galera.galera_gcs_fc_limit fails in buildbot with timeout or Interrupted system call

galera.galera_gcs_fc_limit 'innodb_plugin' w1 [ fail ]  timeout after 900 seconds

        Test ended at 2017-09-19 10:26:05

Test case timeout after 900 seconds

== /dev/shm/var/1/log/galera_gcs_fc_limit.log == 

CREATE TABLE t1 (f1 INTEGER) ENGINE=InnoDB;

INSERT INTO t1 VALUES (1);

SELECT COUNT(*) = 1 FROM t1;

COUNT(*) = 1

1

SET GLOBAL wsrep_provider_options = 'gcs.fc_limit=1';

LOCK TABLE t1 WRITE;

INSERT INTO t1 VALUES (2);

INSERT INTO t1 VALUES (3);

INSERT INTO t1 VALUES (4);

 == /dev/shm/var/1/tmp/analyze-timeout-mysqld.1.err ==

mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/dev/shm/var/tmp/1/mysqld.1.sock' (111 "Connection refused")

 == /dev/shm/var/1/tmp/analyze-timeout-mysqld.2.err ==

mysqltest: Could not open connection 'default' after 500 attempts: 2002 Can't connect to local MySQL server through socket '/dev/shm/var/tmp/1/mysqld.2.sock' (111 "Connection refused")

galera.galera_gcs_fc_limit 'xtradb'      w2 [ fail ]  Found warnings/errors in server log file!

        Test ended at 2017-10-25 03:05:05

line

2017-10-25  3:05:01 2954881856 [Warning] WSREP: Failed to report last committed 1666, -4 (Interrupted system call)

^ Found warnings in /dev/shm/var/2/log/mysqld.1.err

ok