Major - P3 The changes to btree/bt_debug.c from WT-3705 broke the build on the Mac.
../src/btree/bt_debug.c:736:45: error: format specifies type
'unsigned long long' but the argument has type 'size_t'
(aka 'unsigned long') [-Werror,-Wformat]
WT_RET(ds->f(ds, ", memory_size %" PRIu64, page->memory_footprint));
That one line was added in https://github.com/wiredtiger/wiredtiger/pull/3765