heroku push causes timeout error in slug-compiler for django

Question

I have two heroku apps, staging and production. I am able to push my latest code up to the staging server without issue, however when I try to push my latest code up to production I get a timeout error.

Looking at similar bugs that people have had it sounds like it could be an issue with the requirements doc or one of the packages. But I'm not sure how to even start debugging that. We're using a lot of external packages. And the fact that it works on one heroku app but not another makes me wonder how much it really is a previous app.

It appears to timeout at different times during the process without any other errors from what I can tell. The first time it timed out after starting the install of psycopg2, however the last time it made it past psycopg2 and then timed out on the gevent install.

I'm at a loss and this is the first time I've ever encountered this problem and this build needs to go out asap. Does anyone have any ideas?

Here is as much of the log as stackoverflow will allow me to post:

         Running setup.py install for django-extensions

         Running setup.py install for dj-database-url

         Running setup.py install for django-grappelli

         Running setup.py develop for ckeditor

           Creating /app/.heroku/python/lib/python2.7/site-packages/django-ckeditor.egg-link (link to .)
           Adding django-ckeditor 3.6.2 to easy-install.pth file

           Installed /app/.heroku/src/ckeditor
         Running setup.py install for django-heroku-memcacheify

         Running setup.py install for django-tastypie

         Running setup.py install for boto
           package init file 'tests/db/__init__.py' not found (or not a regular file)
           package init file 'tests/ec2/elb/__init__.py' not found (or not a regular file)
           package init file 'tests/utils/__init__.py' not found (or not a regular file)
           package init file 'boto/emr/tests/__init__.py' not found (or not a regular file)

           changing mode of build/scripts-2.7/sdbadmin from 600 to 755
           changing mode of build/scripts-2.7/elbadmin from 600 to 755
           changing mode of build/scripts-2.7/cfadmin from 600 to 755
           changing mode of build/scripts-2.7/s3put from 600 to 755
           changing mode of build/scripts-2.7/fetch_file from 600 to 755
           changing mode of build/scripts-2.7/launch_instance from 600 to 755
           changing mode of build/scripts-2.7/list_instances from 600 to 755
           changing mode of build/scripts-2.7/taskadmin from 600 to 755
           changing mode of build/scripts-2.7/kill_instance from 600 to 755
           changing mode of build/scripts-2.7/bundle_image from 600 to 755
           changing mode of build/scripts-2.7/pyami_sendmail from 600 to 755
           changing mode of build/scripts-2.7/lss3 from 600 to 755
           changing mode of build/scripts-2.7/cq from 600 to 755
           changing mode of build/scripts-2.7/route53 from 600 to 755
           changing mode of build/scripts-2.7/s3multiput from 600 to 755
           changing mode of build/scripts-2.7/cwutil from 600 to 755
           changing mode of build/scripts-2.7/instance_events from 600 to 755
           changing mode of build/scripts-2.7/asadmin from 600 to 755
           changing mode of /app/.heroku/python/bin/sdbadmin to 755
           changing mode of /app/.heroku/python/bin/taskadmin to 755
           changing mode of /app/.heroku/python/bin/lss3 to 755
           changing mode of /app/.heroku/python/bin/cq to 755
           changing mode of /app/.heroku/python/bin/route53 to 755
           changing mode of /app/.heroku/python/bin/cwutil to 755
           changing mode of /app/.heroku/python/bin/pyami_sendmail to 755
           changing mode of /app/.heroku/python/bin/instance_events to 755
           changing mode of /app/.heroku/python/bin/s3multiput to 755
           changing mode of /app/.heroku/python/bin/launch_instance to 755
           changing mode of /app/.heroku/python/bin/s3put to 755
           changing mode of /app/.heroku/python/bin/list_instances to 755
           changing mode of /app/.heroku/python/bin/bundle_image to 755
           changing mode of /app/.heroku/python/bin/kill_instance to 755
           changing mode of /app/.heroku/python/bin/elbadmin to 755
           changing mode of /app/.heroku/python/bin/fetch_file to 755
           changing mode of /app/.heroku/python/bin/cfadmin to 755
           changing mode of /app/.heroku/python/bin/asadmin to 755
         Running setup.py install for django-storages

