[INFO] cloning repository https://github.com/TechieQuokka/echo-client-v1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TechieQuokka/echo-client-v1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechieQuokka%2Fecho-client-v1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechieQuokka%2Fecho-client-v1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d50bfb6b643a059eda4428792b19e5f99605318f
[INFO] checking TechieQuokka/echo-client-v1 against 52995a223f2919dd3e2e427231db90a257350ded for pr-129249-4
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTechieQuokka%2Fecho-client-v1" "/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/TechieQuokka/echo-client-v1
[INFO] finished tweaking git repo https://github.com/TechieQuokka/echo-client-v1
[INFO] tweaked toml for git repo https://github.com/TechieQuokka/echo-client-v1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/TechieQuokka/echo-client-v1 on toolchain 52995a223f2919dd3e2e427231db90a257350ded
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/TechieQuokka/echo-client-v1 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" "+52995a223f2919dd3e2e427231db90a257350ded" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 2bfeff6e4677e8ae07ab2699d56e3efeb86edc1b54c50642256516ca40ba2b27
[INFO] running `Command { std: "docker" "start" "2bfeff6e4677e8ae07ab2699d56e3efeb86edc1b54c50642256516ca40ba2b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bfeff6e4677e8ae07ab2699d56e3efeb86edc1b54c50642256516ca40ba2b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2bfeff6e4677e8ae07ab2699d56e3efeb86edc1b54c50642256516ca40ba2b27" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bfeff6e4677e8ae07ab2699d56e3efeb86edc1b54c50642256516ca40ba2b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2bfeff6e4677e8ae07ab2699d56e3efeb86edc1b54c50642256516ca40ba2b27" "/opt/rustwide/cargo-home/bin/cargo" "+52995a223f2919dd3e2e427231db90a257350ded" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
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[INFO] [stderr]     Checking tokio-native-tls v0.3.1
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[INFO] [stderr]     Checking echo-client-v1 v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]   --> src/ws.rs:31:56
[INFO] [stdout]    |
[INFO] [stdout] 31 | ...                   if sink.send(Message::Text(json.into())).await.is_err() {
[INFO] [stdout]    |                                                  ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 31 -                             if sink.send(Message::Text(json.into())).await.is_err() {
[INFO] [stdout] 31 +                             if sink.send(Message::Text(json)).await.is_err() {
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 31 -                             if sink.send(Message::Text(json.into())).await.is_err() {
[INFO] [stdout] 31 +                             if sink.send(Message::Text(<std::string::String as Into<_>>::into(json))).await.is_err() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `echo-client-v1` (bin "echo-client" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]   --> src/ws.rs:31:56
[INFO] [stdout]    |
[INFO] [stdout] 31 | ...                   if sink.send(Message::Text(json.into())).await.is_err() {
[INFO] [stdout]    |                                                  ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]    |
[INFO] [stdout] 31 -                             if sink.send(Message::Text(json.into())).await.is_err() {
[INFO] [stdout] 31 +                             if sink.send(Message::Text(json)).await.is_err() {
[INFO] [stdout]    |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 31 -                             if sink.send(Message::Text(json.into())).await.is_err() {
[INFO] [stdout] 31 +                             if sink.send(Message::Text(<std::string::String as Into<_>>::into(json))).await.is_err() {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `echo-client-v1` (bin "echo-client") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "2bfeff6e4677e8ae07ab2699d56e3efeb86edc1b54c50642256516ca40ba2b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bfeff6e4677e8ae07ab2699d56e3efeb86edc1b54c50642256516ca40ba2b27", kill_on_drop: false }`
[INFO] [stdout] 2bfeff6e4677e8ae07ab2699d56e3efeb86edc1b54c50642256516ca40ba2b27