[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] testing gugahoa/simple-ws-rs against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgugahoa%2Fsimple-ws-rs" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gugahoa/simple-ws-rs on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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-0/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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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]  Downloading crates ...
[INFO] [stderr]   Downloaded http-muncher v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a92209d921d2f4a02c1b1af44ed41ba5e7076d91b3ce974a977737433bd04d2
[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" "3a92209d921d2f4a02c1b1af44ed41ba5e7076d91b3ce974a977737433bd04d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a92209d921d2f4a02c1b1af44ed41ba5e7076d91b3ce974a977737433bd04d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a92209d921d2f4a02c1b1af44ed41ba5e7076d91b3ce974a977737433bd04d2", kill_on_drop: false }`
[INFO] [stdout] 3a92209d921d2f4a02c1b1af44ed41ba5e7076d91b3ce974a977737433bd04d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77b7fedccccc04e5d13d23d0b4b3f4d89814156ad8891a84cfd5bcf27eab0d3b
[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" "77b7fedccccc04e5d13d23d0b4b3f4d89814156ad8891a84cfd5bcf27eab0d3b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lazycell v0.6.0
[INFO] [stderr]    Compiling slab v0.4.0
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling http-muncher v0.3.1
[INFO] [stderr]    Compiling base64 v0.9.0
[INFO] [stderr]    Compiling mio v0.6.14 (https://github.com/carllerche/mio#c419ed6e)
[INFO] [stderr]    Compiling 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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.09s
[INFO] running `Command { std: "docker" "inspect" "77b7fedccccc04e5d13d23d0b4b3f4d89814156ad8891a84cfd5bcf27eab0d3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77b7fedccccc04e5d13d23d0b4b3f4d89814156ad8891a84cfd5bcf27eab0d3b", kill_on_drop: false }`
[INFO] [stdout] 77b7fedccccc04e5d13d23d0b4b3f4d89814156ad8891a84cfd5bcf27eab0d3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a2c1fdf7067991f2f6d6093386a927386f008c9b1936b3e0b6013ae3f8f1a3e
[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" "7a2c1fdf7067991f2f6d6093386a927386f008c9b1936b3e0b6013ae3f8f1a3e", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "7a2c1fdf7067991f2f6d6093386a927386f008c9b1936b3e0b6013ae3f8f1a3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a2c1fdf7067991f2f6d6093386a927386f008c9b1936b3e0b6013ae3f8f1a3e", kill_on_drop: false }`
[INFO] [stdout] 7a2c1fdf7067991f2f6d6093386a927386f008c9b1936b3e0b6013ae3f8f1a3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b30f80ee85f8e21ef68784b40f2c87a586bbe805603c0d89ad12e45096f9548e
[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" "b30f80ee85f8e21ef68784b40f2c87a586bbe805603c0d89ad12e45096f9548e", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:299:29
[INFO] [stderr]     |
[INFO] [stderr] 299 |                         let mut client = websocket.clients.get_mut(&client_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: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:307:21
[INFO] [stderr]     |
[INFO] [stderr] 307 |                 let mut client = websocket.clients.get_mut(&token).unwrap();
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `chat` (bin "chat" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ws-b73951b9d9f53b6b)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/chat-e7ef23516ac54eb2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests ws
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b30f80ee85f8e21ef68784b40f2c87a586bbe805603c0d89ad12e45096f9548e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b30f80ee85f8e21ef68784b40f2c87a586bbe805603c0d89ad12e45096f9548e", kill_on_drop: false }`
[INFO] [stdout] b30f80ee85f8e21ef68784b40f2c87a586bbe805603c0d89ad12e45096f9548e