[INFO] updating cached repository https://github.com/mattias-p/digraph123
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6d75d23e0842ed2e866dee9561505b673b235a05
[INFO] checking mattias-p/digraph123 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmattias-p%2Fdigraph123" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mattias-p/digraph123 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mattias-p/digraph123
[INFO] finished tweaking git repo https://github.com/mattias-p/digraph123
[INFO] tweaked toml for git repo https://github.com/mattias-p/digraph123 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mattias-p/digraph123 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-2/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/mattias-p/vorbis-rs.git`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 066595919b100a0eec94a2d8fe9c42429fdd5a022d0df113647e3b682f927feb
[INFO] running `"docker" "start" "-a" "066595919b100a0eec94a2d8fe9c42429fdd5a022d0df113647e3b682f927feb"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stderr]    Compiling ole32-sys v0.2.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]    Compiling alsa-sys v0.3.0
[INFO] [stderr]    Compiling ogg-sys v0.0.9
[INFO] [stderr]    Compiling vorbis-sys v0.1.0
[INFO] [stderr]    Compiling vorbisfile-sys v0.0.8
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking vorbis v0.0.14 (https://github.com/mattias-p/vorbis-rs.git?branch=comments#089bab7d)
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking cpal v0.2.12
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking digraph123 v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/stream.rs:55:18
[INFO] [stderr]    |
[INFO] [stderr] 55 |             Some(try!(first)
[INFO] [stderr]    |                  ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/stream.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         try!(stream.load());
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:105:32
[INFO] [stderr]     |
[INFO] [stderr] 105 |                     let data = try!(vorbis_packet).data;
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:144:23
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let decoder = try!(vorbis::Decoder::new(file));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:145:28
[INFO] [stderr]     |
[INFO] [stderr] 145 |         let splice_point = try!(decoder.get_comment("SPLICEPOINT"));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:149:60
[INFO] [stderr]     |
[INFO] [stderr] 149 | ...                   let value = try!(u64::from_str(value));
[INFO] [stderr]     |                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:155:28
[INFO] [stderr]     |
[INFO] [stderr] 155 |         let splice_point = try!(splice_point);
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:156:22
[INFO] [stderr]     |
[INFO] [stderr] 156 |         let stream = try!(VorbisStream::new(decoder));
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:196:13
[INFO] [stderr]     |
[INFO] [stderr] 196 |             try!(self.stream.load());
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:223:25
[INFO] [stderr]     |
[INFO] [stderr] 223 |             let tails = try!(player.load());
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:254:26
[INFO] [stderr]     |
[INFO] [stderr] 254 |             tails.extend(try!(new_tails));
[INFO] [stderr]     |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:257:34
[INFO] [stderr]     |
[INFO] [stderr] 257 |                     self.track = try!(new_track);
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:62:20
[INFO] [stderr]    |
[INFO] [stderr] 62 |         let file = try!(fs::File::open(path));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:63:27
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut decoder = try!(vorbis::Decoder::new(file));
[INFO] [stderr]    |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:64:22
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let packet = try!(decoder.packets().next().expect("first packet"));
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:105:36
[INFO] [stderr]     |
[INFO] [stderr] 105 |             Ok(Some((voice_config, try!(stream::Player::new(Box::new(tracks))))))
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:128:26
[INFO] [stderr]     |
[INFO] [stderr] 128 |             for entry in try!(fs::read_dir(dir)) {
[INFO] [stderr]     |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:129:29
[INFO] [stderr]     |
[INFO] [stderr] 129 |                 let entry = try!(entry);
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:134:51
[INFO] [stderr]     |
[INFO] [stderr] 134 |             if let Some((voice_config, player)) = try!(player_builder.build()) {
[INFO] [stderr]     |                                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/digraph.rs:9:44
