rebar3.crashdump

Error: {badmatch,{error,{rebar_prv_update,package_index_download}}}
[{rebar_app_utils,fetch_checksum,4,
                  [{file,"/home/tristan/Devel/rebar3/_build/default/lib/rebar/src/rebar_app_utils.erl"},
                   {line,212}]},
 {rebar_app_utils,update_source,3,
                  [{file,"/home/tristan/Devel/rebar3/_build/default/lib/rebar/src/rebar_app_utils.erl"},
                   {line,193}]},
 {rebar_app_utils,dep_to_app,7,
                  [{file,"/home/tristan/Devel/rebar3/_build/default/lib/rebar/src/rebar_app_utils.erl"},
                   {line,169}]},
 {rebar_app_utils,'-parse_deps/6-lc$^0/1-0-',6,
                  [{file,"/home/tristan/Devel/rebar3/_build/default/lib/rebar/src/rebar_app_utils.erl"},
                   {line,98}]},
 {rebar_app_discover,'-do/2-fun-0-',3,
                     [{file,"/home/tristan/Devel/rebar3/_build/default/lib/rebar/src/rebar_app_discover.erl"},
                      {line,31}]},
 {lists,foldl,3,[{file,"lists.erl"},{line,1262}]},
 {rebar_app_discover,do,2,
                     [{file,"/home/tristan/Devel/rebar3/_build/default/lib/rebar/src/rebar_app_discover.erl"},
                      {line,27}]},
 {rebar_prv_app_discovery,do,1,
                          [{file,"/home/tristan/Devel/rebar3/_build/default/lib/rebar/src/rebar_prv_app_discovery.erl"},
                           {line,38}]}]