[INFO] updating cached repository https://github.com/jcc333/blood-sucker
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c107a0771f711193919c54fe1d1330c8e39ac4b
[INFO] checking jcc333/blood-sucker against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcc333%2Fblood-sucker" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jcc333/blood-sucker on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jcc333/blood-sucker
[INFO] finished tweaking git repo https://github.com/jcc333/blood-sucker
[INFO] tweaked toml for git repo https://github.com/jcc333/blood-sucker written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/jcc333/blood-sucker already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: unused manifest key: package.repo
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9a79ca7ea5e68bb42d27958a67f37bb37084c382d1c1188615e5e044357b07e6
[INFO] running `"docker" "start" "-a" "9a79ca7ea5e68bb42d27958a67f37bb37084c382d1c1188615e5e044357b07e6"`
[INFO] [stderr] warning: unused manifest key: package.repo
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking tokio-sync v0.1.1
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-reactor v0.1.8
[INFO] [stderr]     Checking crossbeam v0.6.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.11
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-fs v0.1.5
[INFO] [stderr]     Checking tokio v0.1.15
[INFO] [stderr]     Checking mqtt v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/mqtt/serde.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn ser(&self, sink: &mut Write) -> Result<usize>;
[INFO] [stderr]   |                              ^^^^^ help: use `dyn`: `dyn Write`
[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/mqtt/serde.rs:10:24
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn de(source: &mut Read) -> Result<(Self, usize)>;
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/qos.rs:45:30
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/qos.rs:54:24
[INFO] [stderr]    |
[INFO] [stderr] 54 |     fn de(source: &mut Read) -> Result<(QualityOfService, usize)> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/remaining_length.rs:35:30
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/remaining_length.rs:55:24
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/variable_header.rs:57:30
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/variable_header.rs:61:24
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/fixed_header.rs:39:30
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/fixed_header.rs:45:24
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/payload.rs:87:30
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/payload.rs:91:24
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mqtt/message.rs:198:30
[INFO] [stderr]     |
[INFO] [stderr] 198 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]     |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mqtt/message.rs:214:24
[INFO] [stderr]     |
[INFO] [stderr] 214 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]     |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/mqtt/serde.rs:7:30
[INFO] [stderr]   |
[INFO] [stderr] 7 |     fn ser(&self, sink: &mut Write) -> Result<usize>;
[INFO] [stderr]   |                              ^^^^^ help: use `dyn`: `dyn Write`
[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/mqtt/serde.rs:10:24
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn de(source: &mut Read) -> Result<(Self, usize)>;
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/qos.rs:45:30
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/qos.rs:54:24
[INFO] [stderr]    |
[INFO] [stderr] 54 |     fn de(source: &mut Read) -> Result<(QualityOfService, usize)> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/remaining_length.rs:35:30
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/remaining_length.rs:55:24
[INFO] [stderr]    |
[INFO] [stderr] 55 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/variable_header.rs:57:30
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/variable_header.rs:61:24
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/fixed_header.rs:39:30
[INFO] [stderr]    |
[INFO] [stderr] 39 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/fixed_header.rs:45:24
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/payload.rs:87:30
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/mqtt/payload.rs:91:24
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mqtt/message.rs:198:30
[INFO] [stderr]     |
[INFO] [stderr] 198 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]     |                              ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/mqtt/message.rs:214:24
[INFO] [stderr]     |
[INFO] [stderr] 214 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]     |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]   --> src/mqtt/remaining_length.rs:83:23
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn from_bytes(bytes: &[u8]) -> Result<Self> {
[INFO] [stderr]    |                       ^^^^^ help: consider prefixing with an underscore: `_bytes`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sink`
[INFO] [stderr]   --> src/mqtt/variable_header.rs:57:19
