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conan install cpython/3.10.0rc1@ --build=cpython --profile=C:\J\w\BuildSingleReference@2/40708/078b785a-3dc8-4802-becc-abdc357903f1/profile.txt
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=Visual Studio
compiler.runtime=MD
compiler.version=16
os=Windows
os_build=Windows
[options]
cpython:shared=True
[build_requires]
[env]

cpython/3.10.0rc1: Forced build from source
Installing package: cpython/3.10.0rc1
Requirements
    bzip2/1.0.8 from 'conan-center' - Cache
    cpython/3.10.0rc1 from local cache - Cache
    expat/2.4.1 from 'conan-center' - Cache
    libffi/3.2.1 from 'conan-center' - Cache
    mpdecimal/2.5.0 from 'conan-center' - Cache
    openssl/1.1.1l from 'conan-center' - Cache
    sqlite3/3.36.0 from 'conan-center' - Cache
    tcl/8.6.10 from 'conan-center' - Cache
    tk/8.6.10 from 'conan-center' - Cache
    xz_utils/5.2.5 from 'conan-center' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    bzip2/1.0.8:d16a91eadaaf5829b928b12d2f836ff7680d3df5 - Cache
    cpython/3.10.0rc1:6b6a5b8333d2f388bcda263a58a797b73d8e6016 - Build
    expat/2.4.1:ce5788ba7e3bb7dc834e36b06df66c481f42c99a - Cache
    libffi/3.2.1:3fb49604f9c2f729b85ba3115852006824e72cab - Cache
    mpdecimal/2.5.0:fde233d6c5571e2f04d46ed2f6e49892ae02db15 - Cache
    openssl/1.1.1l:3fb49604f9c2f729b85ba3115852006824e72cab - Cache
    sqlite3/3.36.0:050fb3a4d3559ab088bce91739e61889c28839d1 - Cache
    tcl/8.6.10:d140711d95cc16a85766a8fc3a551dfafe84cf63 - Cache
    tk/8.6.10:a83c26cafc0ca6ecafe1e56354b237f951d15c1e - Cache
    xz_utils/5.2.5:3fb49604f9c2f729b85ba3115852006824e72cab - Cache
    zlib/1.2.11:3fb49604f9c2f729b85ba3115852006824e72cab - Cache

Installing (downloading, building) binaries...
bzip2/1.0.8: Already installed!
bzip2/1.0.8: Appending PATH environment variable: C:\J\w\BuildSingleReference@2\.conan\data\bzip2\1.0.8\_\_\package\d16a91eadaaf5829b928b12d2f836ff7680d3df5\bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
expat/2.4.1: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
libffi/3.2.1: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
mpdecimal/2.5.0: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
openssl/1.1.1l: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
sqlite3/3.36.0: Already installed!
sqlite3/3.36.0: Appending PATH env var with : C:\J\w\BuildSingleReference@2\.conan\data\sqlite3\3.36.0\_\_\package\050fb3a4d3559ab088bce91739e61889c28839d1\bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
xz_utils/5.2.5: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
zlib/1.2.11: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
tcl/8.6.10: Already installed!
tcl/8.6.10: Setting TCL_LIBRARY environment variable to C:\J\w\BuildSingleReference@2\.conan\data\tcl\8.6.10\_\_\package\d140711d95cc16a85766a8fc3a551dfafe84cf63\lib\tcl8.6
tcl/8.6.10: Setting TCL_ROOT environment variable to C:\J\w\BuildSingleReference@2\.conan\data\tcl\8.6.10\_\_\package\d140711d95cc16a85766a8fc3a551dfafe84cf63
tcl/8.6.10: Setting TCLSH environment variable to C:\J\w\BuildSingleReference@2\.conan\data\tcl\8.6.10\_\_\package\d140711d95cc16a85766a8fc3a551dfafe84cf63\bin\tclsh86tsx.exe
tcl/8.6.10: Adding PATH environment variable: C:\J\w\BuildSingleReference@2\.conan\data\tcl\8.6.10\_\_\package\d140711d95cc16a85766a8fc3a551dfafe84cf63\bin
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
tk/8.6.10: Already installed!
tk/8.6.10: Setting TK_LIBRARY environment variable: C:/J/w/BuildSingleReference@2/.conan/data/tk/8.6.10/_/_/package/a83c26cafc0ca6ecafe1e56354b237f951d15c1e/lib/tk8.6
tk/8.6.10: Setting TCL_ROOT environment variable: C:/J/w/BuildSingleReference@2/.conan/data/tk/8.6.10/_/_/package/a83c26cafc0ca6ecafe1e56354b237f951d15c1e
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
cpython/3.10.0rc1: Copying sources to build folder
cpython/3.10.0rc1: Building your package in C:\J\w\BuildSingleReference@2\.conan\data\cpython\3.10.0rc1\_\_\build\6b6a5b8333d2f388bcda263a58a797b73d8e6016
cpython/3.10.0rc1: Generator txt created conanbuildinfo.txt
cpython/3.10.0rc1: Generator 'MSBuildDeps' calling 'generate()'
*** The 'msbuild' generator is EXPERIMENTAL ***
cpython/3.10.0rc1: Aggregating env generators
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] 'fPIC' option not found
[HOOK - conan-center.py] pre_build(): [FPIC MANAGEMENT (KB-H007)] OK
cpython/3.10.0rc1: Calling build()
cpython/3.10.0rc1: Patching runtime
cpython/3.10.0rc1: Building 31 Visual Studio projects: ['pythoncore', 'python', '_ctypes', '_ssl', 'pyshellext', '_multiprocessing', '_zoneinfo', '_msi', 'winsound', '_decimal', 'unicodedata', '_freeze_importlib', 'venvlauncher', '_hashlib', '_bz2', '_lzma', 'pyexpat', '_overlapped', 'pythonw', 'select', '_elementtree', '_sqlite3', '_tkinter', 'pylauncher', '_queue', 'venvwlauncher', 'python3dll', 'pywlauncher', '_uuid', '_asyncio', '_socket']
cpython/3.10.0rc1: [1/31] Building project 'pythoncore'...
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** Visual Studio 2019 Developer Command Prompt v16.8.1
** Copyright (c) 2020 Microsoft Corporation
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cpython/3.10.0rc1: WARN: Build folder is dirty, removing it: C:\J\w\BuildSingleReference@2\.conan\data\cpython\3.10.0rc1\_\_\build\6b6a5b8333d2f388bcda263a58a797b73d8e6016
cpython/3.10.0rc1: WARN: Using the new toolchains and generators without specifying a build profile (e.g: -pr:b=default) is discouraged and might cause failures and unexpected behavior