Parsed test spec with 2 sessions

starting permutation: s1a s1c s2a s2c
schema_name|table_name     
-----------+---------------
public     |ts_cluster_test

step s1a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:01', 23.4, 1);
step s1c: ROLLBACK;
step s2a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:02', 0.72, 1);
step s2c: COMMIT;

starting permutation: s1a s2a s1c s2c
schema_name|table_name     
-----------+---------------
public     |ts_cluster_test

step s1a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:01', 23.4, 1);
step s2a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:02', 0.72, 1); <waiting ...>
step s1c: ROLLBACK;
step s2a: <... completed>
step s2c: COMMIT;

starting permutation: s1a s2a s2c s1c
schema_name|table_name     
-----------+---------------
public     |ts_cluster_test

step s1a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:01', 23.4, 1);
step s2a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:02', 0.72, 1); <waiting ...>
step s2a: <... completed>
ERROR:  canceling statement due to lock timeout
step s2c: COMMIT;
step s1c: ROLLBACK;

starting permutation: s2a s1a s1c s2c
schema_name|table_name     
-----------+---------------
public     |ts_cluster_test

step s2a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:02', 0.72, 1);
step s1a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:01', 23.4, 1); <waiting ...>
step s1a: <... completed>
ERROR:  canceling statement due to lock timeout
step s1c: ROLLBACK;
step s2c: COMMIT;

starting permutation: s2a s1a s2c s1c
schema_name|table_name     
-----------+---------------
public     |ts_cluster_test

step s2a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:02', 0.72, 1);
step s1a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:01', 23.4, 1); <waiting ...>
step s2c: COMMIT;
step s1a: <... completed>
step s1c: ROLLBACK;

starting permutation: s2a s2c s1a s1c
schema_name|table_name     
-----------+---------------
public     |ts_cluster_test

step s2a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:02', 0.72, 1);
step s2c: COMMIT;
step s1a: INSERT INTO ts_cluster_test VALUES ('2017-01-20T09:00:01', 23.4, 1);
step s1c: ROLLBACK;
