[INFO] fetching crate therror 0.0.48... [INFO] checking therror-0.0.48 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate therror 0.0.48 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate therror 0.0.48 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] removed /workspace/builds/worker-3-tc2/source/rust-toolchain.toml [INFO] started tweaking crates.io crate therror 0.0.48 [INFO] finished tweaking crates.io crate therror 0.0.48 [INFO] tweaked toml for crates.io crate therror 0.0.48 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 38 packages to latest compatible versions [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0b1820282e366554062f024c5f39dbf702ed97c68a1b0dc01c7871d2ed53af03 [INFO] running `Command { std: "docker" "start" "-a" "0b1820282e366554062f024c5f39dbf702ed97c68a1b0dc01c7871d2ed53af03", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0b1820282e366554062f024c5f39dbf702ed97c68a1b0dc01c7871d2ed53af03", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0b1820282e366554062f024c5f39dbf702ed97c68a1b0dc01c7871d2ed53af03", kill_on_drop: false }` [INFO] [stdout] 0b1820282e366554062f024c5f39dbf702ed97c68a1b0dc01c7871d2ed53af03 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 96942152b543208c994bc0861d23003b277b884e7a681970f583620308bab908 [INFO] running `Command { std: "docker" "start" "-a" "96942152b543208c994bc0861d23003b277b884e7a681970f583620308bab908", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.210 [INFO] [stderr] Checking winnow v0.6.20 [INFO] [stderr] Compiling ref-cast v1.0.23 [INFO] [stderr] Compiling anyhow v1.0.89 [INFO] [stderr] Compiling trybuild v1.0.99 [INFO] [stderr] Compiling therror v0.0.48 (/opt/rustwide/workdir) [INFO] [stderr] Checking dissimilar v1.0.9 [INFO] [stderr] Checking glob v0.3.1 [INFO] [stderr] Compiling syn v2.0.79 [INFO] [stderr] Compiling therror-impl v0.0.48 [INFO] [stderr] Compiling serde_derive v1.0.210 [INFO] [stderr] Compiling ref-cast-impl v1.0.23 [INFO] [stderr] Checking serde_spanned v0.6.8 [INFO] [stderr] Checking toml_datetime v0.6.8 [INFO] [stderr] Checking serde_json v1.0.128 [INFO] [stdout] warning: unexpected `cfg` condition name: `error_generic_member_access` [INFO] [stdout] --> src/lib.rs:238:13 [INFO] [stdout] | [INFO] [stdout] 238 | #![cfg_attr(error_generic_member_access, feature(error_generic_member_access))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `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(error_generic_member_access)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(error_generic_member_access)");` 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: `error_generic_member_access` [INFO] [stdout] --> src/lib.rs:242:7 [INFO] [stdout] | [INFO] [stdout] 242 | #[cfg(error_generic_member_access)] [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(error_generic_member_access)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(error_generic_member_access)");` 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: `error_generic_member_access` [INFO] [stdout] --> src/lib.rs:254:11 [INFO] [stdout] | [INFO] [stdout] 254 | #[cfg(error_generic_member_access)] [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(error_generic_member_access)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(error_generic_member_access)");` 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: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking toml_edit v0.22.22 [INFO] [stderr] Checking toml v0.8.19 [INFO] [stdout] warning: unexpected `cfg` condition name: `thiserror_nightly_testing` [INFO] [stdout] --> tests/test_backtrace.rs:1:13 [INFO] [stdout] | [INFO] [stdout] 1 | #![cfg_attr(thiserror_nightly_testing, feature(error_generic_member_access))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `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(thiserror_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(thiserror_nightly_testing)");` 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: `thiserror_nightly_testing` [INFO] [stdout] --> tests/test_backtrace.rs:9:7 [INFO] [stdout] | [INFO] [stdout] 9 | #[cfg(thiserror_nightly_testing)] [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(thiserror_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(thiserror_nightly_testing)");` 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: `thiserror_nightly_testing` [INFO] [stdout] --> tests/test_backtrace.rs:16:7 [INFO] [stdout] | [INFO] [stdout] 16 | #[cfg(thiserror_nightly_testing)] [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(thiserror_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(thiserror_nightly_testing)");` 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: `thiserror_nightly_testing` [INFO] [stdout] --> tests/test_backtrace.rs:150:7 [INFO] [stdout] | [INFO] [stdout] 150 | #[cfg(thiserror_nightly_testing)] [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(thiserror_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(thiserror_nightly_testing)");` 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: `thiserror_nightly_testing` [INFO] [stdout] --> tests/test_backtrace.rs:273:16 [INFO] [stdout] | [INFO] [stdout] 273 | #[cfg_attr(not(thiserror_nightly_testing), ignore)] [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(thiserror_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(thiserror_nightly_testing)");` 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: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `error_generic_member_access` [INFO] [stdout] --> src/lib.rs:238:13 [INFO] [stdout] | [INFO] [stdout] 238 | #![cfg_attr(error_generic_member_access, feature(error_generic_member_access))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `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(error_generic_member_access)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(error_generic_member_access)");` 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: `error_generic_member_access` [INFO] [stdout] --> src/lib.rs:242:7 [INFO] [stdout] | [INFO] [stdout] 242 | #[cfg(error_generic_member_access)] [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(error_generic_member_access)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(error_generic_member_access)");` 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: `error_generic_member_access` [INFO] [stdout] --> src/lib.rs:254:11 [INFO] [stdout] | [INFO] [stdout] 254 | #[cfg(error_generic_member_access)] [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(error_generic_member_access)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(error_generic_member_access)");` 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: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `thiserror_nightly_testing` [INFO] [stdout] --> tests/test_option.rs:1:13 [INFO] [stdout] | [INFO] [stdout] 1 | #![cfg_attr(thiserror_nightly_testing, feature(error_generic_member_access))] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `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(thiserror_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(thiserror_nightly_testing)");` 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: `thiserror_nightly_testing` [INFO] [stdout] --> tests/test_option.rs:3:7 [INFO] [stdout] | [INFO] [stdout] 3 | #[cfg(thiserror_nightly_testing)] [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(thiserror_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(thiserror_nightly_testing)");` 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: `thiserror_nightly_testing` [INFO] [stdout] --> tests/test_option.rs:48:7 [INFO] [stdout] | [INFO] [stdout] 48 | #[cfg(thiserror_nightly_testing)] [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(thiserror_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(thiserror_nightly_testing)");` 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: `thiserror_nightly_testing` [INFO] [stdout] --> tests/test_option.rs:104:16 [INFO] [stdout] | [INFO] [stdout] 104 | #[cfg_attr(not(thiserror_nightly_testing), ignore)] [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(thiserror_nightly_testing)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(thiserror_nightly_testing)");` 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: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.24s [INFO] running `Command { std: "docker" "inspect" "96942152b543208c994bc0861d23003b277b884e7a681970f583620308bab908", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "96942152b543208c994bc0861d23003b277b884e7a681970f583620308bab908", kill_on_drop: false }` [INFO] [stdout] 96942152b543208c994bc0861d23003b277b884e7a681970f583620308bab908