
index 123aff7..083c293 100644
--- a/pkg/front_end/test/kernel_generator_test.dart
+++ b/pkg/front_end/test/kernel_generator_test.dart
@@ -48,7 +48,7 @@
           await compileScript('main() => print("hi");', options: options);
       expect(component, isNull);
       expect(errors, isNotEmpty);
-    }, skip: true);
+    });
 
     test('compiler fails if it cannot find sdk summary', () async {
       var errors = [];
@@ -61,7 +61,7 @@
           await compileScript('main() => print("hi");', options: options);
       expect(component, isNull);
       expect(errors, isNotEmpty);
-    }, skip: true);
+    });
 
     test('by default component is compiled using the full platform file',
         () async {
diff --git a/pkg/front_end/testcases/compile.status b/pkg/front_end/testcases/compile.status
index ca404d3..cd8199e 100644
--- a/pkg/front_end/testcases/compile.status
+++ b/pkg/front_end/testcases/compile.status
@@ -6,16 +6,28 @@
 # testing generating Kernel ASTs directly, that is, code in
 # pkg/fasta/lib/src/kernel/.
 
+rasta/unsupported_platform_library: RuntimeError # OK, this must report an error at runtime.
+
 DeltaBlue: Fail # Fasta and dartk disagree on static initializers
-ambiguous_exports: RuntimeError # Expected, this file exports two main methods.
 bug31124: RuntimeError # Test has an intentional error
 call: Fail # Test can't run.
-co19_language_metadata_syntax_t04: RuntimeError # Fasta doesn't recover well
-constructor_const_inference: RuntimeError # Test exercises strong mode semantics.  See also Issue #33813.
-external_import: RuntimeError # Expected -- test uses import which doesn't exist.
 fallthrough: Fail # Missing FallThroughError.
 function_type_recovery: Fail
-incomplete_field_formal_parameter: Fail # Fasta doesn't recover well
+invocations: Fail
+micro: Fail # External method marked abstract.
+named_parameters: Fail # Missing types and unnecessary default values.
+optional: Fail # Unnecessary default values.
+redirecting_factory: Fail # Missing types on constructor parameters.
+redirecting_factory_chain_test: Fail # Missing support for RedirectingFactoryConstructor.
+redirecting_factory_simple_test: Fail # Missing support for RedirectingFactoryConstructor.
+redirecting_factory_typeargs_test: Fail # Missing support for RedirectingFactoryConstructor.
+redirecting_factory_typeparam_test: Fail # Missing support for RedirectingFactoryConstructor.
+redirecting_factory_typeparambounds_test: Fail # Missing support for RedirectingFactoryConstructor.
+statements: Fail # Make async tranformer optional for golden file testing.
+type_variable_as_super: Fail
+uninitialized_fields: Fail # Fasta and dartk disagree on static initializers
+void_methods: Fail # Bad return from setters.
+
 inference/bug31436: RuntimeError # Test exercises Dart 2.0 semantics
 inference/constructors_too_many_positional_arguments: Fail
 inference/downwards_inference_annotations_locals: Fail # Issue #30031
@@ -29,13 +41,11 @@
 inference/unsafe_block_closure_inference_function_call_explicit_dynamic_param_via_expr1: Fail
 inference/unsafe_block_closure_inference_function_call_explicit_type_param_via_expr1: Fail
 inference/unsafe_block_closure_inference_function_call_explicit_type_param_via_expr2: RuntimeError
+
 instantiate_to_bound/body_typedef_super_bounded_type: Fail # Issue 33444
 instantiate_to_bound/non_simple_class_parametrized_typedef_cycle: RuntimeError # May be related to Issue 33479
 instantiate_to_bound/typedef_super_bounded_type: Fail # Issue 33444
-invocations: Fail
-micro: Fail # External method marked abstract.
-named_parameters: Fail # Missing types and unnecessary default values.
-optional: Fail # Unnecessary default values.
+
 rasta/abstract_constructor: Fail
 rasta/bad_constructor_redirection: Fail
 rasta/bad_continue: Fail
@@ -52,10 +62,7 @@
 rasta/constant_get_and_invoke: Fail
 rasta/deferred_lib: Fail
 rasta/deferred_load: Fail
-rasta/duplicated_mixin: RuntimeError # Expected, this file has no main method.
-rasta/export: RuntimeError # Expected, this file has no main method.
 rasta/external_factory_redirection: Fail
-rasta/foo: RuntimeError # Expected, this file has no main method.
 rasta/for_loop: Fail
 rasta/generic_factory: Fail
 rasta/issue_000001: Fail
@@ -91,18 +98,13 @@
 rasta/unresolved_constructor: Fail
 rasta/unresolved_for_in: RuntimeError # Test contains a compile-time error, signaled at run time in the JIT VM
 rasta/unresolved_recovery: Fail
-redirecting_factory: Fail # Missing types on constructor parameters.
-redirecting_factory_chain_test: Fail # Missing support for RedirectingFactoryConstructor.
-redirecting_factory_const_inference: RuntimeError # Test exercises strong mode semantics.  See also Issue #33813.
-redirecting_factory_simple_test: Fail # Missing support for RedirectingFactoryConstructor.
-redirecting_factory_typeargs_test: Fail # Missing support for RedirectingFactoryConstructor.
-redirecting_factory_typeparam_test: Fail # Missing support for RedirectingFactoryConstructor.
-redirecting_factory_typeparambounds_test: Fail # Missing support for RedirectingFactoryConstructor.
+
 regress/issue_29975: Fail # Issue 29975.
 regress/issue_29976: RuntimeError # Issue 29976.
 regress/issue_29982: Fail # Issue 29982.
 regress/issue_30836: RuntimeError # Issue 30836.
 regress/issue_33452: RuntimeError # Test has an intentional error
+
 runtime_checks/implicit_downcast_constructor_initializer: RuntimeError # Test exercises strong mode semantics
 runtime_checks/implicit_downcast_do: RuntimeError # Test exercises strong mode semantics
 runtime_checks/implicit_downcast_for_condition: RuntimeError # Test exercises strong mode semantics
@@ -115,9 +117,15 @@
 runtime_checks_new/mixin_forwarding_stub_getter: RuntimeError # Test exercises strong mode semantics
 runtime_checks_new/mixin_forwarding_stub_setter: RuntimeError # Test exercises strong mode semantics
 runtime_checks_new/stub_checked_via_target: RuntimeError # Test exercises strong mode semantics
-statements: Fail # Make async tranformer optional for golden file testing.
-type_variable_as_super: Fail
-uninitialized_fields: Fail # Fasta and dartk disagree on static initializers
-void_methods: Fail # Bad return from setters.
+constructor_const_inference: RuntimeError # Test exercises strong mode semantics.  See also Issue #33813.
+redirecting_factory_const_inference: RuntimeError # Test exercises strong mode semantics.  See also Issue #33813.
 
