fix ci error

Author: SSDGADsss

appveyor.yml

@@ -2,14 +2,14 @@ version: 7.0.0.{build}
 
 branches:
   only:
-  - cpp_master
+    - cpp_master
 
 environment:
   matrix:
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
       cpp11: -DMSGPACK_CXX11=ON
       msvc: '"Visual Studio 14 2015"'
-      boost_prefix: C:\Libraries\boost_1_69_0
+      boost_prefix: C:\Libraries\boost_1_86_0
       boost_subdir: lib32-msvc-14.0
 build_script:
   - ps: |
@@ -42,7 +42,7 @@ build_script:
           -D MSGPACK_BUILD_EXAMPLES=ON `
           -D MSGPACK_BUILD_TESTS=ON `
           -D CMAKE_EXE_LINKER_FLAGS=/LIBPATH:"$env:boost_prefix\$env:boost_subdir" `
-          -D CMAKE_PREFIX_PATH="$env:boost_prefix;$env:APPVEYOR_BUILD_FOLDER\zlib-1.3.1\prefix" `
+          -D CMAKE_PREFIX_PATH="$env:boost_prefix\$env:boost_subdir\cmake\Boost-1.86.0;$env:APPVEYOR_BUILD_FOLDER\zlib-1.3.1\prefix" `
           -D CMAKE_INSTALL_PREFIX="$env:APPVEYOR_BUILD_FOLDER\prefix" `
           -D CMAKE_CXX_FLAGS="/D_VARIADIC_MAX=10 /EHsc /DBOOST_ALL_DYN_LINK" `
           ..
@@ -52,5 +52,5 @@ build_script:
       if ($LastExitCode -ne 0) { exit $LastExitCode }
 
 test_script:
-- set PATH=%PATH%;%APPVEYOR_BUILD_FOLDER%\zlib-1.3.1\build\Release;%APPVEYOR_BUILD_FOLDER%\build\release;%boost_prefix%\%boost_subdir%
-- ctest -VV -C Release
+  - set PATH=%PATH%;%APPVEYOR_BUILD_FOLDER%\zlib-1.3.1\build\Release;%APPVEYOR_BUILD_FOLDER%\build\release;%boost_prefix%\%boost_subdir%
+  - ctest -VV -C Release

test-install/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.1 FATAL_ERROR)
+cmake_minimum_required(VERSION 3.5...4.0)
 
 project(test-install LANGUAGES CXX)