pg_upgrade not able to cope with pg_largeobject being in a different tablespace

Linking user relation files
No match found in new cluster for old relation with OID 16388 in database "andreak": "pg_toast.pg_toast_2613" which is the TOAST table for "pg_catalog.pg_largeobject"
No match found in new cluster for old relation with OID 16390 in database "andreak": "pg_toast.pg_toast_2613_index" which is an index on "pg_toast.pg_toast_2613" which is the TOAST table for "pg_catalog.pg_largeobject"

Failed to match up old and new tables in database "andreak"
Failure, exiting

 

I issued the following command:

PG_NEW_VERSION=9.6
PG_OLD_VERSION=9.5
/usr/lib/postgresql/$PG_NEW_VERSION/bin/pg_upgrade \
          --old-bindir=/usr/lib/postgresql/$PG_OLD_VERSION/bin/ \
          --new-bindir=/usr/lib/postgresql/$PG_NEW_VERSION/bin/ \
          --old-datadir=/var/lib/postgresql/$PG_OLD_VERSION/main \
          --new-datadir=/var/lib/postgresql/$PG_NEW_VERSION/main \
          -o " -c config_file=/etc/postgresql/$PG_OLD_VERSION/main/postgresql.conf" \
          -O " -c config_file=/etc/postgresql/$PG_NEW_VERSION/main/postgresql.conf" \
          --link

I have tablespaces configured outside PGDATA:

ln -s /storage/wal/9.5/pg_xlog /var/lib/postgresql/9.5/main/pg_xlog
ln -s /storage/fast_ssd/9.5/tablespaces /var/lib/postgresql/9.5/tablespaces
ln -s /storage/archive_disk/9.5/tablespaces_lo /var/lib/postgresql/9.5/tablespaces_lo