[INFO] fetching crate spaniel 0.1.0...
[INFO] checking spaniel-0.1.0 against master#0d56e340472882fa673d4b98d0802b9a799879d0 for pr-101692
[INFO] extracting crate spaniel 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate spaniel 0.1.0 on toolchain 0d56e340472882fa673d4b98d0802b9a799879d0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate spaniel 0.1.0
[INFO] finished tweaking crates.io crate spaniel 0.1.0
[INFO] tweaked toml for crates.io crate spaniel 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f557e298551d664e8a86e8eb7805789279bbbdf56a9b9e7d1ca8781c1170114b
[INFO] running `Command { std: "docker" "start" "-a" "f557e298551d664e8a86e8eb7805789279bbbdf56a9b9e7d1ca8781c1170114b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f557e298551d664e8a86e8eb7805789279bbbdf56a9b9e7d1ca8781c1170114b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f557e298551d664e8a86e8eb7805789279bbbdf56a9b9e7d1ca8781c1170114b", kill_on_drop: false }`
[INFO] [stdout] f557e298551d664e8a86e8eb7805789279bbbdf56a9b9e7d1ca8781c1170114b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+0d56e340472882fa673d4b98d0802b9a799879d0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08fec8b17169f2be8c249fd858302d197cc94b02c0ef6f1eff6e4b9ade996830
[INFO] running `Command { std: "docker" "start" "-a" "08fec8b17169f2be8c249fd858302d197cc94b02c0ef6f1eff6e4b9ade996830", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking spaniel v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/protocol/codec/writer.rs:127:58
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn buffer_data(&mut self, data: Bytes) -> Result<(usize), WriteError> {
[INFO] [stdout]     |                                                          ^     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 127 -     pub fn buffer_data(&mut self, data: Bytes) -> Result<(usize), WriteError> {
[INFO] [stdout] 127 +     pub fn buffer_data(&mut self, data: Bytes) -> Result<usize, WriteError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/protocol/codec/writer.rs:251:60
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn buffer_frame(&mut self, frame: Frame) -> Result<(usize), WriteError> {
[INFO] [stdout]     |                                                            ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 251 -     pub fn buffer_frame(&mut self, frame: Frame) -> Result<(usize), WriteError> {
[INFO] [stdout] 251 +     pub fn buffer_frame(&mut self, frame: Frame) -> Result<usize, WriteError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/protocol/codec/writer.rs:260:62
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn buffer_and_flush(&mut self, frame: Frame) -> Poll<(usize), WriteError> {
[INFO] [stdout]     |                                                              ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 260 -     pub fn buffer_and_flush(&mut self, frame: Frame) -> Poll<(usize), WriteError> {
[INFO] [stdout] 260 +     pub fn buffer_and_flush(&mut self, frame: Frame) -> Poll<usize, WriteError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/protocol/codec/writer.rs:127:58
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn buffer_data(&mut self, data: Bytes) -> Result<(usize), WriteError> {
[INFO] [stdout]     |                                                          ^     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 127 -     pub fn buffer_data(&mut self, data: Bytes) -> Result<(usize), WriteError> {
[INFO] [stdout] 127 +     pub fn buffer_data(&mut self, data: Bytes) -> Result<usize, WriteError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/protocol/codec/writer.rs:251:60
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn buffer_frame(&mut self, frame: Frame) -> Result<(usize), WriteError> {
[INFO] [stdout]     |                                                            ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 251 -     pub fn buffer_frame(&mut self, frame: Frame) -> Result<(usize), WriteError> {
[INFO] [stdout] 251 +     pub fn buffer_frame(&mut self, frame: Frame) -> Result<usize, WriteError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/protocol/codec/writer.rs:260:62
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn buffer_and_flush(&mut self, frame: Frame) -> Poll<(usize), WriteError> {
[INFO] [stdout]     |                                                              ^     ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 260 -     pub fn buffer_and_flush(&mut self, frame: Frame) -> Poll<(usize), WriteError> {
[INFO] [stdout] 260 +     pub fn buffer_and_flush(&mut self, frame: Frame) -> Poll<usize, WriteError> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated module `tokio_io::codec::length_delimited`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/mod.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tokio_io::codec::length_delimited::{self, Framed};
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `tokio_io::length_delimited::Framed`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/mod.rs:11:47
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tokio_io::codec::length_delimited::{self, Framed};
[INFO] [stdout]    |                                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `tokio_io::length_delimited::Framed`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/mod.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     inner: Framed<T, Bytes>,
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `tokio_io::length_delimited::Builder`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/mod.rs:32:38
[INFO] [stdout]    |
[INFO] [stdout] 32 |             inner: length_delimited::Builder::new()
[INFO] [stdout]    |                                      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated module `tokio_io::codec::length_delimited`: Moved to tokio-codec
[INFO] [stdout]  --> src/protocol/codec/reader.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio_io::codec::length_delimited;
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `tokio_io::length_delimited::FramedRead`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/reader.rs:12:28
[INFO] [stdout]    |
[INFO] [stdout] 12 |     src: length_delimited::FramedRead<T>,
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `tokio_io::length_delimited::Builder`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/reader.rs:19:37
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let src = length_delimited::Builder::new()
[INFO] [stdout]    |                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated module `tokio_io::codec::length_delimited`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/mod.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tokio_io::codec::length_delimited::{self, Framed};
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `tokio_io::length_delimited::Framed`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/mod.rs:11:47
[INFO] [stdout]    |
[INFO] [stdout] 11 | use tokio_io::codec::length_delimited::{self, Framed};
[INFO] [stdout]    |                                               ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `tokio_io::length_delimited::Framed`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/mod.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     inner: Framed<T, Bytes>,
