message: log durability
diff: @@ -76,6 +76,14 @@ where
  value: Q::Value,
  durability: Durability,
  ) {
  + log::debug!(
  + "{:?}({:?}) = {:?} ({:?})",
  + Q::default(),
  + key,
  + value,
  + durability
  + );
  +
  // The value is changing, so even if we are setting this to a
  // constant, we still need a new revision.
  //
  @@ -182,8 +190,6 @@ where
  DB: Database,
  {
  fn set(&self, db: &DB, key: &Q::Key, database_key: &DB::DatabaseKey, value: Q::Value) {
  - log::debug!("{:?}({:?}) = {:?}", Q::default(), key, value);
  -
  self.set_common(db, key, database_key, value, Durability::LOW);
  }
  @@ -195,8 +201,6 @@ where
  value: Q::Value,
  durability: Durability,
  ) {
  - log::debug!("{:?}({:?}) = {:?}", Q::default(), key, value);
  -
  self.set_common(db, key, database_key, value, durability);
  }
  }
  