[INFO] fetching crate meet-macro 0.1.0... [INFO] checking meet-macro-0.1.0 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1 [INFO] extracting crate meet-macro 0.1.0 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate meet-macro 0.1.0 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate meet-macro 0.1.0 [INFO] finished tweaking crates.io crate meet-macro 0.1.0 [INFO] tweaked toml for crates.io crate meet-macro 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 8 packages to latest compatible versions [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.77) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8fb3413b1ce0de451f04b053628af353d0674e2a6d4df0d2c0122943f11c32fa [INFO] running `Command { std: "docker" "start" "-a" "8fb3413b1ce0de451f04b053628af353d0674e2a6d4df0d2c0122943f11c32fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8fb3413b1ce0de451f04b053628af353d0674e2a6d4df0d2c0122943f11c32fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8fb3413b1ce0de451f04b053628af353d0674e2a6d4df0d2c0122943f11c32fa", kill_on_drop: false }` [INFO] [stdout] 8fb3413b1ce0de451f04b053628af353d0674e2a6d4df0d2c0122943f11c32fa [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 184261be5e7fcd7e40c18d393fa80d8d7c5caa5ec2d9ba1975a0001a7b2e7587 [INFO] running `Command { std: "docker" "start" "-a" "184261be5e7fcd7e40c18d393fa80d8d7c5caa5ec2d9ba1975a0001a7b2e7587", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro-hack v0.5.20+deprecated [INFO] [stderr] Checking lazy_static v1.5.0 [INFO] [stderr] Checking boolinator v2.4.0 [INFO] [stderr] Checking syn v1.0.109 [INFO] [stderr] Checking meet-macro v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition name: `has_maybe_uninit` [INFO] [stdout] --> src/html_tree/html_component.rs:105:19 [INFO] [stdout] | [INFO] [stdout] 105 | #[cfg(has_maybe_uninit)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows` [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(has_maybe_uninit)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(has_maybe_uninit)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `has_maybe_uninit` [INFO] [stdout] --> src/html_tree/html_component.rs:112:23 [INFO] [stdout] | [INFO] [stdout] 112 | #[cfg(not(has_maybe_uninit))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(has_maybe_uninit)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(has_maybe_uninit)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `has_maybe_uninit` [INFO] [stdout] --> src/html_tree/html_component.rs:105:19 [INFO] [stdout] | [INFO] [stdout] 105 | #[cfg(has_maybe_uninit)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows` [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(has_maybe_uninit)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(has_maybe_uninit)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `has_maybe_uninit` [INFO] [stdout] --> src/html_tree/html_component.rs:112:23 [INFO] [stdout] | [INFO] [stdout] 112 | #[cfg(not(has_maybe_uninit))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(has_maybe_uninit)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(has_maybe_uninit)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&proc_macro2::Ident` instead of cloning the inner type [INFO] [stdout] --> src/derive_props/builder.rs:52:23 [INFO] [stdout] | [INFO] [stdout] 52 | step_trait.clone().to_owned(), [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&proc_macro2::Ident` instead of cloning the inner type [INFO] [stdout] --> src/derive_props/builder.rs:52:23 [INFO] [stdout] | [INFO] [stdout] 52 | step_trait.clone().to_owned(), [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.96s [INFO] running `Command { std: "docker" "inspect" "184261be5e7fcd7e40c18d393fa80d8d7c5caa5ec2d9ba1975a0001a7b2e7587", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "184261be5e7fcd7e40c18d393fa80d8d7c5caa5ec2d9ba1975a0001a7b2e7587", kill_on_drop: false }` [INFO] [stdout] 184261be5e7fcd7e40c18d393fa80d8d7c5caa5ec2d9ba1975a0001a7b2e7587 [INFO] checking meet-macro-0.1.0 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1 [INFO] extracting crate meet-macro 0.1.0 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate meet-macro 0.1.0 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate meet-macro 0.1.0 [INFO] finished tweaking crates.io crate meet-macro 0.1.0 [INFO] tweaked toml for crates.io crate meet-macro 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 8 packages to latest compatible versions [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.77) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1acfda527036d8a0b669a21041743bc581905d2ee5aaa7292760a7570d344c5b [INFO] running `Command { std: "docker" "start" "-a" "1acfda527036d8a0b669a21041743bc581905d2ee5aaa7292760a7570d344c5b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1acfda527036d8a0b669a21041743bc581905d2ee5aaa7292760a7570d344c5b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1acfda527036d8a0b669a21041743bc581905d2ee5aaa7292760a7570d344c5b", kill_on_drop: false }` [INFO] [stdout] 1acfda527036d8a0b669a21041743bc581905d2ee5aaa7292760a7570d344c5b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] aa2bb985de30d77952eeb08fabf16ea1baf2e18c75fabe2df485e6c65f95900a [INFO] running `Command { std: "docker" "start" "-a" "aa2bb985de30d77952eeb08fabf16ea1baf2e18c75fabe2df485e6c65f95900a", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro-hack v0.5.20+deprecated [INFO] [stderr] Checking lazy_static v1.5.0 [INFO] [stderr] Checking boolinator v2.4.0 [INFO] [stderr] Checking syn v1.0.109 [INFO] [stderr] Checking meet-macro v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition name: `has_maybe_uninit` [INFO] [stdout] --> src/html_tree/html_component.rs:105:19 [INFO] [stdout] | [INFO] [stdout] 105 | #[cfg(has_maybe_uninit)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows` [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(has_maybe_uninit)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(has_maybe_uninit)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `has_maybe_uninit` [INFO] [stdout] --> src/html_tree/html_component.rs:112:23 [INFO] [stdout] | [INFO] [stdout] 112 | #[cfg(not(has_maybe_uninit))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(has_maybe_uninit)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(has_maybe_uninit)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `has_maybe_uninit` [INFO] [stdout] --> src/html_tree/html_component.rs:105:19 [INFO] [stdout] | [INFO] [stdout] 105 | #[cfg(has_maybe_uninit)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows` [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(has_maybe_uninit)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(has_maybe_uninit)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `has_maybe_uninit` [INFO] [stdout] --> src/html_tree/html_component.rs:112:23 [INFO] [stdout] | [INFO] [stdout] 112 | #[cfg(not(has_maybe_uninit))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(has_maybe_uninit)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(has_maybe_uninit)");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&proc_macro2::Ident` instead of cloning the inner type [INFO] [stdout] --> src/derive_props/builder.rs:52:23 [INFO] [stdout] | [INFO] [stdout] 52 | step_trait.clone().to_owned(), [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&proc_macro2::Ident` instead of cloning the inner type [INFO] [stdout] --> src/derive_props/builder.rs:52:23 [INFO] [stdout] | [INFO] [stdout] 52 | step_trait.clone().to_owned(), [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(suspicious_double_ref_op)]` on by default [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 4.02s [INFO] running `Command { std: "docker" "inspect" "aa2bb985de30d77952eeb08fabf16ea1baf2e18c75fabe2df485e6c65f95900a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aa2bb985de30d77952eeb08fabf16ea1baf2e18c75fabe2df485e6c65f95900a", kill_on_drop: false }` [INFO] [stdout] aa2bb985de30d77952eeb08fabf16ea1baf2e18c75fabe2df485e6c65f95900a