Merge branch 'pr1599_squashed'

diff --cc scripts/maint/practracker/test_practracker.sh
index 207a5ceded9a6ee5e3d34c644d3e38f5f03b04ed,d2b79510314559020833ade857478f86e21d8d55..afc267a00041e92957a58cf20317936238b63aa6
--- 1/scripts/maint/practracker/test_practracker.sh
--- 2/scripts/maint/practracker/test_practracker.sh
+++ b/scripts/maint/practracker/test_practracker.sh
@@@ -1,7 -1,9 +1,10 @@@
  #!/bin/sh
  
+ # Fail if any subprocess fails unexpectedly
+ set -e
+ 
  umask 077
 +unset TOR_DISABLE_PRACTRACKER
  
  TMPDIR=""
  clean () {