[INFO] updating cached repository https://github.com/MarimeGui/smf_lib
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/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] bd6124554f3065e92c2da9c25568799fd7c50927
[INFO] testing MarimeGui/smf_lib against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FMarimeGui%2Fsmf_lib" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MarimeGui/smf_lib on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/MarimeGui/smf_lib
[INFO] finished tweaking git repo https://github.com/MarimeGui/smf_lib
[INFO] tweaked toml for git repo https://github.com/MarimeGui/smf_lib written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/MarimeGui/smf_lib already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 4c4b044008afe1ac1e9294e1c53daf48900bf4e90a16c8be391a1d76f03527a9
[INFO] running `"docker" "start" "-a" "4c4b044008afe1ac1e9294e1c53daf48900bf4e90a16c8be391a1d76f03527a9"`
[INFO] [stderr]    Compiling ez_io v0.1.0 (https://github.com/MarimeGui/ez_io#d2a48131)
[INFO] [stderr]    Compiling smf_lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:31:47
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn read_vlv(&mut self) -> Result<VLV, Box<Error>> {
[INFO] [stderr]    |                                               ^^^^^ help: use `dyn`: `dyn Error`
[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/file/header/mod.rs:43:79
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn read<R: Read + Seek>(reader: &mut R) -> Result<SMFHeaderChunk, Box<Error>> {
[INFO] [stderr]    |                                                                               ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/midi.rs:14:101
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<NoteChange, Box<Error>> {
[INFO] [stderr]    |                                                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/midi.rs:35:112
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<PolyphonicKeyPressure, Box<Error>> {
[INFO] [stderr]    |                                                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/midi.rs:56:107
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<ControllerChange, Box<Error>> {
[INFO] [stderr]    |                                                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/midi.rs:76:104
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<ProgramChange, Box<Error>> {
[INFO] [stderr]    |                                                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/midi.rs:94:109
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<ChannelKeyPressure, Box<Error>> {
[INFO] [stderr]    |                                                                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/midi.rs:112:100
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<PitchBend, Box<Error>> {
[INFO] [stderr]     |                                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/sysex.rs:12:63
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn read<R: Read>(reader: &mut R) -> Result<Sysex, Box<Error>> {
[INFO] [stderr]    |                                                               ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:13:72
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn read<R: Read>(reader: &mut R) -> Result<SequenceNumber, Box<Error>> {
[INFO] [stderr]    |                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:27:75
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn read<R: Read>(reader: &mut R, length: u32) -> Result<Text, Box<Error>> {
[INFO] [stderr]    |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:43:75
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn read<R: Read>(reader: &mut R) -> Result<MIDIChannelPrefix, Box<Error>> {
[INFO] [stderr]    |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:57:66
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn read<R: Read>(reader: &mut R) -> Result<MIDIPort, Box<Error>> {
[INFO] [stderr]    |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:74:66
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn read<R: Read>(reader: &mut R) -> Result<SetTempo, Box<Error>> {
[INFO] [stderr]    |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:92:69
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn read<R: Read>(reader: &mut R) -> Result<SMTPEOffset, Box<Error>> {
[INFO] [stderr]    |                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/meta.rs:117:71
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn read<R: Read>(reader: &mut R) -> Result<TimeSignature, Box<Error>> {
[INFO] [stderr]     |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/meta.rs:138:70
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn read<R: Read>(reader: &mut R) -> Result<KeySignature, Box<Error>> {
[INFO] [stderr]     |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/meta.rs:157:94
[INFO] [stderr]     |
[INFO] [stderr] 157 |     pub fn read<R: Read>(reader: &mut R, total_length: u32) -> Result<SequencerSpecific, Box<Error>> {
