thread '<unnamed>' panicked at 'called `Result::unwrap()` on an `Err` value: WireError("invalid value for enum: 13")', /checkout/src/libcore/result.rs:859

[JKocerka]

I get the following error when trying to run librespot with ALSA backend: RUST_BACKTRACE=1 ./librespot --name SpotiPi --verbose

INFO:librespot: librespot 2259188 (2017-06-14). Built on 2017-06-26. WARN:mdns: Failed to register IPv6 receiver: Error { repr: Os { code: 97, message: "Address family not supported by protocol" } } DEBUG:librespot::authentication::discovery: Post "/" {} INFO:librespot::session: Connecting to AP "gew1-accesspoint-b-lmrw.ap.spotify.com:4070" INFO:librespot::session: Authenticated as "****" ! DEBUG:librespot::session: new Session[0] DEBUG:librespot::spirc: new Spirc[0] DEBUG:librespot::mercury: new MercuryManager DEBUG:librespot::session: Session[0] strong=3 weak=2 INFO:librespot::session: Country: "PL" DEBUG:librespot::player: new Player[0] INFO:librespot::audio_backend::alsa: Using alsa sink DEBUG:librespot::mercury: subscribed uri=hm://remote/3/user/****/ count=0 DEBUG:librespot::spirc: kMessageTypeNotify "FRD-L09" da2e94c28e66cb7d70b33fd929ea19d72c4e02d1 1 1501186500996 DEBUG:librespot::spirc: kMessageTypeLoad "FRD-L09" da2e94c28e66cb7d70b33fd929ea19d72c4e02d1 2 0 DEBUG:librespot::player: command=Load(SpotifyId(u128 { high: 16505002772753303400, low: 9692160635951389779 }), false, 673) DEBUG:librespot::metadata: new MetadataManager DEBUG:librespot::spirc: kMessageTypeNotify "FRD-L09" da2e94c28e66cb7d70b33fd929ea19d72c4e02d1 15 1501186500996 thread '' panicked at 'called Result::unwrap() on an Err value: WireError("invalid value for enum: 13")', /checkout/src/libcore/result.rs:859 stack backtrace: DEBUG:librespot::spirc: kMessageTypeNotify "SpotiPi" 70df4a9775279d6f031b370a3c7c8c8de0465c32 2 1501186634551 0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49 1: std::sys_common::backtrace::_print at /checkout/src/libstd/sys_common/backtrace.rs:71 2: std::panicking::default_hook::{{closure}} at /checkout/src/libstd/sys_common/backtrace.rs:60 at /checkout/src/libstd/panicking.rs:355 3: std::panicking::default_hook at /checkout/src/libstd/panicking.rs:371 4: std::panicking::rust_panic_with_hook at /checkout/src/libstd/panicking.rs:549 5: std::panicking::begin_panic at /checkout/src/libstd/panicking.rs:511 6: std::panicking::begin_panic_fmt at /checkout/src/libstd/panicking.rs:495 7: rust_begin_unwind at /checkout/src/libstd/panicking.rs:471 8: core::panicking::panic_fmt at /checkout/src/libcore/panicking.rs:69 9: core::result::unwrap_failed 10: <futures::future::and_then::AndThen<A, B, F> as futures::future::Future>::poll 11: librespot::player::PlayerInternal::load_track 12: librespot::player::PlayerInternal::run 13: std::panicking::try::do_call 14: rust_maybe_catch_panic at /checkout/src/libpanic_unwind/lib.rs:98 15: <F as alloc::boxed::FnBox>::call_box 16: std::sys::imp::thread::Thread::new::thread_start at /checkout/src/liballoc/boxed.rs:650 at /checkout/src/libstd/sys_common/thread.rs:21 at /checkout/src/libstd/sys/unix/thread.rs:84 DEBUG:librespot::player: drop Player[0] DEBUG:librespot::spirc: kMessageTypePlay "FRD-L09" da2e94c28e66cb7d70b33fd929ea19d72c4e02d1 3 0 thread 'main' panicked at 'called Result::unwrap() on an Err value: "SendError(..)"', /checkout/src/libcore/result.rs:859 stack backtrace: 0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49 1: std::sys_common::backtrace::_print at /checkout/src/libstd/sys_common/backtrace.rs:71 2: std::panicking::default_hook::{{closure}} at /checkout/src/libstd/sys_common/backtrace.rs:60 at /checkout/src/libstd/panicking.rs:355 3: std::panicking::default_hook at /checkout/src/libstd/panicking.rs:371 4: std::panicking::rust_panic_with_hook at /checkout/src/libstd/panicking.rs:549 5: std::panicking::begin_panic at /checkout/src/libstd/panicking.rs:511 6: std::panicking::begin_panic_fmt at /checkout/src/libstd/panicking.rs:495 7: rust_begin_unwind at /checkout/src/libstd/panicking.rs:471 8: core::panicking::panic_fmt at /checkout/src/libcore/panicking.rs:69 9: core::result::unwrap_failed 10: librespot::player::Player::command 11: ::poll 12: librespot::main 13: std::panicking::try::do_call at /checkout/src/libstd/panicking.rs:454 14: rust_maybe_catch_panic at /checkout/src/libpanic_unwind/lib.rs:98 15: std::rt::lang_start at /checkout/src/libstd/panicking.rs:433 at /checkout/src/libstd/panic.rs:361 at /checkout/src/libstd/rt.rs:57 16: __libc_start_main DEBUG:librespot::spirc: drop Spirc[0] DEBUG:librespot::session: drop Session[0] DEBUG:librespot::mercury: drop MercuryManager DEBUG:librespot::metadata: drop MetadataManager DEBUG:librespot::session: drop Dispatch

