fix git version fetching

.dockerignore

@@ -1,4 +1,4 @@
-.git
+# .git
 .cache
 static
 hoover/search/static

.drone.yml

@@ -15,7 +15,15 @@ name: build
 depends_on:
 - static-tests
 
+clone:
+  depth: 5000
+
 steps:
+- name: fetch
+  image: alpine/git
+  commands:
+  - git fetch --tags
+
 # - name: GH CR docker push branch
 #   image: plugins/docker
 #   settings:

hoover/search/tracing.py

@@ -76,9 +76,17 @@ def span(self, *args, **kwds):
         finally:
             if we_are_first:
                 log.debug('destroying tracer for module %s...', self.name)
-                trace.get_tracer_provider().force_flush()
-                trace.get_tracer_provider().shutdown()
-                local.tracer = None
+                try:
+                    trace.get_tracer_provider().force_flush()
+                    trace.get_tracer_provider().shutdown()
+                # the ProxyTracerProvider we get when no tracing is configured
+                # doesn't have these methods.
+                except AttributeError:
+                    pass
+                except Exception as e:
+                    log.warning('tracer shutdown exception: ' + str(e))
+                finally:
+                    local.tracer = None
 
     def wrap_function(self):
         """Returns a function wrapper that has a telemetry span around the function.