diff --git a/pkg/compiler/lib/src/kernel/front_end_adapter.dart b/pkg/compiler/lib/src/kernel/front_end_adapter.dart
index 2b00b6107d3..808404df514 100644
--- a/pkg/compiler/lib/src/kernel/front_end_adapter.dart
+++ b/pkg/compiler/lib/src/kernel/front_end_adapter.dart
@@ -96,9 +96,6 @@ void reportFrontEndMessage(
     case fe.Severity.warning:
       reporter.reportWarningMessage(span, kind, {'text': message.message});
       break;
-    case fe.Severity.nit:
-      reporter.reportHintMessage(span, kind, {'text': message.message});
-      break;
     case fe.Severity.context:
       reporter.reportInfo(span, kind, {'text': message.message});
       break;
diff --git a/pkg/front_end/lib/src/api_prototype/compiler_options.dart b/pkg/front_end/lib/src/api_prototype/compiler_options.dart
index c39a3980b33..dd5a2e787d4 100644
--- a/pkg/front_end/lib/src/api_prototype/compiler_options.dart
+++ b/pkg/front_end/lib/src/api_prototype/compiler_options.dart
@@ -212,10 +212,4 @@ class CompilerOptions {
   ///
   /// Typically used by developers to debug internals of the compiler.
   bool throwOnWarningsForDebugging = false;
-
-  /// Whether the compiler should throw as soon as it encounters a
-  /// compilation nit.
-  ///
-  /// Typically used by developers to debug internals of the compiler.
-  bool throwOnNitsForDebugging = false;
 }
diff --git a/pkg/front_end/lib/src/base/processed_options.dart b/pkg/front_end/lib/src/base/processed_options.dart
index 08b60571d2c..adb0ca41b1f 100644
--- a/pkg/front_end/lib/src/base/processed_options.dart
+++ b/pkg/front_end/lib/src/base/processed_options.dart
@@ -170,8 +170,6 @@ class ProcessedOptions {
 
   bool get throwOnWarningsForDebugging => _raw.throwOnWarningsForDebugging;
 
-  bool get throwOnNitsForDebugging => _raw.throwOnNitsForDebugging;
-
   /// The entry-points provided to the compiler.
   final List<Uri> inputs;
 
@@ -630,7 +628,6 @@ class ProcessedOptions {
 
     sb.writeln('throwOnErrorsForDebugging: ${throwOnErrorsForDebugging}');
     sb.writeln('throwOnWarningsForDebugging: ${throwOnWarningsForDebugging}');
-    sb.writeln('throwOnNitsForDebugging: ${throwOnNitsForDebugging}');
     sb.writeln('exit on problem: ${setExitCodeOnProblem}');
     sb.writeln('Embed sources: ${embedSourceText}');
     sb.writeln('debugDump: ${debugDump}');
diff --git a/pkg/front_end/lib/src/fasta/command_line_reporting.dart b/pkg/front_end/lib/src/fasta/command_line_reporting.dart
index fe28e9c8b0d..c7f93ee6298 100644
--- a/pkg/front_end/lib/src/fasta/command_line_reporting.dart
+++ b/pkg/front_end/lib/src/fasta/command_line_reporting.dart
@@ -12,7 +12,7 @@ import 'dart:io' show exitCode;
 
 import 'package:kernel/ast.dart' show Location;
 
-import 'colors.dart' show cyan, green, magenta, red;
+import 'colors.dart' show green, magenta, red;
 
 import 'compiler_context.dart' show CompilerContext;
 
@@ -23,7 +23,7 @@ import 'fasta_codes.dart' show LocatedMessage;
 
 import 'messages.dart' show getLocation, getSourceLine, isVerbose;
 
-import 'problems.dart' show unexpected;
+import 'problems.dart' show unhandled;
 
 import 'severity.dart' show Severity;
 
@@ -54,10 +54,6 @@ String format(LocatedMessage message, Severity severity, {Location location}) {
           text = red(text);
           break;
 
