Test failure in latest rakudo

[dwarring]

david@X346:~/git/perl6-Color$ perl6 -v
This is Rakudo version 2016.12-377-g7ddc5f7 built on MoarVM version 2016.12-113-gd1da1ba
implementing Perl 6.c.
david@X346:~/git/perl6-Color$ prove -e'perl6 -I lib' t/01-new-key-value.t 
t/01-new-key-value.t .. # Short 3-hex
t/01-new-key-value.t .. 1/? # Short 4-hex
# Full 6-hex
# Full 8-hex
# RGB tuple
Parameter '$v' expected a writable container, but got IntStr value
  in sub clip-to at /home/david/git/perl6-Color/lib/Color.pm6 (Color) line 259
  in method new at /home/david/git/perl6-Color/lib/Color.pm6 (Color) line 38
  in block <unit> at t/01-new-key-value.t line 131

t/01-new-key-value.t .. Dubious, test returned 1 (wstat 256, 0x100)
All 13 subtests passed 

Test Summary Report
-------------------
t/01-new-key-value.t (Wstat: 256 Tests: 13 Failed: 0)
  Non-zero exit status: 1
  Parse errors: No plan found in TAP output
Files=1, Tests=13,  3 wallclock secs ( 0.10 usr  0.00 sys +  2.44 cusr  0.09 csys =  2.63 CPU)
Result: FAIL

[zoffixznet]

Thanks.

Identified as a regression in Rakudo introduced in this commit: rakudo/rakudo@fab1a14