[INFO] updating cached repository MOZGIII/netsound
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MOZGIII/netsound
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MOZGIII/netsound" "work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/MOZGIII/netsound"`
[INFO] [stderr] Cloning into 'work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/MOZGIII/netsound'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MOZGIII/netsound" "work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/MOZGIII/netsound"`
[INFO] [stderr] Cloning into 'work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/MOZGIII/netsound'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f3e0dfb9a34e9c9ef12498077e7ce12ac878c3f0
[INFO] sha for GitHub repo MOZGIII/netsound: f3e0dfb9a34e9c9ef12498077e7ce12ac878c3f0
[INFO] validating manifest of MOZGIII/netsound on toolchain master#7840a0b753a065a41999f1fb6028f67d33e3fdd5
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+7840a0b753a065a41999f1fb6028f67d33e3fdd5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of MOZGIII/netsound on toolchain try#6a9f0b6cc40687e25f9d772e3b10bab335c63853
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+6a9f0b6cc40687e25f9d772e3b10bab335c63853-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing MOZGIII/netsound
[INFO] finished frobbing MOZGIII/netsound
[INFO] frobbed toml for MOZGIII/netsound written to work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/MOZGIII/netsound/Cargo.toml
[INFO] started frobbing MOZGIII/netsound
[INFO] finished frobbing MOZGIII/netsound
[INFO] frobbed toml for MOZGIII/netsound written to work/ex/pr-60466/sources/try#6a9f0b6cc40687e25f9d772e3b10bab335c63853/gh/MOZGIII/netsound/Cargo.toml
[INFO] crate MOZGIII/netsound already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+7840a0b753a065a41999f1fb6028f67d33e3fdd5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+6a9f0b6cc40687e25f9d772e3b10bab335c63853-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking MOZGIII/netsound against master#7840a0b753a065a41999f1fb6028f67d33e3fdd5 for pr-60466
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60466/worker-3/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60466/sources/master#7840a0b753a065a41999f1fb6028f67d33e3fdd5/gh/MOZGIII/netsound:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7840a0b753a065a41999f1fb6028f67d33e3fdd5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 881efab7fdb1bea323a6da6111d9e3ba3aeaef9bea0d87e66ed2204c35c872d9
[INFO] running `"docker" "start" "-a" "881efab7fdb1bea323a6da6111d9e3ba3aeaef9bea0d87e66ed2204c35c872d9"`
[INFO] [stderr]    Compiling bindgen v0.48.1
[INFO] [stderr]     Checking strerr v0.1.0 (https://github.com/MOZGIII/strerr-rs.git?tag=v0.1.0#417a12ac)
[INFO] [stderr]    Compiling libloading v0.5.0
[INFO] [stderr]    Compiling alsa-sys v0.1.1 (https://github.com/MOZGIII/cpal.git?rev=3402c2fcd65a5521b671b092277a492e301c36a2#3402c2fc)
[INFO] [stderr]    Compiling which v1.0.5
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling hashbrown v0.1.8
[INFO] [stderr]    Compiling env_logger v0.6.1
[INFO] [stderr]     Checking cpal v0.8.2 (https://github.com/MOZGIII/cpal.git?rev=3402c2fcd65a5521b671b092277a492e301c36a2#3402c2fc)
[INFO] [stderr]    Compiling clang-sys v0.26.4
[INFO] [stderr]    Compiling audiopus_sys v0.1.1
[INFO] [stderr]     Checking audiopus v0.1.1
[INFO] [stderr]     Checking netsound v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/audio/cpal_backend/mod.rs:27:43
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn build(self) -> Result<Backend, Box<std::error::Error>> {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::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/audio/mod.rs:31:37
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn build(self) -> Result<T, 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/audio/mod.rs:36:40
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn build_boxed(self) -> Result<Box<Backend + 'a>, Box<Error>>;
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Backend + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/audio/mod.rs:36:59
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn build_boxed(self) -> Result<Box<Backend + 'a>, 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/audio/mod.rs:46:40
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn build_boxed(self) -> Result<Box<Backend + 'a>, Box<Error>> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Backend + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/audio/mod.rs:46:59
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn build_boxed(self) -> Result<Box<Backend + 'a>, 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/codec/error.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Other(Box<std::error::Error>),
[INFO] [stderr]   |               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/codec/error.rs:11:15
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Other(Box<std::error::Error>),
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/net/mod.rs:11:26
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub encoder: &'a mut Encoder,
[INFO] [stderr]    |                          ^^^^^^^ help: use `dyn`: `dyn Encoder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/net/mod.rs:12:26
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub decoder: &'a mut Decoder,
[INFO] [stderr]    |                          ^^^^^^^ help: use `dyn`: `dyn Decoder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/net/mod.rs:16:67
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn r#loop(&mut self, socket: UdpSocket) -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:23:21
[INFO] [stderr]    |
[INFO] [stderr] 23 | type BoxedErr = Box<std::error::Error>;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:62:42
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let (mut encoder, mut decoder): (Box<codec::Encoder>, Box<codec::Decoder>) = match codec_to_use
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn codec::Encoder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:62:63
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let (mut encoder, mut decoder): (Box<codec::Encoder>, Box<codec::Decoder>) = match codec_to_use
[INFO] [stderr]    |                                                               ^^^^^^^^^^^^^^ help: use `dyn`: `dyn codec::Decoder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:133:17
[INFO] [stderr]     |
