[INFO] cloning repository https://github.com/bracoe/mqtt_broker
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bracoe/mqtt_broker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbracoe%2Fmqtt_broker"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbracoe%2Fmqtt_broker'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7eff20ad9ce72227f07358f3af0b341791920c40
[INFO] checking bracoe/mqtt_broker against try#89c05fd3cc6404a13e1bd71450c6132a2755fa4b for pr-69741
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbracoe%2Fmqtt_broker" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bracoe/mqtt_broker on toolchain 89c05fd3cc6404a13e1bd71450c6132a2755fa4b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bracoe/mqtt_broker
[INFO] finished tweaking git repo https://github.com/bracoe/mqtt_broker
[INFO] tweaked toml for git repo https://github.com/bracoe/mqtt_broker written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/bracoe/mqtt_broker already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "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] d3bf559ecb02e3f51be587484a1cb6409acb69529806027e47a36ae3384ccf12
[INFO] running `"docker" "start" "-a" "d3bf559ecb02e3f51be587484a1cb6409acb69529806027e47a36ae3384ccf12"`
[INFO] [stderr]     Checking mqtt_broker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `chashmap::CHashMap`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use chashmap::CHashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mutex`
[INFO] [stderr]   --> src/main.rs:10:22
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::sync::{Arc, Mutex, RwLock};
[INFO] [stderr]    |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::time;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `chashmap::CHashMap`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use chashmap::CHashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Mutex`
[INFO] [stderr]   --> src/main.rs:10:22
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::sync::{Arc, Mutex, RwLock};
[INFO] [stderr]    |                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::time`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::time;
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:101:18
[INFO] [stderr]     |
[INFO] [stderr] 101 | fn handle_client(mut stream: TcpStream, socket_address: SocketAddr, sub_map: &Arc<RwLock<HashMap<String, Vec<SocketAddr>>>>){
[INFO] [stderr]     |                  ----^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:101:18
[INFO] [stderr]     |
[INFO] [stderr] 101 | fn handle_client(mut stream: TcpStream, socket_address: SocketAddr, sub_map: &Arc<RwLock<HashMap<String, Vec<SocketAddr>>>>){
[INFO] [stderr]     |                  ----^^^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_CONNACK`
[INFO] [stderr]   --> src/main.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | const TYPE_CONNACK: u8 = 2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_PUBACK`
[INFO] [stderr]   --> src/main.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | const TYPE_PUBACK: u8 = 4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_PUBREC`
[INFO] [stderr]   --> src/main.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | const TYPE_PUBREC: u8 = 5;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_PUBREL`
[INFO] [stderr]   --> src/main.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | const TYPE_PUBREL: u8 = 6;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_PUBCOMP`
[INFO] [stderr]   --> src/main.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | const TYPE_PUBCOMP: u8 = 7;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_SUBACK`
[INFO] [stderr]   --> src/main.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | const TYPE_SUBACK: u8 = 9;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_UNSUBACK`
[INFO] [stderr]   --> src/main.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | const TYPE_UNSUBACK: u8 = 11;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_PINGRESP`
[INFO] [stderr]   --> src/main.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | const TYPE_PINGRESP: u8 = 13;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_keep_alive_from_conn_msg`
[INFO] [stderr]    --> src/main.rs:148:4
[INFO] [stderr]     |
[INFO] [stderr] 148 | fn get_keep_alive_from_conn_msg(message:MqttMessage) -> std::time::Duration{
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_CONNACK`
[INFO] [stderr]   --> src/main.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | const TYPE_CONNACK: u8 = 2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_PUBACK`
[INFO] [stderr]   --> src/main.rs:27:1
[INFO] [stderr]    |
[INFO] [stderr] 27 | const TYPE_PUBACK: u8 = 4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_PUBREC`
[INFO] [stderr]   --> src/main.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | const TYPE_PUBREC: u8 = 5;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_PUBREL`
[INFO] [stderr]   --> src/main.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | const TYPE_PUBREL: u8 = 6;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_PUBCOMP`
[INFO] [stderr]   --> src/main.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | const TYPE_PUBCOMP: u8 = 7;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_SUBACK`
[INFO] [stderr]   --> src/main.rs:32:1
[INFO] [stderr]    |
[INFO] [stderr] 32 | const TYPE_SUBACK: u8 = 9;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_UNSUBACK`
[INFO] [stderr]   --> src/main.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | const TYPE_UNSUBACK: u8 = 11;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TYPE_PINGRESP`
[INFO] [stderr]   --> src/main.rs:36:1
[INFO] [stderr]    |
[INFO] [stderr] 36 | const TYPE_PINGRESP: u8 = 13;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_keep_alive_from_conn_msg`
[INFO] [stderr]    --> src/main.rs:148:4
[INFO] [stderr]     |
[INFO] [stderr] 148 | fn get_keep_alive_from_conn_msg(message:MqttMessage) -> std::time::Duration{
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `"docker" "inspect" "d3bf559ecb02e3f51be587484a1cb6409acb69529806027e47a36ae3384ccf12"`
[INFO] running `"docker" "rm" "-f" "d3bf559ecb02e3f51be587484a1cb6409acb69529806027e47a36ae3384ccf12"`
[INFO] [stdout] d3bf559ecb02e3f51be587484a1cb6409acb69529806027e47a36ae3384ccf12