-        case Severity.nit:
-          text = cyan(text);
-          break;
-
         case Severity.warning:
           text = magenta(text);
           break;
@@ -67,7 +63,7 @@ String format(LocatedMessage message, Severity severity, {Location location}) {
           break;
 
         default:
-          return unexpected("$severity", "format", -1, null);
+          return unhandled("$severity", "format", -1, null);
       }
     }
 
@@ -95,7 +91,7 @@ String format(LocatedMessage message, Severity severity, {Location location}) {
         sourceLine = "\n$sourceLine\n$pointer";
       }
       String position =
-          location == null ? "" : ":${location.line}:${location.column}";
+          location == null ? ":1" : ":${location.line}:${location.column}";
       return "$path$position: $text$sourceLine";
     } else {
       return text;
@@ -117,14 +113,11 @@ bool isHidden(Severity severity) {
     case Severity.context:
       return false;
 
-    case Severity.nit:
-      return !isVerbose;
-
     case Severity.warning:
       return hideWarnings;
 
     default:
-      return unexpected("$severity", "isHidden", -1, null);
+      return unhandled("$severity", "isHidden", -1, null);
   }
 }
 
@@ -138,9 +131,6 @@ bool shouldThrowOn(Severity severity) {
     case Severity.internalProblem:
       return true;
 
-    case Severity.nit:
-      return CompilerContext.current.options.throwOnNitsForDebugging;
-
     case Severity.warning:
       return CompilerContext.current.options.throwOnWarningsForDebugging;
 
@@ -148,7 +138,7 @@ bool shouldThrowOn(Severity severity) {
       return false;
 
     default:
-      return unexpected("$severity", "shouldThrowOn", -1, null);
+      return unhandled("$severity", "shouldThrowOn", -1, null);
   }
 }
 
@@ -161,9 +151,6 @@ String severityName(Severity severity, {bool capitalized: false}) {
     case Severity.internalProblem:
       return capitalized ? "Internal problem" : "internal problem";
 
-    case Severity.nit:
-      return capitalized ? "Nit" : "nit";
-
     case Severity.warning:
       return capitalized ? "Warning" : "warning";
 
@@ -171,7 +158,7 @@ String severityName(Severity severity, {bool capitalized: false}) {
       return capitalized ? "Context" : "context";
 
     default:
-      return unexpected("$severity", "severityName", -1, null);
+      return unhandled("$severity", "severityName", -1, null);
   }
 }
 
@@ -208,12 +195,14 @@ bool isCompileTimeError(Severity severity) {
     case Severity.errorLegacyWarning:
       return CompilerContext.current.options.strongMode;
 
-    case Severity.nit:
     case Severity.warning:
     case Severity.context:
       return false;
+
+    case Severity.ignored:
+      break; // Fall-through to unhandled below.
   }
-  return unexpected("$severity", "isCompileTimeError", -1, null);
+  return unhandled("$severity", "isCompileTimeError", -1, null);
 }
 
 /// Report [message] unless [severity] is suppressed (see [isHidden]). Throws
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 446f3fbab22..da2122ca67f 100644
--- a/pkg/front_end/lib/src/fasta/fasta_codes_generated.dart
+++ b/pkg/front_end/lib/src/fasta/fasta_codes_generated.dart
@@ -1477,7 +1477,7 @@ const Code<Message Function(String name, Uri uri_, Uri uri2_)>
         "DuplicatedExport", templateDuplicatedExport,
         analyzerCode: "AMBIGUOUS_EXPORT",
         dart2jsCode: "*ignored*",
-        severity: Severity.nit);
+        severity: Severity.ignored);
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 Message _withArgumentsDuplicatedExport(String name, Uri uri_, Uri uri2_) {
@@ -1525,7 +1525,7 @@ const Code<Message Function(String name, Uri uri_, Uri uri2_)>
     codeDuplicatedImport =
     const Code<Message Function(String name, Uri uri_, Uri uri2_)>(
         "DuplicatedImport", templateDuplicatedImport,
-        severity: Severity.nit);
+        severity: Severity.ignored);
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 Message _withArgumentsDuplicatedImport(String name, Uri uri_, Uri uri2_) {
@@ -2133,7 +2133,7 @@ const Code<Message Function(String name, Uri uri_, Uri uri2_)>
     codeExportHidesExport =
     const Code<Message Function(String name, Uri uri_, Uri uri2_)>(
         "ExportHidesExport", templateExportHidesExport,
-        severity: Severity.nit);
+        severity: Severity.ignored);
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 Message _withArgumentsExportHidesExport(String name, Uri uri_, Uri uri2_) {
@@ -2433,7 +2433,6 @@ const MessageCode messageFastaUsageLong =
 
