mysql-5.1 version 5.1.58-1ubuntu4 FTBFS on i386 in precise

This is a semi-automatic report based on the latest archive rebuild results [1].
Apologies if it reaches you in error.

Excerpt from the buildlog:

binlog.binlog_mix_innodb_stat [ pass ] 186
binlog.binlog_mixed_failure_mixing_engines [ pass ] 77
binlog.binlog_row_mysqlbinlog_db_filter [ skipped ] Doesn't support --binlog-format='mixed'
------------------------------------------------------------
The servers were restarted 157 times
Spent 886.986 of 1409 seconds executing testcases

Completed: Failed 1/737 tests, 99.86% were successful.

Failing test(s): main.query_cache_28249

The log files in var/log may give you some hint of what went wrong.

If you want to report this error, please read first the documentation
at http://dev.mysql.com/doc/mysql/en/mysql-test-suite.html

mysql-test-run: *** ERROR: there were failing test cases
make[2]: *** [test-ns] Error 1
make[2]: Leaving directory `/build/buildd/mysql-5.1-5.1.58/builddir'
make[1]: *** [test-force] Error 2
make[1]: Leaving directory `/build/buildd/mysql-5.1-5.1.58/builddir'
make: *** [build-stamp] Error 1
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20120208-2149
FAILED [dpkg-buildpackage died]

The full buidlog can be found at https://launchpad.net/ubuntu/+archive/test-rebuild-20120201/+build/3163052/+files/buildlog_ubuntu-precise-i386.mysql-5.1_5.1.58-1ubuntu4_FAILEDTOBUILD.txt.gz.

[1] http://people.ubuntuwire.org/~wgrant/rebuild-ftbfs-test/test-rebuild-20120201-precise.html