Trouble running regression tests

[pykello]

I got the following errors when trying to run the regression tests in PG11:

*** /home/hadi/projects/test-cluster/cstore_fdw/expected/load.out	2018-12-13 22:13:48.273072679 -0500
--- /home/hadi/projects/test-cluster/cstore_fdw/results/load.out	2018-12-13 22:13:48.709069351 -0500
***************
*** 5,10 ****
--- 5,11 ----
  COPY contestant FROM '/home/hadi/projects/test-cluster/cstore_fdw/data/contestants.1.csv'
  	WITH DELIMITER '|'; -- ERROR
  ERROR:  missing data for column "birthdate"
+ CONTEXT:  COPY contestant, line 1: "a,1990-01-10,2090,97.1,XA ,{a}"
  -- COPY with invalid program
  COPY contestant FROM PROGRAM 'invalid_program' WITH CSV; -- ERROR
  ERROR:  program "invalid_program" failed

======================================================================

*** /home/hadi/projects/test-cluster/cstore_fdw/expected/drop.out	2018-12-12 21:54:05.667894921 -0500
--- /home/hadi/projects/test-cluster/cstore_fdw/results/drop.out	2018-12-13 22:13:49.441063765 -0500
***************
*** 92,97 ****
  SELECT count(*) FROM pg_ls_dir('cstore_fdw') WHERE pg_ls_dir != :postgres_oid::text;
   count 
  -------
!      1
  (1 row)
  
--- 92,97 ----
  SELECT count(*) FROM pg_ls_dir('cstore_fdw') WHERE pg_ls_dir != :postgres_oid::text;
   count 
  -------
!      2
  (1 row)
  

======================================================================

[mtuncer]

I can't reliably reproduce this.

I was able to see repro once where dboid for database being dropped is returned differently from get_database_oid but I could not reproduce it successfully afterwards.

travis looks ok