diff --git a/pkg/cmd/roachtest/github.go b/pkg/cmd/roachtest/github.go
index f520ff85573c..9d15c03200c6 100644
--- a/pkg/cmd/roachtest/github.go
+++ b/pkg/cmd/roachtest/github.go
@@ -111,7 +111,8 @@ func (g *githubIssues) createPostRequest(
 	var mention []string
 	var projColID int
 
-	issueOwner := t.Spec().(*registry.TestSpec).Owner
+	spec := t.Spec().(*registry.TestSpec)
+	issueOwner := spec.Owner
 	issueName := t.Name()
 
 	messagePrefix := ""
@@ -129,7 +130,6 @@ func (g *githubIssues) createPostRequest(
 	// Issues posted from roachtest are identifiable as such and
 	// they are also release blockers (this label may be removed
 	// by a human upon closer investigation).
-	spec := t.Spec().(*registry.TestSpec)
 	labels := []string{"O-roachtest"}
 	if !spec.NonReleaseBlocker {
 		labels = append(labels, "release-blocker")
@@ -174,12 +174,16 @@ func (g *githubIssues) createPostRequest(
 		clusterParams[roachtestPrefix("encrypted")] = fmt.Sprintf("%v", g.cluster.encAtRest)
 	}
 
+	issueMessage := messagePrefix + message
+	if spec.RedactResults {
+		issueMessage = "The details about this test failure have been omitted; consult the log for more details"
+	}
 	return issues.PostRequest{
 		MentionOnCreate: mention,
 		ProjectColumnID: projColID,
 		PackageName:     "roachtest",
 		TestName:        issueName,
-		Message:         messagePrefix + message,
+		Message:         issueMessage,
 		Artifacts:       artifacts,
 		ExtraLabels:     labels,
 		ExtraParams:     clusterParams,
diff --git a/pkg/cmd/roachtest/registry/test_spec.go b/pkg/cmd/roachtest/registry/test_spec.go
index fca4bb74e6e9..e5a3533bd3c2 100644
--- a/pkg/cmd/roachtest/registry/test_spec.go
+++ b/pkg/cmd/roachtest/registry/test_spec.go
@@ -92,6 +92,10 @@ type TestSpec struct {
 
 	// Run is the test function.
 	Run func(ctx context.Context, t test.Test, c cluster.Cluster)
+
+	// True iff results from this test should not be published externally,
+	// e.g. to GitHub.
+	RedactResults bool
 }
 
 // PostValidation is a type of post-validation that runs after a test completes.