travis-ci: use 'set -x' for the commands under 'su' in the 32 bit Linux build

diff --git a/ci/run-linux32-build.sh b/ci/run-linux32-build.sh
index c19c50c1c9a57c14c07ffe4f5a061bb764e51aeb..5a36a8d7c05721f8b6082be28f9b09f4109153a4 100755 (executable)
--- a/ci/run-linux32-build.sh
+++ b/ci/run-linux32-build.sh
@@ -26,6 +26,7 @@ test -z $HOST_UID || (CI_USER="ci" && useradd -u $HOST_UID $CI_USER) &&
 
 # Build and test
 linux32 --32bit i386 su -m -l $CI_USER -c '
+    set -x &&
     cd /usr/src/git &&
     ln -s /tmp/travis-cache/.prove t/.prove &&
     make --jobs=2 &&