Hi everyone, Today after doing a `git pull --rebase` on modular Boost, b2 stopped working for me. I keep getting the following error. Can someone help me figure out what this is? Regards, &rzej C:/source/modular-boost/tools/build/src/build\feature.jam:139: in feature.feature from module feature error: unknown attributes: hidden error: in feature declaration: error: feature "deduced-address-model" : "32" "64" : "propagated" "optional" "composite" "hidden" C:/source/modular-boost\boostcpp.jam:570: in load from module boostcpp C:/source/modular-boost/tools/build/src/kernel\modules.jam:289: in modules.import from module modules C:/source/modular-boost/tools/build/src/build\project.jam:1024: in import from module Jamfile ..\..\..\Jamroot:124: in modules.load from module Jamfile C:/source/modular-boost/tools/build/src/build\project.jam:311: in load-jamfile from module project C:/source/modular-boost/tools/build/src/build\project.jam:64: in load from module project C:/source/modular-boost/tools/build/src/build\project.jam:113: in load-parent from module project C:/source/modular-boost/tools/build/src/build\project.jam:449: in initialize from module project C:/source/modular-boost/tools/build/src/build\project.jam:301: in load-jamfile from module project C:/source/modular-boost/tools/build/src/build\project.jam:64: in load from module project C:/source/modular-boost/tools/build/src/build\project.jam:113: in load-parent from module project C:/source/modular-boost/tools/build/src/build\project.jam:449: in initialize from module project C:/source/modular-boost/tools/build/src/build\project.jam:301: in load-jamfile from module project C:/source/modular-boost/tools/build/src/build\project.jam:64: in load from module project C:/source/modular-boost/tools/build/src/build\project.jam:145: in project.find from module project C:/source/modular-boost/tools/build/src\build-system.jam:535: in load from module build-system C:\source\modular-boost\tools\build\src/kernel\modules.jam:289: in import from module modules C:\source\modular-boost\tools\build\src/kernel/bootstrap.jam:139: in boost-build from module C:\source\modular-boost\boost-build.jam:17: in module scope from module