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                   ^^^^ help: consider prefixing with an underscore: `_sink`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]   --> src/mqtt/variable_header.rs:61:11
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |           ^^^^^^ help: consider prefixing with an underscore: `_source`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sink`
[INFO] [stderr]   --> src/mqtt/payload.rs:87:19
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                   ^^^^ help: consider prefixing with an underscore: `_sink`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]   --> src/mqtt/payload.rs:91:11
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |           ^^^^^^ help: consider prefixing with an underscore: `_source`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic`
[INFO] [stderr]   --> src/mqtt/message.rs:90:50
[INFO] [stderr]    |
[INFO] [stderr] 90 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } => {
[INFO] [stderr]    |                                                  ^^^^^ help: try ignoring the field: `topic: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]   --> src/mqtt/message.rs:90:57
[INFO] [stderr]    |
[INFO] [stderr] 90 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } => {
[INFO] [stderr]    |                                                         ^^^^^^^^^ help: try ignoring the field: `packet_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `payload`
[INFO] [stderr]   --> src/mqtt/message.rs:90:68
[INFO] [stderr]    |
[INFO] [stderr] 90 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } => {
[INFO] [stderr]    |                                                                    ^^^^^^^ help: try ignoring the field: `payload: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]   --> src/mqtt/message.rs:95:34
[INFO] [stderr]    |
[INFO] [stderr] 95 |             Message::Subscribe { packet_id, topic_filters } => [false, false, true, false],
[INFO] [stderr]    |                                  ^^^^^^^^^ help: try ignoring the field: `packet_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]   --> src/mqtt/message.rs:95:45
[INFO] [stderr]    |
[INFO] [stderr] 95 |             Message::Subscribe { packet_id, topic_filters } => [false, false, true, false],
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^ help: try ignoring the field: `topic_filters: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]   --> src/mqtt/message.rs:96:36
[INFO] [stderr]    |
[INFO] [stderr] 96 |             Message::Unsubscribe { packet_id, topic_filters } => [false, false, true, false],
[INFO] [stderr]    |                                    ^^^^^^^^^ help: try ignoring the field: `packet_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]   --> src/mqtt/message.rs:96:47
[INFO] [stderr]    |
[INFO] [stderr] 96 |             Message::Unsubscribe { packet_id, topic_filters } => [false, false, true, false],
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^ help: try ignoring the field: `topic_filters: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `client_id`
[INFO] [stderr]    --> src/mqtt/message.rs:117:17
[INFO] [stderr]     |
[INFO] [stderr] 117 |                 client_id,
[INFO] [stderr]     |                 ^^^^^^^^^ help: try ignoring the field: `client_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dup`
[INFO] [stderr]    --> src/mqtt/message.rs:145:32
[INFO] [stderr]     |
[INFO] [stderr] 145 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } =>
[INFO] [stderr]     |                                ^^^ help: try ignoring the field: `dup: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `qos`
[INFO] [stderr]    --> src/mqtt/message.rs:145:37
[INFO] [stderr]     |
[INFO] [stderr] 145 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } =>
[INFO] [stderr]     |                                     ^^^ help: try ignoring the field: `qos: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `retain`
[INFO] [stderr]    --> src/mqtt/message.rs:145:42
[INFO] [stderr]     |
[INFO] [stderr] 145 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } =>
[INFO] [stderr]     |                                          ^^^^^^ help: try ignoring the field: `retain: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `payload`
[INFO] [stderr]    --> src/mqtt/message.rs:145:68
[INFO] [stderr]     |
[INFO] [stderr] 145 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } =>
[INFO] [stderr]     |                                                                    ^^^^^^^ help: try ignoring the field: `payload: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]    --> src/mqtt/message.rs:147:44
[INFO] [stderr]     |
[INFO] [stderr] 147 |             Message::Subscribe{ packet_id, topic_filters } =>
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^ help: try ignoring the field: `topic_filters: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `return_codes`
[INFO] [stderr]    --> src/mqtt/message.rs:149:41
[INFO] [stderr]     |
[INFO] [stderr] 149 |             Message::Suback{ packet_id, return_codes } =>
[INFO] [stderr]     |                                         ^^^^^^^^^^^^ help: try ignoring the field: `return_codes: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]    --> src/mqtt/message.rs:151:47