   --fatal=errors
   --fatal=warnings
-  --fatal=nits
     Makes messages of the given kinds fatal, that is, immediately stop the
     compiler with a non-zero exit-code. In --verbose mode, also display an
     internal stack trace from the compiler. Multiple kinds can be separated by
@@ -2792,7 +2791,7 @@ const Code<Message Function(String name, Uri uri_, Uri uri2_)>
     codeImportHidesImport =
     const Code<Message Function(String name, Uri uri_, Uri uri2_)>(
         "ImportHidesImport", templateImportHidesImport,
-        severity: Severity.nit);
+        severity: Severity.ignored);
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 Message _withArgumentsImportHidesImport(String name, Uri uri_, Uri uri2_) {
@@ -3815,7 +3814,7 @@ const Template<
 const Code<Message Function(Uri uri_)> codeLoadLibraryHidesMember =
     const Code<Message Function(Uri uri_)>(
         "LoadLibraryHidesMember", templateLoadLibraryHidesMember,
-        severity: Severity.nit);
+        severity: Severity.ignored);
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 Message _withArgumentsLoadLibraryHidesMember(Uri uri_) {
@@ -3850,7 +3849,7 @@ const Code<Message Function(String name, Uri uri_)>
     codeLocalDefinitionHidesExport =
     const Code<Message Function(String name, Uri uri_)>(
         "LocalDefinitionHidesExport", templateLocalDefinitionHidesExport,
-        severity: Severity.nit);
+        severity: Severity.ignored);
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 Message _withArgumentsLocalDefinitionHidesExport(String name, Uri uri_) {
@@ -3873,7 +3872,7 @@ const Code<Message Function(String name, Uri uri_)>
     codeLocalDefinitionHidesImport =
     const Code<Message Function(String name, Uri uri_)>(
         "LocalDefinitionHidesImport", templateLocalDefinitionHidesImport,
-        severity: Severity.nit);
+        severity: Severity.ignored);
 
 // DO NOT EDIT. THIS FILE IS GENERATED. SEE TOP OF FILE.
 Message _withArgumentsLocalDefinitionHidesImport(String name, Uri uri_) {
diff --git a/pkg/front_end/lib/src/fasta/loader.dart b/pkg/front_end/lib/src/fasta/loader.dart
index 1a1ab4d8ff4..0e2a25e898b 100644
--- a/pkg/front_end/lib/src/fasta/loader.dart
+++ b/pkg/front_end/lib/src/fasta/loader.dart
@@ -237,6 +237,7 @@ abstract class Loader<L> {
   bool addMessage(Message message, int charOffset, int length, Uri fileUri,
       Severity severity,
       {bool wasHandled: false, List<LocatedMessage> context}) {
+    if (severity == Severity.ignored) return false;
     String trace = """
 message: ${message.message}
 charOffset: $charOffset
diff --git a/pkg/front_end/lib/src/fasta/severity.dart b/pkg/front_end/lib/src/fasta/severity.dart
index fb1fb5a4e6e..9a29a74ccd5 100644
--- a/pkg/front_end/lib/src/fasta/severity.dart
+++ b/pkg/front_end/lib/src/fasta/severity.dart
@@ -8,8 +8,8 @@ enum Severity {
   context,
   error,
   errorLegacyWarning,
+  ignored,
   internalProblem,
-  nit,
   warning,
 }
 
