I am trying to to install pyopenssl with:
    sage -i openssl
    sage -i -f python2
    sage -i pyopenssl
but the last step fails. This seems to be a general problem with Sage 7.5.1 
under Mac OS X 10.2.1 since this was also reported to me by someone else 
with the same configuration. The above steps worked with Sage 7.4 a couple 
of months ago.

...
sage-logger -p 'sage --pip install pyopenssl' 
/Applications/SageMath-7.5.1.app/Contents/Resources/sage/logs/pkgs/pyopenssl.log
[pyopenssl] Collecting pyopenssl
[pyopenssl]   Using cached pyOpenSSL-16.2.0-py2.py3-none-any.whl
[pyopenssl] Collecting cryptography>=1.3.4 (from pyopenssl)
[pyopenssl]   Downloading cryptography-1.7.2.tar.gz (420kB)
[pyopenssl] Requirement already satisfied (use --upgrade to upgrade): 
six>=1.5.2 in 
/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib/python2.7/site-packages
 
(from pyopenssl)
[pyopenssl] Collecting idna>=2.0 (from cryptography>=1.3.4->pyopenssl)
[pyopenssl]   Downloading idna-2.2-py2.py3-none-any.whl (55kB)
[pyopenssl] Collecting pyasn1>=0.1.8 (from cryptography>=1.3.4->pyopenssl)
[pyopenssl]   Downloading pyasn1-0.2.2-py2.py3-none-any.whl (51kB)
[pyopenssl] Requirement already satisfied (use --upgrade to upgrade): 
setuptools>=11.3 in 
/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib/python2.7/site-packages
 
(from cryptography>=1.3.4->pyopenssl)
[pyopenssl] Collecting enum34 (from cryptography>=1.3.4->pyopenssl)
[pyopenssl]   Using cached enum34-1.1.6-py2-none-any.whl
[pyopenssl] Collecting ipaddress (from cryptography>=1.3.4->pyopenssl)
[pyopenssl]   Downloading ipaddress-1.0.18-py2-none-any.whl
[pyopenssl] Collecting cffi>=1.4.1 (from cryptography>=1.3.4->pyopenssl)
[pyopenssl]   Using cached cffi-1.9.1-cp27-cp27mu-macosx_10_10_x86_64.whl
[pyopenssl] Collecting pycparser (from 
cffi>=1.4.1->cryptography>=1.3.4->pyopenssl)
[pyopenssl]   Using cached pycparser-2.17.tar.gz
[pyopenssl] Installing collected packages: idna, pyasn1, enum34, ipaddress, 
pycparser, cffi, cryptography, pyopenssl
[pyopenssl]   Running setup.py install for pycparser: started
[pyopenssl]     Running setup.py install for pycparser: finished with 
status 'done'
[pyopenssl]   Running setup.py install for cryptography: started
[pyopenssl]     Running setup.py install for cryptography: finished with 
status 'error'
[pyopenssl]     Complete output from command 
/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/bin/python 
-u -c "import setuptools, 
tokenize;__file__='/private/var/folders/qf/wr6_n5s56m780kv130nznmlc0000gn/T/pip-build-YqN6_t/cryptography/setup.py';exec(compile(getattr(tokenize,
 
'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" 
install --record 
/var/folders/qf/wr6_n5s56m780kv130nznmlc0000gn/T/pip-_Mvdak-record/install-record.txt
 
