message: try to fix clang version
diff: @@ -80,10 +80,10 @@ matrix:
  #build settings
  - build_type=Release
  - CXX_STANDARD=17
  - - LDFLAGS="-fuse-ld=lld"
  + - LDFLAGS="-fuse-ld=lld-10"
  addons:
  apt:
  - packages: ['clang-10', 'clang++-10', 'clang-format-10', 'clang-tools-9', 'cmake']
  + packages: ['clang-10', 'clang++-10', 'clang-format-10', 'clang-tools-10', 'cmake']
  - name: "mac"
  os: osx
  