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn into_random_walk(self, rng: Box<rand::Rng>) -> IntoRandomWalk {
[INFO] [stderr]   |                                            ^^^^^^^^^ help: use `dyn`: `dyn rand::Rng`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/digraph.rs:66:14
[INFO] [stderr]    |
[INFO] [stderr] 66 |     rng: Box<rand::Rng>,
[INFO] [stderr]    |              ^^^^^^^^^ help: use `dyn`: `dyn rand::Rng`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/stream.rs:19:42
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn load(&mut self) -> Result<Vec<Box<Stream>>>;
[INFO] [stderr]    |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/stream.rs:39:42
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn load(&mut self) -> Result<Vec<Box<Stream>>> {
[INFO] [stderr]    |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/stream.rs:98:42
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn load(&mut self) -> Result<Vec<Box<Stream>>> {
[INFO] [stderr]    |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:121:17
[INFO] [stderr]     |
[INFO] [stderr] 121 |     stream: Box<Stream>,
[INFO] [stderr]     |                 ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:194:42
[INFO] [stderr]     |
[INFO] [stderr] 194 |     fn load(&mut self) -> Result<Vec<Box<Stream>>> {
[INFO] [stderr]     |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:212:20
[INFO] [stderr]     |
[INFO] [stderr] 212 |     play_list: Box<Iterator<Item = Result<Track>>>,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<Track>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:216:28
[INFO] [stderr]     |
[INFO] [stderr] 216 |     pub fn new(tracks: Box<Iterator<Item = Result<Track>>>) -> Result<Player> {
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<Track>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:246:42
[INFO] [stderr]     |
[INFO] [stderr] 246 |     fn load(&mut self) -> Result<Vec<Box<Stream>>> {
[INFO] [stderr]     |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:268:22
[INFO] [stderr]     |
[INFO] [stderr] 268 |     streams: Vec<Box<Stream>>,
[INFO] [stderr]     |                      ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:272:33
[INFO] [stderr]     |
[INFO] [stderr] 272 |     pub fn new(streams: Vec<Box<Stream>>) -> Mixer {
[INFO] [stderr]     |                                 ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:306:42
[INFO] [stderr]     |
[INFO] [stderr] 306 |     fn load(&mut self) -> Result<Vec<Box<Stream>>> {
[INFO] [stderr]     |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:368:32
[INFO] [stderr]     |
[INFO] [stderr] 368 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:371:49
[INFO] [stderr]     |
[INFO] [stderr] 371 |             &Error::Io(ref err) => Some(err as &error::Error),
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:372:52
[INFO] [stderr]     |
[INFO] [stderr] 372 |             &Error::Parse(ref err) => Some(err as &error::Error),
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:373:53
[INFO] [stderr]     |
[INFO] [stderr] 373 |             &Error::Vorbis(ref err) => Some(err as &error::Error),
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:374:62
[INFO] [stderr]     |
[INFO] [stderr] 374 |             &Error::File(_, ref err) => Some(err.deref() as &error::Error),
[INFO] [stderr]     |                                                              ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:375:61
[INFO] [stderr]     |
[INFO] [stderr] 375 |             &Error::Dir(_, ref err) => Some(err.deref() as &error::Error),
[INFO] [stderr]     |                                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:113:22
[INFO] [stderr]     |
[INFO] [stderr] 113 |     streams: Vec<Box<stream::Stream>>,
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^ help: use `dyn`: `dyn stream::Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:27:32
[INFO] [stderr]     |
[INFO] [stderr] 27  |         let mut err = $err as &std::error::Error;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] ...
[INFO] [stderr] 131 |                     print_error!(&err, "warning: ignoring file");
[INFO] [stderr]     |                     --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:27:32
[INFO] [stderr]     |
[INFO] [stderr] 27  |           let mut err = $err as &std::error::Error;
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] ...
[INFO] [stderr] 163 |           let formats = insist!(formats,
[INFO] [stderr]     |  _______________________-
[INFO] [stderr] 164 | |                               "fatal: failed to get list of supported audio formats");
[INFO] [stderr]     | |_____________________________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:27:32
[INFO] [stderr]     |
[INFO] [stderr] 27  |         let mut err = $err as &std::error::Error;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] ...