--single-version-externally-managed --compile:
[pyopenssl]     running install
[pyopenssl]     running build
[pyopenssl]     running build_py
[pyopenssl]     creating build
[pyopenssl]     creating build/lib.macosx-10.9-x86_64-2.7
[pyopenssl]     creating build/lib.macosx-10.9-x86_64-2.7/cryptography
[pyopenssl]     copying src/cryptography/__about__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography
[pyopenssl]     copying src/cryptography/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography
[pyopenssl]     copying src/cryptography/exceptions.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography
[pyopenssl]     copying src/cryptography/fernet.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography
[pyopenssl]     copying src/cryptography/utils.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat
[pyopenssl]     copying src/cryptography/hazmat/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat
[pyopenssl]     creating build/lib.macosx-10.9-x86_64-2.7/cryptography/x509
[pyopenssl]     copying src/cryptography/x509/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/x509
[pyopenssl]     copying src/cryptography/x509/base.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/x509
[pyopenssl]     copying src/cryptography/x509/extensions.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/x509
[pyopenssl]     copying src/cryptography/x509/general_name.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/x509
[pyopenssl]     copying src/cryptography/x509/name.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/x509
[pyopenssl]     copying src/cryptography/x509/oid.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/x509
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends
[pyopenssl]     copying src/cryptography/hazmat/backends/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends
[pyopenssl]     copying src/cryptography/hazmat/backends/interfaces.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends
[pyopenssl]     copying src/cryptography/hazmat/backends/multibackend.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings
[pyopenssl]     copying src/cryptography/hazmat/bindings/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives
[pyopenssl]     copying src/cryptography/hazmat/primitives/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives
[pyopenssl]     copying src/cryptography/hazmat/primitives/cmac.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives
[pyopenssl]     copying src/cryptography/hazmat/primitives/constant_time.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives
[pyopenssl]     copying src/cryptography/hazmat/primitives/hashes.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives
[pyopenssl]     copying src/cryptography/hazmat/primitives/hmac.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives
[pyopenssl]     copying src/cryptography/hazmat/primitives/keywrap.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives
[pyopenssl]     copying src/cryptography/hazmat/primitives/padding.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives
[pyopenssl]     copying src/cryptography/hazmat/primitives/serialization.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/commoncrypto
[pyopenssl]     copying 
src/cryptography/hazmat/backends/commoncrypto/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/commoncrypto
[pyopenssl]     copying 
src/cryptography/hazmat/backends/commoncrypto/backend.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/commoncrypto
[pyopenssl]     copying 
src/cryptography/hazmat/backends/commoncrypto/ciphers.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/commoncrypto
[pyopenssl]     copying 
src/cryptography/hazmat/backends/commoncrypto/hashes.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/commoncrypto
[pyopenssl]     copying 
src/cryptography/hazmat/backends/commoncrypto/hmac.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/commoncrypto
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying 
src/cryptography/hazmat/backends/openssl/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/backend.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/ciphers.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/cmac.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying 
src/cryptography/hazmat/backends/openssl/decode_asn1.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/dh.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/dsa.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/ec.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying 
src/cryptography/hazmat/backends/openssl/encode_asn1.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/hashes.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/hmac.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/rsa.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/utils.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     copying src/cryptography/hazmat/backends/openssl/x509.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/backends/openssl
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings/commoncrypto
[pyopenssl]     copying 
src/cryptography/hazmat/bindings/commoncrypto/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings/commoncrypto
[pyopenssl]     copying 
src/cryptography/hazmat/bindings/commoncrypto/binding.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings/commoncrypto
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings/openssl
[pyopenssl]     copying 
