#
#
# patch "tracvc/mtn/backend.py"
#  from [701b96d3eafa85ca1b48d6680eb5b0c967cc74de]
#    to [7a16784ea1d5f64d834e3e4d58d9c50bfc36d252]
#
============================================================
--- tracvc/mtn/backend.py	701b96d3eafa85ca1b48d6680eb5b0c967cc74de
+++ tracvc/mtn/backend.py	7a16784ea1d5f64d834e3e4d58d9c50bfc36d252
@@ -208,7 +208,10 @@ class MonotoneRepository(Repository):
         revision 'rev'.
         """
         rev = self.normalize_rev(rev)
-        return MonotoneChangeset(self.mtn, rev, self.revpropspec)
+        try:
+            return MonotoneChangeset(self.mtn, rev, self.revpropspec)
+        except AutomateException:
+            raise NoSuchChangeset(rev)
 
     def get_changesets(self, start, stop):
         """
@@ -239,7 +242,10 @@ class MonotoneRepository(Repository):
         # hierarchies, so it makes no sense to ask for the latest
         # version of a path.
         rev = self.normalize_rev(rev) or self.get_youngest_rev()
-        return MonotoneNode(self.mtn, rev, path)
+        try:
+            return MonotoneNode(self.mtn, rev, path)
+        except AutomateException:
+            raise NoSuchChangeset(rev)
 
     def sync(self, feedback=None):
         """Perform a sync of the repository cache, if relevant.
@@ -410,10 +416,7 @@ class MonotoneNode(Node):
     
     def __init__(self, mtn, rev, path, manifest = None):
         self.mtn = mtn
-        try:
-            self.manifest = manifest or self.mtn.manifest(rev)
-        except AutomateException:
-            raise NoSuchChangeset(rev)
+        self.manifest = manifest or self.mtn.manifest(rev)
 
         if not path in self.manifest:
             raise NoSuchNode(path, rev)