undo taint test changes

internal/command/meta_backend_migrate.go

@@ -434,7 +434,6 @@ func (m *Meta) backendMigrateState_s_s(opts *backendMigrateOpts) error {
 	// includes preserving any lineage/serial information where possible, if
 	// both managers support such metadata.
 	log.Print("[TRACE] backendMigrateState: migration confirmed, so migrating")
-
 	if err := statemgr.Migrate(destinationState, sourceState); err != nil {
 		return fmt.Errorf(strings.TrimSpace(errBackendStateCopy),
 			opts.SourceType, opts.DestinationType, err)

internal/command/taint_test.go

@@ -1,8 +1,8 @@
 package command
 
 import (
+	"github.com/google/go-cmp/cmp"
 	"os"
-	"regexp"
 	"strings"
 	"testing"
 
@@ -381,13 +381,8 @@ Resource instance test_instance.bar was not found, but this is not an error
 because -allow-missing was set.
 
 `)
-	re, err := regexp.Compile(expected)
-	if err != nil {
-		t.Fatalf("Error compiling regexp: %s", err)
-	}
-
-	if !re.MatchString(actual) {
-		t.Fatalf("wrong output\n expected: %s \n actual: %s", expected, actual)
+	if diff := cmp.Diff(expected, actual); diff != "" {
+		t.Fatalf("wrong output\n%s", diff)
 	}
 }