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `tokio_io::length_delimited::Builder`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/mod.rs:32:38
[INFO] [stdout]    |
[INFO] [stdout] 32 |             inner: length_delimited::Builder::new()
[INFO] [stdout]    |                                      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated module `tokio_io::codec::length_delimited`: Moved to tokio-codec
[INFO] [stdout]  --> src/protocol/codec/reader.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio_io::codec::length_delimited;
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `tokio_io::length_delimited::FramedRead`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/reader.rs:12:28
[INFO] [stdout]    |
[INFO] [stdout] 12 |     src: length_delimited::FramedRead<T>,
[INFO] [stdout]    |                            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `tokio_io::length_delimited::Builder`: Moved to tokio-codec
[INFO] [stdout]   --> src/protocol/codec/reader.rs:19:37
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let src = length_delimited::Builder::new()
[INFO] [stdout]    |                                     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/protocol/codec/writer.rs:60:44
[INFO] [stdout]    |
[INFO] [stdout] 60 |         write!(f, "writer error: {}", self.description())
[INFO] [stdout]    |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/protocol/codec/writer.rs:60:44
[INFO] [stdout]    |
[INFO] [stdout] 60 |         write!(f, "writer error: {}", self.description())
[INFO] [stdout]    |                                            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/protocol/frames.rs:305:28
[INFO] [stdout]     |
[INFO] [stdout] 305 |     fn decode_from<B: Buf>(src: &mut B) -> Result<Frame, FramingError> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/protocol/frames.rs:309:38
[INFO] [stdout]     |
[INFO] [stdout] 309 |     fn encode_into<B: BufMut>(&self, dst: &mut B) -> Result<(), ()> {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src`
[INFO] [stdout]    --> src/protocol/frames.rs:305:28
[INFO] [stdout]     |
[INFO] [stdout] 305 |     fn decode_from<B: Buf>(src: &mut B) -> Result<Frame, FramingError> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_src`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dst`
[INFO] [stdout]    --> src/protocol/frames.rs:309:38
[INFO] [stdout]     |
[INFO] [stdout] 309 |     fn encode_into<B: BufMut>(&self, dst: &mut B) -> Result<(), ()> {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_dst`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/protocol/codec/writer.rs:196:21
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 let mut buf = self.current.as_mut().unwrap();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/protocol/codec/writer.rs:196:21
[INFO] [stdout]     |
[INFO] [stdout] 196 |                 let mut buf = self.current.as_mut().unwrap();
[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: field `id` is never read
[INFO] [stdout]   --> src/connection.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub struct ConnectionContext {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 64 |     id: ConnectionId,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: `ConnectionContext` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `notify_all` is never used
[INFO] [stdout]    --> src/connection.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 |     fn notify_all(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `CreditBased` is never constructed
[INFO] [stdout]  --> src/flow_control.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum FlowControlStrategy {
[INFO] [stdout]   |          ------------------- variant in this enum
[INFO] [stdout] 7 |     Disabled,
[INFO] [stdout] 8 |     CreditBased(FlowControlRatio),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `FlowControlStrategy` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `push_front` is never used
[INFO] [stdout]   --> src/protocol/codec/buffer.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn push_front(&mut self, value: B) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Error` is never constructed
[INFO] [stdout]   --> src/protocol/codec/writer.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub enum WriteState {
[INFO] [stdout]    |          ---------- variant in this enum
[INFO] [stdout] 72 |     Error,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `set_watermarks` is never used
[INFO] [stdout]    --> src/protocol/codec/writer.rs:119:12
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn set_watermarks(&mut self, high: usize, low: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `write_and_flush` is never used
[INFO] [stdout]    --> src/protocol/codec/writer.rs:220:12
[INFO] [stdout]     |
[INFO] [stdout] 220 |     pub fn write_and_flush(&mut self, data: Bytes) -> Poll<(), std::io::Error> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/connection.rs:64:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub struct ConnectionContext {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 64 |     id: ConnectionId,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: `ConnectionContext` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `notify_all` is never used
[INFO] [stdout]    --> src/connection.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 |     fn notify_all(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `CreditBased` is never constructed
[INFO] [stdout]  --> src/flow_control.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum FlowControlStrategy {
[INFO] [stdout]   |          ------------------- variant in this enum
[INFO] [stdout] 7 |     Disabled,
[INFO] [stdout] 8 |     CreditBased(FlowControlRatio),
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `FlowControlStrategy` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `push_front` is never used
[INFO] [stdout]   --> src/protocol/codec/buffer.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn push_front(&mut self, value: B) {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Error` is never constructed
[INFO] [stdout]   --> src/protocol/codec/writer.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub enum WriteState {
[INFO] [stdout]    |          ---------- variant in this enum
[INFO] [stdout] 72 |     Error,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `set_watermarks` is never used
[INFO] [stdout]    --> src/protocol/codec/writer.rs:119:12
[INFO] [stdout]     |
[INFO] [stdout] 119 |     pub fn set_watermarks(&mut self, high: usize, low: usize) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `write_and_flush` is never used
[INFO] [stdout]    --> src/protocol/codec/writer.rs:220:12
[INFO] [stdout]     |
[INFO] [stdout] 220 |     pub fn write_and_flush(&mut self, data: Bytes) -> Poll<(), std::io::Error> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 21 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.00s
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "08fec8b17169f2be8c249fd858302d197cc94b02c0ef6f1eff6e4b9ade996830", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08fec8b17169f2be8c249fd858302d197cc94b02c0ef6f1eff6e4b9ade996830", kill_on_drop: false }`
[INFO] [stdout] 08fec8b17169f2be8c249fd858302d197cc94b02c0ef6f1eff6e4b9ade996830