PANIC at Option.get! Init.Data.Option.BasicAux:22:14: value is none
backtrace:
/usr/bin/../lib/lean/libleanshared.so(+0x95be917) [0x7f96330f6917]
/usr/bin/../lib/lean/libleanshared.so(+0x95b45e0) [0x7f96330ec5e0]
/usr/bin/../lib/lean/libleanshared.so(lean_panic_fn_borrowed+0x32) [0x7f96330ec6d2]
/usr/bin/leanexport(Array.mapMUnsafe.map [private] spec at main+0x155) [0x5642c5fc6585]
/usr/bin/leanexport([lean] main+0x206) [0x5642c5fc6946]
/usr/bin/../lib/lean/libleanshared.so(+0x95ae560) [0x7f96330e6560]
/usr/bin/../lib/lean/libleanshared.so(+0x95aee68) [0x7f96330e6e68]
/usr/bin/../lib/libc.so.6(+0x99249) [0x7f96299c3249]
/usr/bin/../lib/libc.so.6(+0x12453c) [0x7f9629a4e53c]
uncaught exception: import failed, trying to import module with anonymous name