@@ -17,8 +17,8 @@ const Map<String, String> severityEnumNames = const <String, String>{
   'CONTEXT': 'context',
   'ERROR': 'error',
   'ERROR_LEGACY_WARNING': 'errorLegacyWarning',
+  'IGNORED': 'ignored',
   'INTERNAL_PROBLEM': 'internalProblem',
-  'NIT': 'nit',
   'WARNING': 'warning',
 };
 
@@ -26,7 +26,7 @@ const Map<String, Severity> severityEnumValues = const <String, Severity>{
   'CONTEXT': Severity.context,
   'ERROR': Severity.error,
   'ERROR_LEGACY_WARNING': Severity.errorLegacyWarning,
+  'IGNORED': Severity.ignored,
   'INTERNAL_PROBLEM': Severity.internalProblem,
-  'NIT': Severity.nit,
   'WARNING': Severity.warning,
 };
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 7d6952a2af9..75dfd2f5088 100644
--- a/pkg/front_end/lib/src/fasta/source/source_loader.dart
+++ b/pkg/front_end/lib/src/fasta/source/source_loader.dart
@@ -80,7 +80,7 @@ import '../parser/class_member_parser.dart' show ClassMemberParser;
 
 import '../parser.dart' show Parser, lengthForToken, offsetForToken;
 
-import '../problems.dart' show internalProblem;
+import '../problems.dart' show internalProblem, unhandled;
 
 import '../scanner.dart' show ErrorToken, ScannerResult, Token, scan;
 
@@ -862,8 +862,7 @@ class SourceLoader<L> extends Loader<L> {
     if (instrumentation == null) return;
 
     if (charOffset == -1 &&
-        (severity == Severity.nit ||
-            message.code == fasta_codes.codeConstConstructorWithBody ||
+        (message.code == fasta_codes.codeConstConstructorWithBody ||
             message.code == fasta_codes.codeConstructorNotFound ||
             message.code == fasta_codes.codeSuperclassHasNoDefaultConstructor ||
             message.code == fasta_codes.codeTypeArgumentsOnTypeVariable ||
@@ -883,10 +882,6 @@ class SourceLoader<L> extends Loader<L> {
         severityString = "internal problem";
         break;
 
-      case Severity.nit:
-        severityString = "nit";
-        break;
-
       case Severity.warning:
         severityString = "warning";
         break;
@@ -900,6 +895,10 @@ class SourceLoader<L> extends Loader<L> {
       case Severity.context:
         severityString = "context";
         break;
+
+      case Severity.ignored:
+        unhandled("IGNORED", "recordMessage", charOffset, fileUri);
+        return;
     }
     instrumentation.record(
         fileUri,
diff --git a/pkg/front_end/messages.yaml b/pkg/front_end/messages.yaml
index f36d34b75ef..7c31f2a8911 100644
--- a/pkg/front_end/messages.yaml
+++ b/pkg/front_end/messages.yaml
@@ -1149,7 +1149,7 @@ LoadLibraryTakesNoArguments:
 LoadLibraryHidesMember:
   template: "The library '#uri' defines a top-level member named 'loadLibrary'. This member is hidden by the special member 'loadLibrary' that the language adds to support deferred loading."
   tip: "Try to rename or hide the member."
-  severity: NIT
+  severity: IGNORED
 
 TypeArgumentMismatch:
   template: "'#name' expects #count type arguments."
@@ -1229,7 +1229,6 @@ FastaUsageLong:
 
       --fatal=errors
       --fatal=warnings
-      --fatal=nits
         Makes messages of the given kinds fatal, that is, immediately stop the
         compiler with a non-zero exit-code. In --verbose mode, also display an
         internal stack trace from the compiler. Multiple kinds can be separated by
@@ -1343,19 +1342,19 @@ InternalVisitorUnsupportedDefault:
 
 LocalDefinitionHidesExport:
   template: "Local definition of '#name' hides export from '#uri'."
-  severity: NIT
+  severity: IGNORED
 
 LocalDefinitionHidesImport:
   template: "Local definition of '#name' hides import from '#uri'."
-  severity: NIT
+  severity: IGNORED
 