[INFO] [stderr] 195 |             print_error!(&err, "warning: ignoring directory");
[INFO] [stderr]     |             -------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:27:32
[INFO] [stderr]     |
[INFO] [stderr] 27  |           let mut err = $err as &std::error::Error;
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] ...
[INFO] [stderr] 198 |       let (voice_config, coefficient, mut mixer) = insist!(mixer_builder.build(),
[INFO] [stderr]     |  __________________________________________________-
[INFO] [stderr] 199 | |                                                          "fatal: failed to construct mixer");
[INFO] [stderr]     | |____________________________________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:27:32
[INFO] [stderr]     |
[INFO] [stderr] 27  |         let mut err = $err as &std::error::Error;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] ...
[INFO] [stderr] 211 |                 print_error!(&err, "warning: an error occurred loading the mixer");
[INFO] [stderr]     |                 ------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 | /         lazy_static! {
[INFO] [stderr] 70 | |             static ref SECTION_RE: regex::Regex = regex::Regex::new(r"^([^-]+)-([^-]+)(?:-(.+))?.ogg$").unwrap();
[INFO] [stderr] 71 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/stream.rs:55:18
[INFO] [stderr]    |
[INFO] [stderr] 55 |             Some(try!(first)
[INFO] [stderr]    |                  ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/stream.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 |         try!(stream.load());
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:105:32
[INFO] [stderr]     |
[INFO] [stderr] 105 |                     let data = try!(vorbis_packet).data;
[INFO] [stderr]     |                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:144:23
[INFO] [stderr]     |
[INFO] [stderr] 144 |         let decoder = try!(vorbis::Decoder::new(file));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:145:28
[INFO] [stderr]     |
[INFO] [stderr] 145 |         let splice_point = try!(decoder.get_comment("SPLICEPOINT"));
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:149:60
[INFO] [stderr]     |
[INFO] [stderr] 149 | ...                   let value = try!(u64::from_str(value));
[INFO] [stderr]     |                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:155:28
[INFO] [stderr]     |
[INFO] [stderr] 155 |         let splice_point = try!(splice_point);
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:156:22
[INFO] [stderr]     |
[INFO] [stderr] 156 |         let stream = try!(VorbisStream::new(decoder));
[INFO] [stderr]     |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:196:13
[INFO] [stderr]     |
[INFO] [stderr] 196 |             try!(self.stream.load());
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:223:25
[INFO] [stderr]     |
[INFO] [stderr] 223 |             let tails = try!(player.load());
[INFO] [stderr]     |                         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:254:26
[INFO] [stderr]     |
[INFO] [stderr] 254 |             tails.extend(try!(new_tails));
[INFO] [stderr]     |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/stream.rs:257:34
[INFO] [stderr]     |
[INFO] [stderr] 257 |                     self.track = try!(new_track);
[INFO] [stderr]     |                                  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:62:20
[INFO] [stderr]    |
[INFO] [stderr] 62 |         let file = try!(fs::File::open(path));
[INFO] [stderr]    |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:63:27
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut decoder = try!(vorbis::Decoder::new(file));
[INFO] [stderr]    |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:64:22
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let packet = try!(decoder.packets().next().expect("first packet"));
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:105:36
[INFO] [stderr]     |
[INFO] [stderr] 105 |             Ok(Some((voice_config, try!(stream::Player::new(Box::new(tracks))))))
[INFO] [stderr]     |                                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:128:26
[INFO] [stderr]     |
[INFO] [stderr] 128 |             for entry in try!(fs::read_dir(dir)) {
[INFO] [stderr]     |                          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:129:29
[INFO] [stderr]     |
[INFO] [stderr] 129 |                 let entry = try!(entry);
[INFO] [stderr]     |                             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:134:51
[INFO] [stderr]     |
[INFO] [stderr] 134 |             if let Some((voice_config, player)) = try!(player_builder.build()) {