Sometimes it happens when I connect to librespot, sometimes when I'm trying to play a song. RUST_BACKTRACE=1 ./librespot --name SpotiPi --verbose INFO:librespot: librespot 2259188 (2017-06-14). Built on 2017-06-26. WARN:mdns: Failed to register IPv6 receiver: Error { repr: Os { code: 97, message: "Address family not supported by protocol" } } DEBUG:librespot::authentication::discovery: Post "/" {} INFO:librespot::session: Connecting to AP "gew1-accesspoint-b-lmrw.ap.spotify.com:4070" INFO:librespot::session: Authenticated as "rudyjerz" ! DEBUG:librespot::session: new Session[0] DEBUG:librespot::spirc: new Spirc[0] DEBUG:librespot::mercury: new MercuryManager DEBUG:librespot::session: Session[0] strong=3 weak=2 INFO:librespot::session: Country: "PL" DEBUG:librespot::player: new Player[0] INFO:librespot::audio_backend::alsa: Using alsa sink DEBUG:librespot::mercury: subscribed uri=hm://remote/3/user/rudyjerz/ count=0 DEBUG:librespot::spirc: kMessageTypeNotify "FRD-L09" da2e94c28e66cb7d70b33fd929ea19d72c4e02d1 1 1501186500996 DEBUG:librespot::spirc: kMessageTypeLoad "FRD-L09" da2e94c28e66cb7d70b33fd929ea19d72c4e02d1 2 0 DEBUG:librespot::player: command=Load(SpotifyId(u128 { high: 16505002772753303400, low: 9692160635951389779 }), false, 673) DEBUG:librespot::metadata: new MetadataManager DEBUG:librespot::spirc: kMessageTypeNotify "FRD-L09" da2e94c28e66cb7d70b33fd929ea19d72c4e02d1 15 1501186500996 thread '' panicked at 'called Result::unwrap() on an Err value: WireError("invalid value for enum: 13")', /checkout/src/libcore/result.rs:859 stack backtrace: DEBUG:librespot::spirc: kMessageTypeNotify "SpotiPi" 70df4a9775279d6f031b370a3c7c8c8de0465c32 2 1501186634551 0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49 1: std::sys_common::backtrace::_print at /checkout/src/libstd/sys_common/backtrace.rs:71 2: std::panicking::default_hook::{{closure}} at /checkout/src/libstd/sys_common/backtrace.rs:60 at /checkout/src/libstd/panicking.rs:355 3: std::panicking::default_hook at /checkout/src/libstd/panicking.rs:371 4: std::panicking::rust_panic_with_hook at /checkout/src/libstd/panicking.rs:549 5: std::panicking::begin_panic at /checkout/src/libstd/panicking.rs:511 6: std::panicking::begin_panic_fmt at /checkout/src/libstd/panicking.rs:495 7: rust_begin_unwind at /checkout/src/libstd/panicking.rs:471 8: core::panicking::panic_fmt at /checkout/src/libcore/panicking.rs:69 9: core::result::unwrap_failed 10: <futures::future::and_then::AndThen<A, B, F> as futures::future::Future>::poll 11: librespot::player::PlayerInternal::load_track 12: librespot::player::PlayerInternal::run 13: std::panicking::try::do_call 14: rust_maybe_catch_panic at /checkout/src/libpanic_unwind/lib.rs:98 15: <F as alloc::boxed::FnBox>::call_box 16: std::sys::imp::thread::Thread::new::thread_start at /checkout/src/liballoc/boxed.rs:650 at /checkout/src/libstd/sys_common/thread.rs:21 at /checkout/src/libstd/sys/unix/thread.rs:84 DEBUG:librespot::player: drop Player[0] DEBUG:librespot::spirc: kMessageTypePlay "FRD-L09" da2e94c28e66cb7d70b33fd929ea19d72c4e02d1 3 0 thread 'main' panicked at 'called Result::unwrap() on an Err value: "SendError(..)"', /checkout/src/libcore/result.rs:859 stack backtrace: 0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49 1: std::sys_common::backtrace::_print at /checkout/src/libstd/sys_common/backtrace.rs:71 2: std::panicking::default_hook::{{closure}} at /checkout/src/libstd/sys_common/backtrace.rs:60 at /checkout/src/libstd/panicking.rs:355 3: std::panicking::default_hook at /checkout/src/libstd/panicking.rs:371 4: std::panicking::rust_panic_with_hook at /checkout/src/libstd/panicking.rs:549 5: std::panicking::begin_panic at /checkout/src/libstd/panicking.rs:511 6: std::panicking::begin_panic_fmt at /checkout/src/libstd/panicking.rs:495 7: rust_begin_unwind at /checkout/src/libstd/panicking.rs:471 8: core::panicking::panic_fmt at /checkout/src/libcore/panicking.rs:69 9: core::result::unwrap_failed 10: librespot::player::Player::command 11: ::poll 12: librespot::main 13: std::panicking::try::do_call at /checkout/src/libstd/panicking.rs:454 14: rust_maybe_catch_panic at /checkout/src/libpanic_unwind/lib.rs:98 15: std::rt::lang_start at /checkout/src/libstd/panicking.rs:433 at /checkout/src/libstd/panic.rs:361 at /checkout/src/libstd/rt.rs:57 16: __libc_start_main DEBUG:librespot::spirc: drop Spirc[0] DEBUG:librespot::session: drop Session[0] DEBUG:librespot::mercury: drop MercuryManager DEBUG:librespot::metadata: drop MetadataManager DEBUG:librespot::session: drop Dispatch

It happens all the time and I'm not able to play any song.

You dont appear to be running the latest code. The first thing you should do, before posting an issue, is run the latest code.

[JKocerka]

You are right. My bad. I build it the previous day, but I build the debug version and run the release.

[kingosticks]

Easy mistake I've done many times! No worries.