src/cryptography/hazmat/bindings/openssl/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings/openssl
[pyopenssl]     copying 
src/cryptography/hazmat/bindings/openssl/_conditional.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings/openssl
[pyopenssl]     copying src/cryptography/hazmat/bindings/openssl/binding.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings/openssl
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/asymmetric
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/asymmetric/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/asymmetric
[pyopenssl]     copying src/cryptography/hazmat/primitives/asymmetric/dh.py 
-> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/asymmetric
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/asymmetric/dsa.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/asymmetric
[pyopenssl]     copying src/cryptography/hazmat/primitives/asymmetric/ec.py 
-> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/asymmetric
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/asymmetric/padding.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/asymmetric
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/asymmetric/rsa.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/asymmetric
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/asymmetric/utils.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/asymmetric
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/ciphers
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/ciphers/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/ciphers
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/ciphers/algorithms.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/ciphers
[pyopenssl]     copying src/cryptography/hazmat/primitives/ciphers/base.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/ciphers
[pyopenssl]     copying src/cryptography/hazmat/primitives/ciphers/modes.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/ciphers
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/interfaces
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/interfaces/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/interfaces
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/kdf
[pyopenssl]     copying src/cryptography/hazmat/primitives/kdf/__init__.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/kdf
[pyopenssl]     copying src/cryptography/hazmat/primitives/kdf/concatkdf.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/kdf
[pyopenssl]     copying src/cryptography/hazmat/primitives/kdf/hkdf.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/kdf
[pyopenssl]     copying src/cryptography/hazmat/primitives/kdf/kbkdf.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/kdf
[pyopenssl]     copying src/cryptography/hazmat/primitives/kdf/pbkdf2.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/kdf
[pyopenssl]     copying src/cryptography/hazmat/primitives/kdf/scrypt.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/kdf
[pyopenssl]     copying src/cryptography/hazmat/primitives/kdf/x963kdf.py 
-> build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/kdf
[pyopenssl]     creating 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/twofactor
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/twofactor/__init__.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/twofactor
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/twofactor/hotp.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/twofactor
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/twofactor/totp.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/twofactor
[pyopenssl]     copying 
src/cryptography/hazmat/primitives/twofactor/utils.py -> 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/primitives/twofactor
[pyopenssl]     running egg_info
[pyopenssl]     writing requirements to 
src/cryptography.egg-info/requires.txt
[pyopenssl]     writing src/cryptography.egg-info/PKG-INFO
[pyopenssl]     writing top-level names to 
src/cryptography.egg-info/top_level.txt
[pyopenssl]     writing dependency_links to 
src/cryptography.egg-info/dependency_links.txt
[pyopenssl]     writing entry points to 
src/cryptography.egg-info/entry_points.txt
[pyopenssl]     warning: manifest_maker: standard file '-c' not found
[pyopenssl]
[pyopenssl]     reading manifest file 
'src/cryptography.egg-info/SOURCES.txt'
[pyopenssl]     reading manifest template 'MANIFEST.in'
[pyopenssl]     no previously-included directories found matching 
'docs/_build'
[pyopenssl]     warning: no previously-included files matching '*' found 
under directory 'vectors'
[pyopenssl]     writing manifest file 
'src/cryptography.egg-info/SOURCES.txt'
[pyopenssl]     running build_ext
[pyopenssl]     generating cffi module 
'build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c'
[pyopenssl]     creating build/temp.macosx-10.9-x86_64-2.7
[pyopenssl]     generating cffi module 
'build/temp.macosx-10.9-x86_64-2.7/_padding.c'
[pyopenssl]     generating cffi module 
'build/temp.macosx-10.9-x86_64-2.7/_constant_time.c'
[pyopenssl]     generating cffi module 
'build/temp.macosx-10.9-x86_64-2.7/_openssl.c'
[pyopenssl]     building '_openssl' extension
[pyopenssl]     creating build/temp.macosx-10.9-x86_64-2.7/build
[pyopenssl]     creating 
build/temp.macosx-10.9-x86_64-2.7/build/temp.macosx-10.9-x86_64-2.7
[pyopenssl]     gcc -fno-strict-aliasing 
-I/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/var/tmp/sage/build/python2-2.7.13.p0/include
 
