diff -r 168dfc839eca -r f6e0cfca1bf0 tests/test-exchange-A6.t
--- a/tests/test-exchange-A6.t	Thu Aug 14 15:30:04 2014 -0700
+++ b/tests/test-exchange-A6.t	Fri Aug 15 16:54:32 2014 -0700
@@ -58,7 +58,7 @@
   o  a9bdc8b26820 (public): O
   
   $ hg debugobsolete
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   $ cd ..
   $ cd ..
 
@@ -73,7 +73,7 @@
   # testing echange of "A1" (e5ea8f9c7314)
   ## initial state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
   # obstore: pulldest
   ## pushing "A1" from main to pushdest
@@ -82,28 +82,28 @@
   no changes found
   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 e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
   ## pulling "e5ea8f9c7314" from main into pulldest
   pulling from main
   no changes found
   OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (62 bytes)
+  OBSEXC: merging obsolescence markers (65 bytes)
   OBSEXC: 1 obsolescence markers added
   OBSEXC: DONE
   ## post pull state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
 
 Actual Test (bare push version)
 -------------------------------
@@ -112,7 +112,7 @@
   ## Running testcase A.6.b
   ## initial state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
   # obstore: pulldest
   ## pushing from main to pushdest
@@ -121,26 +121,26 @@
   no changes found
   OBSEXC: computing relevant nodes
   OBSEXC: computing markers relevant to 3 nodes
-  OBSEXC: pushing 1 obsolescence markers (62 bytes)
+  OBSEXC: pushing 1 obsolescence markers (65 bytes)
   OBSEXC: DONE
   ## post push state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
   ## pulling from main into pulldest
   pulling from main
   searching for changes
   no changes found
   OBSEXC: pull obsolescence markers
-  OBSEXC: merging obsolescence markers (62 bytes)
+  OBSEXC: merging obsolescence markers (65 bytes)
   OBSEXC: 1 obsolescence markers added
   OBSEXC: DONE
   ## post pull state
   # obstore: main
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pushdest
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}
   # obstore: pulldest
-  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '', 'user': 'test'}
+  28b51eb45704506b5c603decd6bf7ac5e0f6a52f e5ea8f9c73143125d36658e90ef70c6d2027a5b7 0 {'date': '0 0', 'user': 'test'}