[INFO] cloning repository https://github.com/Jasperav/WebsocketRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Jasperav/WebsocketRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJasperav%2FWebsocketRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJasperav%2FWebsocketRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cfb5c30a54b81f47833c9416b2e2eff1143d2822
[INFO] checking Jasperav/WebsocketRust against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJasperav%2FWebsocketRust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Jasperav/WebsocketRust on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Jasperav/WebsocketRust
[INFO] finished tweaking git repo https://github.com/Jasperav/WebsocketRust
[INFO] tweaked toml for git repo https://github.com/Jasperav/WebsocketRust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Jasperav/WebsocketRust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2f7e4bac7266dbff33009ab12a98e8aa207d544fe7bed34d7693fec56d3c94ff
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2f7e4bac7266dbff33009ab12a98e8aa207d544fe7bed34d7693fec56d3c94ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2f7e4bac7266dbff33009ab12a98e8aa207d544fe7bed34d7693fec56d3c94ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f7e4bac7266dbff33009ab12a98e8aa207d544fe7bed34d7693fec56d3c94ff", kill_on_drop: false }`
[INFO] [stdout] 2f7e4bac7266dbff33009ab12a98e8aa207d544fe7bed34d7693fec56d3c94ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70845fc7d738a5d2aaa72e723b30d4e1434016af82f8b73e88a1d510c9cb3229
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "70845fc7d738a5d2aaa72e723b30d4e1434016af82f8b73e88a1d510c9cb3229", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking smallvec v1.1.0
[INFO] [stderr]     Checking getrandom v0.1.13
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking unicode-normalization v0.1.11
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.1.0
[INFO] [stderr]     Checking ws v0.9.1
[INFO] [stderr]     Checking websocketshutdown v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `listen`
[INFO] [stdout]  --> src/main.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ws::{listen, connect, Sender, Handler, Message, Handshake};
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/main.rs:40:15
[INFO] [stdout]    |
[INFO] [stdout] 40 |         move |msg| {
[INFO] [stdout]    |               ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/main.rs:16:30
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn on_message(&mut self, msg: Message) -> Result<(), ws::Error> {
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `listen`
[INFO] [stdout]  --> src/main.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ws::{listen, connect, Sender, Handler, Message, Handshake};
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/main.rs:40:15
[INFO] [stdout]    |
[INFO] [stdout] 40 |         move |msg| {
[INFO] [stdout]    |               ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/main.rs:16:30
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn on_message(&mut self, msg: Message) -> Result<(), ws::Error> {
[INFO] [stdout]    |                              ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |             c.send(""); // Send something back
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |             c.send(""); // Send something back
[INFO] [stdout]    |             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.74s
[INFO] running `Command { std: "docker" "inspect" "70845fc7d738a5d2aaa72e723b30d4e1434016af82f8b73e88a1d510c9cb3229", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70845fc7d738a5d2aaa72e723b30d4e1434016af82f8b73e88a1d510c9cb3229", kill_on_drop: false }`
[INFO] [stdout] 70845fc7d738a5d2aaa72e723b30d4e1434016af82f8b73e88a1d510c9cb3229