vigra fails to build with gcc 10:
Event | Plugins
PLUGIN_FINISH_UNIT | annobin: Generate final annotations
PLUGIN_START_UNIT | annobin: Generate global annotations
PLUGIN_ALL_PASSES_START | annobin: Generate per-function annotations
PLUGIN_ALL_PASSES_END | annobin: Register per-function end symbol
In file included from /usr/include/boost/python.hpp:55,
/usr/include/boost/python/raw_function.hpp: In member function 'PyObject* boost::python::detail::raw_dispatcher<F>::operator()(PyObject*, PyObject*)':
/usr/include/boost/python/raw_function.hpp:33:76: internal compiler error: in nothrow_spec_p, at cp/except.c:1247
33 | , keywords ? dict(borrowed_reference(keywords)) : dict()
This is blocked by bz1794094 and blocks the Python 3.9 rebuild of vigra.
Closing as this looks like a compiler or hardware problem, and subsequent builds are ok.