[INFO] fetching crate jamsocket-wasm-host 0.1.0...
[INFO] checking jamsocket-wasm-host-0.1.0 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate jamsocket-wasm-host 0.1.0 into /workspace/builds/worker-29/source
[INFO] validating manifest of crates.io crate jamsocket-wasm-host 0.1.0 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jamsocket-wasm-host 0.1.0
[INFO] finished tweaking crates.io crate jamsocket-wasm-host 0.1.0
[INFO] tweaked toml for crates.io crate jamsocket-wasm-host 0.1.0 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6690607379dbc3048460b173fe5bee5cd81a79139361ce053033403076309fa
[INFO] running `Command { std: "docker" "start" "-a" "d6690607379dbc3048460b173fe5bee5cd81a79139361ce053033403076309fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6690607379dbc3048460b173fe5bee5cd81a79139361ce053033403076309fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6690607379dbc3048460b173fe5bee5cd81a79139361ce053033403076309fa", kill_on_drop: false }`
[INFO] [stdout] d6690607379dbc3048460b173fe5bee5cd81a79139361ce053033403076309fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5dab3544a9cca60ab68e5cce2c39eb5f6ab55dc858e17de9fc3e1b20faf28e88
[INFO] running `Command { std: "docker" "start" "-a" "5dab3544a9cca60ab68e5cce2c39eb5f6ab55dc858e17de9fc3e1b20faf28e88", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.76
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[INFO] [stderr]     Checking jamsocket-wasm-host v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0053]: method `build` has an incompatible type for trait
[INFO] [stdout]   --> src/wasm_host_factory.rs:20:51
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn build(&self, room_id: &str, context: T) -> Self::Service {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^
[INFO] [stdout]    |                                                   |
[INFO] [stdout]    |                                                   expected enum `Option`, found struct `WasmHost`
[INFO] [stdout]    |                                                   help: change the output type to match the trait: `Option<WasmHost>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&WasmHostFactory, &str, _) -> Option<WasmHost>`
[INFO] [stdout]               found fn pointer `fn(&WasmHostFactory, &str, _) -> WasmHost`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0053]: method `build` has an incompatible type for trait
[INFO] [stdout]   --> src/wasm_host_factory.rs:20:51
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn build(&self, room_id: &str, context: T) -> Self::Service {
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^^
[INFO] [stdout]    |                                                   |
[INFO] [stdout]    |                                                   expected enum `Option`, found struct `WasmHost`
[INFO] [stdout]    |                                                   help: change the output type to match the trait: `Option<WasmHost>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `fn(&WasmHostFactory, &str, _) -> Option<WasmHost>`
[INFO] [stdout]               found fn pointer `fn(&WasmHostFactory, &str, _) -> WasmHost`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0053`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jamsocket-wasm-host` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5dab3544a9cca60ab68e5cce2c39eb5f6ab55dc858e17de9fc3e1b20faf28e88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dab3544a9cca60ab68e5cce2c39eb5f6ab55dc858e17de9fc3e1b20faf28e88", kill_on_drop: false }`
[INFO] [stdout] 5dab3544a9cca60ab68e5cce2c39eb5f6ab55dc858e17de9fc3e1b20faf28e88