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conan install bison/3.7.1@#2df02e54a4b6feeba8369364c6aa2178 --build=bison -pr /home/conan/w/prod/BuildSingleReference/79868/263ec399-4dea-43cf-baa6-34a0d7b1047c/profile_linux_5_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/BuildSingleReference/.conan/profiles/default)
CC and CXX: /usr/bin/gcc, /usr/bin/g++ 
Found gcc 5.4
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/BuildSingleReference/.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=5
	compiler.libcxx=libstdc++
	build_type=Release
*** You can change them in /home/conan/w/prod/BuildSingleReference/.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=5
os=Linux
[options]
[build_requires]
[env]
[conf]
tools.system.package_manager:mode=install
tools.system.package_manager:sudo=True

m4/1.4.19: Not found in local cache, looking in remotes...
m4/1.4.19: Trying with 'conan-center'...
Downloading conanmanifest.txt
Downloading conanfile.py
Downloading conan_export.tgz
m4/1.4.19: Downloaded recipe revision d9741f0aa0ac45e6b54a59f79e32ac81
bison/3.7.1: Forced build from source
flex/2.6.4: Not found in local cache, looking in remotes...
flex/2.6.4: Trying with 'conan-center'...
Downloading conanmanifest.txt
Downloading conanfile.py
Downloading conan_export.tgz
flex/2.6.4: Downloaded recipe revision e4696e6333f2d486e7073de6a9559712
Installing package: bison/3.7.1
Requirements
    bison/3.7.1 from local cache - Cache
    m4/1.4.19 from 'conan-center' - Downloaded
Packages
    bison/3.7.1:d4e2c4fda75c443daaf5f26224d0044231fb93f3 - Build
    m4/1.4.19:24647d9fe8ec489125dfbae4b3ebefaf7581674c - Download
Build requirements
    flex/2.6.4 from 'conan-center' - Downloaded
Build requirements packages
    flex/2.6.4:d4e2c4fda75c443daaf5f26224d0044231fb93f3 - Download

Installing (downloading, building) binaries...
m4/1.4.19: Retrieving package 24647d9fe8ec489125dfbae4b3ebefaf7581674c from remote 'conan-center' 
Downloading conanmanifest.txt
Downloading conaninfo.txt
Downloading conan_package.tgz
m4/1.4.19: Package installed 24647d9fe8ec489125dfbae4b3ebefaf7581674c
m4/1.4.19: Downloaded package revision 9d688c9ef4c12a69e6f0824ebc6848bb
flex/2.6.4: Retrieving package d4e2c4fda75c443daaf5f26224d0044231fb93f3 from remote 'conan-center' 
Downloading conanmanifest.txt
Downloading conaninfo.txt
Downloading conan_package.tgz
flex/2.6.4: Package installed d4e2c4fda75c443daaf5f26224d0044231fb93f3
flex/2.6.4: Downloaded package revision 4d19984729c3933e2ad93991a7bf6b6a
m4/1.4.19: Appending PATH environment variable: /home/conan/w/prod/BuildSingleReference/.conan/data/m4/1.4.19/_/_/package/24647d9fe8ec489125dfbae4b3ebefaf7581674c/bin
m4/1.4.19: Setting M4 environment variable: /home/conan/w/prod/BuildSingleReference/.conan/data/m4/1.4.19/_/_/package/24647d9fe8ec489125dfbae4b3ebefaf7581674c/bin/m4
flex/2.6.4: Appending PATH environment variable: /home/conan/w/prod/BuildSingleReference/.conan/data/flex/2.6.4/_/_/package/d4e2c4fda75c443daaf5f26224d0044231fb93f3/bin
flex/2.6.4: Setting LEX environment variable: /home/conan/w/prod/BuildSingleReference/.conan/data/flex/2.6.4/_/_/package/d4e2c4fda75c443daaf5f26224d0044231fb93f3/bin/flex
bison/3.7.1: Applying build-requirement: flex/2.6.4
[HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK
bison/3.7.1: Configuring sources in /home/conan/w/prod/BuildSingleReference/.conan/data/bison/3.7.1/_/_/source
ERROR: bison/3.7.1: Error in source() method, line 55
	tools.files.get(self, **self.conan_data["sources"][self.version],
	AttributeError: module 'conans.tools' has no attribute 'files'