[INFO] [stderr]     |                                                   ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/digraph.rs:9:44
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn into_random_walk(self, rng: Box<rand::Rng>) -> IntoRandomWalk {
[INFO] [stderr]   |                                            ^^^^^^^^^ help: use `dyn`: `dyn rand::Rng`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/digraph.rs:66:14
[INFO] [stderr]    |
[INFO] [stderr] 66 |     rng: Box<rand::Rng>,
[INFO] [stderr]    |              ^^^^^^^^^ help: use `dyn`: `dyn rand::Rng`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/stream.rs:19:42
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn load(&mut self) -> Result<Vec<Box<Stream>>>;
[INFO] [stderr]    |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/stream.rs:39:42
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn load(&mut self) -> Result<Vec<Box<Stream>>> {
[INFO] [stderr]    |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/stream.rs:98:42
[INFO] [stderr]    |
[INFO] [stderr] 98 |     fn load(&mut self) -> Result<Vec<Box<Stream>>> {
[INFO] [stderr]    |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:121:17
[INFO] [stderr]     |
[INFO] [stderr] 121 |     stream: Box<Stream>,
[INFO] [stderr]     |                 ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:194:42
[INFO] [stderr]     |
[INFO] [stderr] 194 |     fn load(&mut self) -> Result<Vec<Box<Stream>>> {
[INFO] [stderr]     |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:212:20
[INFO] [stderr]     |
[INFO] [stderr] 212 |     play_list: Box<Iterator<Item = Result<Track>>>,
[INFO] [stderr]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<Track>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:216:28
[INFO] [stderr]     |
[INFO] [stderr] 216 |     pub fn new(tracks: Box<Iterator<Item = Result<Track>>>) -> Result<Player> {
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<Track>>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:246:42
[INFO] [stderr]     |
[INFO] [stderr] 246 |     fn load(&mut self) -> Result<Vec<Box<Stream>>> {
[INFO] [stderr]     |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:268:22
[INFO] [stderr]     |
[INFO] [stderr] 268 |     streams: Vec<Box<Stream>>,
[INFO] [stderr]     |                      ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:272:33
[INFO] [stderr]     |
[INFO] [stderr] 272 |     pub fn new(streams: Vec<Box<Stream>>) -> Mixer {
[INFO] [stderr]     |                                 ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:306:42
[INFO] [stderr]     |
[INFO] [stderr] 306 |     fn load(&mut self) -> Result<Vec<Box<Stream>>> {
[INFO] [stderr]     |                                          ^^^^^^ help: use `dyn`: `dyn Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:368:32
[INFO] [stderr]     |
[INFO] [stderr] 368 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:371:49
[INFO] [stderr]     |
[INFO] [stderr] 371 |             &Error::Io(ref err) => Some(err as &error::Error),
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:372:52
[INFO] [stderr]     |
[INFO] [stderr] 372 |             &Error::Parse(ref err) => Some(err as &error::Error),
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:373:53
[INFO] [stderr]     |
[INFO] [stderr] 373 |             &Error::Vorbis(ref err) => Some(err as &error::Error),
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:374:62
[INFO] [stderr]     |
[INFO] [stderr] 374 |             &Error::File(_, ref err) => Some(err.deref() as &error::Error),
[INFO] [stderr]     |                                                              ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/stream.rs:375:61
[INFO] [stderr]     |
[INFO] [stderr] 375 |             &Error::Dir(_, ref err) => Some(err.deref() as &error::Error),
[INFO] [stderr]     |                                                             ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:113:22
[INFO] [stderr]     |
[INFO] [stderr] 113 |     streams: Vec<Box<stream::Stream>>,
[INFO] [stderr]     |                      ^^^^^^^^^^^^^^ help: use `dyn`: `dyn stream::Stream`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:27:32
[INFO] [stderr]     |
[INFO] [stderr] 27  |         let mut err = $err as &std::error::Error;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] ...
[INFO] [stderr] 131 |                     print_error!(&err, "warning: ignoring file");
[INFO] [stderr]     |                     --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:27:32
[INFO] [stderr]     |
[INFO] [stderr] 27  |           let mut err = $err as &std::error::Error;
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] ...
