[INFO] fetching crate emailmessage 0.2.2...
[INFO] checking emailmessage-0.2.2 against master#9610dfe5a9a731ced1ea4923ecbd0c57fe367898 for beta-170-4
[INFO] extracting crate emailmessage 0.2.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate emailmessage 0.2.2 on toolchain 9610dfe5a9a731ced1ea4923ecbd0c57fe367898
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate emailmessage 0.2.2
[INFO] finished tweaking crates.io crate emailmessage 0.2.2
[INFO] tweaked toml for crates.io crate emailmessage 0.2.2 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] [stderr]   Downloaded quoted_printable v0.4.8
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[INFO] [stdout] 014e5e0630b5d618a70566a953d13947a5ee8ead2d1b130d2883cbe5c5643d8b
[INFO] running `Command { std: "docker" "start" "-a" "014e5e0630b5d618a70566a953d13947a5ee8ead2d1b130d2883cbe5c5643d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "014e5e0630b5d618a70566a953d13947a5ee8ead2d1b130d2883cbe5c5643d8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "014e5e0630b5d618a70566a953d13947a5ee8ead2d1b130d2883cbe5c5643d8b", kill_on_drop: false }`
[INFO] [stdout] 014e5e0630b5d618a70566a953d13947a5ee8ead2d1b130d2883cbe5c5643d8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4382cb8d9cee64a000ef53bdbcf0d16f100cce2d5313709156ad96c499c7c73
[INFO] running `Command { std: "docker" "start" "-a" "c4382cb8d9cee64a000ef53bdbcf0d16f100cce2d5313709156ad96c499c7c73", kill_on_drop: false }`
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[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:253:18
[INFO] [stdout]     |
[INFO] [stdout] 253 |     encoder: Box<EncoderCodec>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 253 |     encoder: Box<dyn EncoderCodec>,
[INFO] [stdout]     |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encoder.rs:35:40
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn encode_chunk(&mut self, input: &Buf) -> Result<Bytes, ()>;
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn encode_chunk(&mut self, input: &dyn Buf) -> Result<Bytes, ()>;
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encoder.rs:45:39
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn encode_all(&mut self, source: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn encode_all(&mut self, source: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encoder.rs:74:40
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn encode_chunk(&mut self, chunk: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn encode_chunk(&mut self, chunk: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encoder.rs:94:40
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn encode_chunk(&mut self, chunk: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn encode_chunk(&mut self, chunk: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:116:40
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn encode_chunk(&mut self, chunk: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn encode_chunk(&mut self, chunk: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:199:40
[INFO] [stdout]     |
[INFO] [stdout] 199 |     fn encode_chunk(&mut self, chunk: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 199 |     fn encode_chunk(&mut self, chunk: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:244:40
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn encode_chunk(&mut self, chunk: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn encode_chunk(&mut self, chunk: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:257:69
[INFO] [stdout]     |
[INFO] [stdout] 257 |     pub fn codec(encoding: Option<&ContentTransferEncoding>) -> Box<EncoderCodec> {
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 257 |     pub fn codec(encoding: Option<&ContentTransferEncoding>) -> Box<dyn EncoderCodec> {
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:274:40
[INFO] [stdout]     |
[INFO] [stdout] 274 |     pub fn new(source: S, encoder: Box<EncoderCodec>) -> Self {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 274 |     pub fn new(source: S, encoder: Box<dyn EncoderCodec>) -> Self {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:253:18
[INFO] [stdout]     |
[INFO] [stdout] 253 |     encoder: Box<EncoderCodec>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 253 |     encoder: Box<dyn EncoderCodec>,
[INFO] [stdout]     |                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encoder.rs:35:40
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn encode_chunk(&mut self, input: &Buf) -> Result<Bytes, ()>;
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn encode_chunk(&mut self, input: &dyn Buf) -> Result<Bytes, ()>;
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encoder.rs:45:39
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn encode_all(&mut self, source: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn encode_all(&mut self, source: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encoder.rs:74:40
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn encode_chunk(&mut self, chunk: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 74 |     fn encode_chunk(&mut self, chunk: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/encoder.rs:94:40
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn encode_chunk(&mut self, chunk: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn encode_chunk(&mut self, chunk: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:116:40
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn encode_chunk(&mut self, chunk: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn encode_chunk(&mut self, chunk: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:199:40
[INFO] [stdout]     |
[INFO] [stdout] 199 |     fn encode_chunk(&mut self, chunk: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 199 |     fn encode_chunk(&mut self, chunk: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:244:40
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn encode_chunk(&mut self, chunk: &Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn encode_chunk(&mut self, chunk: &dyn Buf) -> Result<Bytes, ()> {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:257:69
[INFO] [stdout]     |
[INFO] [stdout] 257 |     pub fn codec(encoding: Option<&ContentTransferEncoding>) -> Box<EncoderCodec> {
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 257 |     pub fn codec(encoding: Option<&ContentTransferEncoding>) -> Box<dyn EncoderCodec> {
[INFO] [stdout]     |                                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/encoder.rs:274:40
[INFO] [stdout]     |
[INFO] [stdout] 274 |     pub fn new(source: S, encoder: Box<EncoderCodec>) -> Self {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 274 |     pub fn new(source: S, encoder: Box<dyn EncoderCodec>) -> Self {
[INFO] [stdout]     |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mimebody.rs:648:21
[INFO] [stdout]     |
[INFO] [stdout] 648 |                 let mut chunk = BytesMut::with_capacity(
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/mimebody.rs:648:21
[INFO] [stdout]     |
[INFO] [stdout] 648 |                 let mut chunk = BytesMut::with_capacity(
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.99s
[INFO] running `Command { std: "docker" "inspect" "c4382cb8d9cee64a000ef53bdbcf0d16f100cce2d5313709156ad96c499c7c73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4382cb8d9cee64a000ef53bdbcf0d16f100cce2d5313709156ad96c499c7c73", kill_on_drop: false }`
[INFO] [stdout] c4382cb8d9cee64a000ef53bdbcf0d16f100cce2d5313709156ad96c499c7c73