-DNDEBUG -g -fwrapv -O3 -Wall -Wno-unused 
-I/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/include/python2.7
 
-c build/temp.macosx-10.9-x86_64-2.7/_openssl.c -o 
build/temp.macosx-10.9-x86_64-2.7/build/temp.macosx-10.9-x86_64-2.7/_openssl.o
[pyopenssl]     gcc -bundle -undefined dynamic_lookup 
-L/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
-Wl,-rpath,/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
-L/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
-Wl,-rpath,/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
build/temp.macosx-10.9-x86_64-2.7/build/temp.macosx-10.9-x86_64-2.7/_openssl.o 
-L/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib -lssl 
-lcrypto -o 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings/_openssl.so
[pyopenssl]     building '_constant_time' extension
[pyopenssl]     gcc -fno-strict-aliasing 
-I/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/var/tmp/sage/build/python2-2.7.13.p0/include
 
-DNDEBUG -g -fwrapv -O3 -Wall -Wno-unused 
-I/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/include/python2.7
 
-c build/temp.macosx-10.9-x86_64-2.7/_constant_time.c -o 
build/temp.macosx-10.9-x86_64-2.7/build/temp.macosx-10.9-x86_64-2.7/_constant_time.o
[pyopenssl]     gcc -bundle -undefined dynamic_lookup 
-L/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
-Wl,-rpath,/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
-L/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
-Wl,-rpath,/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
build/temp.macosx-10.9-x86_64-2.7/build/temp.macosx-10.9-x86_64-2.7/_constant_time.o
 
-L/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib -o 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings/_constant_time.so
[pyopenssl]     building '_padding' extension
[pyopenssl]     gcc -fno-strict-aliasing 
-I/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/var/tmp/sage/build/python2-2.7.13.p0/include
 
-DNDEBUG -g -fwrapv -O3 -Wall -Wno-unused 
-I/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/include/python2.7
 
-c build/temp.macosx-10.9-x86_64-2.7/_padding.c -o 
build/temp.macosx-10.9-x86_64-2.7/build/temp.macosx-10.9-x86_64-2.7/_padding.o
[pyopenssl]     gcc -bundle -undefined dynamic_lookup 
-L/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
-Wl,-rpath,/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
-L/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
-Wl,-rpath,/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib 
build/temp.macosx-10.9-x86_64-2.7/build/temp.macosx-10.9-x86_64-2.7/_padding.o 
-L/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/lib -o 
build/lib.macosx-10.9-x86_64-2.7/cryptography/hazmat/bindings/_padding.so
[pyopenssl]     building '_commoncrypto' extension
[pyopenssl]     gcc -fno-strict-aliasing 
-I/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/var/tmp/sage/build/python2-2.7.13.p0/include
 
-DNDEBUG -g -fwrapv -O3 -Wall -Wno-unused 
-I/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/include/python2.7
 
-c build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c -o 
build/temp.macosx-10.9-x86_64-2.7/build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.o
[pyopenssl]     In file included from /usr/include/Availability.h:184:0,
[pyopenssl]                      from /usr/include/stdio.h:65,
[pyopenssl]                      from 
/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/include/python2.7/Python.h:33,
[pyopenssl]                      from 
build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:18:
[pyopenssl]     
/System/Library/Frameworks/CoreFoundation.framework/Headers/CFDateFormatter.h:53:34:
 
error: expected ',' or '}' before '__attribute__'
[pyopenssl]          kCFISO8601DateFormatWithYear 
API_AVAILABLE(macosx(10.12), ios(10.0), watchos(3.0), tvos(10.0)) = (1UL << 
0),
[pyopenssl]                                       ^
[pyopenssl]     
/System/Library/Frameworks/CoreFoundation.framework/Headers/CFDateFormatter.h:80:126:
 
