syncevolution FTBFS on yakkety: cannot convert ‘const boost::shared_ptr<SyncEvo::Logger>’ to ‘bool’

syncevolution fails to build from source in yakkety. Full build log attached.

./src/syncevo/Logging.h: In member function ‘SyncEvo::Logger::Handle::operator bool() const’:
./src/syncevo/Logging.h:258:41: error: cannot convert ‘const boost::shared_ptr<SyncEvo::Logger>’ to ‘bool’ in return
         operator bool () const { return m_logger; }
                                         ^~~~~~~~
In file included from ./src/syncevo/util.h:25:0,
                 from ./src/syncevo/ConfigFilter.h:22,
                 from src/syncevo/ConfigFilter.cpp:23:
./src/syncevo/Logging.h: In member function ‘SyncEvo::Logger::Handle::operator bool() const’:
./src/syncevo/Logging.h:258:41: error: cannot convert ‘const boost::shared_ptr<SyncEvo::Logger>’ to ‘bool’ in return
         operator bool () const { return m_logger; }
                                         ^~~~~~~~
In file included from ./src/syncevo/util.h:25:0,
                 from ./src/syncevo/GLibSupport.h:27,
                 from ./src/syncevo/EDSClient.h:29,
                 from src/syncevo/EDSClient.cpp:20:
./src/syncevo/Logging.h: In member function ‘SyncEvo::Logger::Handle::operator bool() const’:
./src/syncevo/Logging.h:258:41: error: cannot convert ‘const boost::shared_ptr<SyncEvo::Logger>’ to ‘bool’ in return
         operator bool () const { return m_logger; }
                                         ^~~~~~~~
In file included from ./src/syncevo/util.h:25:0,
                 from ./src/syncevo/GLibSupport.h:27,
                 from src/gdbusxx/gdbus-cxx-bridge.cpp:24:
./src/syncevo/Logging.h: In member function ‘SyncEvo::Logger::Handle::operator bool() const’:
./src/syncevo/Logging.h:258:41: error: cannot convert ‘const boost::shared_ptr<SyncEvo::Logger>’ to ‘bool’ in return
         operator bool () const { return m_logger; }
                                         ^~~~~~~~
Makefile:7896: recipe for target 'src/syncevo/src_syncevo_libsyncevolution_la-IdentityProvider.lo' failed