CURRENT_TEST: /home/cmolter/bzr/qrewrite_plugin/plugin/rewrite_tree/tests/mtr.basic
2013-08-13 15:45:31 0 [Warning] TIMESTAMP with implicit DEFAULT value is deprecated. Please use --explicit_defaults_for_timestamp server option (see documentation for more details).
2013-08-13 15:45:31 17993 [Warning] Buffered warning: Could not increase number of max_open_files to more than 1024 (request: 4161)

2013-08-13 15:45:31 17993 [Warning] Buffered warning: Changed limits: table_cache: 431 (requested 2000)

2013-08-13 15:45:31 17993 [Note] Plugin 'FEDERATED' is disabled.
2013-08-13 15:45:31 17993 [Warning] InnoDB: Using innodb_additional_mem_pool_size is DEPRECATED. This option may be removed in future releases, together with the option innodb_use_sys_malloc and with the InnoDB's internal memory allocator.
 InnoDB: !!!!!!!! UNIV_DEBUG switched on !!!!!!!!!
2013-08-13 15:45:31 7f1f60955740 InnoDB: !!!!!!!! UNIV_SYNC_DEBUG switched on !!!!!!!!!
2013-08-13 15:45:31 17993 [Note] InnoDB: The InnoDB memory heap is disabled
2013-08-13 15:45:31 17993 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2013-08-13 15:45:31 17993 [Note] InnoDB: Uses event mutexes
2013-08-13 15:45:31 17993 [Note] InnoDB: Compressed tables use zlib 1.2.3
2013-08-13 15:45:31 17993 [Note] InnoDB: Using Linux native AIO
2013-08-13 15:45:31 17993 [Note] InnoDB: Number of pools: 1
2013-08-13 15:45:31 17993 [Note] InnoDB: Not using CPU crc32 instructions
2013-08-13 15:45:31 17993 [Note] InnoDB: Initializing buffer pool, total size = 8.0M, instances = 1
2013-08-13 15:45:31 17993 [Note] InnoDB: Completed initialization of buffer pool
2013-08-13 15:45:31 17993 [Note] InnoDB: Highest supported file format is Barracuda.
2013-08-13 15:45:32 17993 [Note] InnoDB: Creating shared tablespace for temporary tables
2013-08-13 15:45:32 17993 [Note] InnoDB: Setting file "./ibtmp1" size to 12 MB
2013-08-13 15:45:32 17993 [Note] InnoDB: Database physically writes the file full: wait ...
2013-08-13 15:45:33 17993 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
2013-08-13 15:45:33 17993 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
2013-08-13 15:45:33 17993 [Note] InnoDB: Waiting for purge to start
2013-08-13 15:45:33 17993 [Note] InnoDB: 5.7.2 started; log sequence number 1591422
2013-08-13 15:45:33 17993 [Warning] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 3e3b3816-0416-11e3-9d82-1c6f6509add4.
2013-08-13 15:45:33 17993 [Note] Server hostname (bind-address): '*'; port: 13040
2013-08-13 15:45:33 17993 [Note] IPv6 is available.
2013-08-13 15:45:33 17993 [Note]   - '::' resolves to '::';
2013-08-13 15:45:33 17993 [Note] Server socket created on IP: '::'.
2013-08-13 15:45:33 17993 [Note] Event Scheduler: Loaded 0 events
2013-08-13 15:45:33 17993 [Note] /export/home/tmp/cmolter/sql/mysqld: ready for connections.
Version: '5.7.2-m12-debug-log'  socket: '/export/home/tmp/cmolter/mysql-test/var/tmp/mysqld.1.sock'  port: 13040  Source distribution
mysqld: /home/cmolter/bzr/qrewrite_plugin/sql/opt_explain_json.cc:1941: virtual bool Explain_format_JSON::end_context(enum_parsing_context): Assertion `!"No derived table found!"' failed.
12:47:24 UTC - mysqld got signal 6 ;
This could be because you hit a bug. It is also possible that this binary
or one of the libraries it was linked against is corrupt, improperly built,
or misconfigured. This error can also be caused by malfunctioning hardware.
We will try our best to scrape up some info that will hopefully help
diagnose the problem, but since we have already crashed, 
something is definitely wrong and this may fail.

key_buffer_size=1048576
read_buffer_size=131072
max_used_connections=1
max_threads=151
thread_count=1
connection_count=1
It is possible that mysqld could use up to 
key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 60901 K  bytes of memory
Hope that's ok; if not, decrease some variables in the equation.

