Skip date-based processing if Dates is missing.

britney.py

@@ -721,13 +721,18 @@ class Britney(object):
         dates = {}
         filename = os.path.join(basedir, "Dates")
         self.__log("Loading upload data from %s" % filename)
-        for line in open(filename):
-            l = line.split()
-            if len(l) != 3: continue
-            try:
-                dates[l[0]] = (l[1], int(l[2]))
-            except ValueError:
-                self.__log("Dates, unable to parse \"%s\"" % line, type="E")
+        try:
+            for line in open(filename):
+                l = line.split()
+                if len(l) != 3: continue
+                try:
+                    dates[l[0]] = (l[1], int(l[2]))
+                except ValueError:
+                    self.__log("Dates, unable to parse \"%s\"" % line,
+                               type="E")
+        except IOError:
+            self.__log("%s missing; skipping date-based processing" % filename)
+            return None
         return dates
 
     def write_dates(self, basedir, dates):
@@ -1327,7 +1332,7 @@ class Britney(object):
         # permanence in unstable before updating testing; if the source package is too young,
         # the check fails and we set update_candidate to False to block the update; consider
         # the age-days hint, if specified for the package
-        if suite == 'unstable':
+        if suite == 'unstable' and self.dates is not None:
             if src not in self.dates:
                 self.dates[src] = (source_u[VERSION], self.date_now)
             elif not self.same_source(self.dates[src][0], source_u[VERSION]):
@@ -1423,7 +1428,7 @@ class Britney(object):
                 else:
                     update_candidate = False
 
-                if self.date_now != self.dates[src][1]:
+                if self.dates is None or self.date_now != self.dates[src][1]:
                     excuse.addhtml(text)
 
         # if the source package has no binaries, set update_candidate to False to block the update
@@ -2449,7 +2454,8 @@ class Britney(object):
                 self.write_controlfiles(self.options.testing, 'testing')
 
             # write dates
-            self.write_dates(self.options.testing, self.dates)
+            if self.dates is not None:
+                self.write_dates(self.options.testing, self.dates)
 
             # write HeidiResult
             self.write_heidi(self.options.heidi_output)