********************************************************************************
conan install b2/4.6.1@ --build=b2 --profile=/home/conan/w/BuildSingleReference/41559/74ab7515-6305-43f7-94bc-c6ee1475d729/profile.txt
********************************************************************************
Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=5
os=Linux
os_build=Linux
[options]
[build_requires]
[env]

b2/4.6.1: Forced build from source
Installing package: b2/4.6.1
Requirements
    b2/4.6.1 from local cache - Cache
Packages
    b2/4.6.1:4db1be536558d833e52e862fd84d64d75c2b3656 - Build

Installing (downloading, building) binaries...
[HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK
b2/4.6.1: Configuring sources in /home/conan/w/BuildSingleReference/.conan/data/b2/4.6.1/_/_/source
b2/4.6.1: WARN: Build folder is dirty, removing it: /home/conan/w/BuildSingleReference/.conan/data/b2/4.6.1/_/_/build/4db1be536558d833e52e862fd84d64d75c2b3656
b2/4.6.1: WARN: Trying to remove corrupted source folder
b2/4.6.1: WARN: This can take a while for big packages
ERROR: b2/4.6.1: Error in source() method, line 55
	tools.get(**self.conan_data["sources"][self.version])
	KeyError: 'sources'