         Running setup.py install for psycopg2
           building 'psycopg2._psycopg' extension
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/psycopgmodule.c -o build/temp.linux-x86_64-2.7/psycopg/psycopgmodule.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/green.c -o build/temp.linux-x86_64-2.7/psycopg/green.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/pqpath.c -o build/temp.linux-x86_64-2.7/psycopg/pqpath.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/utils.c -o build/temp.linux-x86_64-2.7/psycopg/utils.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/bytes_format.c -o build/temp.linux-x86_64-2.7/psycopg/bytes_format.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/connection_int.c -o build/temp.linux-x86_64-2.7/psycopg/connection_int.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/connection_type.c -o build/temp.linux-x86_64-2.7/psycopg/connection_type.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/cursor_int.c -o build/temp.linux-x86_64-2.7/psycopg/cursor_int.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/cursor_type.c -o build/temp.linux-x86_64-2.7/psycopg/cursor_type.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/lobject_int.c -o build/temp.linux-x86_64-2.7/psycopg/lobject_int.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/lobject_type.c -o build/temp.linux-x86_64-2.7/psycopg/lobject_type.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/notify_type.c -o build/temp.linux-x86_64-2.7/psycopg/notify_type.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/xid_type.c -o build/temp.linux-x86_64-2.7/psycopg/xid_type.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/adapter_asis.c -o build/temp.linux-x86_64-2.7/psycopg/adapter_asis.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/adapter_binary.c -o build/temp.linux-x86_64-2.7/psycopg/adapter_binary.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/adapter_datetime.c -o build/temp.linux-x86_64-2.7/psycopg/adapter_datetime.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/adapter_list.c -o build/temp.linux-x86_64-2.7/psycopg/adapter_list.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/adapter_pboolean.c -o build/temp.linux-x86_64-2.7/psycopg/adapter_pboolean.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/adapter_pdecimal.c -o build/temp.linux-x86_64-2.7/psycopg/adapter_pdecimal.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/adapter_pint.c -o build/temp.linux-x86_64-2.7/psycopg/adapter_pint.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/adapter_pfloat.c -o build/temp.linux-x86_64-2.7/psycopg/adapter_pfloat.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/adapter_qstring.c -o build/temp.linux-x86_64-2.7/psycopg/adapter_qstring.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/microprotocols.c -o build/temp.linux-x86_64-2.7/psycopg/microprotocols.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/microprotocols_proto.c -o build/temp.linux-x86_64-2.7/psycopg/microprotocols_proto.o -Wdeclaration-after-statement
           gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPSYCOPG_DEFAULT_PYDATETIME=1 -DPSYCOPG_VERSION="2.4.6 (dt dec pq3 ext)" -DPG_VERSION_HEX=0x080409 -DPSYCOPG_EXTENSIONS=1 -DPSYCOPG_NEW_BOOLEAN=1 -DHAVE_PQFREEMEM=1 -I/app/.heroku/python/include/python2.7 -I. -I/usr/include/postgresql -I/usr/include/postgresql/8.4/server -c psycopg/typecast.c -o build/temp.linux-x86_64-2.7/psycopg/typecast.o -Wdeclaration-after-statement
           gcc -pthread -shared build/temp.linux-x86_64-2.7/psycopg/psycopgmodule.o build/temp.linux-x86_64-2.7/psycopg/green.o build/temp.linux-x86_64-2.7/psycopg/pqpath.o build/temp.linux-x86_64-2.7/psycopg/utils.o build/temp.linux-x86_64-2.7/psycopg/bytes_format.o build/temp.linux-x86_64-2.7/psycopg/connection_int.o build/temp.linux-x86_64-2.7/psycopg/connection_type.o build/temp.linux-x86_64-2.7/psycopg/cursor_int.o build/temp.linux-x86_64-2.7/psycopg/cursor_type.o build/temp.linux-x86_64-2.7/psycopg/lobject_int.o build/temp.linux-x86_64-2.7/psycopg/lobject_type.o build/temp.linux-x86_64-2.7/psycopg/notify_type.o build/temp.linux-x86_64-2.7/psycopg/xid_type.o