[INFO] fetching crate syn-serde 0.3.1... [INFO] testing syn-serde-0.3.1 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate syn-serde 0.3.1 into /workspace/builds/worker-2-tc2/source [INFO] started tweaking crates.io crate syn-serde 0.3.1 [INFO] finished tweaking crates.io crate syn-serde 0.3.1 [INFO] tweaked toml for crates.io crate syn-serde 0.3.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate syn-serde 0.3.1 on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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" "+beta-2025-10-28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 11 packages to latest compatible versions [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 85fe34fe1a8e8d2dc12d547b74bc510e416083affedc799a5e8b054ac07822b8 [INFO] running `Command { std: "docker" "start" "-a" "85fe34fe1a8e8d2dc12d547b74bc510e416083affedc799a5e8b054ac07822b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "85fe34fe1a8e8d2dc12d547b74bc510e416083affedc799a5e8b054ac07822b8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "85fe34fe1a8e8d2dc12d547b74bc510e416083affedc799a5e8b054ac07822b8", kill_on_drop: false }` [INFO] [stdout] 85fe34fe1a8e8d2dc12d547b74bc510e416083affedc799a5e8b054ac07822b8 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c996b321f71ae13fd1236435c488acabd0ee83f8d22c842640c96abfdba51532 [INFO] running `Command { std: "docker" "start" "-a" "c996b321f71ae13fd1236435c488acabd0ee83f8d22c842640c96abfdba51532", kill_on_drop: false }` [INFO] [stderr] Compiling unicode-ident v1.0.22 [INFO] [stderr] Compiling proc-macro2 v1.0.103 [INFO] [stderr] Compiling quote v1.0.41 [INFO] [stderr] Compiling serde_core v1.0.228 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling syn v2.0.108 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling syn-serde v0.3.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `VisRestricted` [INFO] [stdout] --> src/data.rs:7:55 [INFO] [stdout] | [INFO] [stdout] 7 | ast_struct::{FieldsNamed, FieldsUnnamed, Variant, VisRestricted}, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `GenericArgument` [INFO] [stdout] --> src/expr.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 6 | ast_enum::{Expr, GenericArgument, Member, RangeLimits}, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Variadic` [INFO] [stdout] --> src/ty.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | Variadic, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/macros.rs:33:14 [INFO] [stdout] | [INFO] [stdout] 32 | Self::Adapter::from(self) [INFO] [stdout] | ------------------------- any code following this expression is unreachable [INFO] [stdout] 33 | } [INFO] [stdout] | ^ unreachable expression [INFO] [stdout] | [INFO] [stdout] ::: src/gen/convert.rs:1612:1 [INFO] [stdout] | [INFO] [stdout] 1612 | syn_trait_impl!(syn::ImplRestriction); [INFO] [stdout] | ------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] note: this expression has type `ast_enum::ImplRestriction`, which is uninhabited [INFO] [stdout] --> src/macros.rs:32:17 [INFO] [stdout] | [INFO] [stdout] 32 | Self::Adapter::from(self) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/gen/convert.rs:1612:1 [INFO] [stdout] | [INFO] [stdout] 1612 | syn_trait_impl!(syn::ImplRestriction); [INFO] [stdout] | ------------------------------------- in this macro invocation [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] = note: this warning originates in the macro `syn_trait_impl` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.82s [INFO] running `Command { std: "docker" "inspect" "c996b321f71ae13fd1236435c488acabd0ee83f8d22c842640c96abfdba51532", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c996b321f71ae13fd1236435c488acabd0ee83f8d22c842640c96abfdba51532", kill_on_drop: false }` [INFO] [stdout] c996b321f71ae13fd1236435c488acabd0ee83f8d22c842640c96abfdba51532 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c4070971c69de55e933e5d0d4780b3276a8dc980a9517e7968edd520885de338 [INFO] running `Command { std: "docker" "start" "-a" "c4070971c69de55e933e5d0d4780b3276a8dc980a9517e7968edd520885de338", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.103 [INFO] [stderr] Compiling quote v1.0.41 [INFO] [stderr] Compiling serde_json v1.0.145 [INFO] [stderr] Compiling itoa v1.0.15 [INFO] [stderr] Compiling ryu v1.0.20 [INFO] [stderr] Compiling memchr v2.7.6 [INFO] [stderr] Compiling syn v2.0.108 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling syn-serde v0.3.