[INFO] fetching crate medea-jason 0.4.0...
[INFO] checking medea-jason-0.4.0 against master#b92758a9aef1cef7b79e2b72c3d8ba113e547f89 for pr-124305-1
[INFO] extracting crate medea-jason 0.4.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate medea-jason 0.4.0 on toolchain b92758a9aef1cef7b79e2b72c3d8ba113e547f89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b92758a9aef1cef7b79e2b72c3d8ba113e547f89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate medea-jason 0.4.0
[INFO] finished tweaking crates.io crate medea-jason 0.4.0
[INFO] tweaked toml for crates.io crate medea-jason 0.4.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b92758a9aef1cef7b79e2b72c3d8ba113e547f89" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 173 packages to latest compatible versions
[INFO] [stderr]       Adding atomic v0.5.3 (latest: v0.6.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (latest: v1.0.0)
[INFO] [stderr]       Adding convert_case v0.4.0 (latest: v0.6.0)
[INFO] [stderr]       Adding env_logger v0.10.2 (latest: v0.11.3)
[INFO] [stderr]       Adding flutter_rust_bridge v1.77.1 (latest: v1.82.6)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.5)
[INFO] [stderr]       Adding heck v0.3.3 (latest: v0.5.0)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding itertools v0.10.5 (latest: v0.13.0)
[INFO] [stderr]       Adding mockall v0.11.4 (latest: v0.12.1)
[INFO] [stderr]       Adding mockall_derive v0.11.4 (latest: v0.12.1)
[INFO] [stderr]       Adding predicates v2.1.5 (latest: v3.1.0)
[INFO] [stderr]       Adding sealed v0.3.0 (latest: v0.5.0)
[INFO] [stderr]       Adding simple_logger v4.3.3 (latest: v5.0.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.65)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.1+wasi-0.2.0)
[INFO] [stderr]       Adding windows-core v0.52.0 (latest: v0.56.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.5)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b92758a9aef1cef7b79e2b72c3d8ba113e547f89" "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 wee_alloc v0.4.5
[INFO] [stderr]   Downloaded wasm-bindgen-test v0.3.42
[INFO] [stderr]   Downloaded scoped-tls v1.0.1
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[INFO] [stderr]   Downloaded medea-client-api-proto v0.5.0
[INFO] [stderr]   Downloaded medea-reactive v0.1.2
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[INFO] [stderr]   Downloaded sealed v0.3.0
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[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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b92758a9aef1cef7b79e2b72c3d8ba113e547f89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 904d2427bf4ab70d7e1d502f1b8876c00787f1f82b645537e4ba7da18b3aa1f9
[INFO] running `Command { std: "docker" "start" "-a" "904d2427bf4ab70d7e1d502f1b8876c00787f1f82b645537e4ba7da18b3aa1f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "904d2427bf4ab70d7e1d502f1b8876c00787f1f82b645537e4ba7da18b3aa1f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "904d2427bf4ab70d7e1d502f1b8876c00787f1f82b645537e4ba7da18b3aa1f9", kill_on_drop: false }`
[INFO] [stdout] 904d2427bf4ab70d7e1d502f1b8876c00787f1f82b645537e4ba7da18b3aa1f9
[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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b92758a9aef1cef7b79e2b72c3d8ba113e547f89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75bb56fa8f984d5eef0df8cd53c23157c0495ab40bcfaaa2b9ca4b1aa6f14de5
[INFO] running `Command { std: "docker" "start" "-a" "75bb56fa8f984d5eef0df8cd53c23157c0495ab40bcfaaa2b9ca4b1aa6f14de5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.83
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling autocfg v1.3.0
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[INFO] [stderr]    Compiling cc v1.0.98
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling memchr v2.7.2
[INFO] [stderr]    Compiling serde v1.0.202
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking futures-task v0.3.30
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]    Compiling anyhow v1.0.86
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]     Checking powerfmt v0.2.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]    Compiling build-target v0.4.0
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling time-core v0.1.2
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]    Compiling num-conv v0.1.0
[INFO] [stderr]     Checking deranged v0.3.11
[INFO] [stderr]    Compiling time-macros v0.2.18
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking percent-encoding v2.3.1
[INFO] [stderr]    Compiling serde_json v1.0.117
[INFO] [stderr]     Checking log v0.4.21
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]     Checking num_threads v0.1.7
