[INFO] fetching crate concrete-fftw-sys 0.1.4...
[INFO] testing concrete-fftw-sys-0.1.4 against beta-2024-10-19 for beta-1.83-1
[INFO] extracting crate concrete-fftw-sys 0.1.4 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate concrete-fftw-sys 0.1.4 on toolchain beta-2024-10-19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-10-19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate concrete-fftw-sys 0.1.4
[INFO] finished tweaking crates.io crate concrete-fftw-sys 0.1.4
[INFO] tweaked toml for crates.io crate concrete-fftw-sys 0.1.4 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-10-19" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding fs_extra v1.2.0 (available: v1.3.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-10-19" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-10-19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9de43757b12b57e33862e4ea7414f86e8f15881a41c145afdd1d77f89b3122f4
[INFO] running `Command { std: "docker" "start" "-a" "9de43757b12b57e33862e4ea7414f86e8f15881a41c145afdd1d77f89b3122f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9de43757b12b57e33862e4ea7414f86e8f15881a41c145afdd1d77f89b3122f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9de43757b12b57e33862e4ea7414f86e8f15881a41c145afdd1d77f89b3122f4", kill_on_drop: false }`
[INFO] [stdout] 9de43757b12b57e33862e4ea7414f86e8f15881a41c145afdd1d77f89b3122f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-10-19" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca04d0bd7e41b87d7475f48dfb909d4dfa489382e609af14c26538faa4efb6da
[INFO] running `Command { std: "docker" "start" "-a" "ca04d0bd7e41b87d7475f48dfb909d4dfa489382e609af14c26538faa4efb6da", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling fs_extra v1.2.0
[INFO] [stderr]    Compiling concrete-fftw-sys v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `macos`
[INFO] [stdout]   --> build.rs:52:21
[INFO] [stdout]    |
[INFO] [stdout] 52 |             if cfg!(macos) {
[INFO] [stdout]    |                     ^^^^^ help: found config with similar value: `target_os = "macos"`
[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(macos)'] }
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> 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: `macos`
[INFO] [stdout]   --> build.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |             if cfg!(macos) {
[INFO] [stdout]    |                     ^^^^^ help: found config with similar value: `target_os = "macos"`
[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(macos)'] }
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stdout] warning: unexpected `cfg` condition value: `quad`
[INFO] [stdout]  --> src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(feature = "quad")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `quad` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4m 48s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "ca04d0bd7e41b87d7475f48dfb909d4dfa489382e609af14c26538faa4efb6da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca04d0bd7e41b87d7475f48dfb909d4dfa489382e609af14c26538faa4efb6da", kill_on_drop: false }`
[INFO] [stdout] ca04d0bd7e41b87d7475f48dfb909d4dfa489382e609af14c26538faa4efb6da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-10-19" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9b19ac69fc696ade6d6672d7adacb2555aa784125815789dd87395e9a1b1ac6
[INFO] running `Command { std: "docker" "start" "-a" "f9b19ac69fc696ade6d6672d7adacb2555aa784125815789dd87395e9a1b1ac6", kill_on_drop: false }`
[INFO] [stdout] warning: unexpected `cfg` condition name: `macos`
[INFO] [stdout]   --> build.rs:52:21
[INFO] [stdout]    |
[INFO] [stdout] 52 |             if cfg!(macos) {
[INFO] [stdout]    |                     ^^^^^ help: found config with similar value: `target_os = "macos"`
[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(macos)'] }
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> 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: `macos`
[INFO] [stdout]   --> build.rs:65:21
[INFO] [stdout]    |
[INFO] [stdout] 65 |             if cfg!(macos) {
[INFO] [stdout]    |                     ^^^^^ help: found config with similar value: `target_os = "macos"`
[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(macos)'] }
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling concrete-fftw-sys v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition value: `quad`
[INFO] [stdout]  --> src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(feature = "quad")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `quad` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> 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 value: `quad`
[INFO] [stdout]  --> src/lib.rs:6:7
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[cfg(feature = "quad")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `quad` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]   --> src/fftw.rs:65:19
[INFO] [stdout]    |
[INFO] [stdout] 65 |         unsafe { &(*(::core::ptr::null::<fftw_iodim_do_not_use_me>())).n as *const _ as usize },
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deref_nullptr)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]   --> src/fftw.rs:75:19
[INFO] [stdout]    |
[INFO] [stdout] 75 |         unsafe { &(*(::core::ptr::null::<fftw_iodim_do_not_use_me>())).is as *const _ as usize },
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]   --> src/fftw.rs:85:19
[INFO] [stdout]    |
[INFO] [stdout] 85 |         unsafe { &(*(::core::ptr::null::<fftw_iodim_do_not_use_me>())).os as *const _ as usize },
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/fftw.rs:115:19
[INFO] [stdout]     |