[INFO] [stderr] 133 | ) -> Result<Box<Backend>, BoxedErr> {
[INFO] [stderr]     |                 ^^^^^^^ help: use `dyn`: `dyn Backend`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:140:69
[INFO] [stderr]     |
[INFO] [stderr] 140 | fn build_cpal_backend(builder: audio::BackendBuilder) -> Result<Box<Backend>, BoxedErr> {
[INFO] [stderr]     |                                                                     ^^^^^^^ help: use `dyn`: `dyn Backend`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:150:78
[INFO] [stderr]     |
[INFO] [stderr] 150 | fn build_pulse_simple_backend(_builder: audio::BackendBuilder) -> Result<Box<Backend>, BoxedErr> {
[INFO] [stderr]     |                                                                              ^^^^^^^ help: use `dyn`: `dyn Backend`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:154:41
[INFO] [stderr]     |
[INFO] [stderr] 154 | fn run_audio_backend(audio_backend: Box<Backend + 'static>) -> Result<(), BoxedErr> {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Backend + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/audio/cpal_backend/mod.rs:27:43
[INFO] [stderr]    |
[INFO] [stderr] 27 |     fn build(self) -> Result<Backend, Box<std::error::Error>> {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::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/audio/mod.rs:31:37
[INFO] [stderr]    |
[INFO] [stderr] 31 |     fn build(self) -> Result<T, 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/audio/mod.rs:36:40
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn build_boxed(self) -> Result<Box<Backend + 'a>, Box<Error>>;
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Backend + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/audio/mod.rs:36:59
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn build_boxed(self) -> Result<Box<Backend + 'a>, 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/audio/mod.rs:46:40
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn build_boxed(self) -> Result<Box<Backend + 'a>, Box<Error>> {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Backend + 'a`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/audio/mod.rs:46:59
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn build_boxed(self) -> Result<Box<Backend + 'a>, 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/codec/error.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Other(Box<std::error::Error>),
[INFO] [stderr]   |               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/codec/error.rs:11:15
[INFO] [stderr]    |
[INFO] [stderr] 11 |     Other(Box<std::error::Error>),
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/net/mod.rs:11:26
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub encoder: &'a mut Encoder,
[INFO] [stderr]    |                          ^^^^^^^ help: use `dyn`: `dyn Encoder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/net/mod.rs:12:26
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub decoder: &'a mut Decoder,
[INFO] [stderr]    |                          ^^^^^^^ help: use `dyn`: `dyn Decoder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/net/mod.rs:16:67
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn r#loop(&mut self, socket: UdpSocket) -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:23:21
[INFO] [stderr]    |
[INFO] [stderr] 23 | type BoxedErr = Box<std::error::Error>;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:62:42
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let (mut encoder, mut decoder): (Box<codec::Encoder>, Box<codec::Decoder>) = match codec_to_use
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^ help: use `dyn`: `dyn codec::Encoder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:62:63
[INFO] [stderr]    |
[INFO] [stderr] 62 |     let (mut encoder, mut decoder): (Box<codec::Encoder>, Box<codec::Decoder>) = match codec_to_use
[INFO] [stderr]    |                                                               ^^^^^^^^^^^^^^ help: use `dyn`: `dyn codec::Decoder`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:133:17
[INFO] [stderr]     |
[INFO] [stderr] 133 | ) -> Result<Box<Backend>, BoxedErr> {
[INFO] [stderr]     |                 ^^^^^^^ help: use `dyn`: `dyn Backend`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:140:69
[INFO] [stderr]     |
[INFO] [stderr] 140 | fn build_cpal_backend(builder: audio::BackendBuilder) -> Result<Box<Backend>, BoxedErr> {
[INFO] [stderr]     |                                                                     ^^^^^^^ help: use `dyn`: `dyn Backend`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:150:78
[INFO] [stderr]     |
[INFO] [stderr] 150 | fn build_pulse_simple_backend(_builder: audio::BackendBuilder) -> Result<Box<Backend>, BoxedErr> {
[INFO] [stderr]     |                                                                              ^^^^^^^ help: use `dyn`: `dyn Backend`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:154:41
[INFO] [stderr]     |
[INFO] [stderr] 154 | fn run_audio_backend(audio_backend: Box<Backend + 'static>) -> Result<(), BoxedErr> {
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Backend + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |             let mut encoder = codec::opus::make_encoder(&capture_format, encoder_buf.as_mut())?;
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |             let mut decoder =
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:65:17
[INFO] [stderr]    |
[INFO] [stderr] 65 |             let mut encoder = codec::opus::make_encoder(&capture_format, encoder_buf.as_mut())?;
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:66:17
[INFO] [stderr]    |
[INFO] [stderr] 66 |             let mut decoder =
[INFO] [stderr]    |                 ----^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/samples.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         for mut chunk in buf.iter_mut() {
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/samples.rs:28:13
[INFO] [stderr]    |
[INFO] [stderr] 28 |         for mut chunk in buf.iter_mut() {
[INFO] [stderr]    |             ----^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.58s
[INFO] running `"docker" "inspect" "881efab7fdb1bea323a6da6111d9e3ba3aeaef9bea0d87e66ed2204c35c872d9"`
[INFO] running `"docker" "rm" "-f" "881efab7fdb1bea323a6da6111d9e3ba3aeaef9bea0d87e66ed2204c35c872d9"`
[INFO] [stdout] 881efab7fdb1bea323a6da6111d9e3ba3aeaef9bea0d87e66ed2204c35c872d9