build/temp.linux-x86_64-2.7/psycopg/adapter_asis.o build/temp.linux-x86_64-2.7/psycopg/adapter_binary.o build/temp.linux-x86_64-2.7/psycopg/adapter_datetime.o build/temp.linux-x86_64-2.7/psycopg/adapter_list.o build/temp.linux-x86_64-2.7/psycopg/adapter_pboolean.o build/temp.linux-x86_64-2.7/psycopg/adapter_pdecimal.o build/temp.linux-x86_64-2.7/psycopg/adapter_pint.o build/temp.linux-x86_64-2.7/psycopg/adapter_pfloat.o build/temp.linux-x86_64-2.7/psycopg/adapter_qstring.o build/temp.linux-x86_64-2.7/psycopg/microprotocols.o build/temp.linux-x86_64-2.7/psycopg/microprotocols_proto.o build/temp.linux-x86_64-2.7/psycopg/typecast.o -L/usr/lib -lpq -o build/lib.linux-x86_64-2.7/psycopg2/_psycopg.so
/app/slug-compiler/lib/utils.rb:66:in `block (2 levels) in spawn': command='/app/slug-compiler/lib/../../tmp/buildpacks/python/bin/compile /tmp/build_2ptirkdt1juhy /app/tmp/repo.git/.cache' exit_status=0 out='' at=timeout elapsed=900.018394947052 (Utils::TimeoutError)
    from /app/slug-compiler/lib/utils.rb:52:in `loop'
    from /app/slug-compiler/lib/utils.rb:52:in `block in spawn'
    from /app/slug-compiler/lib/utils.rb:47:in `popen'
    from /app/slug-compiler/lib/utils.rb:47:in `spawn'
    from /app/slug-compiler/lib/buildpack.rb:37:in `block in compile'
    from /app/slug-compiler/lib/buildpack.rb:35:in `fork'
    from /app/slug-compiler/lib/buildpack.rb:35:in `compile'
    from /app/slug-compiler/lib/slug.rb:497:in `block in run_buildpack'
    from /app/slug-compiler/lib/utils.rb:121:in `log'
    from /app/slug-compiler/lib/slug.rb:748:in `log'
    from /app/slug-compiler/lib/slug.rb:496:in `run_buildpack'
    from /app/slug-compiler/lib/slug.rb:125:in `block (2 levels) in compile'
    from /app/slug-compiler/lib/utils.rb:102:in `block in timeout'
    from /usr/local/lib/ruby/1.9.1/timeout.rb:58:in `timeout'
    from /app/slug-compiler/lib/utils.rb:102:in `rescue in timeout'
    from /app/slug-compiler/lib/utils.rb:97:in `timeout'
    from /app/slug-compiler/lib/slug.rb:114:in `block in compile'
    from /app/slug-compiler/lib/utils.rb:121:in `log'
    from /app/slug-compiler/lib/slug.rb:748:in `log'
    from /app/slug-compiler/lib/slug.rb:113:in `compile'
    from /app/slug-compiler/bin/slugc:85:in `block in <main>'
    from /app/slug-compiler/lib/slug.rb:505:in `block in lock'
    from /app/slug-compiler/lib/repo_lock.rb:44:in `call'
    from /app/slug-compiler/lib/repo_lock.rb:44:in `run'
    from /app/slug-compiler/lib/slug.rb:505:in `lock'
    from /app/slug-compiler/bin/slugc:66:in `<main>'
 !     Heroku push rejected, failed to compile Python app

Auto packing the repository for optimum performance.
Connection to 10.217.65.204 closed by remote host.
To [email protected]:belo.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to '[email protected]:belo.git'
Completed with errors, see above

Answer 1

There's now a proper but undocumented solution to this problem (github history shows it was implemented in Feb. 2013): the COMPILE_TIMEOUT environment variable. Set it like so for a 50 minute timeout (the default is '900', or 15 minutes):

$ heroku config:set COMPILE_TIMEOUT=3000

(note: you need user-env-compile enabled to use this feature)

Update: Please read the comments on this answer for an important update -- long story short, Heroku recommends contacting support directly in these cases, and COMPILE_TIMEOUT either no longer works or never worked as a solution to this particular problem.

Answer 2

I heard back from Heroku support. In my particular circumstance, the issue was that we simply have too many dependencies in requirements. It is a very large scale project and we utilize many third party modules and it simply was taking too long to install and create the slug.

The solution was to comment out half of our requirements and push, then undo the comments and push again.

Here is the response from Heroku:

That's a lot of dependencies!

I'd recommend pushing once with only half of your dependencies, then once again with all of them. Then you won't hit the timeout.

Once they are installed, they are cached, so you shouldn't run into this again.