[INFO] fetching crate asciimusic 0.1.3...
[INFO] testing asciimusic-0.1.3 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate asciimusic 0.1.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate asciimusic 0.1.3
[INFO] finished tweaking crates.io crate asciimusic 0.1.3
[INFO] tweaked toml for crates.io crate asciimusic 0.1.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate asciimusic 0.1.3 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate asciimusic 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 299338054deca3b70fe9d1570f0e0c365d8f33d03f5c3a040f9b4f68a80a3be7
[INFO] running `Command { std: "docker" "start" "-a" "299338054deca3b70fe9d1570f0e0c365d8f33d03f5c3a040f9b4f68a80a3be7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "299338054deca3b70fe9d1570f0e0c365d8f33d03f5c3a040f9b4f68a80a3be7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "299338054deca3b70fe9d1570f0e0c365d8f33d03f5c3a040f9b4f68a80a3be7", kill_on_drop: false }`
[INFO] [stdout] 299338054deca3b70fe9d1570f0e0c365d8f33d03f5c3a040f9b4f68a80a3be7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 959a219a997584b5194b0f38100b29386cd8dd5f8f1d057d995871807a87d5bc
[INFO] running `Command { std: "docker" "start" "-a" "959a219a997584b5194b0f38100b29386cd8dd5f8f1d057d995871807a87d5bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling asciimusic v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/song.rs:105:36
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let instrument = match Instrument::from_id(instrument_id) {
[INFO] [stdout]     |                                    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let instrument = match <dyn Instrument>::from_id(instrument_id) {
[INFO] [stdout]     |                                    ++++           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ToBase32` is never used
[INFO] [stdout]   --> src/base32.rs:38:11
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub trait ToBase32: Sized + fmt::Debug {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/voice.rs:87:32
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 self.instrument.borrow().sample(self.ramp / self.sample_rate)
[INFO] [stdout]    |                                ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `dyn Instrument` does not implement `Borrow`, so calling `borrow` on `&dyn Instrument` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/song.rs:185:28
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn voice_iterators(&mut self) -> Vec<VoiceIterator> {
[INFO] [stdout]     |                            ^^^^^^^^^         ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn voice_iterators(&mut self) -> Vec<VoiceIterator<'_>> {
[INFO] [stdout]     |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/song.rs:209:20
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn samples(&mut self) -> SongIterator {
[INFO] [stdout]     |                    ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn samples(&mut self) -> SongIterator<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "959a219a997584b5194b0f38100b29386cd8dd5f8f1d057d995871807a87d5bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "959a219a997584b5194b0f38100b29386cd8dd5f8f1d057d995871807a87d5bc", kill_on_drop: false }`
[INFO] [stdout] 959a219a997584b5194b0f38100b29386cd8dd5f8f1d057d995871807a87d5bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14c6413d58393354b23153e3fd6a7aa9aa7f92cf98c73657bcebb6cf711e65a8
[INFO] running `Command { std: "docker" "start" "-a" "14c6413d58393354b23153e3fd6a7aa9aa7f92cf98c73657bcebb6cf711e65a8", kill_on_drop: false }`
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/song.rs:105:36
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let instrument = match Instrument::from_id(instrument_id) {
[INFO] [stdout]     |                                    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let instrument = match <dyn Instrument>::from_id(instrument_id) {
[INFO] [stdout]     |                                    ++++           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ToBase32` is never used
[INFO] [stdout]   --> src/base32.rs:38:11
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub trait ToBase32: Sized + fmt::Debug {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/voice.rs:87:32
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 self.instrument.borrow().sample(self.ramp / self.sample_rate)
[INFO] [stdout]    |                                ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `dyn Instrument` does not implement `Borrow`, so calling `borrow` on `&dyn Instrument` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/song.rs:185:28
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn voice_iterators(&mut self) -> Vec<VoiceIterator> {
[INFO] [stdout]     |                            ^^^^^^^^^         ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn voice_iterators(&mut self) -> Vec<VoiceIterator<'_>> {
[INFO] [stdout]     |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/song.rs:209:20
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn samples(&mut self) -> SongIterator {
[INFO] [stdout]     |                    ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn samples(&mut self) -> SongIterator<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling asciimusic v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/song.rs:105:36