[INFO] [stderr]     Checking atomic v0.5.3
[INFO] [stderr]     Checking form_urlencoded v1.2.1
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[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking unicode-normalization v0.1.23
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[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking bytemuck v1.16.0
[INFO] [stderr]     Checking bitflags v2.5.0
[INFO] [stderr]     Checking allo-isolate v0.1.24
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling syn v2.0.65
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking parking_lot v0.12.2
[INFO] [stderr]    Compiling dart-sys v4.1.5
[INFO] [stderr]    Compiling flutter_rust_bridge v1.77.1
[INFO] [stderr]    Compiling medea-jason v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]     Checking time v0.3.36
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking backoff v0.4.0
[INFO] [stderr]     Checking simple_logger v4.3.3
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling darling_core v0.20.9
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling sealed v0.3.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling serde_derive v1.0.202
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling medea-macro v0.3.0
[INFO] [stderr]    Compiling async-trait v0.1.80
[INFO] [stderr]    Compiling async-recursion v1.1.1
[INFO] [stderr]    Compiling sealed v0.5.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling darling_macro v0.20.9
[INFO] [stderr]     Checking tracerr v0.3.0
[INFO] [stderr]    Compiling darling v0.20.9
[INFO] [stderr]    Compiling serde_with_macros v3.8.1
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking medea-reactive v0.1.2
[INFO] [stderr]     Checking serde_with v3.8.1
[INFO] [stderr]     Checking medea-client-api-proto v0.5.0
[INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code`
[INFO] [stdout]    --> src/lib.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 |     unused_tuple_struct_fields,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dead_code`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code`
[INFO] [stdout]    --> src/platform/dart/utils/dart_future.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |     #[allow(unused_tuple_struct_fields)] Dart_Handle, // read by Dart side
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dead_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code`
[INFO] [stdout]    --> src/lib.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 |     unused_tuple_struct_fields,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dead_code`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `unused_tuple_struct_fields` has been renamed to `dead_code`
[INFO] [stdout]    --> src/platform/dart/utils/dart_future.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |     #[allow(unused_tuple_struct_fields)] Dart_Handle, // read by Dart side
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `dead_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::result::Result::<T, E>::map_or` that must be used
[INFO] [stdout]   --> src/rpc/heartbeat.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 | /         self.transport
[INFO] [stdout] 69 | |             .send(&ClientMsg::Pong(n))
[INFO] [stdout] 70 | |             .map_err(tracerr::wrap!(=> platform::TransportError))
[INFO] [stdout] 71 | |             .map_err(|e| log::error!("Failed to send pong: {e}"))
[INFO] [stdout] 72 | |             .map_or((), drop);
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the returned value, use `if let` instead
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let _ = self.transport
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::result::Result::<T, E>::map_or` that must be used
[INFO] [stdout]   --> src/rpc/heartbeat.rs:68:9
[INFO] [stdout]    |
[INFO] [stdout] 68 | /         self.transport
[INFO] [stdout] 69 | |             .send(&ClientMsg::Pong(n))
[INFO] [stdout] 70 | |             .map_err(tracerr::wrap!(=> platform::TransportError))
[INFO] [stdout] 71 | |             .map_err(|e| log::error!("Failed to send pong: {e}"))
[INFO] [stdout] 72 | |             .map_or((), drop);
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the returned value, use `if let` instead
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |         let _ = self.transport
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 37.69s
[INFO] running `Command { std: "docker" "inspect" "75bb56fa8f984d5eef0df8cd53c23157c0495ab40bcfaaa2b9ca4b1aa6f14de5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75bb56fa8f984d5eef0df8cd53c23157c0495ab40bcfaaa2b9ca4b1aa6f14de5", kill_on_drop: false }`
[INFO] [stdout] 75bb56fa8f984d5eef0df8cd53c23157c0495ab40bcfaaa2b9ca4b1aa6f14de5