Suppress flags messages [ci skip]

.travis.yml

@@ -497,10 +497,10 @@ before_script:
   - echo "raise 'do not load ~/.irbrc in test'" > ~/.irbrc
 
 script:
-  - $SETARCH make -s test TESTOPTS="${TESTOPTS=$JOBS -q --tty=no}"
+  - $SETARCH make -s test -o showflags TESTOPTS="${TESTOPTS=$JOBS -q --tty=no}"
   - $SETARCH make -s test-all -o exts TESTOPTS="${TEST_ALL_OPTS=$TESTOPTS}" RUBYOPT="-w"
   - $SETARCH make -s test-spec MSPECOPT=-ff # not using `-j` because sometimes `mspec -j` silently dies
-  - $SETARCH make -s leaked-globals
+  - $SETARCH make -s -o showflags leaked-globals
 
 # Branch matrix.  Not all branches are Travis-ready so we limit branches here.
 branches: