This works now. I've added a simple test to S02-names/pseudo.t with roast commit 7edf26aae4.
$ ./perl6-j -e 'say CORE::.keys' (SoftRoutine PF_LOCAL &METAOP_REDUCE_XOR &exit Rat Rational Slang &sqrt buf8 $?COMPILATION-ID &nextcallee &infix:<∘> &kv NQPMatchRole &any &sleep-until SIGTRAP &join &METAOP_TEST_ASSIGN:<or> &trait_mod:<is> &lc &infix:<...> NumericEnumeration &prefix:<temp> &exp &infix:<~|> &uniprops Method &slip &RETURN-LIST Promise &infix:<≼> &SUPPLY &infix:<max> &roots &infix:<(cont)> FileChangeEvent Seq &prefix:<?^> &tanh &infix:<==> &nodemap &infix:<~^> &infix:«>» Set &unshift PseudoStash &infix:<∖> &term:<time> &EVALFILE &METAOP_TEST_ASSIGN:<andthen> X &infix:<…> &POSITIONS &infix:<&> SIGCONT Metamodel &infix:<cmp> &infix:<~~> &infix:<^^> &lines Enumeration ProtocolFamily &INDIRECT_NAME_LOOKUP &mix e %DEPRECATIONS i &chop Grammar Planned &prefix:<+> &asinh $RAKUDO-VERBOSE-STACKFRAME CX &sum Parameter &pop &hash $! &min &wordcase &REQUIRE_IMPORT &infix:<o> Distro &SLICE_MORE_LIST &infix:<-> &callframe &sort &circumfix:<:{ }> $/ !CORE_MARKER SIGTTIN Stash &one &ords Regex Versio n &GENERATE-ROLE-FROM-VALUE List ...) I'm closing this ticket as 'resolved'.