[INFO] [stderr] 163 |           let formats = insist!(formats,
[INFO] [stderr]     |  _______________________-
[INFO] [stderr] 164 | |                               "fatal: failed to get list of supported audio formats");
[INFO] [stderr]     | |_____________________________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:27:32
[INFO] [stderr]     |
[INFO] [stderr] 27  |         let mut err = $err as &std::error::Error;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] ...
[INFO] [stderr] 195 |             print_error!(&err, "warning: ignoring directory");
[INFO] [stderr]     |             -------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:27:32
[INFO] [stderr]     |
[INFO] [stderr] 27  |           let mut err = $err as &std::error::Error;
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] ...
[INFO] [stderr] 198 |       let (voice_config, coefficient, mut mixer) = insist!(mixer_builder.build(),
[INFO] [stderr]     |  __________________________________________________-
[INFO] [stderr] 199 | |                                                          "fatal: failed to construct mixer");
[INFO] [stderr]     | |____________________________________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:27:32
[INFO] [stderr]     |
[INFO] [stderr] 27  |         let mut err = $err as &std::error::Error;
[INFO] [stderr]     |                                ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] ...
[INFO] [stderr] 211 |                 print_error!(&err, "warning: an error occurred loading the mixer");
[INFO] [stderr]     |                 ------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 | /         lazy_static! {
[INFO] [stderr] 70 | |             static ref SECTION_RE: regex::Regex = regex::Regex::new(r"^([^-]+)-([^-]+)(?:-(.+))?.ogg$").unwrap();
[INFO] [stderr] 71 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 | /         lazy_static! {
[INFO] [stderr] 70 | |             static ref SECTION_RE: regex::Regex = regex::Regex::new(r"^([^-]+)-([^-]+)(?:-(.+))?.ogg$").unwrap();
[INFO] [stderr] 71 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/main.rs:69:9
[INFO] [stderr]    |
[INFO] [stderr] 69 | /         lazy_static! {
[INFO] [stderr] 70 | |             static ref SECTION_RE: regex::Regex = regex::Regex::new(r"^([^-]+)-([^-]+)(?:-(.+))?.ogg$").unwrap();
[INFO] [stderr] 71 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:139:24
[INFO] [stderr]     |
[INFO] [stderr] 139 |                        error::Error::description(&why))
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:139:24
[INFO] [stderr]     |
[INFO] [stderr] 139 |                        error::Error::description(&why))
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:29:37
[INFO] [stderr]     |
[INFO] [stderr] 29  |         while let Some(cause) = err.cause() {
[INFO] [stderr]     |                                     ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 131 |                     print_error!(&err, "warning: ignoring file");
[INFO] [stderr]     |                     --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:29:37
[INFO] [stderr]     |
[INFO] [stderr] 29  |         while let Some(cause) = err.cause() {
[INFO] [stderr]     |                                     ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 131 |                     print_error!(&err, "warning: ignoring file");
[INFO] [stderr]     |                     --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:29:37
[INFO] [stderr]     |
[INFO] [stderr] 29  |           while let Some(cause) = err.cause() {
[INFO] [stderr]     |                                       ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 163 |           let formats = insist!(formats,
[INFO] [stderr]     |  _______________________-
[INFO] [stderr] 164 | |                               "fatal: failed to get list of supported audio formats");
[INFO] [stderr]     | |_____________________________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:29:37
[INFO] [stderr]     |
[INFO] [stderr] 29  |           while let Some(cause) = err.cause() {
[INFO] [stderr]     |                                       ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 163 |           let formats = insist!(formats,
[INFO] [stderr]     |  _______________________-
[INFO] [stderr] 164 | |                               "fatal: failed to get list of supported audio formats");
[INFO] [stderr]     | |_____________________________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:29:37
[INFO] [stderr]     |
[INFO] [stderr] 29  |         while let Some(cause) = err.cause() {
[INFO] [stderr]     |                                     ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 195 |             print_error!(&err, "warning: ignoring directory");
[INFO] [stderr]     |             -------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:29:37
[INFO] [stderr]     |
[INFO] [stderr] 29  |           while let Some(cause) = err.cause() {
