[INFO] fetching crate emailmessage 0.2.2...
[INFO] checking emailmessage-0.2.2 against 1.55.0 for beta-1.56-3
[INFO] extracting crate emailmessage 0.2.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate emailmessage 0.2.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 22313b2cb3cbc7bab5e44b0349de6b52f7b8f17ea5f89294dc38d95f8f92ab67
[INFO] running `Command { std: "docker" "start" "-a" "22313b2cb3cbc7bab5e44b0349de6b52f7b8f17ea5f89294dc38d95f8f92ab67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22313b2cb3cbc7bab5e44b0349de6b52f7b8f17ea5f89294dc38d95f8f92ab67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22313b2cb3cbc7bab5e44b0349de6b52f7b8f17ea5f89294dc38d95f8f92ab67", kill_on_drop: false }`
[INFO] [stdout] 22313b2cb3cbc7bab5e44b0349de6b52f7b8f17ea5f89294dc38d95f8f92ab67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18862258beb9e7f4e9d6d822369bb252d25998871be758988cd4e4a84f33790d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "18862258beb9e7f4e9d6d822369bb252d25998871be758988cd4e4a84f33790d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking quoted_printable v0.4.3
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking hyperx v0.13.2
[INFO] [stderr]     Checking textnonce v0.6.5
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking hyper v0.12.36
[INFO] [stderr]     Checking emailmessage v0.2.2 (/opt/rustwide/workdir)
[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]    |                                        ^^^ help: use `dyn`: `dyn Buf`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                                       ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                                        ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                                        ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                                        ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                                        ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                                        ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn EncoderCodec`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn EncoderCodec`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn EncoderCodec`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                                        ^^^ help: use `dyn`: `dyn Buf`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                                       ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                                        ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    |                                        ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                                        ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                                        ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                                        ^^^ help: use `dyn`: `dyn Buf`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                  ^^^^^^^^^^^^ help: use `dyn`: `dyn EncoderCodec`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn EncoderCodec`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     |                                        ^^^^^^^^^^^^ help: use `dyn`: `dyn EncoderCodec`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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 7.10s
[INFO] running `Command { std: "docker" "inspect" "18862258beb9e7f4e9d6d822369bb252d25998871be758988cd4e4a84f33790d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18862258beb9e7f4e9d6d822369bb252d25998871be758988cd4e4a84f33790d", kill_on_drop: false }`
[INFO] [stdout] 18862258beb9e7f4e9d6d822369bb252d25998871be758988cd4e4a84f33790d
