[INFO] fetching crate wcomm 0.1.3...
[INFO] testing wcomm-0.1.3 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate wcomm 0.1.3 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate wcomm 0.1.3
[INFO] finished tweaking crates.io crate wcomm 0.1.3
[INFO] tweaked toml for crates.io crate wcomm 0.1.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wcomm 0.1.3 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wcomm 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed
[INFO] running `Command { std: "docker" "start" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
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[INFO] [stderr]    Compiling typenum v1.15.0
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[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
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[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling alsa-sys v0.3.1
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[INFO] [stderr]    Compiling rsor v0.1.3
[INFO] [stderr]    Compiling wav v1.0.0
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[INFO] [stderr]    Compiling parking_lot v0.11.2
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[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling duplicate v0.4.1
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[INFO] [stderr]    Compiling alsa v0.6.0
[INFO] [stderr]    Compiling fundsp v0.6.4
[INFO] [stderr]    Compiling wcomm v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `channel::*`
[INFO] [stdout]  --> src/encoding/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use channel::*;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frequency`
[INFO] [stdout]   --> src/channels/sound.rs:93:22
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn listen(&self, frequency: u32) {
[INFO] [stdout]    |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_frequency`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel`
[INFO] [stdout]   --> src/modulation/qam.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stdout]    |                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/modulation/qam.rs:28:47
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stdout]    |                                               ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `time`
[INFO] [stdout]   --> src/modulation/qam.rs:28:62
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stdout]    |                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/channels/sound.rs:102:27
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn new(modulator: &dyn DigitalModulator) -> Sound {
[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] 102 |     pub fn new(modulator: &dyn DigitalModulator) -> Sound<'_> {
[INFO] [stdout]     |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/channels/sound.rs:120:70
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn modulator(mut self, new_mod: &'a dyn DigitalModulator) -> Sound {
[INFO] [stdout]     |                                          --                          ^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn modulator(mut self, new_mod: &'a dyn DigitalModulator) -> Sound<'a> {
[INFO] [stdout]     |                                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 29.52s
[INFO] running `Command { std: "docker" "inspect" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `channel::*`
[INFO] [stdout]  --> src/encoding/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use channel::*;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frequency`
[INFO] [stdout]   --> src/channels/sound.rs:93:22
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn listen(&self, frequency: u32) {
[INFO] [stdout]    |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_frequency`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel`
[INFO] [stdout]   --> src/modulation/qam.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stdout]    |                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/modulation/qam.rs:28:47
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stdout]    |                                               ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `time`
[INFO] [stdout]   --> src/modulation/qam.rs:28:62
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stdout]    |                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/channels/sound.rs:102:27
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn new(modulator: &dyn DigitalModulator) -> Sound {
[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] 102 |     pub fn new(modulator: &dyn DigitalModulator) -> Sound<'_> {
[INFO] [stdout]     |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/channels/sound.rs:120:70
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn modulator(mut self, new_mod: &'a dyn DigitalModulator) -> Sound {
[INFO] [stdout]     |                                          --                          ^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn modulator(mut self, new_mod: &'a dyn DigitalModulator) -> Sound<'a> {
[INFO] [stdout]     |                                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wcomm v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `channel::*`
[INFO] [stdout]  --> src/encoding/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub use channel::*;
[INFO] [stdout]   |         ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `frequency`
[INFO] [stdout]   --> src/channels/sound.rs:93:22
[INFO] [stdout]    |
[INFO] [stdout] 93 |     fn listen(&self, frequency: u32) {
[INFO] [stdout]    |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_frequency`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `channel`
[INFO] [stdout]   --> src/modulation/qam.rs:28:24
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stdout]    |                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/modulation/qam.rs:28:47
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stdout]    |                                               ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `time`
[INFO] [stdout]   --> src/modulation/qam.rs:28:62
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stdout]    |                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_time`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/channels/sound.rs:102:27
[INFO] [stdout]     |
[INFO] [stdout] 102 |     pub fn new(modulator: &dyn DigitalModulator) -> Sound {
[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] 102 |     pub fn new(modulator: &dyn DigitalModulator) -> Sound<'_> {
[INFO] [stdout]     |                                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/channels/sound.rs:120:70
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn modulator(mut self, new_mod: &'a dyn DigitalModulator) -> Sound {
[INFO] [stdout]     |                                          --                          ^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 120 |     pub fn modulator(mut self, new_mod: &'a dyn DigitalModulator) -> Sound<'a> {
[INFO] [stdout]     |                                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `Command { std: "docker" "inspect" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `channel::*`
[INFO] [stderr]  --> src/encoding/mod.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub use channel::*;
[INFO] [stderr]   |         ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `frequency`
[INFO] [stderr]   --> src/channels/sound.rs:93:22
[INFO] [stderr]    |
[INFO] [stderr] 93 |     fn listen(&self, frequency: u32) {
[INFO] [stderr]    |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_frequency`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `channel`
[INFO] [stderr]   --> src/modulation/qam.rs:28:24
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stderr]    |                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_channel`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]   --> src/modulation/qam.rs:28:47
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stderr]    |                                               ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `time`
[INFO] [stderr]   --> src/modulation/qam.rs:28:62
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn send_msg(&self, channel: &dyn Channel, msg: &Message, time: u32) {
[INFO] [stderr]    |                                                              ^^^^ help: if this is intentional, prefix it with an underscore: `_time`
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/channels/sound.rs:102:27
[INFO] [stderr]     |
[INFO] [stderr] 102 |     pub fn new(modulator: &dyn DigitalModulator) -> Sound {
[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] 102 |     pub fn new(modulator: &dyn DigitalModulator) -> Sound<'_> {
[INFO] [stderr]     |                                                          ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stderr]    --> src/channels/sound.rs:120:70
[INFO] [stderr]     |
[INFO] [stderr] 120 |     pub fn modulator(mut self, new_mod: &'a dyn DigitalModulator) -> Sound {
[INFO] [stderr]     |                                          --                          ^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                                          |
[INFO] [stderr]     |                                          the lifetime is named here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: consistently use `'a`
[INFO] [stderr]     |
[INFO] [stderr] 120 |     pub fn modulator(mut self, new_mod: &'a dyn DigitalModulator) -> Sound<'a> {
[INFO] [stderr]     |                                                                           ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `wcomm` (lib) generated 7 warnings (run `cargo fix --lib -p wcomm` to apply 7 suggestions)
[INFO] [stderr] warning: `wcomm` (lib test) generated 7 warnings (7 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wcomm-bbe58714e6a561cb)
[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 wcomm
[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" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed", kill_on_drop: false }`
[INFO] [stdout] 7a4d8891232390b501738faabf4144026275e9a1f12b88001a0dca8076606fed
