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conan install sml/1.1.4@ --build=sml --profile=C:\J\w\BuildSingleReference/14784/8d628652-e920-4724-9549-848f83314e86/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]
[build_requires]
[env]

sml/1.1.4: Forced build from source
Installing package: sml/1.1.4
Requirements
    sml/1.1.4 from local cache - Cache
Packages
    sml/1.1.4:2b6e26ab2d6455a1d35faba368342f882651680a - Build

Installing (downloading, building) binaries...
[HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK
sml/1.1.4: Configuring sources in C:\J\w\BuildSingleReference\.conan\data\sml\1.1.4\_\_\source

sml/1.1.4: WARN: Build folder is dirty, removing it: C:\J\w\BuildSingleReference\.conan\data\sml\1.1.4\_\_\build\2b6e26ab2d6455a1d35faba368342f882651680a
sml/1.1.4: WARN: Trying to remove corrupted source folder
sml/1.1.4: WARN: This can take a while for big packages
ERROR: sml/1.1.4: Error in source() method, line 45
	tools.patch(patch_file="patches/clang12.patch")
	FileNotFoundError: [Errno 2] No such file or directory: 'patches/clang12.patch'