[INFO] cloning repository https://github.com/amogh-dambal/cueball
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amogh-dambal/cueball" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famogh-dambal%2Fcueball", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famogh-dambal%2Fcueball'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fb0a575faf6b2c393cc87e750fefc1050f0b928c
[INFO] checking amogh-dambal/cueball against master#040e2f8b9ff2d76fbe2146d6003e297ed4532088 for pr-143619
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famogh-dambal%2Fcueball" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/amogh-dambal/cueball
[INFO] finished tweaking git repo https://github.com/amogh-dambal/cueball
[INFO] tweaked toml for git repo https://github.com/amogh-dambal/cueball written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/amogh-dambal/cueball on toolchain 040e2f8b9ff2d76fbe2146d6003e297ed4532088
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/amogh-dambal/cueball already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitbybit v1.3.2
[INFO] [stderr]   Downloaded arbitrary-int v1.2.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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_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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c960fdcfa181c09a464ddcc3315db490bd8f992f636f5b4221746845316ea8d
[INFO] running `Command { std: "docker" "start" "-a" "1c960fdcfa181c09a464ddcc3315db490bd8f992f636f5b4221746845316ea8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c960fdcfa181c09a464ddcc3315db490bd8f992f636f5b4221746845316ea8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c960fdcfa181c09a464ddcc3315db490bd8f992f636f5b4221746845316ea8d", kill_on_drop: false }`
[INFO] [stdout] 1c960fdcfa181c09a464ddcc3315db490bd8f992f636f5b4221746845316ea8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e8955075918b6d00525c617f7c34ee2595c70db70b3cf844dc875e4d3604499b" "/opt/rustwide/cargo-home/bin/cargo" "+040e2f8b9ff2d76fbe2146d6003e297ed4532088" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 829c6603e9efc8bbd910b9ece2b7f15961514265ad68d80aa2d0e780713c2ea0
[INFO] running `Command { std: "docker" "start" "-a" "829c6603e9efc8bbd910b9ece2b7f15961514265ad68d80aa2d0e780713c2ea0", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.84
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling autocfg v1.3.0
[INFO] [stderr]    Compiling arbitrary-int v1.2.7
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling bitbybit v1.3.2
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]     Checking cueball v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `mqtt::packet`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mqtt::packet;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mqtt::packet`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use mqtt::packet;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Number`
[INFO] [stdout]  --> src/mqtt/packet.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use arbitrary_int::{u7, Number};
[INFO] [stdout]   |                         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:32:29
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn write<W: Buf>(&self, buf: &mut W) {
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/mqtt/packet/unsubscribe.rs:28:29
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn write<W: Buf>(&self, buf: &mut W) {
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `QosLevel` is never used
[INFO] [stdout]  --> src/mqtt.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub enum QosLevel {
[INFO] [stdout]   |          ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PROTOCOL_VERSION_FIELD_SIZE_BYTES` is never used
[INFO] [stdout]   --> src/mqtt/packet.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 | const PROTOCOL_VERSION_FIELD_SIZE_BYTES: usize = 1;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `PROTOCOL_NAME_FIELD_SIZE_BYTES` is never used
[INFO] [stdout]   --> src/mqtt/packet.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const PROTOCOL_NAME_FIELD_SIZE_BYTES: usize = 6;
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Type` is never used
[INFO] [stdout]   --> src/mqtt/packet.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub enum Type {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ConnAck` is never constructed
[INFO] [stdout]   --> src/mqtt/packet.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct ConnAck {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `SubAck` is never constructed
[INFO] [stdout]   --> src/mqtt/packet.rs:54:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub struct SubAck {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Packet` is never used
[INFO] [stdout]   --> src/mqtt/packet.rs:60:10
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub enum Packet {
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `new` is never used
[INFO] [stdout]   --> src/mqtt/packet.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub fn new<R: Buf>(buf: &mut R) -> Packet {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Ack` is never constructed
[INFO] [stdout]  --> src/mqtt/packet/ack.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Ack {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PubAck` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:15:10
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub type PubAck = Ack;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PubRec` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub type PubRec = Ack;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PubRel` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub type PubRel = Ack;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PubComp` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub type PubComp = Ack;
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `UnsubAck` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub type UnsubAck = Ack;
