Yosys ABC Error - Debug Help needed

[ramrajrl]

ABC is erroring out in the refactor stage, not sure how to begin to debug this. Any help/ideas would be much appreciated.
Thanks

59.1.1. Executing ABC.
Running ABC command: "/build/bin/yosys-abc" -s -f /tmp/yosys-abc-KwroQr/abc.script 2>&1
ABC: ABC command line: "source /tmp/yosys-abc-KwroQr/abc.script".
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ABC: + refactor 
ABC: yosys-abc: src/base/abc/abcAig.c:167: void abc::Abc_AigFree(abc::Abc_Aig_t*): Assertion `Vec_PtrSize( pMan->vStackReplaceOld ) == 0' failed.
ABC: Flags A, B, or C are not zero.
ERROR: ABC: execution of command ""/build/bin/yosys-abc" -s -f /tmp/yosys-abc-KwroQr/abc.script 2>&1" failed: return code 134.

[ramrajrl]

Any ideas?
refactor failure when running ABC
Aborted (core dumped)

[ramrajrl]

#174 has the details.