[INFO] [stderr]     |
[INFO] [stderr] 151 |             Message::Unsubscribe { packet_id, topic_filters } =>
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^ help: try ignoring the field: `topic_filters: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `client_id`
[INFO] [stderr]   --> src/mqtt/session.rs:76:20
[INFO] [stderr]    |
[INFO] [stderr] 76 |                    client_id: &'a str,
[INFO] [stderr]    |                    ^^^^^^^^^ help: consider prefixing with an underscore: `_client_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `username`
[INFO] [stderr]   --> src/mqtt/session.rs:77:20
[INFO] [stderr]    |
[INFO] [stderr] 77 |                    username: &'a str,
[INFO] [stderr]    |                    ^^^^^^^^ help: consider prefixing with an underscore: `_username`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `password`
[INFO] [stderr]   --> src/mqtt/session.rs:78:20
[INFO] [stderr]    |
[INFO] [stderr] 78 |                    password: &'a str,
[INFO] [stderr]    |                    ^^^^^^^^ help: consider prefixing with an underscore: `_password`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clean_session`
[INFO] [stderr]   --> src/mqtt/session.rs:80:20
[INFO] [stderr]    |
[INFO] [stderr] 80 |                    clean_session: bool,
[INFO] [stderr]    |                    ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_clean_session`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keep_alive`
[INFO] [stderr]   --> src/mqtt/session.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |                    keep_alive: u16
[INFO] [stderr]    |                    ^^^^^^^^^^ help: consider prefixing with an underscore: `_keep_alive`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dup`
[INFO] [stderr]   --> src/mqtt/session.rs:95:16
[INFO] [stderr]    |
[INFO] [stderr] 95 |                dup: bool,
[INFO] [stderr]    |                ^^^ help: consider prefixing with an underscore: `_dup`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `qos`
[INFO] [stderr]   --> src/mqtt/session.rs:96:16
[INFO] [stderr]    |
[INFO] [stderr] 96 |                qos: QualityOfService,
[INFO] [stderr]    |                ^^^ help: consider prefixing with an underscore: `_qos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `retain`
[INFO] [stderr]   --> src/mqtt/session.rs:97:16
[INFO] [stderr]    |
[INFO] [stderr] 97 |                retain: bool,
[INFO] [stderr]    |                ^^^^^^ help: consider prefixing with an underscore: `_retain`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic`
[INFO] [stderr]   --> src/mqtt/session.rs:98:16
[INFO] [stderr]    |
[INFO] [stderr] 98 |                topic: &'a str,
[INFO] [stderr]    |                ^^^^^ help: consider prefixing with an underscore: `_topic`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]   --> src/mqtt/session.rs:99:16
[INFO] [stderr]    |
[INFO] [stderr] 99 |                packet_id: Option<PacketId>,
[INFO] [stderr]    |                ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `payload`
[INFO] [stderr]    --> src/mqtt/session.rs:100:16
[INFO] [stderr]     |
[INFO] [stderr] 100 |                payload: &'a str) -> Result<()> {
[INFO] [stderr]     |                ^^^^^^^ help: consider prefixing with an underscore: `_payload`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:105:41
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn puback(&self, addr: &SocketAddr, packet_id: PacketId) -> Result<()> {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:110:41
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn pubrec(&self, addr: &SocketAddr, packet_id: PacketId) -> Result<()> {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:115:41
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn pubrel(&self, addr: &SocketAddr, packet_id: PacketId) -> Result<()> {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:120:42
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn pubcomp(&self, addr: &SocketAddr, packet_id: PacketId) -> Result<()> {
[INFO] [stderr]     |                                          ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |         packet_id: PacketId,
[INFO] [stderr]     |         ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]    --> src/mqtt/session.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |         topic_filters: &'a[(&'a str, QualityOfService)]
[INFO] [stderr]     |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_topic_filters`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:138:9
[INFO] [stderr]     |
[INFO] [stderr] 138 |         packet_id: PacketId,
[INFO] [stderr]     |         ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]    --> src/mqtt/session.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 |         topic_filters: &'a[&'a str]
[INFO] [stderr]     |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_topic_filters`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `bytes`
[INFO] [stderr]   --> src/mqtt/remaining_length.rs:83:23
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn from_bytes(bytes: &[u8]) -> Result<Self> {
[INFO] [stderr]    |                       ^^^^^ help: consider prefixing with an underscore: `_bytes`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sink`
