mongod --repair fails because verify() returns EBUSY under WiredTiger

2015-01-12T07:59:45.956-0500 I CONTROL  [initandlisten] MongoDB starting : pid=7608 port=27017 dbpath=/Users/bdlucas/db/db/r0 64-bit host=reboot.local

2015-01-12T07:59:45.956-0500 I CONTROL  [initandlisten] 

2015-01-12T07:59:45.956-0500 I CONTROL  [initandlisten] ** WARNING: soft rlimits too low. Number of files is 256, should be at least 1000

2015-01-12T07:59:45.956-0500 I CONTROL  [initandlisten] db version v2.8.0-rc4

2015-01-12T07:59:45.956-0500 I CONTROL  [initandlisten] git version: 3ad571742911f04b307f0071979425511c4f2570

2015-01-12T07:59:45.956-0500 I CONTROL  [initandlisten] build info: Darwin mci-osx108-7.build.10gen.cc 12.5.0 Darwin Kernel Version 12.5.0: Sun Sep 29 13:33:47 PDT 2013; root:xnu-2050.48.12~1/RELEASE_X86_64 x86_64 BOOST_LIB_VERSION=1_49

2015-01-12T07:59:45.966-0500 I CONTROL  [initandlisten] allocator: system

2015-01-12T07:59:45.966-0500 I CONTROL  [initandlisten] options: { repair: true, storage: { dbPath: "/Users/bdlucas/db/db/r0", engine: "wiredtiger" } }

2015-01-12T07:59:45.966-0500 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=8G,session_max=20000,extensions=[local=(entry=index_collator_extension)],statistics=(fast),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),

2015-01-12T07:59:46.743-0500 I STORAGE  [initandlisten] Repairing size cache

2015-01-12T07:59:47.085-0500 I STORAGE  [initandlisten] WiredTiger progress session.verify 2

2015-01-12T07:59:47.085-0500 I STORAGE  [initandlisten] Verify succeeded on uri table:sizeStorer. Not salvaging.

2015-01-12T07:59:47.085-0500 I STORAGE  [initandlisten] Repairing catalog metadata

2015-01-12T07:59:47.086-0500 I STORAGE  [initandlisten] WiredTiger progress session.verify 2

2015-01-12T07:59:47.086-0500 I STORAGE  [initandlisten] Verify succeeded on uri table:_mdb_catalog. Not salvaging.

2015-01-12T07:59:47.094-0500 I STORAGE  [initandlisten] repairDatabase local

2015-01-12T07:59:47.094-0500 I STORAGE  [initandlisten] Repairing collection local.startup_log

2015-01-12T07:59:47.094-0500 E STORAGE  [initandlisten] Verify on table:collection-0--7301267925547912616 failed with EBUSY. Assuming no salvage is needed.

2015-01-12T07:59:47.101-0500 I INDEX    [initandlisten] build index on: local.startup_log properties: { v: 1, key: { _id: 1 }, name: "_id_", ns: "local.startup_log" }

2015-01-12T07:59:47.101-0500 I INDEX    [initandlisten] 	 building index using bulk method

2015-01-12T07:59:47.195-0500 I STORAGE  [initandlisten] repairDatabase test

2015-01-12T07:59:47.195-0500 I STORAGE  [initandlisten] Repairing collection test.c

2015-01-12T07:59:47.195-0500 E STORAGE  [initandlisten] Verify on table:collection-2--7301267925547912616 failed with EBUSY. Assuming no salvage is needed.

2015-01-12T07:59:47.199-0500 I INDEX    [initandlisten] build index on: test.c properties: { v: 1, key: { _id: 1 }, name: "_id_", ns: "test.c" }

2015-01-12T07:59:47.199-0500 I INDEX    [initandlisten] 	 building index using bulk method

2015-01-12T07:59:47.203-0500 I INDEX    [initandlisten] build index on: test.c properties: { v: 1, key: { i: undefined }, name: "i_undefined", ns: "test.c" }

2015-01-12T07:59:47.203-0500 I INDEX    [initandlisten] 	 building index using bulk method

2015-01-12T07:59:47.204-0500 E STORAGE  [initandlisten] WiredTiger (0) [1421067587:204531][7608:0x7fff7db4c310], file:collection-2--7301267925547912616.wt, cursor.next: read checksum error [4096B @ 1810432, 164825738 != 0]

2015-01-12T07:59:47.204-0500 E STORAGE  [initandlisten] WiredTiger (0) [1421067587:204587][7608:0x7fff7db4c310], file:collection-2--7301267925547912616.wt, cursor.next: collection-2--7301267925547912616.wt: encountered an illegal file format or internal value

2015-01-12T07:59:47.204-0500 E STORAGE  [initandlisten] WiredTiger (-31804) [1421067587:204630][7608:0x7fff7db4c310], file:collection-2--7301267925547912616.wt, cursor.next: the process must exit and restart: WT_PANIC: WiredTiger library panic

2015-01-12T07:59:47.204-0500 I -        [initandlisten] Fatal Assertion 28558