Crash, clump-hopper-test.py segfault.
I am attaching three reproduced debug backtraces. I reproduced this bug with latest master: b4fe2faa2
[crash_hopper_1.txt](/uploads/e940e422d5b267be6bcc4b5ea03b3b5c/crash_hopper_1.txt)
[crash_hopper_2.txt](/uploads/c0bc0c888c27fbd7a0cd4e6fd03a1635/crash_hopper_2.txt)
[crash_hopper_3.txt](/uploads/c19eaa8139824cb33c6fa509279d909a/crash_hopper_3.txt)
issue