> crystal spec
Error in line 1: while requiring "./spec/bulk_operation_spec.cr"
in spec/bulk_operation_spec.cr:1: while requiring "../src/mongo"
require "../src/mongo"
^
in src/mongo.cr:2: while requiring "./bson"
require "./bson"
^
in src/bson.cr:3: while requiring "./bson/*"
require "./bson/*"
^
in src/bson/value.cr:14: structs can't have finalizers because they are not tracked by the GC
def finalize
^~~~~~~~
From https://github.com/crystal-lang/crystal/blob/master/CHANGELOG.md#0204-06-01-2017
Because of memory leaks, see https://github.com/crystal-lang/crystal/issues/3840