Auto merge of rust-lang#78439 - lzutao:rm-clouldabi, r=Mark-Simulacrum

Drop support for all cloudabi targets

`cloudabi` is a tier-3 target, and [it is no longer being maintained upstream][no].

This PR drops supports for cloudabi targets. Those targets are:
* aarch64-unknown-cloudabi
* armv7-unknown-cloudabi
* i686-unknown-cloudabi
* x86_64-unknown-cloudabi

Since this drops supports for a target, I'd like somebody to tag `relnotes` label to this PR.

Some other issues:
* The tidy exception for `cloudabi` crate is still remained because
  * `parking_lot v0.9.0` and `parking_lot v0.10.2` depends on `cloudabi v0.0.3`.
  * `parking_lot v0.11.0` depends on `cloudabi v0.1.0`.

[no]: https://github.com/NuxiNL/cloudabi#note-this-project-is-unmaintained

Author: bors

clippy_lints/src/attrs.rs

@@ -40,7 +40,7 @@ static UNIX_SYSTEMS: &[&str] = &[
 ];
 
 // NOTE: windows is excluded from the list because it's also a valid target family.
-static NON_UNIX_SYSTEMS: &[&str] = &["cloudabi", "hermit", "none", "wasi"];
+static NON_UNIX_SYSTEMS: &[&str] = &["hermit", "none", "wasi"];
 
 declare_clippy_lint! {
     /// **What it does:** Checks for items annotated with `#[inline(always)]`,

tests/ui/mismatched_target_os_non_unix.fixed

@@ -3,9 +3,6 @@
 #![warn(clippy::mismatched_target_os)]
 #![allow(unused)]
 
-#[cfg(target_os = "cloudabi")]
-fn cloudabi() {}
-
 #[cfg(target_os = "hermit")]
 fn hermit() {}
 
@@ -16,7 +13,7 @@ fn wasi() {}
 fn none() {}
 
 // list with conditions
-#[cfg(all(not(any(windows, target_os = "cloudabi")), target_os = "wasi"))]
+#[cfg(all(not(windows), target_os = "wasi"))]
 fn list() {}
 
 // windows is a valid target family, should be ignored

tests/ui/mismatched_target_os_non_unix.rs

@@ -3,9 +3,6 @@
 #![warn(clippy::mismatched_target_os)]
 #![allow(unused)]
 
-#[cfg(cloudabi)]
-fn cloudabi() {}
-
 #[cfg(hermit)]
 fn hermit() {}
 
@@ -16,7 +13,7 @@ fn wasi() {}
 fn none() {}
 
 // list with conditions
-#[cfg(all(not(any(windows, cloudabi)), wasi))]
+#[cfg(all(not(windows), wasi))]
 fn list() {}
 
 // windows is a valid target family, should be ignored

tests/ui/mismatched_target_os_non_unix.stderr

@@ -1,51 +1,36 @@
 error: operating system used in target family position
   --> $DIR/mismatched_target_os_non_unix.rs:6:1
    |
-LL | #[cfg(cloudabi)]
-   | ^^^^^^--------^^
-   |       |
-   |       help: try: `target_os = "cloudabi"`
-   |
-   = note: `-D clippy::mismatched-target-os` implied by `-D warnings`
-
-error: operating system used in target family position
-  --> $DIR/mismatched_target_os_non_unix.rs:9:1
-   |
 LL | #[cfg(hermit)]
    | ^^^^^^------^^
    |       |
    |       help: try: `target_os = "hermit"`
+   |
+   = note: `-D clippy::mismatched-target-os` implied by `-D warnings`
 
 error: operating system used in target family position
-  --> $DIR/mismatched_target_os_non_unix.rs:12:1
+  --> $DIR/mismatched_target_os_non_unix.rs:9:1
    |
 LL | #[cfg(wasi)]
    | ^^^^^^----^^
    |       |
    |       help: try: `target_os = "wasi"`
 
 error: operating system used in target family position
-  --> $DIR/mismatched_target_os_non_unix.rs:15:1
+  --> $DIR/mismatched_target_os_non_unix.rs:12:1
    |
 LL | #[cfg(none)]
    | ^^^^^^----^^
    |       |
    |       help: try: `target_os = "none"`
 
 error: operating system used in target family position
-  --> $DIR/mismatched_target_os_non_unix.rs:19:1
-   |
-LL | #[cfg(all(not(any(windows, cloudabi)), wasi))]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-help: try
-   |
-LL | #[cfg(all(not(any(windows, target_os = "cloudabi")), wasi))]
-   |                            ^^^^^^^^^^^^^^^^^^^^^^
-help: try
+  --> $DIR/mismatched_target_os_non_unix.rs:16:1
    |
-LL | #[cfg(all(not(any(windows, cloudabi)), target_os = "wasi"))]
-   |                                        ^^^^^^^^^^^^^^^^^^
+LL | #[cfg(all(not(windows), wasi))]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^----^^^
+   |                         |
+   |                         help: try: `target_os = "wasi"`
 
-error: aborting due to 5 previous errors
+error: aborting due to 4 previous errors