e.g. http://musicbrainz.org/ws/2/collection

Picard calls this to fetch a user's collections and, if the username contains Latin-1 non-ASCII characters gets:

Error:

Caught exception in MusicBrainz::Server::Controller::WS::2::Collection->list_list "Failed query:
'SELECT editor.id, editor.name, password, privs, email, website, bio,
member_since, email_confirm_date, last_login_date, edits_accepted,
edits_rejected, auto_edits_accepted, edits_failed, gender, area,
birth_date FROM editor WHERE lower(name) = ? LIMIT 1'
(ß)
DBD::Pg::st execute failed: ERROR: invalid byte sequence for encoding "UTF8": 0xdf27 at lib/Sql.pm line 370, line 1.

at lib/Sql.pm line 383, line 1.
Sql::_ANON_('DBD::Pg::st execute failed: ERROR: invalid byte sequence for...') called at local/lib/perl5/Try/Tiny.pm line 100
Try::Tiny::try('CODE(0xddf52b0)', 'Try::Tiny::Catch=REF(0xdcd85d8)') called at lib/Sql.pm line 385
Sql::_select_single_row('Sql=HASH(0xda5f610)', 'SELECT editor.id, editor.name, password, privs, email, websit...', 'ARRAY(0x5bc0610)', 'hashref') called at lib/Sql.pm line 391
Sql::select_single_row_hash('Sql=HASH(0xda5f610)', 'SELECT editor.id, editor.name, password, privs, email, websit...', '\x

Unknown macro: {df}

') called at lib/MusicBrainz/Server/Data/Editor.pm line 76
MusicBrainz::Server::Data::Editor::get_by_name('MusicBrainz::Server::Data::Editor=HASH(0xc0c4770)', '\x

') called at lib/MusicBrainz/Server/Authentication/WS/Store.pm line 31
MusicBrainz::Server::Authentication::WS::Store::find_user('MusicBrainz::Server::Authentication::WS::Store=HASH(0x5213918)', 'HASH(0xdb38c90)', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst/Authentication/Realm.pm line 145
Catalyst::Authentication::Realm::find_user('Catalyst::Authentication::Realm=HASH(0x5213840)', 'HASH(0xdb38c90)', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst/Authentication/Credential/HTTP.pm line 159
Catalyst::Authentication::Credential::HTTP::authenticate_digest('MusicBrainz::Server::Authentication::WS::Credential=HASH(0x52...', 'MusicBrainz::Server=HASH(0xdc0a0e0)', 'Catalyst::Authentication::Realm=HASH(0x5213840)', 'HASH(0xdcec778)') called at local/lib/perl5/Catalyst/Authentication/Credential/HTTP.pm line 59
Catalyst::Authentication::Credential::HTTP::authenticate('MusicBrainz::Server::Authentication::WS::Credential=HASH(0x52...', 'MusicBrainz::Server=HASH(0xdc0a0e0)', 'Catalyst::Authentication::Realm=HASH(0x5213840)', 'HASH(0xdcec778)') called at lib/MusicBrainz/Server/Authentication/WS/Credential.pm line 19
MusicBrainz::Server::Authentication::WS::Credential::authenticate('MusicBrainz::Server::Authentication::WS::Credential=HASH(0x52...', 'MusicBrainz::Server=HASH(0xdc0a0e0)', 'Catalyst::Authentication::Realm=HASH(0x5213840)', 'HASH(0xdcec778)') called at local/lib/perl5/Catalyst/Authentication/Realm.pm line 161
Catalyst::Authentication::Realm::authenticate('Catalyst::Authentication::Realm=HASH(0x5213840)', 'MusicBrainz::Server=HASH(0xdc0a0e0)', 'HASH(0xdcec778)') called at local/lib/perl5/Catalyst/Plugin/Authentication.pm line 378
Catalyst::Plugin::Authentication::authenticate('MusicBrainz::Server=HASH(0xdc0a0e0)', 'HASH(0xdcec778)', 'musicbrainz.org') called at lib/MusicBrainz/Server/ControllerBase/WS/2.pm line 181
MusicBrainz::Server::ControllerBase::WS::2::authenticate('MusicBrainz::Server::Controller::WS::2::Collection=HASH(0xd2a...', 'MusicBrainz::Server=HASH(0xdc0a0e0)', 16) called at lib/MusicBrainz/Server/Controller/WS/2/Collection.pm line 125
MusicBrainz::Server::Controller::WS::2::Collection::list_list('MusicBrainz::Server::Controller::WS::2::Collection=HASH(0xd2a...', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst/Action.pm line 65
Catalyst::Action::execute('Catalyst::Action=HASH(0xd63d438)', 'MusicBrainz::Server::Controller::WS::2::Collection=HASH(0xd2a...', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst.pm line 1672
eval

