Cannot assign to a readonly variable or a value
   at gen/moar/BOOTSTRAP/v6c.nqp:1826  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/share/perl6/lib/Perl6/BOOTSTRAP/v6c.moarvm:)
 from SETTING::src/core.c/Grammar.pm6:9  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/perl6/runtime/CORE.c.setting.moarvm:parse)
 from test.raku:66  (<ephemeral file>:TOP)
 from test.raku:53  (<ephemeral file>:TOP)
 from SETTING::src/core.c/Grammar.pm6:9  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/perl6/runtime/CORE.c.setting.moarvm:parse)
 from test.raku:71  (<ephemeral file>:<unit>)
 from test.raku:1  (<ephemeral file>:<unit-outer>)
 from gen/moar/stage2/NQPHLL.nqp:1949  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/nqp/lib/NQPHLL.moarvm:eval)
 from gen/moar/stage2/NQPHLL.nqp:2154  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/nqp/lib/NQPHLL.moarvm:evalfiles)
 from gen/moar/stage2/NQPHLL.nqp:2114  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/nqp/lib/NQPHLL.moarvm:command_eval)
 from gen/moar/Compiler.nqp:105  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/perl6/lib/Perl6/Compiler.moarvm:command_eval)
 from gen/moar/stage2/NQPHLL.nqp:2039  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/nqp/lib/NQPHLL.moarvm:command_line)
 from gen/moar/rakudo.nqp:140  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/perl6/runtime/perl6.moarvm:MAIN)
 from gen/moar/rakudo.nqp:1  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/perl6/runtime/perl6.moarvm:<mainline>)
 from <unknown>:1  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/perl6/runtime/perl6.moarvm:<main>)
 from <unknown>:1  (/mnt/e/github/husk-good/rakudo-moar-2022.07-01-linux-x86_64-gcc/bin/../share/perl6/runtime/perl6.moarvm:<entry>)