[INFO] fetching crate websocket-async-io 1.0.0...
[INFO] checking websocket-async-io-1.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate websocket-async-io 1.0.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate websocket-async-io 1.0.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] started tweaking crates.io crate websocket-async-io 1.0.0
[INFO] finished tweaking crates.io crate websocket-async-io 1.0.0
[INFO] tweaked toml for crates.io crate websocket-async-io 1.0.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate websocket-async-io 1.0.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded slab v0.4.4
[INFO] [stderr]   Downloaded bumpalo v3.7.1
[INFO] [stderr]   Downloaded console_error_panic_hook v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f793ca2d4e8298e5d9ba52e73a4fbeb789503a18a7b4030a417850802a0602a
[INFO] running `Command { std: "docker" "start" "-a" "6f793ca2d4e8298e5d9ba52e73a4fbeb789503a18a7b4030a417850802a0602a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f793ca2d4e8298e5d9ba52e73a4fbeb789503a18a7b4030a417850802a0602a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f793ca2d4e8298e5d9ba52e73a4fbeb789503a18a7b4030a417850802a0602a", kill_on_drop: false }`
[INFO] [stdout] 6f793ca2d4e8298e5d9ba52e73a4fbeb789503a18a7b4030a417850802a0602a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4335128fc5d3bbb2f52fe9c3a2cf3a761872f11a4d095772519f44f6811ea7f7
[INFO] running `Command { std: "docker" "start" "-a" "4335128fc5d3bbb2f52fe9c3a2cf3a761872f11a4d095772519f44f6811ea7f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.78
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling bumpalo v3.7.1
[INFO] [stderr]    Compiling wasm-bindgen v0.2.78
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]     Checking slab v0.4.4
[INFO] [stderr]     Checking futures-channel v0.3.17
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.78
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.78
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.78
[INFO] [stderr]     Checking js-sys v0.3.55
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]     Checking web-sys v0.3.55
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.28
[INFO] [stderr]     Checking websocket-async-io v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.28s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: wasm-bindgen v0.2.78
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "4335128fc5d3bbb2f52fe9c3a2cf3a761872f11a4d095772519f44f6811ea7f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4335128fc5d3bbb2f52fe9c3a2cf3a761872f11a4d095772519f44f6811ea7f7", kill_on_drop: false }`
[INFO] [stdout] 4335128fc5d3bbb2f52fe9c3a2cf3a761872f11a4d095772519f44f6811ea7f7