travis: turn off -follow for now to reduce spam in the happy case.

.travis.yml

@@ -66,7 +66,8 @@ env:
     - VT_GO_PARALLEL=4
     - PHP_FLAGS="-d extension=$HOME/php/mongo.so"
     - PATH="$HOME/php:$PATH"
-    - TEST_FLAGS="-docker=false -timeout 5m -follow -remote-stats http://enisoc.com:15123/travis/stats"
+    # Add -follow to TEST_FLAGS below to print as the test runs, to diagnose stuck tests.
+    - TEST_FLAGS="-docker=false -timeout=5m -print-log -remote-stats=http://enisoc.com:15123/travis/stats"
   matrix:
     # NOTE: Travis CI schedules up to 5 tests simultaneously.
     #       All our tests should be spread out as evenly as possible across these 5 slots.

test.go

@@ -345,7 +345,7 @@ func main() {
 
 				// Save/print test output.
 				if err != nil || *logPass {
-					if *printLog {
+					if *printLog && !*follow {
 						test.logf("%s\n", output)
 					}
 					outFile := fmt.Sprintf("%v-%v.%v.log", test.name, test.runIndex+1, try)