tokudb.type_datetime failed in buildbot with wrong result

tokudb.type_datetime                     w4 [ fail ]

        Test ended at 2018-01-04 00:00:01

CURRENT_TEST: tokudb.type_datetime

--- /usr/local/mariadb-10.1.31-linux-x86_64/mysql-test/plugin/tokudb/tokudb/r/type_datetime.result	2018-01-03 22:02:12.000000000 +0200

+++ /usr/local/mariadb-10.1.31-linux-x86_64/mysql-test/plugin/tokudb/tokudb/r/type_datetime.reject	2018-01-04 00:00:00.872549140 +0200

@@ -61,8 +61,6 @@

 drop table t1;

 CREATE TABLE t1 (a timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, b date, c time, d datetime);

 insert into t1 (b,c,d) values(now(),curtime(),now());

-Warnings:

-Note	1265	Data truncated for column 'b' at row 1

 select date_format(a,"%Y-%m-%d")=b,right(a+0,6)=c+0,a=d+0 from t1;

 date_format(a,"%Y-%m-%d")=b	right(a+0,6)=c+0	a=d+0

 1	1	1

@@ -235,7 +233,7 @@

 insert into t1(f1) values(curdate());

 select curdate() < now(), f1 < now(), cast(f1 as date) < now() from t1;

 curdate() < now()	f1 < now()	cast(f1 as date) < now()

-1	1	1

+0	0	0

 delete from t1;

 insert into t1 values('2001-01-01','2001-01-01 01:01:01','2001-01-01 01:01:01');

 insert into t1 values('2001-02-05','2001-02-05 00:00:00','2001-02-05 01:01:01');

@@ -302,6 +300,7 @@

 2001-04-15 00:00:00

 SELECT 1 from dual where NOW() BETWEEN CURRENT_DATE() - INTERVAL 1 DAY AND CURRENT_DATE();

 1

+1

 drop table t1;

 create table t1 (f1 date);

 insert into t1 values('01-01-01'),('01-01-02'),('01-01-03');

mysqltest: Result length mismatch

Warnings from just before the error:

Warning 1265 Data truncated for column 't' at row 1 

Warning 1264 Out of range value for column 't' at row 1