add -x to print commands executed by bash in build.sh for clean-base...

add -x to print commands executed by bash in build.sh for clean-base windows-x86 to find out why the script often fails
1 job for add_-x_to_clean-base_windows-x86_build.sh in 3 minutes and 22 seconds
Status Job ID Name Coverage
  Test
passed #100679
test

00:03:22