[INFO] cloning repository https://github.com/gugahoa/simple-ws-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gugahoa/simple-ws-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgugahoa%2Fsimple-ws-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgugahoa%2Fsimple-ws-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ce41193348ac4ab9a07526e2e77a54b262ac7582
[INFO] checking gugahoa/simple-ws-rs against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgugahoa%2Fsimple-ws-rs" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gugahoa/simple-ws-rs on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gugahoa/simple-ws-rs
[INFO] finished tweaking git repo https://github.com/gugahoa/simple-ws-rs
[INFO] tweaked toml for git repo https://github.com/gugahoa/simple-ws-rs written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/gugahoa/simple-ws-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/carllerche/mio`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0312dc1d89d7bfc94fa8a08705ca9c5c42329de10aff3806555a6501ab7b8f1f
[INFO] running `Command { std: "docker" "start" "-a" "0312dc1d89d7bfc94fa8a08705ca9c5c42329de10aff3806555a6501ab7b8f1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0312dc1d89d7bfc94fa8a08705ca9c5c42329de10aff3806555a6501ab7b8f1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0312dc1d89d7bfc94fa8a08705ca9c5c42329de10aff3806555a6501ab7b8f1f", kill_on_drop: false }`
[INFO] [stdout] 0312dc1d89d7bfc94fa8a08705ca9c5c42329de10aff3806555a6501ab7b8f1f
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 375de34b4f705314238238785eaaf97746632fa9dbaad83f3333a65711c58a90
[INFO] running `Command { std: "docker" "start" "-a" "375de34b4f705314238238785eaaf97746632fa9dbaad83f3333a65711c58a90", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]     Checking cfg-if v0.1.2
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking byteorder v1.2.2
[INFO] [stderr]     Checking slab v0.4.0
[INFO] [stderr]     Checking safemem v0.2.0
[INFO] [stderr]     Checking lazycell v0.6.0
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking base64 v0.9.0
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking net2 v0.2.32
[INFO] [stderr]    Compiling http-muncher v0.3.1
[INFO] [stderr]     Checking mio v0.6.14 (https://github.com/carllerche/mio#c419ed6e)
[INFO] [stderr]     Checking chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:299:29
[INFO] [stdout]     |
[INFO] [stdout] 299 |                         let mut client = websocket.clients.get_mut(&client_token).unwrap();
[INFO] [stdout]     |                             ----^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:307:21
[INFO] [stdout]     |
[INFO] [stdout] 307 |                 let mut client = websocket.clients.get_mut(&token).unwrap();
[INFO] [stdout]     |                     ----^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:299:29
[INFO] [stdout]     |
[INFO] [stdout] 299 |                         let mut client = websocket.clients.get_mut(&client_token).unwrap();
[INFO] [stdout]     |                             ----^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:307:21
[INFO] [stdout]     |
[INFO] [stdout] 307 |                 let mut client = websocket.clients.get_mut(&token).unwrap();
[INFO] [stdout]     |                     ----^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.88s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "375de34b4f705314238238785eaaf97746632fa9dbaad83f3333a65711c58a90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "375de34b4f705314238238785eaaf97746632fa9dbaad83f3333a65711c58a90", kill_on_drop: false }`
[INFO] [stdout] 375de34b4f705314238238785eaaf97746632fa9dbaad83f3333a65711c58a90