 ExportHidesExport:
   template: "Export of '#name' (from '#uri') hides export from '#uri2'."
-  severity: NIT
+  severity: IGNORED
 
 ImportHidesImport:
   template: "Import of '#name' (from '#uri') hides import from '#uri2'."
-  severity: NIT
+  severity: IGNORED
 
 MissingPrefixInDeferredImport:
   template: "Deferred imports should have a prefix."
@@ -1396,7 +1395,7 @@ PrefixAfterCombinator:
 
 DuplicatedExport:
   template: "'#name' is exported from both '#uri' and '#uri2'."
-  severity: NIT
+  severity: IGNORED
   analyzerCode: AMBIGUOUS_EXPORT
   dart2jsCode: "*ignored*"
 
@@ -1406,7 +1405,7 @@ DuplicatedExportInType:
 
 DuplicatedImport:
   template: "'#name' is imported from both '#uri' and '#uri2'."
-  severity: NIT
+  severity: IGNORED
 
 DuplicatedImportInType:
   template: "'#name' is imported from both '#uri' and '#uri2'."
diff --git a/pkg/front_end/test/fasta/incremental_test.dart b/pkg/front_end/test/fasta/incremental_test.dart
index d6e5f8dd567..3609b703764 100644
--- a/pkg/front_end/test/fasta/incremental_test.dart
+++ b/pkg/front_end/test/fasta/incremental_test.dart
@@ -220,8 +220,7 @@ Future<Context> createContext(
     ..fileSystem = fs
     ..sdkSummary = sdkSummary
     ..onError = (CompilationMessage message) {
-      if (message.severity != Severity.nit &&
-          message.severity != Severity.warning) {
+      if (message.severity != Severity.warning) {
         errors.add(message);
       }
     };
diff --git a/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.expect b/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.expect
index 09a7e0c06e9..e72d620b3fa 100644
--- a/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.expect
+++ b/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.expect
@@ -19,7 +19,7 @@ class Fisk extends core::Object {
     for (final dynamic #t3 = let dynamic _ = null in invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart:17:10: Error: Can't assign to this, so it can't be used in a for-in loop.
     for (collection in x) {
          ^^^^^^^^^^" in x) {
-      core::print(invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart: Error: A library can't be used as an expression.");
+      core::print(invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart:1: Error: A library can't be used as an expression.");
     }
     for (final dynamic #t4 in x) {
       let dynamic _ = null in throw new core::NoSuchMethodError::withInvocation(null, new core::_InvocationMirror::_withType(#VoidFunction, 34, const <core::Type>[], core::List::unmodifiable<dynamic>(<dynamic>[#t4]), core::Map::unmodifiable<core::Symbol, dynamic>(const <core::Symbol, dynamic>{})));
@@ -50,7 +50,7 @@ static method main(dynamic arguments) → dynamic {
   for (final dynamic #t8 = let dynamic _ = null in invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart:37:8: Error: Can't assign to this, so it can't be used in a for-in loop.
   for (collection in arguments) {
        ^^^^^^^^^^" in arguments) {
-    core::print(invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart: Error: A library can't be used as an expression.");
+    core::print(invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart:1: Error: A library can't be used as an expression.");
   }
   for (final dynamic #t9 in arguments) {
     let dynamic _ = null in throw new core::NoSuchMethodError::withInvocation(null, new core::_InvocationMirror::_withType(#VoidFunction, 34, const <core::Type>[], core::List::unmodifiable<dynamic>(<dynamic>[#t9]), core::Map::unmodifiable<core::Symbol, dynamic>(const <core::Symbol, dynamic>{})));
diff --git a/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.transformed.expect b/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.transformed.expect
index 09a7e0c06e9..e72d620b3fa 100644
--- a/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.transformed.expect
+++ b/pkg/front_end/testcases/rasta/unresolved_for_in.dart.direct.transformed.expect
@@ -19,7 +19,7 @@ class Fisk extends core::Object {
     for (final dynamic #t3 = let dynamic _ = null in invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart:17:10: Error: Can't assign to this, so it can't be used in a for-in loop.
     for (collection in x) {
          ^^^^^^^^^^" in x) {
-      core::print(invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart: Error: A library can't be used as an expression.");
+      core::print(invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart:1: Error: A library can't be used as an expression.");
     }
     for (final dynamic #t4 in x) {
       let dynamic _ = null in throw new core::NoSuchMethodError::withInvocation(null, new core::_InvocationMirror::_withType(#VoidFunction, 34, const <core::Type>[], core::List::unmodifiable<dynamic>(<dynamic>[#t4]), core::Map::unmodifiable<core::Symbol, dynamic>(const <core::Symbol, dynamic>{})));
@@ -50,7 +50,7 @@ static method main(dynamic arguments) → dynamic {
   for (final dynamic #t8 = let dynamic _ = null in invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart:37:8: Error: Can't assign to this, so it can't be used in a for-in loop.
   for (collection in arguments) {
        ^^^^^^^^^^" in arguments) {
-    core::print(invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart: Error: A library can't be used as an expression.");
+    core::print(invalid-expression "pkg/front_end/testcases/rasta/unresolved_for_in.dart:1: Error: A library can't be used as an expression.");
   }
   for (final dynamic #t9 in arguments) {
     let dynamic _ = null in throw new core::NoSuchMethodError::withInvocation(null, new core::_InvocationMirror::_withType(#VoidFunction, 34, const <core::Type>[], core::List::unmodifiable<dynamic>(<dynamic>[#t9]), core::Map::unmodifiable<core::Symbol, dynamic>(const <core::Symbol, dynamic>{})));
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 bdc26f14a47..70737605eeb 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
@@ -2,5 +2,5 @@ library;
 import self as self;
 
