Use 'hg ci -d "1000000 0"' in tests to circumvent problem with leading zero. Some systems show "Thu Jan 01" instead of "Thu Jan 1", which breaks tests. Using "1000000" yields "Mon Jan 12 13:46:40 1970", which looks the same on all systems.

--- a/tests/test-encode
+++ b/tests/test-encode
@@ -13,7 +13,7 @@ EOF
 
 echo "this is a test" | gzip > a.gz
 hg add a.gz
-hg ci -m "test" -d "0 0"
+hg ci -m "test" -d "1000000 0"
 echo %% no changes
 hg status
 touch a.gz