我正在为企业执行安全审计，我想在托管在 azure 中的 debian 虚拟机上安装 w3af。
平台信息：
Linux 4.9.0-8-amd64 SMP Debian 4.9.110-3+deb9u6 (2018-10-08) x86_64 GNU/Linux Debian 版本：9.5（“Strech”）
w3af_dependency_install.sh 的内容：
sudo pip install lxml==3.4.4 scapy-real==2.2.0-dev guess-language==0.2 cluster==1.1.1b3 msgpack==0.5.6 python-ntlm==1.0.1 halberd==0.2.4 darts.util.lru==0.5 Jinja2==2.10 vulndb==0.1.0 markdown==2.6.1 psutil==2.2.1 ds-store==1.1.2 termcolor==1.1.0 mitmproxy==0.13 ruamel.ordereddict==0.4.8 Flask==0.10.1 PyYAML==3.12 tldextract==1.7.2 pebble==4.3.8 acora==2.1 esmre==0.3.1 diff-match-patch==20121119 bravado-core==5.0.2 lz4==1.1.0 vulners==1.3.0
点冻结的输出：
asn1crypto==0.24.0 beautifulsoup4==4.5.3 cffi==1.11.5 chardet==3.0.4 cryptography==2.3.1 enum34==1.1.6 futures==3.2.0 gitdb2==2.0.4 GitPython==2.1.3 html5lib==0.999999999 idna==2.2 ipaddress==1.0.17 keyring==10.1 keyrings.alt==1.3 lxml==3.7.1 ndg-httpsclient==0.4.0 nltk==3.0.1 pdfminer==20140328 phply==0.9.1 ply==3.11 pyasn1==0.4.2 pybloomfiltermmap==0.3.14 pyClamd==0.4.0 pycparser==2.19 pycrypto==2.6.1 PyGithub==1.21.0 pygobject==3.22.0 pyOpenSSL==18.0.0 pyxdg==0.25 SecretStorage==2.3.1 six==1.10.0 smmap2==2.0.4 tblib==0.2.0 webencodings==0.5
Python --版本：
2.7.13
错误：
Failed building wheel for lxml Running setup.py clean for lxml Failed to build lxmlCan't rollback lxml, nothing uninstalled. Command "/usr/bin/python -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-fMp2m9/lxml/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record /tmp/pip-TZ6zpj-record/install-record.txt --single-version-externally-managed --compile" failed with error code 1 in /tmp/pip-build-fMp2m9/lxml/