 static method #main() → dynamic {
-  throw "dart:html: Error: Not found: dart:html.";
+  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 bdc26f14a47..70737605eeb 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
@@ -2,5 +2,5 @@ library;
 import self as self;
 
 static method #main() → dynamic {
-  throw "dart:html: Error: Not found: dart:html.";
+  throw "dart:html:1: Error: Not found: dart:html.";
 }
diff --git a/pkg/front_end/testcases/regress/issue_31190.dart.strong.expect b/pkg/front_end/testcases/regress/issue_31190.dart.strong.expect
index 938769074b7..9fbedf891d5 100644
--- a/pkg/front_end/testcases/regress/issue_31190.dart.strong.expect
+++ b/pkg/front_end/testcases/regress/issue_31190.dart.strong.expect
@@ -8,7 +8,7 @@ class Typed<T extends core::Object = dynamic> extends core::Object {
     : super core::Object::•()
     ;
 }
-static const field dynamic #errors = const <dynamic>["pkg/front_end/testcases/regress/issue_31190.dart: Error: Can't use type arguments with type variable 'T'.
+static const field dynamic #errors = const <dynamic>["pkg/front_end/testcases/regress/issue_31190.dart:1: Error: Can't use type arguments with type variable 'T'.
 Try removing the type arguments.", "pkg/front_end/testcases/regress/issue_31190.dart:6:5: Error: 'U' isn't a type.
   T<U> v;
     ^", "pkg/front_end/testcases/regress/issue_31190.dart:6:3: Error: 'T' expects 0 type arguments.
diff --git a/pkg/front_end/testcases/regress/issue_31190.dart.strong.transformed.expect b/pkg/front_end/testcases/regress/issue_31190.dart.strong.transformed.expect
index 938769074b7..9fbedf891d5 100644
--- a/pkg/front_end/testcases/regress/issue_31190.dart.strong.transformed.expect
+++ b/pkg/front_end/testcases/regress/issue_31190.dart.strong.transformed.expect
@@ -8,7 +8,7 @@ class Typed<T extends core::Object = dynamic> extends core::Object {
     : super core::Object::•()
     ;
 }
-static const field dynamic #errors = const <dynamic>["pkg/front_end/testcases/regress/issue_31190.dart: Error: Can't use type arguments with type variable 'T'.
+static const field dynamic #errors = const <dynamic>["pkg/front_end/testcases/regress/issue_31190.dart:1: Error: Can't use type arguments with type variable 'T'.
 Try removing the type arguments.", "pkg/front_end/testcases/regress/issue_31190.dart:6:5: Error: 'U' isn't a type.
   T<U> v;
     ^", "pkg/front_end/testcases/regress/issue_31190.dart:6:3: Error: 'T' expects 0 type arguments.
diff --git a/pkg/front_end/tool/_fasta/command_line.dart b/pkg/front_end/tool/_fasta/command_line.dart
index b34bcdf8159..daceb3cde59 100644
--- a/pkg/front_end/tool/_fasta/command_line.dart
+++ b/pkg/front_end/tool/_fasta/command_line.dart
@@ -277,8 +277,6 @@ ProcessedOptions analyzeCommandLine(
 