Thread pointer: 0x7f1f2c000c50
Attempting backtrace. You can use the following information to find out
where mysqld died. If you see no messages after this, something went
terribly wrong...
stack_bottom = 7f1f5415edf0 thread_stack 0x40000
/export/home/tmp/cmolter/sql/mysqld(my_print_stacktrace+0x35)[0xb316d7]
/export/home/tmp/cmolter/sql/mysqld(handle_fatal_signal+0x405)[0x829aa4]
/lib64/libpthread.so.0(+0xf000)[0x7f1f60557000]
/lib64/libc.so.6(gsignal+0x35)[0x7f1f5f166ba5]
/lib64/libc.so.6(abort+0x148)[0x7f1f5f168358]
/lib64/libc.so.6(+0x2e972)[0x7f1f5f15f972]
/lib64/libc.so.6(+0x2ea22)[0x7f1f5f15fa22]
/export/home/tmp/cmolter/sql/mysqld(_ZN19Explain_format_JSON11end_contextE20enum_parsing_context+0x31c)[0xa3480a]
/export/home/tmp/cmolter/sql/mysqld(_ZN7Explain18explain_subqueriesEv+0x3eb)[0xa27f49]
/export/home/tmp/cmolter/sql/mysqld(_ZN7Explain4sendEv+0xed)[0xa281d3]
/export/home/tmp/cmolter/sql/mysqld(_Z27explain_query_specificationP3THDP13st_select_lex20enum_parsing_context+0x504)[0xa2d05d]
/export/home/tmp/cmolter/sql/mysqld[0xa2d6a5]
/export/home/tmp/cmolter/sql/mysqld(_Z13explain_queryP3THDP18st_select_lex_unitP13select_result+0x27a)[0xa2d3d9]
/export/home/tmp/cmolter/sql/mysqld[0x8d15c0]
/export/home/tmp/cmolter/sql/mysqld(_Z21mysql_execute_commandP3THD+0xbbb)[0x8ca854]
/export/home/tmp/cmolter/sql/mysqld(_Z11mysql_parseP3THDPcjP12Parser_state+0x505)[0x8d24e2]
/export/home/tmp/cmolter/sql/mysqld(_Z16dispatch_command19enum_server_commandP3THDPcj+0xcbf)[0x8c7b99]
/export/home/tmp/cmolter/sql/mysqld(_Z10do_commandP3THD+0x343)[0x8c6c55]
/export/home/tmp/cmolter/sql/mysqld(handle_connection+0x133)[0x9cbe16]
/export/home/tmp/cmolter/sql/mysqld(pfs_spawn_thread+0x14e)[0xe8d541]
/lib64/libpthread.so.0(+0x7d15)[0x7f1f6054fd15]
/lib64/libc.so.6(clone+0x6d)[0x7f1f5f22348d]

Trying to get some variables.
Some pointers may be invalid and cause the dump to abort.
Query (7f1f2c00dd20): EXPLAIN FORMAT=JSON SELECT * FROM (     SELECT dummy FROM item WHERE dummy IN (         SELECT dummy FROM item WHERE category IN ('Freeeeeze'))) freeeeeeeeeeeze
Connection ID (thread ID): 1
Status: NOT_KILLED

The manual page at http://dev.mysql.com/doc/mysql/en/crashing.html contains
information that should help you find out what is causing the crash.
Writing a core file