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conan install libpqxx/7.3.0@ --profile=/Users/jenkins/w/BuildSingleReference@3/1602/7a3ef20f-b00b-4894-bf3d-23aa17139654/profile.txt --build=libpqxx
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=12.0
os=Macos
os_build=Macos
[options]
libpqxx:shared=True
[build_requires]
[env]

libpqxx/7.3.0: Forced build from source
Installing package: libpqxx/7.3.0
Requirements
    libpq/12.2 from 'conan-center' - Cache
    libpqxx/7.3.0 from 'conan-upstream' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    libpq/12.2:6615b55b95ff43a02a83c3955d071acd71dad079 - Missing
    libpqxx/7.3.0:5ba9e9f65ffabbd449e552dbd9f25f2c184943d9 - Build
    zlib/1.2.11:647afeb69d3b0a2d3d316e80b24d38c714cc6900 - Download

Installing (downloading, building) binaries...

ERROR: Missing binary: libpq/12.2:6615b55b95ff43a02a83c3955d071acd71dad079
libpq/12.2: WARN: Can't find a 'libpq/12.2' package for the specified settings, options and dependencies:
- Settings: arch=x86_64, build_type=Release, compiler=apple-clang, compiler.version=12.0, os=Macos
- Options: disable_rpath=False, fPIC=True, shared=False, with_openssl=False, with_zlib=True, zlib:fPIC=True, zlib:minizip=False, zlib:shared=False
- Dependencies: zlib/1.2.11
- Requirements: zlib/1.Y.Z
- Package ID: 6615b55b95ff43a02a83c3955d071acd71dad079

ERROR: Missing prebuilt package for 'libpq/12.2'
Try to build from sources with '--build=libpq'
Use 'conan search <reference> --table table.html'
Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'