diff --git a/js/grunt/tasks/compare-phet-io-api.ts b/js/grunt/tasks/compare-phet-io-api.ts
index f30e0d62..eab21c19 100644
--- a/js/grunt/tasks/compare-phet-io-api.ts
+++ b/js/grunt/tasks/compare-phet-io-api.ts
@@ -62,7 +62,7 @@ const needsTranspile = isOptionKeyProvided( 'transpile' ) ? getOption( 'transpil
   }
   const ok = await phetioCompareAPISets( sims, proposedAPIs, options );
   if ( !ok ) {
-    console.error( 'PhET-iO API comparison failed' );
+    console.log( 'PhET-iO API comparison failed' );
     process.exit( 1 );
   }
 
diff --git a/js/grunt/tasks/lint-all.ts b/js/grunt/tasks/lint-all.ts
index 39dc8b49..77bc8e69 100644
--- a/js/grunt/tasks/lint-all.ts
+++ b/js/grunt/tasks/lint-all.ts
@@ -26,7 +26,7 @@ export const lintAllPromise = ( async () => {
 
   // Output results on errors.
   if ( !lintSuccess ) {
-    console.error( 'Lint failed' );
+    console.log( 'Lint failed' );
     process.exit( 1 );
   }
   else {
diff --git a/js/phet-io/phetioCompareAPISets.ts b/js/phet-io/phetioCompareAPISets.ts
index 2859ffed..54a7da31 100644
--- a/js/phet-io/phetioCompareAPISets.ts
+++ b/js/phet-io/phetioCompareAPISets.ts
@@ -50,16 +50,16 @@ export default async ( repos: string[], proposedAPIs: PhetioAPIs, providedOption
 
     if ( comparisonData.breakingProblems.length ) {
       ok = false;
-      console.error( `${repo} BREAKING PROBLEMS` );
-      console.error( comparisonData.breakingProblems.join( '\n' ) );
-      console.error( '\n' );
+      console.log( `${repo} BREAKING PROBLEMS` );
+      console.log( comparisonData.breakingProblems.join( '\n' ) );
+      console.log( '\n' );
     }
 
     if ( comparisonData.designedProblems.length ) {
       ok = false;
-      console.error( `${repo} DESIGN PROBLEMS` );
-      console.error( comparisonData.designedProblems.join( '\n' ) );
-      console.error( '\n' );
+      console.log( `${repo} DESIGN PROBLEMS` );
+      console.log( comparisonData.designedProblems.join( '\n' ) );
+      console.log( '\n' );
     }
 
     if ( options.delta ) {