MSRV builds are broken on macOS

[tnull]

Unfortunately the bump in #2130 didn't consider the MSRV, i.e., reqwest v0.11.25 MSRV builds are broken on macOS:

error[E0658]: use of unstable library feature 'core_ffi_c'
  --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/dynamic_store_copy_specific.rs:11:23
   |
11 | pub type __uint32_t = ::core::ffi::c_uint;
   |                       ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
  --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/dynamic_store_copy_specific.rs:16:19
   |
16 | pub type UInt32 = ::core::ffi::c_uint;
   |                   ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
   --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:164:28
    |
164 | pub type _bindgen_ty_286 = ::core::ffi::c_uint;
    |                            ^^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
  --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:34:26
   |
34 |         nodename: *const ::core::ffi::c_char,
   |                          ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
   --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:244:23
    |
244 |         mtu_cur: *mut ::core::ffi::c_int,
    |                       ^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
   --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:245:23
    |
245 |         mtu_min: *mut ::core::ffi::c_int,
    |                       ^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
   --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:246:23
    |
246 |         mtu_max: *mut ::core::ffi::c_int,
    |                       ^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
   --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:257:14
    |
257 |         mtu: ::core::ffi::c_int,
    |              ^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
  --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_reachability.rs:38:27
   |
38 | pub type _bindgen_ty_65 = ::core::ffi::c_uint;
   |                           ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
  --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_reachability.rs:60:26
   |
60 |         nodename: *const ::core::ffi::c_char,
   |                          ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

For more information about this error, try `rustc --explain E0658`.
error: could not compile `system-configuration-sys` due to 10 previous errorserror[E0658]: use of unstable library feature 'core_ffi_c'
  --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/dynamic_store_copy_specific.rs:11:23
   |
11 | pub type __uint32_t = ::core::ffi::c_uint;
   |                       ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
  --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/dynamic_store_copy_specific.rs:16:19
   |
16 | pub type UInt32 = ::core::ffi::c_uint;
   |                   ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
   --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:164:28
    |
164 | pub type _bindgen_ty_286 = ::core::ffi::c_uint;
    |                            ^^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
  --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:34:26
   |
34 |         nodename: *const ::core::ffi::c_char,
   |                          ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
   --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:244:23
    |
244 |         mtu_cur: *mut ::core::ffi::c_int,
    |                       ^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
   --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:245:23
    |
245 |         mtu_min: *mut ::core::ffi::c_int,
    |                       ^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
   --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:246:23
    |
246 |         mtu_max: *mut ::core::ffi::c_int,
    |                       ^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
   --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_configuration.rs:257:14
    |
257 |         mtu: ::core::ffi::c_int,
    |              ^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
  --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_reachability.rs:38:27
   |
38 | pub type _bindgen_ty_65 = ::core::ffi::c_uint;
   |                           ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

error[E0658]: use of unstable library feature 'core_ffi_c'
  --> /Users/runner/.cargo/registry/src/github.com-1ecc6299db9ec823/system-configuration-sys-0.6.0/src/network_reachability.rs:60:26
   |
60 |         nodename: *const ::core::ffi::c_char,
   |                          ^^^^^^^^^^^^^^^^^^^
   |
   = note: see issue #94501 <https://github.com/rust-lang/rust/issues/94501> for more information

For more information about this error, try `rustc --explain E0658`.
error: could not compile `system-configuration-sys` due to 10 previous errors

It would be great if this could be fixed (i.e., probably the above bump needs to be reverted) and MSRV checks added to the CI, as previously suggested in #1993.

[seanmonstar]

Yea, adding back the MSRV checks on other platforms would be a good idea. We can revert this too (would need to target the 0.11.x branch to release a new non-breaking version).

[seanmonstar]

This was reverted and published as v0.11.26.

[tnull]

This was reverted and published as v0.11.26.

Thank you for the quick response!

[Hywan]

👋

It's good to have reverted #2130, however the issue with system-configuration remains (see #2006). Can we reopen #2006?