Index: .travis.yml
===================================================================
diff -u -raef46edcb3f336d6020c70f2dd343c8206d22eab -rbf3b3810c283d848435e2c8a036965179c29ea5f
--- .travis.yml	(.../.travis.yml)	(revision aef46edcb3f336d6020c70f2dd343c8206d22eab)
+++ .travis.yml	(.../.travis.yml)	(revision bf3b3810c283d848435e2c8a036965179c29ea5f)
@@ -39,6 +39,7 @@
 - if [ ! -f ${KITS}/tclkit.$TRAVIS_OS_NAME ]; then wget -O ${KITS}/tclkit.$TRAVIS_OS_NAME
   $URL && chmod +x ${KITS}/tclkit.$TRAVIS_OS_NAME; fi
 script:
+- python3 -c 'import os,sys; os.set_blocking(sys.stdout.fileno(), True)'
 - "$KITS/tclkit.$TRAVIS_OS_NAME apps/build.tcl $HOME $TRAVIS_BUILD_DIR $TCLTAG"
 
 after_success: