Bug#796944: biber: FTBFS with perl 5.22: test failures

[Dominic Hargreaves <dom@earth.li>]

Source: biber
Version: 2.1-2
Severity: important
User: debian-perl@lists.debian.org
Usertags: perl-5.22-transition
Tags: sid stretch

This package FTBFS with perl 5.22 (currently in experimental):

#   Failed test 'Cyclic crossref error check'
#   at t/crossrefs.t line 485.
# --- Got
# +++ Expected
# @@ -1,2 +1 @@
# -'Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/\\A{ <-- HERE \\X+}\\z/ at /«PKGBUILDDIR»/blib/lib/Biber/Input/file/bibtex.pm line 751.
# +'ERROR - Circular inheritance between \'circ1\'<->\'circ2\''
# -ERROR - Circular inheritance between \'circ1\'<->\'circ2\''
# Looks like you failed 1 test of 31.
t/crossrefs.t ......... 

...

#   Failed test 'Cyclic xdata error check'
#   at t/xdata.t line 112.
# --- Got
# +++ Expected
# @@ -1,2 +1 @@
# -'Unescaped left brace in regex is deprecated, passed through in regex; marked
 by <-- HERE in m/\\A{ <-- HERE \\X+}\\z/ at /«PKGBUILDDIR»/blib/lib/Biber/Input
/file/bibtex.pm line 751.
# +'ERROR - Circular XDATA inheritance between \'loop\'<->\'loop:3\''
# -ERROR - Circular XDATA inheritance between \'loop\'<->\'loop:3\''
# Looks like you failed 1 test of 5.

Test Summary Report
-------------------
t/crossrefs.t       (Wstat: 256 Tests: 31 Failed: 1)
  Failed test:  23
  Non-zero exit status: 1
t/dm-dateformats.t  (Wstat: 65280 Tests: 0 Failed: 0)
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 33 tests but ran 0.
t/xdata.t           (Wstat: 256 Tests: 5 Failed: 1)
  Failed test:  5
  Non-zero exit status: 1
Files=41, Tests=960, 173 wallclock secs ( 0.37 usr  0.44 sys + 151.37 cusr 15.59 csys = 167.77 CPU)
Result: FAIL

Cheers,
Dominic.