[INFO] cloning repository https://github.com/landakram/socketio-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/landakram/socketio-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flandakram%2Fsocketio-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flandakram%2Fsocketio-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ec297b4811a0f32d928862cd314e0ce51af0ed4
[INFO] checking landakram/socketio-rs against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flandakram%2Fsocketio-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/landakram/socketio-rs on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/landakram/socketio-rs
[INFO] finished tweaking git repo https://github.com/landakram/socketio-rs
[INFO] tweaked toml for git repo https://github.com/landakram/socketio-rs written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/landakram/socketio-rs 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded urlencoding v1.0.0
[INFO] [stderr]   Downloaded proc-macro-nested v0.1.4
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[INFO] [stderr]   Downloaded serde_json v1.0.53
[INFO] [stderr]   Downloaded serde_derive v1.0.110
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[INFO] [stderr]   Downloaded warp v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a98d64809b31bbe67c0566e807f8994a7d8e72c1ae9feb588dbf19dde63b72ac
[INFO] running `Command { std: "docker" "start" "-a" "a98d64809b31bbe67c0566e807f8994a7d8e72c1ae9feb588dbf19dde63b72ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a98d64809b31bbe67c0566e807f8994a7d8e72c1ae9feb588dbf19dde63b72ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a98d64809b31bbe67c0566e807f8994a7d8e72c1ae9feb588dbf19dde63b72ac", kill_on_drop: false }`
[INFO] [stdout] a98d64809b31bbe67c0566e807f8994a7d8e72c1ae9feb588dbf19dde63b72ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d90287b0ce155263f7d8b095a81b7343f358daf1099593a331a63af49d5ab7df
[INFO] running `Command { std: "docker" "start" "-a" "d90287b0ce155263f7d8b095a81b7343f358daf1099593a331a63af49d5ab7df", kill_on_drop: false }`
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[INFO] [stderr]    Compiling rand_core v0.4.2
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[INFO] [stderr]     Checking byte-tools v0.3.1
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]     Checking fake-simd v0.1.2
[INFO] [stderr]     Checking block-padding v0.1.5
[INFO] [stderr]     Checking opaque-debug v0.2.3
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]    Compiling rand_core v0.3.1
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[INFO] [stderr]     Checking rand_core v0.5.1
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[INFO] [stderr]    Compiling serde_derive v1.0.110
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[INFO] [stderr]     Checking tungstenite v0.10.1
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[INFO] [stderr]     Checking multipart v0.16.1
[INFO] [stderr]     Checking env_logger v0.7.1
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[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
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[INFO] [stderr]     Checking socket-io-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/main.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     args: HandshakeArgs,
[INFO] [stdout]    |     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/main.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 71 |     args: HandshakeArgs,
[INFO] [stdout]    |     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/main.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 211 |     args: UpgradeArgs,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `socket_store`
[INFO] [stdout]    --> src/main.rs:212:5
[INFO] [stdout]     |
[INFO] [stdout] 212 |     socket_store: Arc<impl crate::store::SocketStore>,
[INFO] [stdout]     |     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_socket_store`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/main.rs:211:5
[INFO] [stdout]     |
[INFO] [stdout] 211 |     args: UpgradeArgs,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `socket_store`
[INFO] [stdout]    --> src/main.rs:212:5
[INFO] [stdout]     |
[INFO] [stdout] 212 |     socket_store: Arc<impl crate::store::SocketStore>,
[INFO] [stdout]     |     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_socket_store`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/main.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn on_data(args: SessionArgs, socket_store: Arc<impl crate::store::SocketStore>) -> String {
[INFO] [stdout]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `socket_store`
[INFO] [stdout]    --> src/main.rs:114:31
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn on_data(args: SessionArgs, socket_store: Arc<impl crate::store::SocketStore>) -> String {
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_socket_store`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]    --> src/main.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn on_data(args: SessionArgs, socket_store: Arc<impl crate::store::SocketStore>) -> String {
[INFO] [stdout]     |            ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `socket_store`
[INFO] [stdout]    --> src/main.rs:114:31
[INFO] [stdout]     |
[INFO] [stdout] 114 | fn on_data(args: SessionArgs, socket_store: Arc<impl crate::store::SocketStore>) -> String {
[INFO] [stdout]     |                               ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_socket_store`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `transport` is never read
[INFO] [stdout]    --> src/main.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub struct Socket {
[INFO] [stdout]     |                ------ field in this struct
[INFO] [stdout] 158 |         pub sid: String,
[INFO] [stdout] 159 |         transport: crate::transport::Transport,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Socket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `transport` is never read
[INFO] [stdout]    --> src/main.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |     pub struct Socket {
[INFO] [stdout]     |                ------ field in this struct
[INFO] [stdout] 158 |         pub sid: String,
[INFO] [stdout] 159 |         transport: crate::transport::Transport,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Socket` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.32s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: buf_redux v0.8.4, multipart v0.16.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 6`
[INFO] running `Command { std: "docker" "inspect" "d90287b0ce155263f7d8b095a81b7343f358daf1099593a331a63af49d5ab7df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d90287b0ce155263f7d8b095a81b7343f358daf1099593a331a63af49d5ab7df", kill_on_drop: false }`
[INFO] [stdout] d90287b0ce155263f7d8b095a81b7343f358daf1099593a331a63af49d5ab7df