[INFO] fetching crate wasm-reader 0.2.0... [INFO] testing wasm-reader-0.2.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1 [INFO] extracting crate wasm-reader 0.2.0 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate wasm-reader 0.2.0 [INFO] finished tweaking crates.io crate wasm-reader 0.2.0 [INFO] tweaked toml for crates.io crate wasm-reader 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate wasm-reader 0.2.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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] Locking 61 packages to latest compatible versions [INFO] [stderr] Adding auto_enums v0.7.12 (available: v0.8.7) [INFO] [stderr] Adding derive_more v0.99.20 (available: v2.0.1) [INFO] [stderr] Adding quickcheck v0.9.2 (available: v1.0.3) [INFO] [stderr] Adding quickcheck_macros v0.9.1 (available: v1.1.0) [INFO] [stderr] Adding wasmparser v0.51.4 (available: v0.238.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 99c3ea5cb389f36dddfdd8b4969363e03cfeabe11600bac2937ae8550f27759a [INFO] running `Command { std: "docker" "start" "-a" "99c3ea5cb389f36dddfdd8b4969363e03cfeabe11600bac2937ae8550f27759a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "99c3ea5cb389f36dddfdd8b4969363e03cfeabe11600bac2937ae8550f27759a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "99c3ea5cb389f36dddfdd8b4969363e03cfeabe11600bac2937ae8550f27759a", kill_on_drop: false }` [INFO] [stdout] 99c3ea5cb389f36dddfdd8b4969363e03cfeabe11600bac2937ae8550f27759a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c86f37a83fdcef5c8ba6d3c07ffb54e59de6e8cae639df17d9d4c3485430123e [INFO] running `Command { std: "docker" "start" "-a" "c86f37a83fdcef5c8ba6d3c07ffb54e59de6e8cae639df17d9d4c3485430123e", kill_on_drop: false }` [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling syn v2.0.106 [INFO] [stderr] Compiling frunk_core v0.3.2 [INFO] [stderr] Compiling convert_case v0.4.0 [INFO] [stderr] Compiling wasmparser v0.51.4 [INFO] [stderr] Compiling auto_enums_derive v0.7.12 [INFO] [stderr] Compiling backtrace v0.3.75 [INFO] [stderr] Compiling wasm-reader-traits v0.1.1 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Compiling derive_utils v0.11.2 [INFO] [stderr] Compiling derive_utils v0.9.1 [INFO] [stderr] Compiling derive_more v0.99.20 [INFO] [stderr] Compiling auto_enums_core v0.7.12 [INFO] [stderr] Compiling derive-parse v0.1.0 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling failure v0.1.8 [INFO] [stderr] Compiling auto_enums v0.7.12 [INFO] [stderr] Compiling wasm-reader v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable [INFO] [stdout] --> src/operations.rs:83:19 [INFO] [stdout] | [INFO] [stdout] 83 | type Parser = impl Parser; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #63063 for more information [INFO] [stdout] = help: add `#![feature(impl_trait_in_assoc_type)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-28; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable [INFO] [stdout] --> src/operations.rs:98:19 [INFO] [stdout] | [INFO] [stdout] 98 | type Parser = impl Parser; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #63063 for more information [INFO] [stdout] = help: add `#![feature(impl_trait_in_assoc_type)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-28; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable [INFO] [stdout] --> src/operations.rs:106:19 [INFO] [stdout] | [INFO] [stdout] 106 | type Parser = impl Parser; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #63063 for more information [INFO] [stdout] = help: add `#![feature(impl_trait_in_assoc_type)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-28; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable [INFO] [stdout] --> src/parse.rs:29:19 [INFO] [stdout] | [INFO] [stdout] 29 | type Parser = impl Parser [INFO] [stdout] | ___________________^ [INFO] [stdout] 30 | | + wasm_reader_traits::CollectHelper [INFO] [stdout] 31 | | + Clone; [INFO] [stdout] | |_______________^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #63063 for more information [INFO] [stdout] = help: add `#![feature(impl_trait_in_assoc_type)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-28; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable [INFO] [stdout] --> src/parse.rs:63:19 [INFO] [stdout] | [INFO] [stdout] 63 | type Parser = impl Parser [INFO] [stdout] | ___________________^ [INFO] [stdout] 64 | | + wasm_reader_traits::CollectHelper [INFO] [stdout] 65 | | + Clone; [INFO] [stdout] | |_______________^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #63063 for more information [INFO] [stdout] = help: add `#![feature(impl_trait_in_assoc_type)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-28; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: `impl Trait` in associated types is unstable [INFO] [stdout] --> src/parse.rs:85:19 [INFO] [stdout] | [INFO] [stdout] 85 | type Parser = impl Parser; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #63063 for more information [INFO] [stdout] = help: add `#![feature(impl_trait_in_assoc_type)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-08-28; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:1:47 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(never_type, type_alias_impl_trait, specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: unconstrained opaque type [INFO] [stdout] --> src/operations.rs:430:25 [INFO] [stdout] | [INFO] [stdout] 430 | pub type OpParser = impl crate::Parser + Clone; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `OpParser` must be used in combination with a concrete type within the same crate [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0308]: mismatched types [INFO] [stdout] --> src/operations.rs:868:9 [INFO] [stdout] | [INFO] [stdout] 430 | pub type OpParser = impl crate::Parser + Clone; [INFO] [stdout] | --------------------------------------------------------------------- the expected opaque type [INFO] [stdout] 431 | [INFO] [stdout] 432 | pub fn parser() -> OpParser { [INFO] [stdout] | -------- expected `OpParser` because of return type [INFO] [stdout] ... [INFO] [stdout] 868 | FixedReader::::new().and_then(operator_parser) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected opaque type, found `AndThen, ...>` [INFO] [stdout] | [INFO] [stdout] = note: expected opaque type `OpParser` [INFO] [stdout] found struct `AndThen, fn(u8) -> impl wasm_reader_traits::Parser> {operator_parser}>` [INFO] [stdout] note: this item must have a `#[define_opaque(OpParser)]` attribute to be able to define hidden types [INFO] [stdout] --> src/operations.rs:432:12 [INFO] [stdout] | [INFO] [stdout] 432 | pub fn parser() -> OpParser { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0308, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0308`. [INFO] [stdout] [INFO] [stderr] error: could not compile `wasm-reader` (lib) due to 8 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "c86f37a83fdcef5c8ba6d3c07ffb54e59de6e8cae639df17d9d4c3485430123e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c86f37a83fdcef5c8ba6d3c07ffb54e59de6e8cae639df17d9d4c3485430123e", kill_on_drop: false }` [INFO] [stdout] c86f37a83fdcef5c8ba6d3c07ffb54e59de6e8cae639df17d9d4c3485430123e