[INFO] [stdout] 115 |         unsafe { &(*(::core::ptr::null::<fftw_iodim64_do_not_use_me>())).n as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/fftw.rs:125:19
[INFO] [stdout]     |
[INFO] [stdout] 125 |         unsafe { &(*(::core::ptr::null::<fftw_iodim64_do_not_use_me>())).is as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: dereferencing a null pointer
[INFO] [stdout]    --> src/fftw.rs:135:19
[INFO] [stdout]     |
[INFO] [stdout] 135 |         unsafe { &(*(::core::ptr::null::<fftw_iodim64_do_not_use_me>())).os as *const _ as usize },
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "f9b19ac69fc696ade6d6672d7adacb2555aa784125815789dd87395e9a1b1ac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9b19ac69fc696ade6d6672d7adacb2555aa784125815789dd87395e9a1b1ac6", kill_on_drop: false }`
[INFO] [stdout] f9b19ac69fc696ade6d6672d7adacb2555aa784125815789dd87395e9a1b1ac6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-10-19" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 474026cc267e8059c9a27fe2c338a0cf4106c9532514c8efea05695c65ffa861
[INFO] running `Command { std: "docker" "start" "-a" "474026cc267e8059c9a27fe2c338a0cf4106c9532514c8efea05695c65ffa861", kill_on_drop: false }`
[INFO] [stderr] warning: unexpected `cfg` condition name: `macos`
[INFO] [stderr]   --> build.rs:52:21
[INFO] [stderr]    |
[INFO] [stderr] 52 |             if cfg!(macos) {
[INFO] [stderr]    |                     ^^^^^ help: found config with similar value: `target_os = "macos"`
[INFO] [stderr]    |
[INFO] [stderr]    = 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] [stderr]    = help: consider using a Cargo feature instead
[INFO] [stderr]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]             [lints.rust]
[INFO] [stderr]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(macos)'] }
[INFO] [stderr]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unexpected `cfg` condition name: `macos`
[INFO] [stderr]   --> build.rs:65:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |             if cfg!(macos) {
[INFO] [stderr]    |                     ^^^^^ help: found config with similar value: `target_os = "macos"`
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider using a Cargo feature instead
[INFO] [stderr]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stderr]             [lints.rust]
[INFO] [stderr]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(macos)'] }
[INFO] [stderr]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stderr] 
[INFO] [stderr] warning: `concrete-fftw-sys` (build script) generated 2 warnings
[INFO] [stderr] warning: unexpected `cfg` condition value: `quad`
[INFO] [stderr]  --> src/lib.rs:6:7
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[cfg(feature = "quad")]
[INFO] [stdout] 
[INFO] [stderr]   |       ^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout] running 2 tests
[INFO] [stderr]   |
[INFO] [stdout] test bindgen_test_layout_fftw_iodim64_do_not_use_me ... ok
[INFO] [stderr]   = note: no expected values for `feature`
[INFO] [stdout] test bindgen_test_layout_fftw_iodim_do_not_use_me ... ok
[INFO] [stderr]   = help: consider adding `quad` as a feature in `Cargo.toml`
[INFO] [stdout] 
[INFO] [stderr]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: dereferencing a null pointer
[INFO] [stderr]   --> src/fftw.rs:65:19
[INFO] [stderr]    |
[INFO] [stderr] 65 |         unsafe { &(*(::core::ptr::null::<fftw_iodim_do_not_use_me>())).n as *const _ as usize },
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deref_nullptr)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: dereferencing a null pointer
[INFO] [stderr]   --> src/fftw.rs:75:19
[INFO] [stderr]    |
[INFO] [stderr] 75 |         unsafe { &(*(::core::ptr::null::<fftw_iodim_do_not_use_me>())).is as *const _ as usize },
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stderr] 
[INFO] [stderr] warning: dereferencing a null pointer
[INFO] [stderr]   --> src/fftw.rs:85:19
[INFO] [stderr]    |
[INFO] [stderr] 85 |         unsafe { &(*(::core::ptr::null::<fftw_iodim_do_not_use_me>())).os as *const _ as usize },
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stderr] 
[INFO] [stderr] warning: dereferencing a null pointer
[INFO] [stderr]    --> src/fftw.rs:115:19
[INFO] [stderr]     |
[INFO] [stderr] 115 |         unsafe { &(*(::core::ptr::null::<fftw_iodim64_do_not_use_me>())).n as *const _ as usize },
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stderr] 
[INFO] [stderr] warning: dereferencing a null pointer
[INFO] [stderr]    --> src/fftw.rs:125:19
[INFO] [stderr]     |
[INFO] [stderr] 125 |         unsafe { &(*(::core::ptr::null::<fftw_iodim64_do_not_use_me>())).is as *const _ as usize },
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stderr] 
[INFO] [stderr] warning: dereferencing a null pointer
[INFO] [stderr]    --> src/fftw.rs:135:19
[INFO] [stderr]     |
[INFO] [stderr] 135 |         unsafe { &(*(::core::ptr::null::<fftw_iodim64_do_not_use_me>())).os as *const _ as usize },
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this code causes undefined behavior when executed
[INFO] [stderr] 
[INFO] [stderr] warning: `concrete-fftw-sys` (lib) generated 1 warning
[INFO] [stderr] warning: `concrete-fftw-sys` (lib test) generated 7 warnings (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: fs_extra v1.2.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/concrete_fftw_sys-fb4ab6f947a8e590)
[INFO] [stderr]    Doc-tests concrete_fftw_sys
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "474026cc267e8059c9a27fe2c338a0cf4106c9532514c8efea05695c65ffa861", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "474026cc267e8059c9a27fe2c338a0cf4106c9532514c8efea05695c65ffa861", kill_on_drop: false }`
[INFO] [stdout] 474026cc267e8059c9a27fe2c338a0cf4106c9532514c8efea05695c65ffa861