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conan install armadillo/10.6.2@ --build=armadillo --profile=/home/conan/w/BuildSingleReference/40159/1d9afb5a-16d3-481b-9c23-35dcd2ba37fb/profile.txt
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Release
compiler=gcc
compiler.libcxx=libstdc++11
compiler.version=7
os=Linux
os_build=Linux
[options]
armadillo:shared=False
[build_requires]
[env]

armadillo/10.6.2: Forced build from source
Installing package: armadillo/10.6.2
Requirements
    armadillo/10.6.2 from local cache - Cache
    hdf5/1.12.0 from 'conan-center' - Cache
    openblas/0.3.15 from 'conan-center' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    armadillo/10.6.2:ee43166fcd4c55de0adc47ee355eedb632fb77cf - Build
    hdf5/1.12.0:e671ab4fbe82957d3db7f418a83efebd88ee9ca5 - Cache
    openblas/0.3.15:f93d34643c88c224fda3561071907c785870b96b - Cache
    zlib/1.2.11:d50a0d523d98c15bb147b18fa7d203887c38be8b - Cache

Installing (downloading, building) binaries...
openblas/0.3.15: Already installed!
openblas/0.3.15: Setting OpenBLAS_HOME environment variable: /home/conan/w/BuildSingleReference/.conan/data/openblas/0.3.15/_/_/package/f93d34643c88c224fda3561071907c785870b96b
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
zlib/1.2.11: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
hdf5/1.12.0: Already installed!
[HOOK - conan-center.py] post_package_info(): [CMAKE FILE NOT IN BUILD FOLDERS (KB-H019)] OK
[HOOK - conan-center.py] post_package_info(): [LIBRARY DOES NOT EXIST (KB-H054)] OK
[HOOK - conan-center.py] pre_source(): [IMMUTABLE SOURCES (KB-H010)] OK
armadillo/10.6.2: Configuring sources in /home/conan/w/BuildSingleReference/.conan/data/armadillo/10.6.2/_/_/source
Waiting 5 seconds to retry...
armadillo/10.6.2: WARN: Build folder is dirty, removing it: /home/conan/w/BuildSingleReference/.conan/data/armadillo/10.6.2/_/_/build/ee43166fcd4c55de0adc47ee355eedb632fb77cf
armadillo/10.6.2: WARN: Trying to remove corrupted source folder
armadillo/10.6.2: WARN: This can take a while for big packages
ERROR: Error downloading file http://sourceforge.net/projects/arma/files/armadillo-10.6.2.tar.xz: 'HTTPSConnectionPool(host='sourceforge.net', port=443): Max retries exceeded with url: /projects/arma/files/armadillo-10.6.2.tar.xz (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1076)')))'
ERROR: armadillo/10.6.2: Error in source() method, line 234
	name=self.name, version=self.version
	ConanException: Error downloading file http://sourceforge.net/projects/arma/files/armadillo-10.6.2.tar.xz: 'HTTPSConnectionPool(host='sourceforge.net', port=443): Max retries exceeded with url: /projects/arma/files/armadillo-10.6.2.tar.xz (Caused by SSLError(SSLCertVerificationError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: certificate has expired (_ssl.c:1076)')))'