/usr/lib/perl6/sources/C57EBB9F7A3922A4DA48EE8FCF34A4DC55942942 is in rakudo 2018.03-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22  | class CompUnit::Repository::Staging is CompUnit::Repository::Installation {
    has Str $.name;
    submethod BUILD(Str :$!name --> Nil) {
        CompUnit::RepositoryRegistry.register-name($!name, self);
    }
    method short-id() { 'staging' }
    method name(--> Str) {
        $!name
    }
    method path-spec(CompUnit::Repository::Staging:D:) {
        self.^name ~ '#name(' ~ $!name ~ ')#' ~ $.prefix.absolute;
    }
    method source-file(Str $name --> IO::Path) {
        my $file = self.prefix.add($name);
        $file.e ?? $file !! self.next-repo.source-file($name)
    }
}
# vim: ft=perl6
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