diff -r 2e30d7df4809 -r aef7b043a36f tests/test-doctest.py
--- a/tests/test-doctest.py	Mon Nov 25 11:53:50 2019 -0800
+++ b/tests/test-doctest.py	Mon Nov 25 12:33:06 2019 -0800
@@ -82,6 +82,7 @@
 testmod('mercurial.url')
 testmod('mercurial.util')
 testmod('mercurial.util', testtarget='platform')
+testmod('mercurial.utils.dateutil')
 testmod('mercurial.utils.stringutil')
 testmod('hgext.convert.convcmd')
 testmod('hgext.convert.cvsps')