Merge "RBE is only supported when the host is linux, so don't try on others." into main am: c870a75fe1

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/3143223

Change-Id: Ie6441d8d460c10fd1580e5ae523bb792af9ddcc9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>
diff --git a/ui/build/config.go b/ui/build/config.go
index 8dddea5..c4a6797 100644
--- a/ui/build/config.go
+++ b/ui/build/config.go
@@ -1246,6 +1246,11 @@
 }
 
 func (c *configImpl) canSupportRBE() bool {
+	// Only supported on linux
+	if runtime.GOOS != "linux" {
+		return false
+	}
+
 	// Do not use RBE with prod credentials in scenarios when stubby doesn't exist, since
 	// its unlikely that we will be able to obtain necessary creds without stubby.
 	authType, _ := c.rbeAuth()