--- a/tests/test-exchange-A5.t	Thu Aug 14 15:30:04 2014 -0700
+++ b/tests/test-exchange-A5.t	Fri Aug 15 16:54:32 2014 -0700
@@ -66,9 +66,9 @@
   o  a9bdc8b26820 (public): O
   
   $ hg debugobsolete
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 {'date': '', 'user': 'test'}
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '', 'user': 'test'}
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 {'date': '', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 {'date': '0 0', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '0 0', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 {'date': '0 0', 'user': 'test'}
   $ cd ..
   $ cd ..
 
@@ -80,9 +80,9 @@
   # testing echange of "B1" (f6298a8ac3a4)
   ## initial state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 {'date': '', 'user': 'test'}
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '', 'user': 'test'}
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 {'date': '0 0', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '0 0', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
   # obstore: pulldest
   ## pushing "B1" from main to pushdest
@@ -94,15 +94,15 @@
   added 1 changesets with 1 changes to 1 files
   OBSEXC: computing relevant nodes
   OBSEXC: computing markers relevant to 2 nodes
-  OBSEXC: pushing 1 obsolescence markers (62 bytes)
+  OBSEXC: pushing 1 obsolescence markers (65 bytes)
   OBSEXC: DONE
   ## post push state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 {'date': '', 'user': 'test'}
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '', 'user': 'test'}
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 {'date': '0 0', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '0 0', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
   ## pulling "f6298a8ac3a4" from main into pulldest
   pulling from main
@@ -112,16 +112,16 @@
   adding file changes
   added 1 changesets with 1 changes to 1 files
   OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (62 bytes)
+  OBSEXC: merging obsolescence markers (65 bytes)
   OBSEXC: 1 obsolescence markers added
   OBSEXC: DONE
   (run 'hg update' to get a working copy)
   ## post pull state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 {'date': '', 'user': 'test'}
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '', 'user': 'test'}
-  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f 8c0a98c8372212c6efde4bfdcef006f27ff759d3 0 {'date': '0 0', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '0 0', 'user': 'test'}
+  aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa 28b51eb45704506b5c603decd6bf7ac5e0f6a52f 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
-  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '', 'user': 'test'}
+  6e72f0a95b5e01a7504743aa941f69cb1fbef8b0 f6298a8ac3a4b78bbeae5f1d3dc5bc3c3812f0f3 0 {'date': '0 0', 'user': 'test'}