[INFO] [stderr]   --> src/mqtt/variable_header.rs:57:19
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                   ^^^^ help: consider prefixing with an underscore: `_sink`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]   --> src/mqtt/variable_header.rs:61:11
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |           ^^^^^^ help: consider prefixing with an underscore: `_source`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sink`
[INFO] [stderr]   --> src/mqtt/payload.rs:87:19
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn ser(&self, sink: &mut Write) -> Result<usize> {
[INFO] [stderr]    |                   ^^^^ help: consider prefixing with an underscore: `_sink`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]   --> src/mqtt/payload.rs:91:11
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn de(source: &mut Read) -> Result<(Self, usize)> {
[INFO] [stderr]    |           ^^^^^^ help: consider prefixing with an underscore: `_source`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic`
[INFO] [stderr]   --> src/mqtt/message.rs:90:50
[INFO] [stderr]    |
[INFO] [stderr] 90 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } => {
[INFO] [stderr]    |                                                  ^^^^^ help: try ignoring the field: `topic: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]   --> src/mqtt/message.rs:90:57
[INFO] [stderr]    |
[INFO] [stderr] 90 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } => {
[INFO] [stderr]    |                                                         ^^^^^^^^^ help: try ignoring the field: `packet_id: _`
[INFO] [stderr] warning: method is never used: `from_qos`
[INFO] [stderr]   --> src/mqtt/payload.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn from_qos(qos: Option<QualityOfService>) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_qos`
[INFO] [stderr]   --> src/mqtt/payload.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn to_qos(&self) -> Option<QualityOfService> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_byte`
[INFO] [stderr]   --> src/mqtt/payload.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn to_byte(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_byte`
[INFO] [stderr] warning: unused variable: `payload`
[INFO] [stderr]   --> src/mqtt/message.rs:90:68
[INFO] [stderr]    |
[INFO] [stderr] 90 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } => {
[INFO] [stderr]    |                                                                    ^^^^^^^ help: try ignoring the field: `payload: _`
[INFO] [stderr]   --> src/mqtt/payload.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn from_byte(byte: u8) -> Result<Self> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]   --> src/mqtt/message.rs:95:34
[INFO] [stderr]    |
[INFO] [stderr] 95 |             Message::Subscribe { packet_id, topic_filters } => [false, false, true, false],
[INFO] [stderr]    |                                  ^^^^^^^^^ help: try ignoring the field: `packet_id: _`
[INFO] [stderr] warning: field is never used: `filters`
[INFO] [stderr]  --> src/mqtt/session.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     filters: BTreeMap<QualityOfService, BTreeSet<&'a str>>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `will`
[INFO] [stderr]  --> src/mqtt/session.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 
[INFO] [stderr] 8 |     will: Option<Will<'a>>
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `subscribe`
[INFO] [stderr]   --> src/mqtt/session.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn subscribe(&mut self, qos: QualityOfService, topic_filter: &'a str) -> bool {
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]   --> src/mqtt/message.rs:95:45
[INFO] [stderr]    |
[INFO] [stderr] 95 |             Message::Subscribe { packet_id, topic_filters } => [false, false, true, false],
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^ help: try ignoring the field: `topic_filters: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]   --> src/mqtt/message.rs:96:36
[INFO] [stderr]    |
[INFO] [stderr] 96 |             Message::Unsubscribe { packet_id, topic_filters } => [false, false, true, false],
[INFO] [stderr]    |                                    ^^^^^^^^^ help: try ignoring the field: `packet_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]   --> src/mqtt/message.rs:96:47
[INFO] [stderr]    |
[INFO] [stderr] 96 |             Message::Unsubscribe { packet_id, topic_filters } => [false, false, true, false],
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^ help: try ignoring the field: `topic_filters: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `client_id`
[INFO] [stderr]    --> src/mqtt/message.rs:117:17
[INFO] [stderr]     |
[INFO] [stderr] 117 |                 client_id,
[INFO] [stderr]     |                 ^^^^^^^^^ help: try ignoring the field: `client_id: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dup`
[INFO] [stderr]    --> src/mqtt/message.rs:145:32
[INFO] [stderr]     |
[INFO] [stderr] 145 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } =>
[INFO] [stderr]     |                                ^^^ help: try ignoring the field: `dup: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `qos`
