message: Ignore `-Wshadow` in boost include
  Summary: Hide the `-Wshadow` warning. We cannot fix boost code, anyways.
diff: #ifdef __APPLE__
  #define BOOST_STACKTRACE_GNU_SOURCE_NOT_REQUIRED
  #endif
  +#pragma GCC diagnostic push
  +#pragma GCC diagnostic ignored "-Wshadow"
  #include <boost/stacktrace.hpp>
  +#pragma GCC diagnostic pop
  namespace {
  void crash_backtrace() {
  