[Windows] failure in compact_functional cb_args.n_moved_docs == n (win-forestdb)

C:\Users\Administrator\forestdb\build\tests\functional>compact_functional_test.exe

The process cannot access the file because it is being used by another process.
Test failed: C:\Users\Administrator\forestdb\tests\functional\compact_functional
_test.cc 119
Assertion failed: cb_args.n_moved_docs == n, file C:\Users\Administrator\forestd
b\tests\functional\compact_functional_test.cc, line 119

variable inspect shows n_moved_docs = 1020, n = 1000

+ cb_args

{n_moved_docs=1020 n_batch_move=0 begin=true ...}

cb_args
cb_args.n_moved_docs 1020 int
+ dbfile 0x005b7bd0 {root=0x005b7c30 {kvs_config=

{create_if_missing=true custom_cmp=0x00000000 }

kvs=0x005c2668

{...}

...} ...} _fdb_file_handle *
n 1000 int

compact_functional_test.exe!compaction_callback_test() Line 119 C++
compact_functional_test.exe!main() Line 1631 C++
[External Code]