cmd/go/internal/renameio: skip test affected by kernel bug on macOS 10.14 builders

The test will remain flaky on the -nocgo builder until #37695 is addressed.

Updates #37695
Fixes #33041

Change-Id: I5d661ef39e82ab1dce3a76e0e4059cf556135e89
Reviewed-on: https://go-review.googlesource.com/c/go/+/222158
Run-TryBot: Bryan C. Mills <[email protected]>
TryBot-Result: Gobot Gobot <[email protected]>
Reviewed-by: Jay Conrod <[email protected]>

Author: Bryan C. Mills

src/cmd/go/internal/renameio/renameio_test.go

@@ -9,11 +9,13 @@ package renameio
 import (
 	"encoding/binary"
 	"errors"
+	"internal/testenv"
 	"io/ioutil"
 	"math/rand"
 	"os"
 	"path/filepath"
 	"runtime"
+	"strings"
 	"sync"
 	"sync/atomic"
 	"syscall"
@@ -24,6 +26,10 @@ import (
 )
 
 func TestConcurrentReadsAndWrites(t *testing.T) {
+	if runtime.GOOS == "darwin" && strings.HasSuffix(testenv.Builder(), "-10_14") {
+		testenv.SkipFlaky(t, 33041)
+	}
+
 	dir, err := ioutil.TempDir("", "renameio")
 	if err != nil {
 		t.Fatal(err)