Improve error message for newer files
Improve error message for newer files

bchapuis/restic,kurin/restic,jayme-github/restic,rakoo/restic,pombredanne/restic,kurin/restic,middelink/restic,fawick/restic,middelink/restic,restic/restic,howeyc/restic,klauspost/restic,stuertz/restic,ar-jan/restic,restic/restic,episource/restic,jayme-github/restic,ar-jan/restic,rakoo/restic,mappu/restic,byo/restic,ckemper67/restic,fawick/restic,intfrr/restic,byo/restic,stuertz/restic,arithmetric/restic