traceback of mono run/Niecza.exe -e 'say 1'

gistfile1.txt

$ mono run/Niecza.exe -e 'say 1'
Unhandled exception: Unable to resolve method keys in class Array
  at /home/larry/perl6/niecza/lib/SAFE.setting line 922 (SAFE keys @ 2)
  at /home/larry/perl6/niecza/src/Metamodel.pm6 line 192 (Metamodel Namespace.list_stash @ 7)
  at /home/larry/perl6/niecza/src/Metamodel.pm6 line 603 (Metamodel Unit.list_stash @ 3)
  at /home/larry/perl6/niecza/src/Metamodel.pm6 line 683 (Metamodel C268_ANON @ 23)
  at /home/larry/perl6/niecza/src/Metamodel.pm6 line 92 (Metamodel visitor @ 3)
  at /home/larry/perl6/niecza/src/Metamodel.pm6 line 95 (Metamodel visitor @ 11)
  at /home/larry/perl6/niecza/src/Metamodel.pm6 line 99 (Metamodel Namespace.visit_stashes @ 4)
  at /home/larry/perl6/niecza/src/Metamodel.pm6 line 690 (Metamodel Unit.create_syml @ 13)
  at /home/larry/perl6/niecza/src/NieczaFrontendSTD.pm6 line 69 (NieczaFrontendSTD STD.load_lex @ 17)
  at /home/larry/perl6/niecza/src/STD.pm6 line 5330 (STD STD.load_setting @ 2)
  at /home/larry/perl6/niecza/src/STD.pm6 line 1150 (STD C301_ANON @ 8)
  at /home/larry/perl6/niecza/src/STD.pm6 line 1163 (STD C300_ANON @ 1)
  at /home/larry/perl6/niecza/src/STD.pm6 line 1163 (STD P6.comp_unit @ 47)
  at /home/larry/perl6/niecza/src/STD.pm6 line 128 (STD STD.TOP @ 7)
  at /home/larry/perl6/niecza/lib/SAFE.setting line 1061 (SAFE Grammar.parse @ 3)
  at /home/larry/perl6/niecza/src/NieczaFrontendSTD.pm6 line 130 (NieczaFrontendSTD NieczaFrontendSTD.parse @ 46)
  at /home/larry/perl6/niecza/src/NieczaCompiler.pm6 line 24 (NieczaCompiler C14_ANON @ 2)
  at /home/larry/perl6/niecza/src/NieczaCompiler.pm6 line 36 (NieczaCompiler NieczaCompiler.compile @ 32)
  at /home/larry/perl6/niecza/src/NieczaCompiler.pm6 line 61 (NieczaCompiler NieczaCompiler.compile_string @ 2)
  at /home/larry/perl6/niecza/src/niecza line 587 (MAIN mainline @ 82)
  at /home/larry/perl6/niecza/lib/CORE.setting line 45 (CORE C15_ANON @ 1)
  at /home/larry/perl6/niecza/lib/CORE.setting line 46 (CORE module-CORE @ 6)
  at /home/larry/perl6/niecza/lib/CORE.setting line 46 (CORE mainline @ 1)
  at /home/larry/perl6/niecza/lib/SAFE.setting line 1070 (SAFE C378_ANON @ 1)
  at /home/larry/perl6/niecza/lib/SAFE.setting line 1071 (SAFE module-SAFE @ 29)
  at /home/larry/perl6/niecza/lib/SAFE.setting line 1071 (SAFE mainline @ 1)
  at  line 0 (boot-MAIN @ 3)
  at  line 0 (ExitRunloop @ 0)