non-constant.log

Unhandled exception: No exception handler located for warn
   at SETTING::src/core.c/control.rakumod:267  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:warn)
 from SETTING::src/core.c/Mu.rakumod:815  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:Str)
 from SETTING::src/core.c/List.rakumod:1200  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:join)
 from SETTING::src/core.c/Exception.rakumod:1340  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:)
 from SETTING::src/core.c/Exception.rakumod:1340  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:s)
 from SETTING::src/core.c/Exception.rakumod:1376  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:)
 from SETTING::src/core.c/Exception.rakumod:1375  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:)
 from SETTING::src/core.c/Rakudo/Iterator.rakumod:5693  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:sink-all)
 from SETTING::src/core.c/Seq.rakumod:159  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:sink)
 from SETTING::src/core.c/Exception.rakumod:1372  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:)
 from SETTING::src/core.c/Exception.rakumod:1359  (/home/dan/Source/raku/rakudo/blib/CORE.c.setting.moarvm:message)
 from NQP::src/HLL/Compiler.nqp:344  (/home/dan/r/install/share/nqp/lib/NQPHLL.moarvm:command_eval)
 from src/Perl6/Compiler.nqp:234  (/home/dan/Source/raku/rakudo/blib/Perl6/Compiler.moarvm:command_eval)
 from NQP::src/HLL/Compiler.nqp:269  (/home/dan/r/install/share/nqp/lib/NQPHLL.moarvm:command_line)
 from src/main.nqp:81  (/home/dan/Source/raku/rakudo/rakudo.moarvm:MAIN)
 from src/main.nqp:63  (/home/dan/Source/raku/rakudo/rakudo.moarvm:<mainline>)
 from <unknown>:1  (/home/dan/Source/raku/rakudo/rakudo.moarvm:<main>)
 from <unknown>:1  (/home/dan/Source/raku/rakudo/rakudo.moarvm:<entry>)