[package] boost/1.75.0: Boost fails to build/install with option "i18n_backend=icu"

[tjwrona]

Package and Environment Details (include every applicable attribute)

• Package Name/Version: boost/1.75.0
• Operating System+version: Windows 10
• Compiler+version: Visual Studio 16.9.0 2019 Preview 2.0
• Conan version: conan 1.29.2
• Python version: Python 3.7.1

Steps to reproduce (Include if Applicable)

Full source of the code I am working on is located here:
https://github.com/tnt-coders/cpp-xsd/tree/f1b6f959492e2b95024b4f4743f5098acdcfab4a

This project can simply be opened in VS2019 and built from within the IDE and all dependencies should be fetched automatically during CMake generation (using cmake-conan https://github.com/conan-io/cmake-conan)

Boost is included in the conanfile as follows:

build_requires = ("boost/1.75.0")
default_options = {"boost:i18n_backend": "icu"}

At the start of the build it looks like it spits out the conan profile info:

1> [CMake] Configuration:
1> [CMake] [settings]
1> [CMake] arch=x86_64
1> [CMake] arch_build=x86_64
1> [CMake] build_type=Debug
1> [CMake] compiler=Visual Studio
1> [CMake] compiler.cppstd=17
1> [CMake] compiler.runtime=MDd
1> [CMake] compiler.version=16
1> [CMake] os=Windows
1> [CMake] os_build=Windows
1> [CMake] [options]
1> [CMake] [build_requires]
1> [CMake] [env]

An error occurs during the last part of the "ICU" build:

1> [CMake] icu/68.1: make[0]: Making `all' in `data'
1> [CMake] icu/68.1: mkdir ./out/build
1> [CMake] icu/68.1: mkdir ./out/build/icudt68l
1> [CMake] icu/68.1: Unpacking ../../source/data/in/icudt68l.dat and generating out/tmp/icudata.lst (list of data files)
1> [CMake] icu/68.1: make[0]: Making `all' in `ThisIsATest'
1> [CMake] icu/68.1: /bin/sh: line 10: cd: ThisIsATest: No such file or directory
1> [CMake] icu/68.1: make: *** [Makefile:153: all-recursive] Error 1
1> [CMake] icu/68.1: icu/68.1: 
1> [CMake] ERROR: Package 'fe49e44f647bd3bafc9ae07ede6a7bfcf148996c' build failed
1> [CMake] icu/68.1: WARN: Build folder C:\Users\tjwro\.conan\data\icu\68.1\_\_\build\fe49e44f647bd3bafc9ae07ede6a7bfcf148996c
1> [CMake] ERROR: icu/68.1: Error in build() method, line 101
1> [CMake] 	self.run(command, win_bash=tools.os_info.is_windows)
1> [CMake] 	ConanException: Error 2 while executing make --silent -j 8
1> [CMake] CMake Error at out/build/x64-Debug (default)/conan.cmake:402 (message):
1> [CMake]   Conan install failed='1'
1> [CMake] Call Stack (most recent call first):
1> [CMake]   out/build/x64-Debug (default)/conan.cmake:497 (conan_cmake_install)
1> [CMake]   out/build/x64-Debug (default)/_deps/cmakemodules-src/modules/tnt/project/Project.cmake:139 (conan_cmake_run)
1> [CMake]   CMakeLists.txt:21 (tnt_project_ConanInstall)
1> [CMake] -- Configuring incomplete, errors occurred!
1> [CMake] See also "C:/Users/tjwro/Documents/GitHub/cpp-xsd/out/build/x64-Debug (default)/CMakeFiles/CMakeOutput.log".