[INFO] [stderr]    --> src/mqtt/message.rs:145:37
[INFO] [stderr]     |
[INFO] [stderr] 145 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } =>
[INFO] [stderr]     |                                     ^^^ help: try ignoring the field: `qos: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `retain`
[INFO] [stderr]    --> src/mqtt/message.rs:145:42
[INFO] [stderr]     |
[INFO] [stderr] 145 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } =>
[INFO] [stderr]     |                                          ^^^^^^ help: try ignoring the field: `retain: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `payload`
[INFO] [stderr]    --> src/mqtt/message.rs:145:68
[INFO] [stderr]     |
[INFO] [stderr] 145 |             Message::Publish { dup, qos, retain, topic, packet_id, payload } =>
[INFO] [stderr]     |                                                                    ^^^^^^^ help: try ignoring the field: `payload: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]    --> src/mqtt/message.rs:147:44
[INFO] [stderr]     |
[INFO] [stderr] 147 |             Message::Subscribe{ packet_id, topic_filters } =>
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^ help: try ignoring the field: `topic_filters: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `return_codes`
[INFO] [stderr]    --> src/mqtt/message.rs:149:41
[INFO] [stderr]     |
[INFO] [stderr] 149 |             Message::Suback{ packet_id, return_codes } =>
[INFO] [stderr]     |                                         ^^^^^^^^^^^^ help: try ignoring the field: `return_codes: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]    --> src/mqtt/message.rs:151:47
[INFO] [stderr]     |
[INFO] [stderr] 151 |             Message::Unsubscribe { packet_id, topic_filters } =>
[INFO] [stderr]     |                                               ^^^^^^^^^^^^^ help: try ignoring the field: `topic_filters: _`
[INFO] [stderr] 
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `client_id`
[INFO] [stderr]   --> src/mqtt/session.rs:76:20
[INFO] [stderr]    |
[INFO] [stderr] 76 |                    client_id: &'a str,
[INFO] [stderr]    |                    ^^^^^^^^^ help: consider prefixing with an underscore: `_client_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `username`
[INFO] [stderr]   --> src/mqtt/session.rs:77:20
[INFO] [stderr]    |
[INFO] [stderr] 77 |                    username: &'a str,
[INFO] [stderr]    |                    ^^^^^^^^ help: consider prefixing with an underscore: `_username`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `password`
[INFO] [stderr]   --> src/mqtt/session.rs:78:20
[INFO] [stderr]    |
[INFO] [stderr] 78 |                    password: &'a str,
[INFO] [stderr]    |                    ^^^^^^^^ help: consider prefixing with an underscore: `_password`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clean_session`
[INFO] [stderr]   --> src/mqtt/session.rs:80:20
[INFO] [stderr]    |
[INFO] [stderr] 80 |                    clean_session: bool,
[INFO] [stderr]    |                    ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_clean_session`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keep_alive`
[INFO] [stderr]   --> src/mqtt/session.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 |                    keep_alive: u16
[INFO] [stderr]    |                    ^^^^^^^^^^ help: consider prefixing with an underscore: `_keep_alive`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dup`
[INFO] [stderr]   --> src/mqtt/session.rs:95:16
[INFO] [stderr]    |
[INFO] [stderr] 95 |                dup: bool,
[INFO] [stderr]    |                ^^^ help: consider prefixing with an underscore: `_dup`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `qos`
[INFO] [stderr]   --> src/mqtt/session.rs:96:16
[INFO] [stderr]    |
[INFO] [stderr] 96 |                qos: QualityOfService,
[INFO] [stderr]    |                ^^^ help: consider prefixing with an underscore: `_qos`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `retain`
[INFO] [stderr]   --> src/mqtt/session.rs:97:16
[INFO] [stderr]    |
[INFO] [stderr] 97 |                retain: bool,
[INFO] [stderr]    |                ^^^^^^ help: consider prefixing with an underscore: `_retain`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic`
[INFO] [stderr]   --> src/mqtt/session.rs:98:16
[INFO] [stderr]    |
[INFO] [stderr] 98 |                topic: &'a str,
[INFO] [stderr]    |                ^^^^^ help: consider prefixing with an underscore: `_topic`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]   --> src/mqtt/session.rs:99:16
[INFO] [stderr]    |
[INFO] [stderr] 99 |                packet_id: Option<PacketId>,
[INFO] [stderr]    |                ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `payload`
[INFO] [stderr]    --> src/mqtt/session.rs:100:16
[INFO] [stderr]     |
[INFO] [stderr] 100 |                payload: &'a str) -> Result<()> {
[INFO] [stderr]     |                ^^^^^^^ help: consider prefixing with an underscore: `_payload`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:105:41
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn puback(&self, addr: &SocketAddr, packet_id: PacketId) -> Result<()> {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:110:41
