add getCid trace statement, fix compilation (even if I don't understand what broke)

codex/stores/repostore.nim

@@ -203,6 +203,9 @@ method getBlock*(self: RepoStore, treeCid: Cid, index: Natural): Future[?!Block]
   without cid =? await self.getCid(treeCid, index), err:
     return failure(err)
 
+  trace "Mapped tree cid and index into block cid", treeCid=treeCid,
+    index=index, cid=cid
+
   await self.getBlock(cid)
 
 method getBlock*(self: RepoStore, address: BlockAddress): Future[?!Block] =

tests/codex/utils/asyncprofiler/testmetricscollector.nim

@@ -5,7 +5,6 @@ import pkg/chronos/profiler
 import pkg/metrics
 
 import codex/utils/asyncprofiler/metricscollector
-import ../../helpers
 
 suite "asyncprofiler metrics collector":
 

tests/codex/utils/asyncprofiler/testserialization.nim

@@ -7,9 +7,7 @@ import chronos/profiler
 
 import codex/utils/asyncprofiler/serialization
 
-import ../../helpers
-
-checksuite "asyncprofiler metrics serializer":
+suite "asyncprofiler metrics serializer":
 
   let fooLoc = SrcLoc(
     procedure: "foo",