postgres@ip-10-1-1-68:~$ createdb foo
postgres@ip-10-1-1-68:~$ psql foo -c "create table t(a bigint primary key, b text);"
CREATE TABLE
postgres@ip-10-1-1-68:~$ psql foo -c "create extension pg_repack"
CREATE EXTENSION
postgres@ip-10-1-1-68:~$ pg_repack -t t -d foo
INFO: repacking table "t"
postgres@ip-10-1-1-68:~$ psql foo -c "create extension pg_pathman"
CREATE EXTENSION
postgres@ip-10-1-1-68:~$ pg_repack -t t -d foo
INFO: repacking table "t"
ERROR: query failed: ERROR: SET TRANSACTION ISOLATION LEVEL must be called before any query
DETAIL: query was: BEGIN ISOLATION LEVEL SERIALIZABLE
postgres@ip-10-1-1-68:~$ psql foo -c "drop extension pg_pathman"
DROP EXTENSION
postgres@ip-10-1-1-68:~$ pg_repack -t t -d foo
INFO: repacking table "t"
postgres@ip-10-1-1-68:~$