In 5.1, using strawberry perl, VS2010 and cmake 2.8.3
win\configure-mariadb.bat
cmake .
devenv mysql.sln /build debug

.........

CURRENT_TEST: maria.maria-recovery2
mysqltest: In included file ".\include\maria_make_snapshot_for_comparison.inc":
At line 18: query 'drop database if exists mysqltest_for_$mms_purpose' failed: 2
013: Lost connection to MySQL server during query

The result from queries just before the failure was:
call mtr.add_suppression("File '.maria_log.000.' not found
(Errcode: 2
)");

call mtr.add_suppression("Table '.\/mysqltest\/t_corrupted1' is crashed, skippin
g it. Please repair it with maria_chk -r");
set global maria_log_file_size=4294967295;
drop database if exists mysqltest;
....