From @zoffixznet

Some methods don't seem to get autothreaded correctly. Str does have .Numeric, but when junctioned, it doesn't seem to be reachable​:

  $ perl6 -e 'say any("42",42).Int'
  any(42, 42)
 
  $ perl6 -e 'say any("42",42).Numeric'
  Cannot resolve caller Numeric(Str​: ); none of these signatures match​:
  (Mu​:U \v​: *%_)
  in block <unit> at -e line 1

  $ perl6 -e 'say any("42",42).Real'
  Cannot resolve caller Real(Str​: ); none of these signatures match​:
  (Mu​:U \v​: *%_)
  in block <unit> at -e line 1

  $ perl6 -e 'say "42".Numeric'
  42
 
  $ perl6 -e 'say "42".Real'
  42

  $ perl6 -v
  This is Rakudo version 2017.03-153-gb1e7a01 built on MoarVM version 2017.03-87-g5d73bf4
  implementing Perl 6.c.

From @FCO

Em Fri, 07 Apr 2017 10​:49​:02 -0700, cpan@​zoffix.com escreveu​:

Some methods don't seem to get autothreaded correctly. Str does have
.Numeric, but when junctioned, it doesn't seem to be reachable​:

$ perl6 -e 'say any("42",42).Int'
any(42, 42)

$ perl6 -e 'say any("42",42).Numeric'
Cannot resolve caller Numeric(Str​: ); none of these signatures match​:
(Mu​:U \v​: *%_)
in block <unit> at -e line 1

$ perl6 -e 'say any("42",42).Real'
Cannot resolve caller Real(Str​: ); none of these signatures match​:
(Mu​:U \v​: *%_)
in block <unit> at -e line 1

$ perl6 -e 'say "42".Numeric'
42

$ perl6 -e 'say "42".Real'
42

$ perl6 -v
This is Rakudo version 2017.03-153-gb1e7a01 built on MoarVM version
2017.03-87-g5d73bf4
implementing Perl 6.c.

That's not problem only on Int​:

$ ./perl6 -e 'say any(42, 42.0).Numeric'
Cannot resolve caller Numeric(Int​: ); none of these signatures match​:
  (Mu​:U \v​: *%_)
  in block <unit> at -e line 1

$ ./perl6 -e 'say any(42.0, 42).Numeric'
Cannot resolve caller Numeric(Rat​: ); none of these signatures match​:
  (Mu​:U \v​: *%_)
  in block <unit> at -e line 1

The RT System itself - Status changed from 'new' to 'open'

See also rakudo/rakudo#3893