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conan install sml/1.1.4@ --build=sml --profile=/home/conan/w/BuildSingleReference/14784/f73d2002-18d6-4fa0-9cf6-a305cbe9ebb4/profile.txt
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++
compiler.version=6
os=Linux
os_build=Linux
[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/1.1.4:7bddf08ed5b8053210255a5dfd0dabf0d79452a4 - Build

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

sml/1.1.4: WARN: Build folder is dirty, removing it: /home/conan/w/BuildSingleReference/.conan/data/sml/1.1.4/_/_/build/7bddf08ed5b8053210255a5dfd0dabf0d79452a4
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'