[INFO] [stderr]     |                                                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/mod.rs:66:115
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn read<R: Read>(reader: &mut R, code_byte: u8, running_status_byte: Option<u8>) -> Result<MidiEvent, Box<Error>> {
[INFO] [stderr]    |                                                                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/mod.rs:130:83
[INFO] [stderr]     |
[INFO] [stderr] 130 |     pub fn read<R: Read>(reader: &mut R, code_byte: u8) -> Result<SysexEvent, Box<Error>> {
[INFO] [stderr]     |                                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/mod.rs:180:74
[INFO] [stderr]     |
[INFO] [stderr] 180 |     pub fn read<R: Read + Seek>(reader: &mut R) -> Result<MetaEvent, Box<Error>> {
[INFO] [stderr]     |                                                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/mod.rs:276:96
[INFO] [stderr]     |
[INFO] [stderr] 276 |     pub fn new<R: Read + Seek>(reader: &mut R, last_event: Option<Event>) -> Result<Event, Box<Error>> {
[INFO] [stderr]     |                                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/mod.rs:18:101
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new<R: Read + Seek>(reader: &mut R, last_event: Option<Event>) -> Result<TrackEvent, Box<Error>> {
[INFO] [stderr]    |                                                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/mod.rs:22:78
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn read<R: Read + Seek>(reader: &mut R) -> Result<SMFTrackChunk, Box<Error>> {
[INFO] [stderr]    |                                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/mod.rs:21:68
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn read<R: Read + Seek>(reader: &mut R) -> Result<SMF, Box<Error>> {
[INFO] [stderr]    |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `"docker" "inspect" "4c4b044008afe1ac1e9294e1c53daf48900bf4e90a16c8be391a1d76f03527a9"`
[INFO] running `"docker" "rm" "-f" "4c4b044008afe1ac1e9294e1c53daf48900bf4e90a16c8be391a1d76f03527a9"`
[INFO] [stdout] 4c4b044008afe1ac1e9294e1c53daf48900bf4e90a16c8be391a1d76f03527a9
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8311583e3bf7af8b661fc6f99a54ef4f57ba65dd0dd962ce7edef0380307d73f
[INFO] running `"docker" "start" "-a" "8311583e3bf7af8b661fc6f99a54ef4f57ba65dd0dd962ce7edef0380307d73f"`
[INFO] [stderr]    Compiling smf_lib v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:31:47
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn read_vlv(&mut self) -> Result<VLV, Box<Error>> {
[INFO] [stderr]    |                                               ^^^^^ help: use `dyn`: `dyn Error`
[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/file/header/mod.rs:43:79
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn read<R: Read + Seek>(reader: &mut R) -> Result<SMFHeaderChunk, Box<Error>> {
[INFO] [stderr]    |                                                                               ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/midi.rs:14:101
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<NoteChange, Box<Error>> {
[INFO] [stderr]    |                                                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/midi.rs:35:112
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<PolyphonicKeyPressure, Box<Error>> {
[INFO] [stderr]    |                                                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/midi.rs:56:107
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<ControllerChange, Box<Error>> {
[INFO] [stderr]    |                                                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/midi.rs:76:104
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<ProgramChange, Box<Error>> {
[INFO] [stderr]    |                                                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/midi.rs:94:109
[INFO] [stderr]    |
[INFO] [stderr] 94 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<ChannelKeyPressure, Box<Error>> {
[INFO] [stderr]    |                                                                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/midi.rs:112:100
[INFO] [stderr]     |
[INFO] [stderr] 112 |     pub fn read<R: Read>(reader: &mut R, running_status_byte: Option<u8>) -> Result<PitchBend, Box<Error>> {
[INFO] [stderr]     |                                                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/sysex.rs:12:63
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn read<R: Read>(reader: &mut R) -> Result<Sysex, Box<Error>> {
[INFO] [stderr]    |                                                               ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:13:72
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn read<R: Read>(reader: &mut R) -> Result<SequenceNumber, Box<Error>> {
[INFO] [stderr]    |                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:27:75