-rasta/unsupported_platform_library: Fail
+ambiguous_exports: RuntimeError # Expected, this file exports two main methods.
+rasta/duplicated_mixin: RuntimeError # Expected, this file has no main method.
+rasta/export: RuntimeError # Expected, this file has no main method.
+rasta/foo: RuntimeError # Expected, this file has no main method.
+
+incomplete_field_formal_parameter: Fail # Fasta doesn't recover well
+
+co19_language_metadata_syntax_t04: RuntimeError # Fasta doesn't recover well
+external_import: RuntimeError # Expected -- test uses import which doesn't exist.
diff --git a/pkg/front_end/testcases/incremental_initialize_from_dill/deleting_file.yaml b/pkg/front_end/testcases/incremental_initialize_from_dill/deleting_file.yaml
index 2933c37..970db47 100644
--- a/pkg/front_end/testcases/incremental_initialize_from_dill/deleting_file.yaml
+++ b/pkg/front_end/testcases/incremental_initialize_from_dill/deleting_file.yaml
@@ -24,7 +24,7 @@
     expectedLibraryCount: 2
   - entry: main.dart
     errors: true
-    warnings: true
+    warnings: false
     invalidate:
       - b.dart
     sources:
@@ -37,7 +37,7 @@
     expectedLibraryCount: 1
   - entry: main.dart
     errors: true
-    warnings: true
+    warnings: false
     checkInvalidatedFiles: false
     worldType: updated
     invalidate:
@@ -52,7 +52,7 @@
     expectedLibraryCount: 1
   - entry: main.dart
     errors: true
-    warnings: true
+    warnings: false
     checkInvalidatedFiles: false
     worldType: updated
     invalidate:
@@ -64,4 +64,4 @@
           print("Hello no. 1");
           b();
         }
-    expectedLibraryCount: 1
+    expectedLibraryCount: 1
\ No newline at end of file
diff --git a/pkg/front_end/testcases/incremental_initialize_from_dill/invalidation_across_compile_time_error.yaml b/pkg/front_end/testcases/incremental_initialize_from_dill/invaldation_across_compile_time_error.yaml
similarity index 96%
rename from pkg/front_end/testcases/incremental_initialize_from_dill/invalidation_across_compile_time_error.yaml
rename to pkg/front_end/testcases/incremental_initialize_from_dill/invaldation_across_compile_time_error.yaml
index c627364..f1213e3 100644
--- a/pkg/front_end/testcases/incremental_initialize_from_dill/invalidation_across_compile_time_error.yaml
+++ b/pkg/front_end/testcases/incremental_initialize_from_dill/invaldation_across_compile_time_error.yaml
@@ -40,7 +40,7 @@
     sources:
       main.dart: |
         import "b.dart";
-        import "nonexisting.dart";
+        import "nonexistin.dart";
         main() {
           print("hello");
           b();
@@ -52,7 +52,7 @@
           c();
         }
     errors: true
-    expectedLibraryCount: 3
+    expectedLibraryCount: 1
   - entry: main.dart
     worldType: updated
     expectInitializeFromDill: false
@@ -66,4 +66,4 @@
           print("hello");
           b();
         }
-    expectedLibraryCount: 3
+    expectedLibraryCount: 3
\ No newline at end of file
diff --git a/pkg/front_end/testcases/incremental_initialize_from_dill/updated_package_4.yaml b/pkg/front_end/testcases/incremental_initialize_from_dill/updated_package_4.yaml
index b59c18e..84a4e54 100644
--- a/pkg/front_end/testcases/incremental_initialize_from_dill/updated_package_4.yaml
+++ b/pkg/front_end/testcases/incremental_initialize_from_dill/updated_package_4.yaml
@@ -32,5 +32,4 @@
     sources:
       .packages:
     errors: true
-    warnings: true
-    expectedLibraryCount: 1
+    expectedLibraryCount: 1
\ No newline at end of file
diff --git a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart b/pkg/front_end/testcases/rasta/unsupported_platform_library.dart
index fa8123d..ca1de9b 100644
--- a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart
+++ b/pkg/front_end/testcases/rasta/unsupported_platform_library.dart
@@ -4,5 +4,3 @@
 
