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conan install boost/1.71.0@ --build=boost --profile:host=/Users/jenkins/w/BuildSingleReference/12940/dfec5ce4-78f5-47b2-b258-9a00a1c7253e/profile_host.txt --profile:build=default
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Configuration (profile_host):
[settings]
arch=armv8
build_type=Debug
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=12.0
os=Macos
[options]
boost:shared=False
[build_requires]
[env]

Configuration (profile_build):
[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]
[build_requires]
[env]

boost/1.71.0: Forced build from source
Installing package: boost/1.71.0
Requirements
    boost/1.71.0 from local cache - Cache
    bzip2/1.0.8 from 'conan-center' - Cache
    libbacktrace/cci.20210118 from 'conan-center' - Cache
    libiconv/1.16 from 'conan-center' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    boost/1.71.0:cfaaa23640ebc32f1f1e49c4bb01b7cd2c59c491 - Build
    bzip2/1.0.8:1eebc1ca972faabad362af04f3107014f151fa5d - Download
    libbacktrace/cci.20210118:baf78352c82543f997ec32332829b6fa30714eaa - Missing
    libiconv/1.16:baf78352c82543f997ec32332829b6fa30714eaa - Download
    zlib/1.2.11:baf78352c82543f997ec32332829b6fa30714eaa - Download
Build requirements
    b2/4.5.0 from 'conan-center' - Cache
Build requirements packages
    b2/4.5.0:46f53f156846659bf39ad6675fa0ee8156e859fe - Download

Cross-build from 'Macos:x86_64' to 'Macos:armv8'
Installing (downloading, building) binaries...

ERROR: Missing binary: libbacktrace/cci.20210118:baf78352c82543f997ec32332829b6fa30714eaa
libbacktrace/cci.20210118: WARN: Can't find a 'libbacktrace/cci.20210118' package for the specified settings, options and dependencies:
- Settings: arch=armv8, build_type=Debug, compiler=apple-clang, compiler.version=12.0, os=Macos
- Options: fPIC=True, shared=False
- Dependencies: 
- Requirements: 
- Package ID: baf78352c82543f997ec32332829b6fa30714eaa

ERROR: Missing prebuilt package for 'libbacktrace/cci.20210118'
Try to build from sources with '--build=libbacktrace'
Use 'conan search <reference> --table table.html'
Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'