Unknown macro: {...}

called at local/lib/perl5/Catalyst.pm line 1672
Catalyst::execute('MusicBrainz::Server=HASH(0xdc0a0e0)', 'MusicBrainz::Server::Controller::WS::2::Collection', 'Catalyst::Action=HASH(0xd63d438)') called at local/lib/perl5/Catalyst/Plugin/StackTrace.pm line 94
Catalyst::Plugin::StackTrace::execute('MusicBrainz::Server=HASH(0xdc0a0e0)', 'MusicBrainz::Server::Controller::WS::2::Collection', 'Catalyst::Action=HASH(0xd63d438)') called at local/lib/perl5/Catalyst/Action.pm line 60
Catalyst::Action::dispatch('Catalyst::Action=HASH(0xd63d438)', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst/ActionChain.pm line 38
Catalyst::ActionChain::dispatch('Catalyst::ActionChain=HASH(0xddf2a70)', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst/Controller.pm line 158
Catalyst::Controller::_ACTION('MusicBrainz::Server::Controller::WS::2::Collection=HASH(0xd2a...', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst/Action.pm line 65
Catalyst::Action::execute('Catalyst::Action=HASH(0xd7674e0)', 'MusicBrainz::Server::Controller::WS::2::Collection=HASH(0xd2a...', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst.pm line 1672
eval

called at local/lib/perl5/Catalyst.pm line 1672
Catalyst::execute('MusicBrainz::Server=HASH(0xdc0a0e0)', 'MusicBrainz::Server::Controller::WS::2::Collection', 'Catalyst::Action=HASH(0xd7674e0)') called at local/lib/perl5/Catalyst/Plugin/StackTrace.pm line 94
Catalyst::Plugin::StackTrace::execute('MusicBrainz::Server=HASH(0xdc0a0e0)', 'MusicBrainz::Server::Controller::WS::2::Collection', 'Catalyst::Action=HASH(0xd7674e0)') called at local/lib/perl5/Catalyst/Action.pm line 60
Catalyst::Action::dispatch('Catalyst::Action=HASH(0xd7674e0)', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst/Dispatcher.pm line 257
Catalyst::Dispatcher::_do_forward('Catalyst::Dispatcher=HASH(0x4b61090)', 'forward', 'MusicBrainz::Server=HASH(0xdc0a0e0)', '_ACTION') called at local/lib/perl5/Catalyst/Dispatcher.pm line 237
Catalyst::Dispatcher::forward('Catalyst::Dispatcher=HASH(0x4b61090)', 'MusicBrainz::Server=HASH(0xdc0a0e0)', '_ACTION') called at local/lib/perl5/Catalyst.pm line 362
Catalyst::forward('MusicBrainz::Server=HASH(0xdc0a0e0)', '_ACTION') called at local/lib/perl5/Catalyst/Controller.pm line 132
Catalyst::Controller::_DISPATCH('MusicBrainz::Server::Controller::WS::2::Collection=HASH(0xd2a...', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst/Action.pm line 65
Catalyst::Action::execute('Catalyst::Action=HASH(0xd766ec8)', 'MusicBrainz::Server::Controller::WS::2::Collection=HASH(0xd2a...', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst.pm line 1672
eval

