verify asserting in os_calloc

[1387382475:370904][102983:00b7ff29927f0000], t, file:wt-000060.lsm, session.verify: ../src/os_posix/os_alloc.c, 33: number != 0 && size != 0

[1387382475:370931][102983:00b7ff29927f0000], t, file:wt-000060.lsm, session.verify: aborting WiredTiger library

/tmp/hudson8197687470836067351.sh: line 22: 102983 Aborted                 (core dumped) ./t

+ status=134

+ '[' -f RUNDIR/run ']'

+ cat RUNDIR/run

############################################

#  RUN PARAMETERS

############################################

auto_throttle=1

firstfit=0

# bitcnt not applicable to this run

bloom=1

bloom_bit_count=4

bloom_hash_count=9

bloom_oldest=1

cache=100

checksum=on

chunk_size=2

compaction=0

compression=none

data_extend=0

data_source=lsm

delete_pct=45

dictionary=0

file_type=row-store

hot_backups=1

huffman_key=0

huffman_value=0

insert_pct=54

internal_key_truncation=1

internal_page_max=9

key_gap=5

key_max=106

key_min=28

leaf_page_max=9

merge_max=10

merge_threads=2

ops=100000

prefix_compression=0

prefix_compression_min=0

repeat_data_pct=48

reverse=0

rows=100000

runs=100

split_pct=40

statistics=0

threads=12

value_max=827

value_min=2

# wiredtiger_config not applicable to this run

write_pct=60

############################################