[INFO] cloning repository https://github.com/bsg/ws-chat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bsg/ws-chat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbsg%2Fws-chat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbsg%2Fws-chat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 04f097d41aac2f8b299d1905928f7a444d0e2885
[INFO] checking bsg/ws-chat against try#59a256151e578f525a26127f2c3e3a6c7e2982ca for pr-149291-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbsg%2Fws-chat" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bsg/ws-chat
[INFO] finished tweaking git repo https://github.com/bsg/ws-chat
[INFO] tweaked toml for git repo https://github.com/bsg/ws-chat written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bsg/ws-chat on toolchain 59a256151e578f525a26127f2c3e3a6c7e2982ca
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bsg/ws-chat already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded warp v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3fbe5c114d7ece81b65fc1e37e13af37d5b163a8a0e68d15198b0ffb5f0d482
[INFO] running `Command { std: "docker" "start" "-a" "d3fbe5c114d7ece81b65fc1e37e13af37d5b163a8a0e68d15198b0ffb5f0d482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3fbe5c114d7ece81b65fc1e37e13af37d5b163a8a0e68d15198b0ffb5f0d482", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3fbe5c114d7ece81b65fc1e37e13af37d5b163a8a0e68d15198b0ffb5f0d482", kill_on_drop: false }`
[INFO] [stdout] d3fbe5c114d7ece81b65fc1e37e13af37d5b163a8a0e68d15198b0ffb5f0d482
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79a15fe95c8dd1d81e5cbe3d96b16fa483f9018f9d34ba0f4b314ea693b3cbe0
[INFO] running `Command { std: "docker" "start" "-a" "79a15fe95c8dd1d81e5cbe3d96b16fa483f9018f9d34ba0f4b314ea693b3cbe0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.31
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]    Compiling unicase v2.7.0
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling multer v2.1.0
[INFO] [stderr]     Checking want v0.3.1
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking headers-core v0.2.0
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking rustls-pemfile v1.0.3
[INFO] [stderr]     Checking filetime v0.2.22
[INFO] [stderr]     Checking walkdir v2.4.0
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking headers v0.3.9
[INFO] [stderr]     Checking inotify v0.9.6
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking notify v6.1.1
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.48
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling pin-project-internal v1.1.3
[INFO] [stderr]     Checking tokio v1.32.0
[INFO] [stderr]     Checking pin-project v1.1.3
[INFO] [stderr]     Checking thiserror v1.0.48
[INFO] [stderr]     Checking tungstenite v0.18.0
[INFO] [stderr]     Checking serde v1.0.188
[INFO] [stderr]     Checking tokio-util v0.7.8
[INFO] [stderr]     Checking tokio-tungstenite v0.18.0
[INFO] [stderr]     Checking tokio-stream v0.1.14
[INFO] [stderr]     Checking h2 v0.3.21
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_json v1.0.105
[INFO] [stderr]     Checking hyper v0.14.27
[INFO] [stderr]     Checking warp v0.3.5
[INFO] [stderr]     Checking ws-chat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:98:17
[INFO] [stdout]    |
[INFO] [stdout] 98 |             Err(e) => {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/main.rs:98:17
[INFO] [stdout]    |
[INFO] [stdout] 98 |             Err(e) => {
[INFO] [stdout]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:115:17
[INFO] [stdout]     |
[INFO] [stdout] 115 | /                 sender.send(Ok(Message::text(
[INFO] [stdout] 116 | |                     serde_json::to_string(&ChatMessage {
[INFO] [stdout] 117 | |                         username: "".to_string(),
[INFO] [stdout] 118 | |                         body: msg.to_str().unwrap().to_string(),
[INFO] [stdout] 119 | |                     })
[INFO] [stdout] 120 | |                     .unwrap(),
[INFO] [stdout] 121 | |                 )));
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 let _ = sender.send(Ok(Message::text(
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:115:17
[INFO] [stdout]     |
[INFO] [stdout] 115 | /                 sender.send(Ok(Message::text(
[INFO] [stdout] 116 | |                     serde_json::to_string(&ChatMessage {
[INFO] [stdout] 117 | |                         username: "".to_string(),
[INFO] [stdout] 118 | |                         body: msg.to_str().unwrap().to_string(),
[INFO] [stdout] 119 | |                     })
[INFO] [stdout] 120 | |                     .unwrap(),
[INFO] [stdout] 121 | |                 )));
[INFO] [stdout]     | |___________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 115 |                 let _ = sender.send(Ok(Message::text(
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.21s
[INFO] running `Command { std: "docker" "inspect" "79a15fe95c8dd1d81e5cbe3d96b16fa483f9018f9d34ba0f4b314ea693b3cbe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79a15fe95c8dd1d81e5cbe3d96b16fa483f9018f9d34ba0f4b314ea693b3cbe0", kill_on_drop: false }`
[INFO] [stdout] 79a15fe95c8dd1d81e5cbe3d96b16fa483f9018f9d34ba0f4b314ea693b3cbe0