Unknown macro: {...}

called at local/lib/perl5/Catalyst.pm line 1672
Catalyst::execute('MusicBrainz::Server=HASH(0xdc0a0e0)', 'MusicBrainz::Server::Controller::WS::2::Collection', 'Catalyst::Action=HASH(0xd766ec8)') called at local/lib/perl5/Catalyst/Plugin/StackTrace.pm line 94
Catalyst::Plugin::StackTrace::execute('MusicBrainz::Server=HASH(0xdc0a0e0)', 'MusicBrainz::Server::Controller::WS::2::Collection', 'Catalyst::Action=HASH(0xd766ec8)') called at local/lib/perl5/Catalyst/Action.pm line 60
Catalyst::Action::dispatch('Catalyst::Action=HASH(0xd766ec8)', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst/Dispatcher.pm line 257
Catalyst::Dispatcher::_do_forward('Catalyst::Dispatcher=HASH(0x4b61090)', 'forward', 'MusicBrainz::Server=HASH(0xdc0a0e0)', '/ws/2/collection/_DISPATCH') called at local/lib/perl5/Catalyst/Dispatcher.pm line 237
Catalyst::Dispatcher::forward('Catalyst::Dispatcher=HASH(0x4b61090)', 'MusicBrainz::Server=HASH(0xdc0a0e0)', '/ws/2/collection/_DISPATCH') called at local/lib/perl5/Catalyst.pm line 362
Catalyst::forward('MusicBrainz::Server=HASH(0xdc0a0e0)', '/ws/2/collection/_DISPATCH') called at local/lib/perl5/Catalyst/Dispatcher.pm line 105
Catalyst::Dispatcher::dispatch('Catalyst::Dispatcher=HASH(0x4b61090)', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst.pm line 1618
Catalyst::dispatch('MusicBrainz::Server=HASH(0xdc0a0e0)') called at lib/MusicBrainz/Server.pm line 326
MusicBrainz::Server::_ANON_() called at lib/MusicBrainz/Server.pm line 300
MusicBrainz::Server::with_translations('MusicBrainz::Server=HASH(0xdc0a0e0)', 'CODE(0xd8c17d8)') called at lib/MusicBrainz/Server.pm line 327
Class::MOP::Class:::around('CODE(0x3f41f90)', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/x86_64-linux-gnu-thread-multi/Class/MOP/Method/Wrapped.pm line 162
Class::MOP::Method::Wrapped::_ANON_('MusicBrainz::Server=HASH(0xdc0a0e0)') called at lib/MusicBrainz/Server.pm line 341
Class::MOP::Class:::around('CODE(0xd7fb7a8)', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/x86_64-linux-gnu-thread-multi/Class/MOP/Method/Wrapped.pm line 162
Class::MOP::Method::Wrapped::_ANON_('MusicBrainz::Server=HASH(0xdc0a0e0)') called at lib/MusicBrainz/Server.pm line 386
Class::MOP::Class:::around('CODE(0xd8144c0)', 'MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/x86_64-linux-gnu-thread-multi/Class/MOP/Method/Wrapped.pm line 162
Class::MOP::Method::Wrapped::_ANON_('MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/x86_64-linux-gnu-thread-multi/Class/MOP/Method/Wrapped.pm line 35
Class::MOP::Method::Wrapped::_ANON_('MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/x86_64-linux-gnu-thread-multi/Class/MOP/Method/Wrapped.pm line 91
MusicBrainz::Server::dispatch('MusicBrainz::Server=HASH(0xdc0a0e0)') called at local/lib/perl5/Catalyst.pm line 1968
Catalyst::_ANON_() called at local/lib/perl5/Try/Tiny.pm line 76
eval

called at local/lib/perl5/Try/Tiny.pm line 67
Try::Tiny::try('CODE(0xdce8440)', 'Try::Tiny::Catch=REF(0xddee640)') called at local/lib/perl5/Catalyst.pm line 1974
Catalyst::handle_request('MusicBrainz::Server', 'env', 'HASH(0xdca66a8)', 'response_cb', 'CODE(0xd8aeed8)') called at local/lib/perl5/Catalyst/Plugin/AutoRestart.pm line 117
Catalyst::Plugin::AutoRestart::handle_request('MusicBrainz::Server', 'env', 'HASH(0xdca66a8)', 'response_cb', 'CODE(0xd8aeed8)') called at local/lib/perl5/Catalyst/Engine.pm line 688
Catalyst::Engine::_ANON_('CODE(0xd8aeed8)') called at local/lib/perl5/Plack/Handler/FCGI.pm line 130
Plack::Handler::FCGI::run('Plack::Handler::FCGI=HASH(0x1e7a9d0)', 'CODE(0xd819bd0)') called at local/lib/perl5/Plack/Loader.pm line 84
Plack::Loader::run('Plack::Loader=HASH(0x1da1c90)', 'Plack::Handler::FCGI=HASH(0x1e7a9d0)') called at local/lib/perl5/Plack/Runner.pm line 267
Plack::Runner::run('Plack::Runner=HASH(0x1c2a808)') called at local/bin/plackup line 10"
Stack trace:
line 76 MusicBrainz::Server::Data::Editor
line 31 MusicBrainz::Server::Authentication::WS::Store
line 19 MusicBrainz::Server::Authentication::WS::Credential
line 181 MusicBrainz::Server::ControllerBase::WS::2
line 125 MusicBrainz::Server::Controller::WS::2::Collection
line 326 MusicBrainz::Server
line 300 MusicBrainz::Server
line 327 MusicBrainz::Server
line 341 MusicBrainz::Server
line 386 MusicBrainz::Server
Request data:

$VAR1 = {
'query_parameters' => {},
'body_parameters' => {}
};

Host: pingu

URL: http://musicbrainz.org/ws/2/collection

When trying to reproduce it with a non-Latin-1 username, it doesn't do anything at all, I just keep repeatedly getting asked for the username and password.