Revert "Fix crash caused by concurrent ObjectSpace.dump_all calls"
This reverts commit 9a62fd3cbae2ebb60e2f9cad782af1ad18db4319.
Revert "Fix crash caused by concurrent ObjectSpace.dump_all calls"
This reverts commit 9a62fd3cbae2ebb60e2f9cad782af1ad18db4319.