[INFO] cloning repository https://github.com/Murano/simple-rust-websocket-server
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Murano/simple-rust-websocket-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMurano%2Fsimple-rust-websocket-server"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMurano%2Fsimple-rust-websocket-server'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 10bc1d52e0c2866ab33303182f8e97786879eb3e
[INFO] checking Murano/simple-rust-websocket-server against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMurano%2Fsimple-rust-websocket-server" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Murano/simple-rust-websocket-server on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Murano/simple-rust-websocket-server
[INFO] finished tweaking git repo https://github.com/Murano/simple-rust-websocket-server
[INFO] tweaked toml for git repo https://github.com/Murano/simple-rust-websocket-server written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Murano/simple-rust-websocket-server already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] 95f3df624d61aa339edefb63c003f4371a1d0c993296171db31ed4b4d0111721
[INFO] running `"docker" "start" "-a" "95f3df624d61aa339edefb63c003f4371a1d0c993296171db31ed4b4d0111721"`
[INFO] [stderr]    Compiling gcc v0.3.43
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking lazycell v0.4.0
[INFO] [stderr]     Checking net2 v0.2.26
[INFO] [stderr]     Checking mio v0.6.4
[INFO] [stderr]    Compiling http-muncher v0.3.1
[INFO] [stderr]     Checking chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Handler`
[INFO] [stderr]  --> src/main.rs:2:34
[INFO] [stderr]   |
[INFO] [stderr] 2 | use mio::deprecated::{EventLoop, Handler};
[INFO] [stderr]   |                                  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `websocket_client::*`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use websocket_client::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Handler`
[INFO] [stderr]  --> src/main.rs:2:34
[INFO] [stderr]   |
[INFO] [stderr] 2 | use mio::deprecated::{EventLoop, Handler};
[INFO] [stderr]   |                                  ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `websocket_client::*`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use websocket_client::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/websocket_server.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/websocket_server.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `events`
[INFO] [stderr]   --> src/websocket_server.rs:22:28
[INFO] [stderr]    |
[INFO] [stderr] 22 |              token: Token, events: Ready)
[INFO] [stderr]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_events`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/websocket_server.rs:45:21
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 let mut client = self.clients.get_mut(&token).unwrap();
[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: unused variable: `events`
[INFO] [stderr]   --> src/websocket_server.rs:22:28
[INFO] [stderr]    |
[INFO] [stderr] 22 |              token: Token, events: Ready)
[INFO] [stderr]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_events`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/websocket_server.rs:45:21
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 let mut client = self.clients.get_mut(&token).unwrap();
[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: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.49s
[INFO] running `"docker" "inspect" "95f3df624d61aa339edefb63c003f4371a1d0c993296171db31ed4b4d0111721"`
[INFO] running `"docker" "rm" "-f" "95f3df624d61aa339edefb63c003f4371a1d0c993296171db31ed4b4d0111721"`
[INFO] [stdout] 95f3df624d61aa339edefb63c003f4371a1d0c993296171db31ed4b4d0111721