Compilation error in Sage

[acad2]

After I use the Makefile to compile for Sage, it succeeds (with a tons of warnings though). Eventually, when I run from peigen import Faster inside Sage REPL I get the following error:

------------------------------------------------------------------------
/usr/lib/sagemath/local/lib/python2.7/site-packages/cysignals/signals.so(+0x45f8)[0x7f5a830e45f8]
/usr/lib/sagemath/local/lib/python2.7/site-packages/cysignals/signals.so(+0x4665)[0x7f5a830e4665]
/usr/lib/sagemath/local/lib/python2.7/site-packages/cysignals/signals.so(+0x804b)[0x7f5a830e804b]
/lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x7f5a8f5d1390]
./peigen.so(_ZNKL11HWorder_offILi7EEUlvE_clEv+0x1b)[0x7f582315b36b]
./peigen.so(+0x33492)[0x7f5823124492]
/lib64/ld-linux-x86-64.so.2(+0x106ba)[0x7f5a8fc106ba]
/lib64/ld-linux-x86-64.so.2(+0x107cb)[0x7f5a8fc107cb]
/lib64/ld-linux-x86-64.so.2(+0x158e2)[0x7f5a8fc158e2]
/lib64/ld-linux-x86-64.so.2(+0x10564)[0x7f5a8fc10564]
/lib64/ld-linux-x86-64.so.2(+0x14da9)[0x7f5a8fc14da9]
/lib/x86_64-linux-gnu/libdl.so.2(+0xf09)[0x7f5a8efe0f09]
/lib64/ld-linux-x86-64.so.2(+0x10564)[0x7f5a8fc10564]
/lib/x86_64-linux-gnu/libdl.so.2(+0x1571)[0x7f5a8efe1571]
/lib/x86_64-linux-gnu/libdl.so.2(dlopen+0x31)[0x7f5a8efe0fa1]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(_PyImport_GetDynLoadFunc+0x11d)[0x7f5a8f92c88d]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(_PyImport_LoadDynamicModule+0x6e)[0x7f5a8f90b8ce]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(+0x127100)[0x7f5a8f909100]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyImport_ImportModuleLevel+0x1f7)[0x7f5a8f909fe7]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(+0x106548)[0x7f5a8f8e8548]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyObject_Call+0x43)[0x7f5a8f836ff3]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_CallObjectWithKeywords+0x47)[0x7f5a8f8ea137]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x3211)[0x7f5a8f8ed961]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f5a8f8f400c]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f5a8f8f4129]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x6551)[0x7f5a8f8f0ca1]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f5a8f8f400c]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x7e96)[0x7f5a8f8f25e6]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f5a8f8f400c]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x7e96)[0x7f5a8f8f25e6]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f5a8f8f400c]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x7e96)[0x7f5a8f8f25e6]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f5a8f8f400c]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x7e96)[0x7f5a8f8f25e6]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f5a8f8f400c]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x7e96)[0x7f5a8f8f25e6]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f5a8f8f400c]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x7e96)[0x7f5a8f8f25e6]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x81c)[0x7f5a8f8f400c]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyEval_EvalCode+0x19)[0x7f5a8f8f4129]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyRun_FileExFlags+0x8a)[0x7f5a8f918a3a]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(PyRun_SimpleFileExFlags+0xe7)[0x7f5a8f919f37]
/usr/lib/sagemath//local/lib/libpython2.7.so.1.0(Py_Main+0xcc1)[0x7f5a8f930b31]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7f5a8f210830]
python(_start+0x29)[0x400759]
------------------------------------------------------------------------
Attaching gdb to process id 5743.

The error message further contains:

------------------------------------------------------------------------
Unhandled SIGILL: An illegal instruction occurred.
This probably occurred because a *compiled* module has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Python will now terminate.
------------------------------------------------------------------------
Illegal instruction (core dumped)

Apparently, there is an issue with the Sage interface. I am using Sage 7.5.1 in Ubuntu.