CMake Warning at scripts/cmake/vcpkg_buildpath_length_warning.cmake:4 (message):
  boost-system's buildsystem uses very long paths and may fail on your
  system.

  We recommend moving vcpkg to a short path such as 'C:\src\vcpkg' or using
  the subst command.
Call Stack (most recent call first):
  ports/boost-system/portfile.cmake:3 (vcpkg_buildpath_length_warning)
  scripts/ports.cmake:146 (include)


-- Downloading https://github.com/boostorg/system/archive/boost-1.79.0.tar.gz -> boostorg-system-boost-1.79.0.tar.gz...
-- Extracting source D:/a/1/s/externals/vcpkg/downloads/boostorg-system-boost-1.79.0.tar.gz
-- Using source at D:/a/1/s/externals/vcpkg/buildtrees/boost-system/src/ost-1.79.0-fa1427021e.clean
-- Found external ninja('1.10.2').
-- Getting CMake variables for x64-windows
-- Configuring x64-windows
-- Building x64-windows-dbg
-- Building x64-windows-rel
-- Copying headers
-- Copying headers done
-- Installing: D:/a/1/s/externals/vcpkg/packages/boost-system_x64-windows/share/boost-system/usage
-- Installing: D:/a/1/s/externals/vcpkg/packages/boost-system_x64-windows/share/boost-system/copyright