broken-nixops

building '/nix/store/b80n3wkjyg278yk57wg8dbxfvd5pg7zg-python3.6-lxml-4.2.5.drv'...
unpacking sources
unpacking source archive /nix/store/ldf2lf4gchy9algrlnvx7csix45g77z4-lxml-4.2.5.tar.gz
source root is lxml-4.2.5
setting SOURCE_DATE_EPOCH to timestamp 1536506672 of file lxml-4.2.5/src/lxml.egg-info/SOURCES.txt
patching sources
configuring
building
Building lxml version 4.2.5.
Building without Cython.
Using build configuration of libxslt 1.1.32
Building against libxml2/libxslt in one of the following directories:
  /nix/store/hrq1w2bsv26az9jpd30yn8x7y86cy8wq-libxslt-1.1.32/lib
  /nix/store/dfgkz6fidbsvmmxy6xxym1gsw0mcg6nv-libxml2-2.9.8/lib
running bdist_wheel
running build
running build_py
creating build
creating build/lib.linux-x86_64-3.6
creating build/lib.linux-x86_64-3.6/lxml
copying src/lxml/sax.py -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/_elementpath.py -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/builder.py -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/ElementInclude.py -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/__init__.py -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/usedoctest.py -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/cssselect.py -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/pyclasslookup.py -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/doctestcompare.py -> build/lib.linux-x86_64-3.6/lxml
creating build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/__init__.py -> build/lib.linux-x86_64-3.6/lxml/includes
creating build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/diff.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/ElementSoup.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/html5parser.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/builder.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/__init__.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/usedoctest.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/_setmixin.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/clean.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/soupparser.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/_html5builder.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/_diffcommand.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/formfill.py -> build/lib.linux-x86_64-3.6/lxml/html
copying src/lxml/html/defs.py -> build/lib.linux-x86_64-3.6/lxml/html
creating build/lib.linux-x86_64-3.6/lxml/isoschematron
copying src/lxml/isoschematron/__init__.py -> build/lib.linux-x86_64-3.6/lxml/isoschematron
copying src/lxml/etree.h -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/etree_api.h -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/lxml.etree.h -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/lxml.etree_api.h -> build/lib.linux-x86_64-3.6/lxml
copying src/lxml/includes/etreepublic.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/xinclude.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/xmlerror.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/htmlparser.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/config.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/__init__.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/xmlschema.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/uri.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/xslt.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/tree.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/xmlparser.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/dtdvalid.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/xpath.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/relaxng.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/c14n.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/schematron.pxd -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/etree_defs.h -> build/lib.linux-x86_64-3.6/lxml/includes
copying src/lxml/includes/lxml-version.h -> build/lib.linux-x86_64-3.6/lxml/includes
creating build/lib.linux-x86_64-3.6/lxml/isoschematron/resources
creating build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/rng
copying src/lxml/isoschematron/resources/rng/iso-schematron.rng -> build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/rng
creating build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/RNG2Schtrn.xsl -> build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/xsl
copying src/lxml/isoschematron/resources/xsl/XSD2Schtrn.xsl -> build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/xsl
creating build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_dsdl_include.xsl -> build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_abstract_expand.xsl -> build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_skeleton_for_xslt1.xsl -> build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_schematron_message.xsl -> build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/iso_svrl_for_xslt1.xsl -> build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
copying src/lxml/isoschematron/resources/xsl/iso-schematron-xslt1/readme.txt -> build/lib.linux-x86_64-3.6/lxml/isoschematron/resources/xsl/iso-schematron-xslt1
running build_ext
building 'lxml.etree' extension
creating build/temp.linux-x86_64-3.6
creating build/temp.linux-x86_64-3.6/src
creating build/temp.linux-x86_64-3.6/src/lxml
gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -DCYTHON_CLINE_IN_TRACEBACK=0 -I/nix/store/wiydsdjdwn537c90y1c5b0jmd3w2zq44-libxslt-1.1.32-dev/include -I/nix/store/q7y77lw25clyn4n20vls5x295cwfv030-libxml2-2.9.8-dev/include/libxml2 -Isrc -Isrc/lxml/includes -I/nix/store/hy65mn4wjswqih75gfr6g4q3xgqdm325-python3-3.6.6/include/python3.6m -c src/lxml/etree.c -o build/temp.linux-x86_64-3.6/src/lxml/etree.o -w