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let instrument = match Instrument::from_id(instrument_id) {
[INFO] [stdout]     |                                    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let instrument = match <dyn Instrument>::from_id(instrument_id) {
[INFO] [stdout]     |                                    ++++           +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ToBase32` is never used
[INFO] [stdout]   --> src/base32.rs:38:11
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub trait ToBase32: Sized + fmt::Debug {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/voice.rs:87:32
[INFO] [stdout]    |
[INFO] [stdout] 87 |                 self.instrument.borrow().sample(self.ramp / self.sample_rate)
[INFO] [stdout]    |                                ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `dyn Instrument` does not implement `Borrow`, so calling `borrow` on `&dyn Instrument` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/song.rs:185:28
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn voice_iterators(&mut self) -> Vec<VoiceIterator> {
[INFO] [stdout]     |                            ^^^^^^^^^         ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                            |
[INFO] [stdout]     |                            the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 185 |     pub fn voice_iterators(&mut self) -> Vec<VoiceIterator<'_>> {
[INFO] [stdout]     |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/song.rs:209:20
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn samples(&mut self) -> SongIterator {
[INFO] [stdout]     |                    ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 209 |     pub fn samples(&mut self) -> SongIterator<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "14c6413d58393354b23153e3fd6a7aa9aa7f92cf98c73657bcebb6cf711e65a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14c6413d58393354b23153e3fd6a7aa9aa7f92cf98c73657bcebb6cf711e65a8", kill_on_drop: false }`
[INFO] [stdout] 14c6413d58393354b23153e3fd6a7aa9aa7f92cf98c73657bcebb6cf711e65a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e959db28fca84e88417608e3af92c5d7cb2a3a45ab98a3c906fd6b2ca2222945
[INFO] running `Command { std: "docker" "start" "-a" "e959db28fca84e88417608e3af92c5d7cb2a3a45ab98a3c906fd6b2ca2222945", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/song.rs:105:36
[INFO] [stderr]     |
[INFO] [stderr] 105 |             let instrument = match Instrument::from_id(instrument_id) {
[INFO] [stderr]     |                                    ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 105 |             let instrument = match <dyn Instrument>::from_id(instrument_id) {
[INFO] [stderr]     |                                    ++++           +
[INFO] [stderr] 
[INFO] [stderr] warning: trait `ToBase32` is never used
[INFO] [stderr]   --> src/base32.rs:38:11
[INFO] [stderr]    |
[INFO] [stderr] 38 | pub trait ToBase32: Sized + fmt::Debug {
[INFO] [stderr]    |           ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stderr]   --> src/voice.rs:87:32
[INFO] [stderr]    |
[INFO] [stderr] 87 |                 self.instrument.borrow().sample(self.ramp / self.sample_rate)
[INFO] [stderr]    |                                ^^^^^^^^^ help: remove this redundant call
[INFO] [stderr]    |
[INFO] [stderr]    = note: the type `dyn Instrument` does not implement `Borrow`, so calling `borrow` on `&dyn Instrument` copies the reference, which does not do anything and can be removed
[INFO] [stderr]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/song.rs:185:28
[INFO] [stderr]     |
[INFO] [stderr] 185 |     pub fn voice_iterators(&mut self) -> Vec<VoiceIterator> {
[INFO] [stderr]     |                            ^^^^^^^^^         ^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                            |
[INFO] [stderr]     |                            the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 185 |     pub fn voice_iterators(&mut self) -> Vec<VoiceIterator<'_>> {
[INFO] [stderr]     |                                                           ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/song.rs:209:20
[INFO] [stderr]     |
[INFO] [stderr] 209 |     pub fn samples(&mut self) -> SongIterator {
[INFO] [stderr]     |                    ^^^^^^^^^     ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 209 |     pub fn samples(&mut self) -> SongIterator<'_> {
[INFO] [stderr]     |                                              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `asciimusic` (lib) generated 5 warnings (run `cargo fix --lib -p asciimusic` to apply 4 suggestions)
[INFO] [stderr] warning: `asciimusic` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/asciimusic-694238468021d6df)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/asciimusic.rs (/opt/rustwide/target/debug/deps/asciimusic-33cc4c1c59b685b9)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests asciimusic
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e959db28fca84e88417608e3af92c5d7cb2a3a45ab98a3c906fd6b2ca2222945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e959db28fca84e88417608e3af92c5d7cb2a3a45ab98a3c906fd6b2ca2222945", kill_on_drop: false }`
[INFO] [stdout] e959db28fca84e88417608e3af92c5d7cb2a3a45ab98a3c906fd6b2ca2222945
