It should say subroutine, not variable.
EXPECT
Missing name in "state sub" at - line 2.
########
+# NAME our sub pack::foo
+our sub foo::bar;
+EXPECT
+No package name allowed for subroutine &foo::bar in "our" at - line 1, near "our sub foo::bar"
+Execution of - aborted due to compilation errors.
+########
# NAME my sub pack::foo
use feature 'lexical_subs', 'state';
my sub foo::bar;
if (PL_in_my == KEY_our) { /* "our" is merely analogous to "my" */
if (has_colon)
yyerror_pv(Perl_form(aTHX_ "No package name allowed for "
- "variable %s in \"our\"",
+ "%se %s in \"our\"",
+ *PL_tokenbuf=='&' ?"subroutin":"variabl",
PL_tokenbuf), UTF ? SVf_UTF8 : 0);
tmp = allocmy(PL_tokenbuf, tokenbuf_len, UTF ? SVf_UTF8 : 0);
}