[INFO] fetching crate pomsky 0.11.0... [INFO] checking pomsky-0.11.0 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1 [INFO] extracting crate pomsky 0.11.0 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate pomsky 0.11.0 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 pomsky 0.11.0 [INFO] removed 1 missing tests [INFO] finished tweaking crates.io crate pomsky 0.11.0 [INFO] tweaked toml for crates.io crate pomsky 0.11.0 written to /workspace/builds/worker-1-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 46 packages to latest compatible versions [INFO] [stderr] Adding miette v5.10.0 (latest: v7.2.0) [INFO] [stderr] Adding miette-derive v5.10.0 (latest: v7.2.0) [INFO] [stderr] Adding owo-colors v3.5.0 (latest: v4.0.0) [INFO] [stderr] Adding strsim v0.10.0 (latest: v0.11.1) [INFO] [stderr] Adding supports-color v2.1.0 (latest: v3.0.0) [INFO] [stderr] Adding supports-hyperlinks v2.1.0 (latest: v3.0.0) [INFO] [stderr] Adding supports-unicode v2.1.0 (latest: v3.0.0) [INFO] [stderr] Adding terminal_size v0.1.17 (latest: v0.3.0) [INFO] [stderr] Adding textwrap v0.15.2 (latest: v0.16.1) [INFO] [stderr] Adding windows-sys v0.52.0 (latest: v0.59.0) [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] [stderr] Downloading crates ... [INFO] [stderr] Downloaded pomsky-syntax v0.11.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 92af19d9cbff5afad50344cd189ff9ce3938b6e224ebfa2a9b853bb1202e6959 [INFO] running `Command { std: "docker" "start" "-a" "92af19d9cbff5afad50344cd189ff9ce3938b6e224ebfa2a9b853bb1202e6959", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "92af19d9cbff5afad50344cd189ff9ce3938b6e224ebfa2a9b853bb1202e6959", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "92af19d9cbff5afad50344cd189ff9ce3938b6e224ebfa2a9b853bb1202e6959", kill_on_drop: false }` [INFO] [stdout] 92af19d9cbff5afad50344cd189ff9ce3938b6e224ebfa2a9b853bb1202e6959 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] fed57c383a01b2ae4fa9e658377af3dac71962990a6f98ea074f95ccd58fcc98 [INFO] running `Command { std: "docker" "start" "-a" "fed57c383a01b2ae4fa9e658377af3dac71962990a6f98ea074f95ccd58fcc98", kill_on_drop: false }` [INFO] [stderr] Compiling pomsky-syntax v0.11.0 [INFO] [stderr] Checking lexopt v0.3.0 [INFO] [stderr] Checking regex-automata v0.4.7 [INFO] [stderr] Checking pomsky v0.11.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition name: `FALSE` [INFO] [stdout] --> src/exprs/range.rs:341:7 [INFO] [stdout] | [INFO] [stdout] 341 | #[cfg(FALSE)] [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(FALSE)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(FALSE)");` 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: `FALSE` [INFO] [stdout] --> src/exprs/range.rs:413:11 [INFO] [stdout] | [INFO] [stdout] 413 | #[cfg(FALSE)] [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(FALSE)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(FALSE)");` 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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking regex v1.10.6 [INFO] [stdout] warning: unexpected `cfg` condition name: `FALSE` [INFO] [stdout] --> src/exprs/range.rs:341:7 [INFO] [stdout] | [INFO] [stdout] 341 | #[cfg(FALSE)] [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(FALSE)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(FALSE)");` 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: `FALSE` [INFO] [stdout] --> src/exprs/range.rs:413:11 [INFO] [stdout] | [INFO] [stdout] 413 | #[cfg(FALSE)] [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(FALSE)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(FALSE)");` 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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.52s [INFO] running `Command { std: "docker" "inspect" "fed57c383a01b2ae4fa9e658377af3dac71962990a6f98ea074f95ccd58fcc98", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fed57c383a01b2ae4fa9e658377af3dac71962990a6f98ea074f95ccd58fcc98", kill_on_drop: false }` [INFO] [stdout] fed57c383a01b2ae4fa9e658377af3dac71962990a6f98ea074f95ccd58fcc98 [INFO] checking pomsky-0.11.0 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1 [INFO] extracting crate pomsky 0.11.0 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate pomsky 0.11.0 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 pomsky 0.11.0 [INFO] removed 1 missing tests [INFO] finished tweaking crates.io crate pomsky 0.11.0 [INFO] tweaked toml for crates.io crate pomsky 0.11.0 written to /workspace/builds/worker-1-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] 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 46 packages to latest compatible versions [INFO] [stderr] Adding miette v5.10.0 (latest: v7.2.0) [INFO] [stderr] Adding miette-derive v5.10.0 (latest: v7.2.0) [INFO] [stderr] Adding owo-colors v3.5.0 (latest: v4.0.0) [INFO] [stderr] Adding strsim v0.10.0 (latest: v0.11.1) [INFO] [stderr] Adding supports-color v2.1.0 (latest: v3.0.0) [INFO] [stderr] Adding supports-hyperlinks v2.1.0 (latest: v3.0.0) [INFO] [stderr] Adding supports-unicode v2.1.0 (latest: v3.0.0) [INFO] [stderr] Adding terminal_size v0.1.17 (latest: v0.3.0) [INFO] [stderr] Adding textwrap v0.15.2 (latest: v0.16.1) [INFO] [stderr] Adding windows-sys v0.52.0 (latest: v0.59.0) [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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 050eb8e04a7e2931edbeabb10673aac63a6641f57072c17e56b27595b24a6b0b [INFO] running `Command { std: "docker" "start" "-a" "050eb8e04a7e2931edbeabb10673aac63a6641f57072c17e56b27595b24a6b0b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "050eb8e04a7e2931edbeabb10673aac63a6641f57072c17e56b27595b24a6b0b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "050eb8e04a7e2931edbeabb10673aac63a6641f57072c17e56b27595b24a6b0b", kill_on_drop: false }` [INFO] [stdout] 050eb8e04a7e2931edbeabb10673aac63a6641f57072c17e56b27595b24a6b0b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 0993d14192e4bfad31b6b91a9c6e2a5dfc34cfcbe7db3048ab6301f56c5112e7 [INFO] running `Command { std: "docker" "start" "-a" "0993d14192e4bfad31b6b91a9c6e2a5dfc34cfcbe7db3048ab6301f56c5112e7", kill_on_drop: false }` [INFO] [stderr] Compiling pomsky-syntax v0.11.0 [INFO] [stderr] Checking lexopt v0.3.0 [INFO] [stderr] Checking regex-automata v0.4.7 [INFO] [stderr] Checking pomsky v0.11.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition name: `FALSE` [INFO] [stdout] --> src/exprs/range.rs:341:7 [INFO] [stdout] | [INFO] [stdout] 341 | #[cfg(FALSE)] [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(FALSE)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(FALSE)");` 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: `FALSE` [INFO] [stdout] --> src/exprs/range.rs:413:11 [INFO] [stdout] | [INFO] [stdout] 413 | #[cfg(FALSE)] [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(FALSE)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(FALSE)");` 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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking regex v1.10.6 [INFO] [stdout] warning: unexpected `cfg` condition name: `FALSE` [INFO] [stdout] --> src/exprs/range.rs:341:7 [INFO] [stdout] | [INFO] [stdout] 341 | #[cfg(FALSE)] [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(FALSE)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(FALSE)");` 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: `FALSE` [INFO] [stdout] --> src/exprs/range.rs:413:11 [INFO] [stdout] | [INFO] [stdout] 413 | #[cfg(FALSE)] [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(FALSE)'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(FALSE)");` 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: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.50s [INFO] running `Command { std: "docker" "inspect" "0993d14192e4bfad31b6b91a9c6e2a5dfc34cfcbe7db3048ab6301f56c5112e7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0993d14192e4bfad31b6b91a9c6e2a5dfc34cfcbe7db3048ab6301f56c5112e7", kill_on_drop: false }` [INFO] [stdout] 0993d14192e4bfad31b6b91a9c6e2a5dfc34cfcbe7db3048ab6301f56c5112e7