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conan install gn/cci.20210429@#5fadb965c8c8b969883a45a06733887c --build=gn -pr /home/conan/w/prod-v1/bsr/40451/ebbcd/profile_linux_7_libstdcpp11_gcc_release_64..txt -c tools.system.package_manager:mode=install -c tools.system.package_manager:sudo=True
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Auto detecting your dev setup to initialize the default profile (/home/conan/w/prod-v1/bsr/40451/aceab/.conan/profiles/default)
CC and CXX: /usr/bin/gcc, /usr/bin/g++ 
Found gcc 7
gcc>=5, using the major as version

************************* WARNING: GCC OLD ABI COMPATIBILITY ***********************
 
Conan detected a GCC version > 5 but has adjusted the 'compiler.libcxx' setting to
'libstdc++' for backwards compatibility.
Your compiler is likely using the new CXX11 ABI by default (libstdc++11).

If you want Conan to use the new ABI for the default profile, run:

    $ conan profile update settings.compiler.libcxx=libstdc++11 default

Or edit '/home/conan/w/prod-v1/bsr/40451/aceab/.conan/profiles/default' and set compiler.libcxx=libstdc++11

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Default settings
	os=Linux
	os_build=Linux
	arch=x86_64
	arch_build=x86_64
	compiler=gcc
	compiler.version=7
	compiler.libcxx=libstdc++
	build_type=Release
*** You can change them in /home/conan/w/prod-v1/bsr/40451/aceab/.conan/profiles/default ***
*** Or override with -s compiler='other' -s ...s***


Configuration:
[settings]
arch=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=7
os=Linux
[options]
[build_requires]
[env]
[conf]
tools.system.package_manager:mode=install
tools.system.package_manager:sudo=True

gn/cci.20210429: Forced build from source
ninja/1.11.1: Not found in local cache, looking in remotes...
ninja/1.11.1: Trying with 'conan-center'...
Downloading conanmanifest.txt
Downloading conanfile.py
Downloading conan_export.tgz
ninja/1.11.1: Downloaded recipe revision 77587f8c8318662ac8e5a7867eb4be21
Installing package: gn/cci.20210429
Requirements
    gn/cci.20210429 from local cache - Cache
Packages
    gn/cci.20210429:24647d9fe8ec489125dfbae4b3ebefaf7581674c - Build
Build requirements
    ninja/1.11.1 from 'conan-center' - Downloaded
Build requirements packages
    ninja/1.11.1:24647d9fe8ec489125dfbae4b3ebefaf7581674c - Download

Installing (downloading, building) binaries...
ninja/1.11.1: Retrieving package 24647d9fe8ec489125dfbae4b3ebefaf7581674c from remote 'conan-center' 
Downloading conanmanifest.txt
Downloading conaninfo.txt
Downloading conan_package.tgz
ninja/1.11.1: Package installed 24647d9fe8ec489125dfbae4b3ebefaf7581674c
ninja/1.11.1: Downloaded package revision e4a9f8b7c5c614f750ecc9bdc6341a01
gn/cci.20210429: Applying build-requirement: ninja/1.11.1
[HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK
gn/cci.20210429: Configuring sources in /home/conan/w/prod-v1/bsr/40451/aceab/.conan/data/gn/cci.20210429/_/_/source/src
gn/cci.20210429: 
[HOOK - conan-center.py] post_source(): [LIBCXX MANAGEMENT (KB-H011)] OK
[HOOK - conan-center.py] post_source(): [CPPSTD MANAGEMENT (KB-H022)] OK
[HOOK - conan-center.py] post_source(): [SHORT_PATHS USAGE (KB-H066)] OK
gn/cci.20210429: Copying sources to build folder
gn/cci.20210429: Building your package in /home/conan/w/prod-v1/bsr/40451/aceab/.conan/data/gn/cci.20210429/_/_/build/24647d9fe8ec489125dfbae4b3ebefaf7581674c
gn/cci.20210429: Generator txt created conanbuildinfo.txt
gn/cci.20210429: Calling generate()
gn/cci.20210429: 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
gn/cci.20210429: Calling build()
gn/cci.20210429: 
gn/cci.20210429: ERROR: Package '24647d9fe8ec489125dfbae4b3ebefaf7581674c' build failed
gn/cci.20210429: WARN: Build folder /home/conan/w/prod-v1/bsr/40451/aceab/.conan/data/gn/cci.20210429/_/_/build/24647d9fe8ec489125dfbae4b3ebefaf7581674c/build-release
ERROR: gn/cci.20210429: Error in build() method, line 111
	os.environ["CXX"] = compilers_by_conf.get("cpp") or VirtualBuildEnv(self).vars().get("CXX")
	TypeError: str expected, not NoneType