Aha - this is why I didn't use ->can originally

Punt for the time being, will investigate why later. The error looks like:

rabbit@Ahasver:~/devel/dbic$ git rev-parse HEAD
32497625ce5699576c8a63edd16401d4f741c282

rabbit@Ahasver:~/devel/dbic$ PERL5LIB=/home/rabbit/devel/sqla/lib prove -lT t/100populate.t
t/100populate.t .. 1/? Stub found while resolving method "???" overloading """" in package "Path::Class::File" at /home/rabbit/devel/sqla/lib/SQL/Abstract.pm line 118, <> line 1.
t/100populate.t .. Dubious, test returned 255 (wstat 65280, 0xff00)
All 43 subtests passed

Test Summary Report
-------------------
t/100populate.t (Wstat: 65280 Tests: 43 Failed: 0)
  Non-zero exit status: 255
  Parse errors: No plan found in TAP output
Files=1, Tests=43,  1 wallclock secs ( 0.04 usr  0.00 sys +  0.90 cusr  0.03 csys =  0.97 CPU)
Result: FAIL