[INFO] [stderr]     |                                       ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 198 |       let (voice_config, coefficient, mut mixer) = insist!(mixer_builder.build(),
[INFO] [stderr]     |  __________________________________________________-
[INFO] [stderr] 199 | |                                                          "fatal: failed to construct mixer");
[INFO] [stderr]     | |____________________________________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:29:37
[INFO] [stderr]     |
[INFO] [stderr] 29  |         while let Some(cause) = err.cause() {
[INFO] [stderr]     |                                     ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 195 |             print_error!(&err, "warning: ignoring directory");
[INFO] [stderr]     |             -------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:29:37
[INFO] [stderr]     |
[INFO] [stderr] 29  |           while let Some(cause) = err.cause() {
[INFO] [stderr]     |                                       ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 198 |       let (voice_config, coefficient, mut mixer) = insist!(mixer_builder.build(),
[INFO] [stderr]     |  __________________________________________________-
[INFO] [stderr] 199 | |                                                          "fatal: failed to construct mixer");
[INFO] [stderr]     | |____________________________________________________________________________________________- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:29:37
[INFO] [stderr]     |
[INFO] [stderr] 29  |         while let Some(cause) = err.cause() {
[INFO] [stderr]     |                                     ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 211 |                 print_error!(&err, "warning: an error occurred loading the mixer");
[INFO] [stderr]     |                 ------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/main.rs:29:37
[INFO] [stderr]     |
[INFO] [stderr] 29  |         while let Some(cause) = err.cause() {
[INFO] [stderr]     |                                     ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 211 |                 print_error!(&err, "warning: an error occurred loading the mixer");
[INFO] [stderr]     |                 ------------------------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:413:61
[INFO] [stderr]     |
[INFO] [stderr] 413 |             &::stream::Error::Io(_) => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:414:64
[INFO] [stderr]     |
[INFO] [stderr] 414 |             &::stream::Error::Parse(_) => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:415:65
[INFO] [stderr]     |
[INFO] [stderr] 415 |             &::stream::Error::Vorbis(_) => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                                 ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:418:46
[INFO] [stderr]     |
[INFO] [stderr] 418 |                 write!(f, "{}:\n * {}", self.description(), parts.join("\n * "))
[INFO] [stderr]     |                                              ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:420:67
[INFO] [stderr]     |
[INFO] [stderr] 420 |             &::stream::Error::AudioFormat => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:425:63
[INFO] [stderr]     |
[INFO] [stderr] 425 |             &::stream::Error::NoItems => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:413:61
[INFO] [stderr]     |
[INFO] [stderr] 413 |             &::stream::Error::Io(_) => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:414:64
[INFO] [stderr]     |
[INFO] [stderr] 414 |             &::stream::Error::Parse(_) => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                                ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:415:65
[INFO] [stderr]     |
[INFO] [stderr] 415 |             &::stream::Error::Vorbis(_) => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                                 ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:418:46
[INFO] [stderr]     |
[INFO] [stderr] 418 |                 write!(f, "{}:\n * {}", self.description(), parts.join("\n * "))
[INFO] [stderr]     |                                              ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:420:67
[INFO] [stderr]     |
[INFO] [stderr] 420 |             &::stream::Error::AudioFormat => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]    --> src/stream.rs:425:63
[INFO] [stderr]     |
[INFO] [stderr] 425 |             &::stream::Error::NoItems => write!(f, "{}", self.description()),
[INFO] [stderr]     |                                                               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 58 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 58 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.81s
[INFO] running `"docker" "inspect" "066595919b100a0eec94a2d8fe9c42429fdd5a022d0df113647e3b682f927feb"`
[INFO] running `"docker" "rm" "-f" "066595919b100a0eec94a2d8fe9c42429fdd5a022d0df113647e3b682f927feb"`
[INFO] [stdout] 066595919b100a0eec94a2d8fe9c42429fdd5a022d0df113647e3b682f927feb