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `VisRestricted` [INFO] [stdout] --> src/data.rs:7:55 [INFO] [stdout] | [INFO] [stdout] 7 | ast_struct::{FieldsNamed, FieldsUnnamed, Variant, VisRestricted}, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `GenericArgument` [INFO] [stdout] --> src/expr.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 6 | ast_enum::{Expr, GenericArgument, Member, RangeLimits}, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Variadic` [INFO] [stdout] --> src/ty.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | Variadic, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `VisRestricted` [INFO] [stdout] --> src/data.rs:7:55 [INFO] [stdout] | [INFO] [stdout] 7 | ast_struct::{FieldsNamed, FieldsUnnamed, Variant, VisRestricted}, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `GenericArgument` [INFO] [stdout] --> src/expr.rs:6:22 [INFO] [stdout] | [INFO] [stdout] 6 | ast_enum::{Expr, GenericArgument, Member, RangeLimits}, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Variadic` [INFO] [stdout] --> src/ty.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | Variadic, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/macros.rs:33:14 [INFO] [stdout] | [INFO] [stdout] 32 | Self::Adapter::from(self) [INFO] [stdout] | ------------------------- any code following this expression is unreachable [INFO] [stdout] 33 | } [INFO] [stdout] | ^ unreachable expression [INFO] [stdout] | [INFO] [stdout] ::: src/gen/convert.rs:1612:1 [INFO] [stdout] | [INFO] [stdout] 1612 | syn_trait_impl!(syn::ImplRestriction); [INFO] [stdout] | ------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] note: this expression has type `ast_enum::ImplRestriction`, which is uninhabited [INFO] [stdout] --> src/macros.rs:32:17 [INFO] [stdout] | [INFO] [stdout] 32 | Self::Adapter::from(self) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/gen/convert.rs:1612:1 [INFO] [stdout] | [INFO] [stdout] 1612 | syn_trait_impl!(syn::ImplRestriction); [INFO] [stdout] | ------------------------------------- in this macro invocation [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] = note: this warning originates in the macro `syn_trait_impl` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/macros.rs:33:14 [INFO] [stdout] | [INFO] [stdout] 32 | Self::Adapter::from(self) [INFO] [stdout] | ------------------------- any code following this expression is unreachable [INFO] [stdout] 33 | } [INFO] [stdout] | ^ unreachable expression [INFO] [stdout] | [INFO] [stdout] ::: src/gen/convert.rs:1612:1 [INFO] [stdout] | [INFO] [stdout] 1612 | syn_trait_impl!(syn::ImplRestriction); [INFO] [stdout] | ------------------------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] note: this expression has type `ast_enum::ImplRestriction`, which is uninhabited [INFO] [stdout] --> src/macros.rs:32:17 [INFO] [stdout] | [INFO] [stdout] 32 | Self::Adapter::from(self) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/gen/convert.rs:1612:1 [INFO] [stdout] | [INFO] [stdout] 1612 | syn_trait_impl!(syn::ImplRestriction); [INFO] [stdout] | ------------------------------------- in this macro invocation [INFO] [stdout] = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] = note: this warning originates in the macro `syn_trait_impl` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0433]: failed to resolve: could not find `json` in `syn_serde` [INFO] [stdout] --> tests/test_item.rs:9:47 [INFO] [stdout] | [INFO] [stdout] 9 | println!("actual:\n```\n{}\n", syn_serde::json::to_string_pretty(actual)); [INFO] [stdout] | ^^^^ could not find `json` in `syn_serde` [INFO] [stdout] | [INFO] [stdout] note: found an item that was configured out [INFO] [stdout] --> /opt/rustwide/workdir/src/lib.rs:276:9 [INFO] [stdout] | [INFO] [stdout] 274 | #[cfg(feature = "json")] [INFO] [stdout] | ---------------- the item is gated behind the `json` feature [INFO] [stdout] 275 | #[cfg_attr(docsrs, doc(cfg(feature = "json")))] [INFO] [stdout] 276 | pub mod json; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0433`. [INFO] [stdout] [INFO] [stderr] error: could not compile `syn-serde` (test "test_item") due to 1 previous error [INFO] running `Command { std: "docker" "inspect" "c4070971c69de55e933e5d0d4780b3276a8dc980a9517e7968edd520885de338", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c4070971c69de55e933e5d0d4780b3276a8dc980a9517e7968edd520885de338", kill_on_drop: false }` [INFO] [stdout] c4070971c69de55e933e5d0d4780b3276a8dc980a9517e7968edd520885de338