 import 'dart:html';
 import 'dart:io';
-
-main() {}
diff --git a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.direct.expect b/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.direct.expect
index 0c3e32a..7073760 100644
--- a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.direct.expect
@@ -1,10 +1,6 @@
-// Errors:
-//
-// pkg/front_end/testcases/rasta/unsupported_platform_library.dart:5:8: Error: Not found: 'dart:html'
-// import 'dart:html';
-//        ^
-
 library;
 import self as self;
 
-static method main() → dynamic {}
+static method #main() → dynamic {
+  throw "dart:html:1: Error: Not found: dart:html.";
+}
diff --git a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.direct.transformed.expect b/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.direct.transformed.expect
index 0c3e32a..7073760 100644
--- a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.direct.transformed.expect
+++ b/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.direct.transformed.expect
@@ -1,10 +1,6 @@
-// Errors:
-//
-// pkg/front_end/testcases/rasta/unsupported_platform_library.dart:5:8: Error: Not found: 'dart:html'
-// import 'dart:html';
-//        ^
-
 library;
 import self as self;
 
-static method main() → dynamic {}
+static method #main() → dynamic {
+  throw "dart:html:1: Error: Not found: dart:html.";
+}
diff --git a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.outline.expect b/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.outline.expect
index 6a28c0d..cc97b3e 100644
--- a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.outline.expect
+++ b/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.outline.expect
@@ -1,5 +1,2 @@
 library;
 import self as self;
-
-static method main() → dynamic
-  ;
diff --git a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.strong.expect b/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.strong.expect
deleted file mode 100644
index 0c3e32a..0000000
--- a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.strong.expect
+++ /dev/null
@@ -1,10 +0,0 @@
-// Errors:
-//
-// pkg/front_end/testcases/rasta/unsupported_platform_library.dart:5:8: Error: Not found: 'dart:html'
-// import 'dart:html';
-//        ^
-
-library;
-import self as self;
-
-static method main() → dynamic {}
diff --git a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.strong.transformed.expect b/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.strong.transformed.expect
deleted file mode 100644
index 0c3e32a..0000000
--- a/pkg/front_end/testcases/rasta/unsupported_platform_library.dart.strong.transformed.expect
+++ /dev/null
@@ -1,10 +0,0 @@
-// Errors:
-//
-// pkg/front_end/testcases/rasta/unsupported_platform_library.dart:5:8: Error: Not found: 'dart:html'
-// import 'dart:html';
-//        ^
-
-library;
-import self as self;
-
-static method main() → dynamic {}
diff --git a/pkg/front_end/testcases/strong.status b/pkg/front_end/testcases/strong.status
index 5efafdf..b5d4f7b 100644
--- a/pkg/front_end/testcases/strong.status
+++ b/pkg/front_end/testcases/strong.status
@@ -191,6 +191,7 @@
 rasta/unresolved_constructor: Fail
 rasta/unresolved_for_in: Fail
 rasta/unresolved_recovery: Fail
+rasta/unsupported_platform_library: Fail
 
