In file included from rocksdb/utilities/backupable/backupable_db.cc:16:
rocksdb/util/channel.h:35:33: error: no matching constructor for initialization of 'std::lock_guard<std::mutex>'
std::lock_guard<std::mutex> lk(lock_);
^ ~~~~~
/usr/include/c++/v1/__mutex_base:90:14: note: candidate constructor not viable: 1st argument ('const std::mutex') would lose const qualifier
explicit lock_guard(mutex_type& __m) _LIBCPP_THREAD_SAFETY_ANNOTATION(acquire_capability(__m))
^
/usr/include/c++/v1/__mutex_base💯5: note: candidate constructor not viable: no known conversion from 'const std::mutex' to 'const std::__1::lock_guard<std::__1::mutex>' for 1st argument
lock_guard(lock_guard const&) _LIBCPP_EQUAL_DELETE;
^
/usr/include/c++/v1/__mutex_base:94:5: note: candidate constructor not viable: requires 2 arguments, but 1 was provided
lock_guard(mutex_type& __m, adopt_lock_t) _LIBCPP_THREAD_SAFETY_ANNOTATION(requires_capability(__m))
^
1 error generated.
net/ceph* will still not build because Clang crashes but at least
it goes beyond the above error.
c362b80958