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn pubrec(&self, addr: &SocketAddr, packet_id: PacketId) -> Result<()> {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:115:41
[INFO] [stderr]     |
[INFO] [stderr] 115 |     fn pubrel(&self, addr: &SocketAddr, packet_id: PacketId) -> Result<()> {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:120:42
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn pubcomp(&self, addr: &SocketAddr, packet_id: PacketId) -> Result<()> {
[INFO] [stderr]     |                                          ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:128:9
[INFO] [stderr]     |
[INFO] [stderr] 128 |         packet_id: PacketId,
[INFO] [stderr]     |         ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]    --> src/mqtt/session.rs:129:9
[INFO] [stderr]     |
[INFO] [stderr] 129 |         topic_filters: &'a[(&'a str, QualityOfService)]
[INFO] [stderr]     |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_topic_filters`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `packet_id`
[INFO] [stderr]    --> src/mqtt/session.rs:138:9
[INFO] [stderr]     |
[INFO] [stderr] 138 |         packet_id: PacketId,
[INFO] [stderr]     |         ^^^^^^^^^ help: consider prefixing with an underscore: `_packet_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `topic_filters`
[INFO] [stderr]    --> src/mqtt/session.rs:139:9
[INFO] [stderr]     |
[INFO] [stderr] 139 |         topic_filters: &'a[&'a str]
[INFO] [stderr]     |         ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_topic_filters`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_qos`
[INFO] [stderr]   --> src/mqtt/payload.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn from_qos(qos: Option<QualityOfService>) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_qos`
[INFO] [stderr]   --> src/mqtt/payload.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn to_qos(&self) -> Option<QualityOfService> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_byte`
[INFO] [stderr]   --> src/mqtt/payload.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     fn to_byte(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_byte`
[INFO] [stderr]   --> src/mqtt/payload.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn from_byte(byte: u8) -> Result<Self> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `filters`
[INFO] [stderr]  --> src/mqtt/session.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     filters: BTreeMap<QualityOfService, BTreeSet<&'a str>>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `will`
[INFO] [stderr]  --> src/mqtt/session.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     will: Option<Will<'a>>
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `subscribe`
[INFO] [stderr]   --> src/mqtt/session.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn subscribe(&mut self, qos: QualityOfService, topic_filter: &'a str) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::BTreeMap`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::BTreeMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::io`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use tokio::io;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::net::tcp`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use tokio::net::tcp;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::io::AsyncWrite`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use tokio::io::AsyncWrite;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::net::TcpStream`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use tokio::net::TcpStream;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sessions`
[INFO] [stderr]   --> src/main.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let sessions = mqtt::Sessions::new();
[INFO] [stderr]    |         ^^^^^^^^ help: consider prefixing with an underscore: `_sessions`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::BTreeMap`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::collections::BTreeMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::io`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use tokio::io;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::net::tcp`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use tokio::net::tcp;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::io::AsyncWrite`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use tokio::io::AsyncWrite;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::net::TcpStream`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use tokio::net::TcpStream;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sessions`
[INFO] [stderr]   --> src/main.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     let sessions = mqtt::Sessions::new();
[INFO] [stderr]    |         ^^^^^^^^ help: consider prefixing with an underscore: `_sessions`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.64s
[INFO] running `"docker" "inspect" "9a79ca7ea5e68bb42d27958a67f37bb37084c382d1c1188615e5e044357b07e6"`
[INFO] running `"docker" "rm" "-f" "9a79ca7ea5e68bb42d27958a67f37bb37084c382d1c1188615e5e044357b07e6"`
[INFO] [stdout] 9a79ca7ea5e68bb42d27958a67f37bb37084c382d1c1188615e5e044357b07e6