Race detected in x/mongo/driver/topology

WARNING: DATA RACE

Read at 0x00c0000eea50 by goroutine 90:

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology.(*pool).get()

      /Users/david/golang/src/github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/pool.go:164 +0x26f

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology.(*Server).Connection()

      /Users/david/golang/src/github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/server.go:206 +0x110

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology.(*SelectedServer).Connection()

      <autogenerated>:1 +0x78

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver.Operation.Execute()

      /Users/david/golang/src/github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation.go:232 +0x218

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation.(*Insert).Execute()

      /Users/david/golang/src/github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation/insert.go:105 +0x4b4

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/mongo.(*Collection).insert()

      /Users/david/golang/src/github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/mongo/collection.go:287 +0xa0f

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/mongo.(*Collection).InsertOne()

      /Users/david/golang/src/github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/mongo/collection.go:302 +0x39c

  github.com/10gen/mongomirror/mongomirror.sourceFailoverTestCase.func1()

      /Users/david/golang/src/github.com/10gen/mongomirror/mongomirror/mongomirror_internal_test.go:5374 +0x35b

Previous write at 0x00c0000eea50 by goroutine 55:

  sync/atomic.AddInt64()

      /usr/local/go/src/runtime/race_amd64.s:276 +0xb

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology.(*Server).ProcessError()

      /Users/david/golang/src/github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology/pool.go:75 +0xbe9

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/topology.(*SelectedServer).ProcessError()

      <autogenerated>:1 +0x6d

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver.Operation.Execute()

      /Users/david/golang/src/github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation.go:332 +0x2d7b

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation.(*Command).Execute()

      /Users/david/golang/src/github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/x/mongo/driver/operation/command.go:73 +0x2eb

  github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/mongo.(*Database).RunCommand()

      /Users/david/golang/src/github.com/10gen/mongomirror/vendor/go.mongodb.org/mongo-driver/mongo/database.go:171 +0x23f

  github.com/10gen/mongomirror/mongomirror.sourceFailoverTestCase()

      /Users/david/golang/src/github.com/10gen/mongomirror/mongomirror/mongomirror_internal_test.go:5421 +0x828

  github.com/10gen/mongomirror/mongomirror.TestSourceFailoverApplyingOplog()

      /Users/david/golang/src/github.com/10gen/mongomirror/mongomirror/mongomirror_internal_test.go:5543 +0x575

  testing.tRunner()

      /usr/local/go/src/testing/testing.go:865 +0x163