   final bool warningsAreFatal = fatal.contains("warnings");
 
-  final bool nitsAreFatal = fatal.contains("nits");
-
   final bool compileSdk = options.containsKey("--compile-sdk");
 
   if (programName == "compile_platform") {
@@ -305,7 +303,6 @@ ProcessedOptions analyzeCommandLine(
           ..target = target
           ..throwOnErrorsForDebugging = errorsAreFatal
           ..throwOnWarningsForDebugging = warningsAreFatal
-          ..throwOnNitsForDebugging = nitsAreFatal
           ..embedSourceText = !excludeSource
           ..debugDump = dumpIr
           ..verbose = verbose
@@ -336,7 +333,6 @@ ProcessedOptions analyzeCommandLine(
     ..target = target
     ..throwOnErrorsForDebugging = errorsAreFatal
     ..throwOnWarningsForDebugging = warningsAreFatal
-    ..throwOnNitsForDebugging = nitsAreFatal
     ..embedSourceText = !excludeSource
     ..debugDump = dumpIr
     ..verbose = verbose
diff --git a/pkg/vm/bin/kernel_service.dart b/pkg/vm/bin/kernel_service.dart
index 20ed01ceff7..eedfdee3ce7 100644
--- a/pkg/vm/bin/kernel_service.dart
+++ b/pkg/vm/bin/kernel_service.dart
@@ -109,14 +109,12 @@ abstract class Compiler {
             printMessage = false; // errors are printed by VM
             errors.add(message.formatted);
             break;
-          case Severity.nit:
-            printMessage = false;
-            break;
           case Severity.warning:
             printMessage = !suppressWarnings;
             break;
           case Severity.errorLegacyWarning:
           case Severity.context:
+          case Severity.ignored:
             throw "Unexpected severity: $severity";
         }
         if (printMessage) {
diff --git a/pkg/vm/lib/frontend_server.dart b/pkg/vm/lib/frontend_server.dart
index dba6fbf07ca..e484146c767 100644
--- a/pkg/vm/lib/frontend_server.dart
+++ b/pkg/vm/lib/frontend_server.dart
@@ -263,14 +263,12 @@ class FrontendCompiler implements CompilerInterface {
             printMessage = true;
             errors.add(message.formatted);
             break;
-          case Severity.nit:
-            printMessage = false;
-            break;
           case Severity.warning:
             printMessage = true;
             break;
           case Severity.errorLegacyWarning:
           case Severity.context:
+          case Severity.ignored:
             throw 'Unexpected severity: $severity';
         }
         if (printMessage) {
diff --git a/utils/bazel/kernel_summary_worker.dart b/utils/bazel/kernel_summary_worker.dart
index 2b1246b5ecd..9ac2ab97376 100644
--- a/utils/bazel/kernel_summary_worker.dart
+++ b/utils/bazel/kernel_summary_worker.dart
@@ -138,9 +138,7 @@ Future<bool> computeSummary(List<String> args,
     for (fe.FormattedMessage message in context) {
       out.println(message.formatted);
     }
-    if (severity != fe.Severity.nit) {
-      succeeded = false;
-    }
+    succeeded = false;
   }
 
   var summary = await fe.compile(state, sources, onProblem);