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PingReq` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub type PingReq = Ack;
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `PingResp` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub type PingResp = Ack;
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Disconnect` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub type Disconnect = Ack;
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_packet` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn read_packet<R: Buf>(buf: &mut R, header: &FixedHeader) -> Ack {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Ack {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] 32 |     fn write<W: Buf>(&self, buf: &mut W) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Connect` is never constructed
[INFO] [stdout]   --> src/mqtt/packet/connect.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct Connect {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_packet` is never used
[INFO] [stdout]   --> src/mqtt/packet/connect.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn read_packet<R: Buf>(buf: &mut R, header: &FixedHeader) -> Connect {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]    --> src/mqtt/packet/connect.rs:138:8
[INFO] [stdout]     |
[INFO] [stdout] 137 | impl Connect {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] 138 |     fn write<W: Buf>(&self, _buf: &mut W) {}
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FixedHeader` is never constructed
[INFO] [stdout]   --> src/mqtt/packet/fixed_header.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub struct FixedHeader {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `read` and `decode_remaining_length` are never used
[INFO] [stdout]   --> src/mqtt/packet/fixed_header.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl FixedHeader {
[INFO] [stdout]    | ---------------- associated functions in this implementation
[INFO] [stdout] 29 |     pub fn read<R: Buf>(buf: &mut R) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     fn decode_remaining_length<R: Buf>(buf: &mut R) -> u64 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Number`
[INFO] [stdout]  --> src/mqtt/packet.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use arbitrary_int::{u7, Number};
[INFO] [stdout]   |                         ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Publish` is never constructed
[INFO] [stdout]   --> src/mqtt/packet/publish.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Publish {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_packet` is never used
[INFO] [stdout]   --> src/mqtt/packet/publish.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn read_packet<R: Buf>(buf: &mut R, header: &FixedHeader) -> Publish {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]   --> src/mqtt/packet/publish.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Publish {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 48 |     fn write<W: Buf>(&self, _buf: &mut W) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Subscribe` is never constructed
[INFO] [stdout]  --> src/mqtt/packet/subscribe.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub struct Subscribe {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_packet` is never used
[INFO] [stdout]   --> src/mqtt/packet/subscribe.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn read_packet<R: Buf>(buf: &mut R, header: &FixedHeader) -> Subscribe {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]   --> src/mqtt/packet/subscribe.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Subscribe {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 28 |     fn write<W: bytes::Buf>(&self, _buf: &mut W) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Unsubscribe` is never constructed
[INFO] [stdout]  --> src/mqtt/packet/unsubscribe.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Unsubscribe {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `read_packet` is never used
[INFO] [stdout]   --> src/mqtt/packet/unsubscribe.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub fn read_packet<R: Buf>(buf: &mut R, header: &FixedHeader) -> Unsubscribe {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]   --> src/mqtt/packet/unsubscribe.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Unsubscribe {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] 27 |    
[INFO] [stdout] 28 |     fn write<W: Buf>(&self, buf: &mut W) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Topic` is never constructed
[INFO] [stdout]  --> src/mqtt/utils/topic.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Topic {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `new_from_params` are never used
[INFO] [stdout]   --> src/mqtt/utils/topic.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Topic {
[INFO] [stdout]    | ---------- associated functions in this implementation
[INFO] [stdout] 10 |     pub fn new<R: Buf>(buf: &mut R) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub fn new_from_params(name: String, qos: u8) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:32:29
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn write<W: Buf>(&self, buf: &mut W) {
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `buf`
[INFO] [stdout]   --> src/mqtt/packet/unsubscribe.rs:28:29
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn write<W: Buf>(&self, buf: &mut W) {
[INFO] [stdout]    |                             ^^^ help: if this is intentional, prefix it with an underscore: `_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `packet`
[INFO] [stdout]    --> src/mqtt/packet.rs:115:17
[INFO] [stdout]     |
[INFO] [stdout] 115 |             let packet = new(&mut buf);
[INFO] [stdout]     |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_packet`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ExactlyOnce` is never constructed
[INFO] [stdout]   --> src/mqtt.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub enum QosLevel {
