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conan install libnet/1.2@ --build=libnet --profile=C:\J\w\BuildSingleReference@4/18812/85730058-805f-49e5-acbc-21b6019f7181/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=15
os=Windows
os_build=Windows
[options]
libnet:shared=False
[build_requires]
[env]

libnet/1.2: Forced build from source
Installing package: libnet/1.2
Requirements
    libnet/1.2 from local cache - Cache
Packages
    libnet/1.2:ce1f8ff23addde793223a2a82ed7fe355c57a589 - Build

Installing (downloading, building) binaries...
[HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK
libnet/1.2: Configuring sources in C:\J\w\BuildSingleReference@4\.conan\data\libnet\1.2\_\_\source

libnet/1.2: WARN: Build folder is dirty, removing it: C:\J\w\BuildSingleReference@4\.conan\data\libnet\1.2\_\_\build\ce1f8ff23addde793223a2a82ed7fe355c57a589
libnet/1.2: WARN: Trying to remove corrupted source folder
libnet/1.2: WARN: This can take a while for big packages
[HOOK - conan-center.py] post_source(): ERROR: [LIBCXX MANAGEMENT (KB-H011)] Can't detect C++ source files but recipe does not remove 'self.settings.compiler.libcxx' (https://github.com/conan-io/conan-center-index/blob/master/docs/error_knowledge_base.md#KB-H011) 
[HOOK - conan-center.py] post_source(): ERROR: [CPPSTD MANAGEMENT (KB-H022)] Can't detect C++ source files but recipe does not remove 'self.settings.compiler.cppstd' (https://github.com/conan-io/conan-center-index/blob/master/docs/error_knowledge_base.md#KB-H022) 
ERROR: [HOOK - conan-center.py] post_source(): Some checks failed running the hook, check the output