error: 'introduced' undeclared here (not in a function)
[pyopenssl]      CFDateFormatterRef 
CFDateFormatterCreateISO8601Formatter(CFAllocatorRef allocator, 
CFISO8601DateFormatOptions formatOptions) API_AVAILABLE(macosx(10.12), 
ios(10.0), watchos(3.0), tvos(10.0));
[pyopenssl]                                                                 
                                                                  ^
[pyopenssl]     
/System/Library/Frameworks/CoreFoundation.framework/Headers/CFURL.h:777:39: 
error: 'deprecated' undeclared here (not in a function)
[pyopenssl]      const CFStringRef kCFURLLabelColorKey API_DEPRECATED("Use 
NSURLLabelColorKey", macosx(10.6, 10.12), ios(4.0, 10.0), watchos(2.0, 
3.0), tvos(9.0, 10.0));
[pyopenssl]                                            ^
[pyopenssl]     
/System/Library/Frameworks/CoreFoundation.framework/Headers/CFURL.h:777:39: 
error: 'message' undeclared here (not in a function)
[pyopenssl]      const CFStringRef kCFURLLabelColorKey API_DEPRECATED("Use 
NSURLLabelColorKey", macosx(10.6, 10.12), ios(4.0, 10.0), watchos(2.0, 
3.0), tvos(9.0, 10.0));
[pyopenssl]                                            ^
[pyopenssl]     In file included from 
/System/Library/Frameworks/Security.framework/Headers/SecDigestTransform.h:28:0,
[pyopenssl]                      from 
build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:470:
[pyopenssl]     
/System/Library/Frameworks/Security.framework/Headers/SecTransform.h:580:15: 
error: expected identifier or '(' before '^' token
[pyopenssl]      typedef void (^SecMessageBlock)(CFTypeRef __nullable 
message, CFErrorRef __nullable error,
[pyopenssl]                    ^
[pyopenssl]     
/System/Library/Frameworks/Security.framework/Headers/SecTransform.h:613:8: 
error: unknown type name 'SecMessageBlock'
[pyopenssl]             SecMessageBlock deliveryBlock)
[pyopenssl]             ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecEncryptKey':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9383:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecEncryptKey);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecEncryptionMode':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9388:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecEncryptionMode);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecIVKey':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9393:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecIVKey);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecImportExportAccess':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9398:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecImportExportAccess);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecImportExportKeychain':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9403:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecImportExportKeychain);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecImportExportPassphrase':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9408:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecImportExportPassphrase);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecInputIsAttributeName':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9413:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecInputIsAttributeName);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecInputIsDigest':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9418:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecInputIsDigest);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecInputIsPlainText':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9423:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecInputIsPlainText);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecInputIsRaw':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9428:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecInputIsRaw);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecModeCBCKey':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9433:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecModeCBCKey);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecModeCFBKey':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9438:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecModeCFBKey);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecModeECBKey':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9443:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecModeECBKey);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecModeNoneKey':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9448:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecModeNoneKey);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecModeOFBKey':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9453:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecModeOFBKey);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecOAEPEncodingParametersAttributeName':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9458:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecOAEPEncodingParametersAttributeName);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecPaddingKey':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9463:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecPaddingKey);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecPaddingNoneKey':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9468:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecPaddingNoneKey);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecPaddingOAEPKey':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9473:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecPaddingOAEPKey);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecPaddingPKCS1Key':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9478:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecPaddingPKCS1Key);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecPaddingPKCS5Key':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9483:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecPaddingPKCS5Key);
[pyopenssl]               ^
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c: In 
function '_cffi_var_kSecPaddingPKCS7Key':
[pyopenssl]     build/temp.macosx-10.9-x86_64-2.7/_commoncrypto.c:9488:10: 
warning: return discards 'const' qualifier from pointer target type 
[-Wdiscarded-qualifiers]
[pyopenssl]        return &(kSecPaddingPKCS7Key);
[pyopenssl]               ^
[pyopenssl]     error: command 'gcc' failed with exit status 1
[pyopenssl]
[pyopenssl]     ----------------------------------------
[pyopenssl] Command 
"/Applications/SageMath-7.5.1.app/Contents/Resources/sage/local/bin/python 
-u -c "import setuptools, 
tokenize;__file__='/private/var/folders/qf/wr6_n5s56m780kv130nznmlc0000gn/T/pip-build-YqN6_t/cryptography/setup.py';exec(compile(getattr(tokenize,
 
'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" 
install --record 
/var/folders/qf/wr6_n5s56m780kv130nznmlc0000gn/T/pip-_Mvdak-record/install-record.txt
 
--single-version-externally-managed --compile" failed with error code 1 in 
/private/var/folders/qf/wr6_n5s56m780kv130nznmlc0000gn/T/pip-build-YqN6_t/cryptography/
[pyopenssl] You are using pip version 8.1.2, however version 9.0.1 is 
available.
[pyopenssl] You should consider upgrading via the 'pip install --upgrade 
pip' command.
make[1]: *** [pyopenssl] Error 1

real   0m34.263s
user   0m25.682s
sys     0m3.271s
***************************************************************
Error building Sage.

The following package(s) may have failed to build (not necessarily
during this run of 'make pyopenssl'):

The build directory may contain configuration files and other potentially
helpful information. WARNING: if you now run 'make' again, the build
directory will, by default, be deleted. Set the environment variable
SAGE_KEEP_BUILT_SPKGS to 'yes' to prevent this.

make: *** [pyopenssl] Error 1

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