我正在尝试在Digital Ocean上部署应用程序，Droplet是Dbuku的Ubuntu 14.04,512mb RAM，应用程序是带有Postgres的Flask。安装pandas时安装似乎失败了，但我真的不明白可能导致它的原因。我该怎么做才能排除故障？
x86_64-linux-gnu-gcc: internal compiler error: Killed (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.8/README.Bugs> for instructions.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 4
----------------------------------------
Cleaning up...
Command /usr/bin/python -c "import setuptools, tokenize;__file__='/tmp/pip_build_root/pandas/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-ociGjE-record/install-record.txt --single-version-externally-managed --compile failed with error code 1 in /tmp/pip_build_root/pandas
Storing debug log for failure in /root/.pip/pip.log
remote: The command '/bin/sh -c pip install -r /opt/app/requirements.txt' returned a non-zero code: 1