[INFO] updating cached repository https://github.com/ivosequeros/aletheia
[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] d433d21a9c34765dc55a211158fc1d64a953b0d9
[INFO] checking ivosequeros/aletheia against try#1a399c10897767c36d147199696c96f193034e49 for pr-72644
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivosequeros%2Faletheia" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ivosequeros/aletheia on toolchain 1a399c10897767c36d147199696c96f193034e49
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a399c10897767c36d147199696c96f193034e49" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ivosequeros/aletheia
[INFO] finished tweaking git repo https://github.com/ivosequeros/aletheia
[INFO] tweaked toml for git repo https://github.com/ivosequeros/aletheia written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/ivosequeros/aletheia already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a399c10897767c36d147199696c96f193034e49" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+1a399c10897767c36d147199696c96f193034e49" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9638993977ebbfe723aca7706fb3100fbc6a524702d00243818a4eb095b62140
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "9638993977ebbfe723aca7706fb3100fbc6a524702d00243818a4eb095b62140"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling memchr v2.3.3
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[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]     Checking futures-io v0.3.4
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[INFO] [stderr]    Compiling serde v1.0.110
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[INFO] [stderr]     Checking tokio v0.2.21
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[INFO] [stderr] warning: unused import: `ConnectionError`
[INFO] [stderr]  --> src/server/connection.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::errors::{ConnectionError};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AsyncBufReadExt`, `AsyncRead`
[INFO] [stderr]  --> src/server/client.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use tokio::io::{AsyncRead, AsyncBufReadExt};
[INFO] [stderr]   |                 ^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::prelude::*`
[INFO] [stderr]  --> src/server/client.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use tokio::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Weak`
[INFO] [stderr]  --> src/server/client.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::sync::{Arc, Weak};
[INFO] [stderr]   |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ReceiveStringError`
[INFO] [stderr]  --> src/server/client.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::errors::{ReceiveStringError};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `OwnedReadHalf`, `OwnedWriteHalf`
[INFO] [stderr]   --> src/server/mod.rs:10:23
[INFO] [stderr]    |
[INFO] [stderr] 10 | use tokio::net::tcp::{OwnedReadHalf, OwnedWriteHalf};
[INFO] [stderr]    |                       ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `AsyncRead`
[INFO] [stderr]  --> src/protocol/message.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use tokio::io::{AsyncRead, AsyncReadExt};
[INFO] [stderr]   |                 ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `OwnedReadHalf`
[INFO] [stderr]  --> src/protocol/message.rs:2:23
[INFO] [stderr]   |
[INFO] [stderr] 2 | use tokio::net::tcp::{OwnedReadHalf};
[INFO] [stderr]   |                       ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::io::BufReader`
[INFO] [stderr]  --> src/protocol/message.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use tokio::io::BufReader;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::protocol::types::Command`
[INFO] [stderr]  --> src/protocol/message.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::protocol::types::Command;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ConnectionError`
[INFO] [stderr]  --> src/server/connection.rs:5:21
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::errors::{ConnectionError};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `AsyncBufReadExt`, `AsyncRead`
[INFO] [stderr]  --> src/server/client.rs:2:17
[INFO] [stderr]   |
[INFO] [stderr] 2 | use tokio::io::{AsyncRead, AsyncBufReadExt};
[INFO] [stderr]   |                 ^^^^^^^^^  ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::prelude::*`
[INFO] [stderr]  --> src/server/client.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use tokio::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Weak`
[INFO] [stderr]  --> src/server/client.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::sync::{Arc, Weak};
[INFO] [stderr]   |                      ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ReceiveStringError`
[INFO] [stderr]  --> src/server/client.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::errors::{ReceiveStringError};
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `OwnedReadHalf`, `OwnedWriteHalf`
[INFO] [stderr]   --> src/server/mod.rs:10:23
[INFO] [stderr]    |
[INFO] [stderr] 10 | use tokio::net::tcp::{OwnedReadHalf, OwnedWriteHalf};
[INFO] [stderr]    |                       ^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `AsyncRead`
[INFO] [stderr]  --> src/protocol/message.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use tokio::io::{AsyncRead, AsyncReadExt};
[INFO] [stderr]   |                 ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `OwnedReadHalf`
[INFO] [stderr]  --> src/protocol/message.rs:2:23
[INFO] [stderr]   |
[INFO] [stderr] 2 | use tokio::net::tcp::{OwnedReadHalf};
[INFO] [stderr]   |                       ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::io::BufReader`
[INFO] [stderr]  --> src/protocol/message.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use tokio::io::BufReader;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::protocol::types::Command`
[INFO] [stderr]  --> src/protocol/message.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::protocol::types::Command;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `client_id_builder`
[INFO] [stderr]   --> src/server/mod.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let client_id_builder = Builder::from_slice(remote_ip);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_client_id_builder`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]   --> src/codec/reader.rs:26:49
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn read<'a, R: AsyncReadExt>(model: &Model, reader: R, offset: usize) -> Result<Type<'a>, Error> {
[INFO] [stderr]    |                                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]   --> src/protocol/ingest.rs:33:47
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub async fn eat<'a, R: AsyncReadExt + Unpin>(reader: Arc<Mutex<R>>) -> Result<&'a [u8], EatingError> {
[INFO] [stderr]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Equal`
[INFO] [stderr]  --> src/selection/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     Equal(Vec<u8>)
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `broadcast`
[INFO] [stderr]   --> src/server/router.rs:28:18
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub async fn broadcast(&self, content: &[u8]) {
[INFO] [stderr]    |                  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Literal`
[INFO] [stderr]  --> src/codec/reader.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Literal(usize),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Record`
[INFO] [stderr]  --> src/codec/reader.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Record(HashMap<&'a str, Type<'a>>)
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Model`