[INFO] [stderr]    |
[INFO] [stderr] 27 |     pub fn read<R: Read>(reader: &mut R, length: u32) -> Result<Text, Box<Error>> {
[INFO] [stderr]    |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:43:75
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn read<R: Read>(reader: &mut R) -> Result<MIDIChannelPrefix, Box<Error>> {
[INFO] [stderr]    |                                                                           ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:57:66
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn read<R: Read>(reader: &mut R) -> Result<MIDIPort, Box<Error>> {
[INFO] [stderr]    |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:74:66
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn read<R: Read>(reader: &mut R) -> Result<SetTempo, Box<Error>> {
[INFO] [stderr]    |                                                                  ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/meta.rs:92:69
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn read<R: Read>(reader: &mut R) -> Result<SMTPEOffset, Box<Error>> {
[INFO] [stderr]    |                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/meta.rs:117:71
[INFO] [stderr]     |
[INFO] [stderr] 117 |     pub fn read<R: Read>(reader: &mut R) -> Result<TimeSignature, Box<Error>> {
[INFO] [stderr]     |                                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/meta.rs:138:70
[INFO] [stderr]     |
[INFO] [stderr] 138 |     pub fn read<R: Read>(reader: &mut R) -> Result<KeySignature, Box<Error>> {
[INFO] [stderr]     |                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/meta.rs:157:94
[INFO] [stderr]     |
[INFO] [stderr] 157 |     pub fn read<R: Read>(reader: &mut R, total_length: u32) -> Result<SequencerSpecific, Box<Error>> {
[INFO] [stderr]     |                                                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/event/mod.rs:66:115
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn read<R: Read>(reader: &mut R, code_byte: u8, running_status_byte: Option<u8>) -> Result<MidiEvent, Box<Error>> {
[INFO] [stderr]    |                                                                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/mod.rs:130:83
[INFO] [stderr]     |
[INFO] [stderr] 130 |     pub fn read<R: Read>(reader: &mut R, code_byte: u8) -> Result<SysexEvent, Box<Error>> {
[INFO] [stderr]     |                                                                                   ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/mod.rs:180:74
[INFO] [stderr]     |
[INFO] [stderr] 180 |     pub fn read<R: Read + Seek>(reader: &mut R) -> Result<MetaEvent, Box<Error>> {
[INFO] [stderr]     |                                                                          ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/file/track/data/event/mod.rs:276:96
[INFO] [stderr]     |
[INFO] [stderr] 276 |     pub fn new<R: Read + Seek>(reader: &mut R, last_event: Option<Event>) -> Result<Event, Box<Error>> {
[INFO] [stderr]     |                                                                                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/data/mod.rs:18:101
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new<R: Read + Seek>(reader: &mut R, last_event: Option<Event>) -> Result<TrackEvent, Box<Error>> {
[INFO] [stderr]    |                                                                                                     ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/track/mod.rs:22:78
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn read<R: Read + Seek>(reader: &mut R) -> Result<SMFTrackChunk, Box<Error>> {
[INFO] [stderr]    |                                                                              ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/file/mod.rs:21:68
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn read<R: Read + Seek>(reader: &mut R) -> Result<SMF, Box<Error>> {
[INFO] [stderr]    |                                                                    ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `"docker" "inspect" "8311583e3bf7af8b661fc6f99a54ef4f57ba65dd0dd962ce7edef0380307d73f"`
[INFO] running `"docker" "rm" "-f" "8311583e3bf7af8b661fc6f99a54ef4f57ba65dd0dd962ce7edef0380307d73f"`
[INFO] [stdout] 8311583e3bf7af8b661fc6f99a54ef4f57ba65dd0dd962ce7edef0380307d73f
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 38e29c8e308ffdf98f82db65aa0db4ae42632d1de6c6342ee3f5bca12094050e
[INFO] running `"docker" "start" "-a" "38e29c8e308ffdf98f82db65aa0db4ae42632d1de6c6342ee3f5bca12094050e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/smf_lib-a794597c5eb214b4
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests smf_lib
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "38e29c8e308ffdf98f82db65aa0db4ae42632d1de6c6342ee3f5bca12094050e"`
[INFO] running `"docker" "rm" "-f" "38e29c8e308ffdf98f82db65aa0db4ae42632d1de6c6342ee3f5bca12094050e"`
[INFO] [stdout] 38e29c8e308ffdf98f82db65aa0db4ae42632d1de6c6342ee3f5bca12094050e