[INFO] [stdout]    |          -------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 11 |     ExactlyOnce,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `header` and `flags` are never read
[INFO] [stdout]   --> src/mqtt/packet.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub struct ConnAck {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 50 |     header: FixedHeader,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 51 |     flags: ConnAckFlags,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `header`, `packet_id`, and `return_codes` are never read
[INFO] [stdout]   --> src/mqtt/packet.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | pub struct SubAck {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 55 |     header: FixedHeader,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 56 |     packet_id: u16,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 57 |     return_codes: Vec<u16>,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/mqtt/packet.rs:61:13
[INFO] [stdout]    |
[INFO] [stdout] 61 |     Connect(connect::Connect),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 61 -     Connect(connect::Connect),
[INFO] [stdout] 61 +     Connect(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/mqtt/packet.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |     Publish(publish::Publish),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 63 -     Publish(publish::Publish),
[INFO] [stdout] 63 +     Publish(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/mqtt/packet.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     PubAck(ack::PubAck),
[INFO] [stdout]    |     ------ ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 64 -     PubAck(ack::PubAck),
[INFO] [stdout] 64 +     PubAck(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/mqtt/packet.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     PubRec(ack::PubRec),
[INFO] [stdout]    |     ------ ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 65 -     PubRec(ack::PubRec),
[INFO] [stdout] 65 +     PubRec(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/mqtt/packet.rs:66:12
[INFO] [stdout]    |
[INFO] [stdout] 66 |     PubRel(ack::PubRel),
[INFO] [stdout]    |     ------ ^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 66 -     PubRel(ack::PubRel),
[INFO] [stdout] 66 +     PubRel(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/mqtt/packet.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |     PubComp(ack::PubComp),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 67 -     PubComp(ack::PubComp),
[INFO] [stdout] 67 +     PubComp(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/mqtt/packet.rs:68:15
[INFO] [stdout]    |
[INFO] [stdout] 68 |     Subscribe(subscribe::Subscribe),
[INFO] [stdout]    |     --------- ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 68 -     Subscribe(subscribe::Subscribe),
[INFO] [stdout] 68 +     Subscribe(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/mqtt/packet.rs:70:17
[INFO] [stdout]    |
[INFO] [stdout] 70 |     Unsubscribe(unsubscribe::Unsubscribe),
[INFO] [stdout]    |     ----------- ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 70 -     Unsubscribe(unsubscribe::Unsubscribe),
[INFO] [stdout] 70 +     Unsubscribe(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/mqtt/packet.rs:71:14
[INFO] [stdout]    |
[INFO] [stdout] 71 |     UnsubAck(ack::UnsubAck),
[INFO] [stdout]    |     -------- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 71 -     UnsubAck(ack::UnsubAck),
[INFO] [stdout] 71 +     UnsubAck(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ConnAck`, `SubAck`, `PingReq`, `PingResp`, and `Disconnect` are never constructed
[INFO] [stdout]   --> src/mqtt/packet.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 60 | pub enum Packet {
[INFO] [stdout]    |          ------ variants in this enum
[INFO] [stdout] 61 |     Connect(connect::Connect),
[INFO] [stdout] 62 |     ConnAck(ConnAck),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     SubAck(SubAck),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 72 |     PingReq(ack::PingReq),
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 73 |     PingResp(ack::PingResp),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 74 |     Disconnect(ack::Disconnect),
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]   --> src/mqtt/packet/ack.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Ack {
[INFO] [stdout]    | -------- method in this implementation
[INFO] [stdout] 32 |     fn write<W: Buf>(&self, buf: &mut W) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]    --> src/mqtt/packet/connect.rs:138:8
[INFO] [stdout]     |
[INFO] [stdout] 137 | impl Connect {
[INFO] [stdout]     | ------------ method in this implementation
[INFO] [stdout] 138 |     fn write<W: Buf>(&self, _buf: &mut W) {}
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]   --> src/mqtt/packet/publish.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Publish {
[INFO] [stdout]    | ------------ method in this implementation
[INFO] [stdout] 48 |     fn write<W: Buf>(&self, _buf: &mut W) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]   --> src/mqtt/packet/subscribe.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl Subscribe {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 28 |     fn write<W: bytes::Buf>(&self, _buf: &mut W) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `write` is never used
[INFO] [stdout]   --> src/mqtt/packet/unsubscribe.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl Unsubscribe {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] 27 |    
[INFO] [stdout] 28 |     fn write<W: Buf>(&self, buf: &mut W) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.88s
[INFO] running `Command { std: "docker" "inspect" "829c6603e9efc8bbd910b9ece2b7f15961514265ad68d80aa2d0e780713c2ea0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "829c6603e9efc8bbd910b9ece2b7f15961514265ad68d80aa2d0e780713c2ea0", kill_on_drop: false }`
[INFO] [stdout] 829c6603e9efc8bbd910b9ece2b7f15961514265ad68d80aa2d0e780713c2ea0