 regress/issue_29975: Fail # Issue 29975.
 regress/issue_29976: TypeCheckError # Issue 29976.
@@ -219,5 +220,3 @@
 co19_language_metadata_syntax_t04: RuntimeError # Fasta doesn't recover well
 
 external_import: RuntimeError # The native extension to import doesn't exist. This is ok.
-
-rasta/unsupported_platform_library: Fail
diff --git a/pkg/front_end/tool/fasta_perf.dart b/pkg/front_end/tool/fasta_perf.dart
index 4b9fb26..ea099cd 100644
--- a/pkg/front_end/tool/fasta_perf.dart
+++ b/pkg/front_end/tool/fasta_perf.dart
@@ -243,7 +243,23 @@
     options.sdkSummary = sdkRoot.resolve('outline.dill');
   }
 
-  var program = await kernelForComponent([entryUri], options);
+  var entrypoints = [
+    entryUri,
+    // These extra libraries are added to match the same set of libraries
+    // scanned by default by the VM and the other benchmarks.
+    Uri.parse('dart:async'),
+    Uri.parse('dart:collection'),
+    Uri.parse('dart:convert'),
+    Uri.parse('dart:core'),
+    Uri.parse('dart:developer'),
+    Uri.parse('dart:_internal'),
+    Uri.parse('dart:io'),
+    Uri.parse('dart:isolate'),
+    Uri.parse('dart:math'),
+    Uri.parse('dart:mirrors'),
+    Uri.parse('dart:typed_data'),
+  ];
+  var program = await kernelForComponent(entrypoints, options);
 
   timer.stop();
   var name = 'kernel_gen_e2e${compileSdk ? "" : "_sum"}';
diff --git a/pkg/vm/test/frontend_server_test.dart b/pkg/vm/test/frontend_server_test.dart
index ab3713d..75c22d1 100644
--- a/pkg/vm/test/frontend_server_test.dart
+++ b/pkg/vm/test/frontend_server_test.dart
@@ -578,7 +578,7 @@
           expect(outputFilenameAndErrorCount, isNotNull);
           CompilationResult result =
               new CompilationResult.parse(outputFilenameAndErrorCount);
-          expect(result.errorsCount, equals(0));
+          expect(result.errorsCount, greaterThan(0));
 
           streamController.add('quit\n'.codeUnits);
         }
diff --git a/runtime/observatory/tests/service/service_kernel.status b/runtime/observatory/tests/service/service_kernel.status
index b1f90ed..e90e5a5 100644
--- a/runtime/observatory/tests/service/service_kernel.status
+++ b/runtime/observatory/tests/service/service_kernel.status
@@ -121,7 +121,6 @@
 # These are the non-kernel specific versions so skip tests and allow errors.
 [ $compiler == dartk ]
 add_breakpoint_rpc_test: SkipByDesign # non-kernel specific version of add_breakpoint_rpc_kernel_test.
-bad_reload_test: RuntimeError # Issue 34025
 evaluate_activation_in_method_class_test: RuntimeError
 evaluate_activation_test/instance: RuntimeError # http://dartbug.com/20047
 evaluate_activation_test/scope: RuntimeError # http://dartbug.com/20047
diff --git a/tests/compiler/dart2js/user_crash_test.dart b/tests/compiler/dart2js/user_crash_test.dart
index 68076d5..e26e508 100644
--- a/tests/compiler/dart2js/user_crash_test.dart
+++ b/tests/compiler/dart2js/user_crash_test.dart
@@ -40,8 +40,8 @@
         expectedExceptions: [EXCEPTION]);
 
     List<String> expectedLines = [
-      "Error: Input file not found: memory:main.dart.",
-      "memory:main.dart:\nError: No 'main' method found.",
+      'Error: Input file not found: memory:main.dart.',
+      'memory:main.dart:\nError: Crash-marker',
     ];
     test('Throw in input provider',
         await run(memorySourceFiles: new CrashingMap()),
@@ -69,7 +69,7 @@
       "Unexpected number of exceptions.");
   for (int i = 0; i < expectedLines.length; i++) {
     if (expectedLines[i] != null) {
-      Expect.stringEquals(expectedLines[i], result.lines[i]);
+      Expect.equals(expectedLines[i], result.lines[i]);
     }
   }
 }