[INFO] [stderr]   --> src/codec/reader.rs:11:10
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub enum Model {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read`
[INFO] [stderr]   --> src/codec/reader.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn read<'a, R: AsyncReadExt>(model: &Model, reader: R, offset: usize) -> Result<Type<'a>, Error> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ack`
[INFO] [stderr]   --> src/protocol/ingest.rs:10:14
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub async fn ack(client: Client) {
[INFO] [stderr]    |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `eat`
[INFO] [stderr]   --> src/protocol/ingest.rs:33:14
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub async fn eat<'a, R: AsyncReadExt + Unpin>(reader: Arc<Mutex<R>>) -> Result<&'a [u8], EatingError> {
[INFO] [stderr]    |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `End`
[INFO] [stderr]   --> src/protocol/message.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     End
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `publish`
[INFO] [stderr]  --> src/protocol/out.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn publish(id: &[u8], content: &[u8]) -> Vec<u8> {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ack`
[INFO] [stderr]  --> src/protocol/out.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn ack(id: &[u8]) -> Vec<u8> {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `nack`
[INFO] [stderr]   --> src/protocol/out.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn nack(id: &[u8]) -> Vec<u8> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Publish`
[INFO] [stderr]  --> src/protocol/types.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Publish = 0x07, /* UTF8: BELL */
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Subscribe`
[INFO] [stderr]  --> src/protocol/types.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Subscribe = 0x05, /* UTF8: ENQUIRY */
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ack`
[INFO] [stderr]  --> src/protocol/types.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Ack = 0x06, /* UTF8: ACK */
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nack`
[INFO] [stderr]  --> src/protocol/types.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Nack = 0x15, /* UTF8: NACK */
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Next`
[INFO] [stderr]  --> src/protocol/types.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Next = 0x04, /* UTF8: END OF TRANSMISSION */
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `End`
[INFO] [stderr]  --> src/protocol/types.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     End = 0x19 /* UTF8: END OF MEDIUM */
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 31 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `client_id_builder`
[INFO] [stderr]   --> src/server/mod.rs:35:13
[INFO] [stderr]    |
[INFO] [stderr] 35 |         let client_id_builder = Builder::from_slice(remote_ip);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_client_id_builder`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]   --> src/codec/reader.rs:26:49
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn read<'a, R: AsyncReadExt>(model: &Model, reader: R, offset: usize) -> Result<Type<'a>, Error> {
[INFO] [stderr]    |                                                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reader`
[INFO] [stderr]   --> src/protocol/ingest.rs:33:47
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub async fn eat<'a, R: AsyncReadExt + Unpin>(reader: Arc<Mutex<R>>) -> Result<&'a [u8], EatingError> {
[INFO] [stderr]    |                                               ^^^^^^ help: if this is intentional, prefix it with an underscore: `_reader`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Equal`
[INFO] [stderr]  --> src/selection/mod.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     Equal(Vec<u8>)
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `broadcast`
[INFO] [stderr]   --> src/server/router.rs:28:18
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub async fn broadcast(&self, content: &[u8]) {
[INFO] [stderr]    |                  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Literal`
[INFO] [stderr]  --> src/codec/reader.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Literal(usize),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Record`
[INFO] [stderr]  --> src/codec/reader.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Record(HashMap<&'a str, Type<'a>>)
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Model`
[INFO] [stderr]   --> src/codec/reader.rs:11:10
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub enum Model {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read`
[INFO] [stderr]   --> src/codec/reader.rs:26:8
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn read<'a, R: AsyncReadExt>(model: &Model, reader: R, offset: usize) -> Result<Type<'a>, Error> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ack`
[INFO] [stderr]   --> src/protocol/ingest.rs:10:14
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub async fn ack(client: Client) {
[INFO] [stderr]    |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `eat`
[INFO] [stderr]   --> src/protocol/ingest.rs:33:14
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub async fn eat<'a, R: AsyncReadExt + Unpin>(reader: Arc<Mutex<R>>) -> Result<&'a [u8], EatingError> {
[INFO] [stderr]    |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `End`
[INFO] [stderr]   --> src/protocol/message.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     End
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `publish`
[INFO] [stderr]  --> src/protocol/out.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn publish(id: &[u8], content: &[u8]) -> Vec<u8> {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ack`
[INFO] [stderr]  --> src/protocol/out.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn ack(id: &[u8]) -> Vec<u8> {
[INFO] [stderr]   |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `nack`
[INFO] [stderr]   --> src/protocol/out.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn nack(id: &[u8]) -> Vec<u8> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Publish`
[INFO] [stderr]  --> src/protocol/types.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Publish = 0x07, /* UTF8: BELL */
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Subscribe`
[INFO] [stderr]  --> src/protocol/types.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Subscribe = 0x05, /* UTF8: ENQUIRY */
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ack`
[INFO] [stderr]  --> src/protocol/types.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Ack = 0x06, /* UTF8: ACK */
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nack`
[INFO] [stderr]  --> src/protocol/types.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Nack = 0x15, /* UTF8: NACK */
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Next`
[INFO] [stderr]  --> src/protocol/types.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Next = 0x04, /* UTF8: END OF TRANSMISSION */
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `End`
[INFO] [stderr]  --> src/protocol/types.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     End = 0x19 /* UTF8: END OF MEDIUM */
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 31 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 17s
[INFO] running `"docker" "inspect" "9638993977ebbfe723aca7706fb3100fbc6a524702d00243818a4eb095b62140"`
[INFO] running `"docker" "rm" "-f" "9638993977ebbfe723aca7706fb3100fbc6a524702d00243818a4eb095b62140"`
[INFO] [stdout] 9638993977ebbfe723aca7706fb3100fbc6a524702d00243818a4eb095b62140