Rollup merge of rust-lang#144399 - bjorn3:stdlib_tests_separate_packages, r=Mark-Simulacrum

Add a ratchet for moving all standard library tests to separate packages

rust-lang#136642 is the previous PR in this series. See rust-lang#135937 for the rationale of wanting to move all standard library tests to separate packages.

This also fixes std_detect testing on riscv.

Author: matthiaskrgr

rustc-std-workspace-alloc/Cargo.toml

@@ -9,6 +9,9 @@ edition = "2024"
 
 [lib]
 path = "lib.rs"
+test = false
+bench = false
+doc = false
 
 [dependencies]
 alloc = { path = "../alloc" }

rustc-std-workspace-core/Cargo.toml

@@ -11,6 +11,9 @@ edition = "2024"
 
 [lib]
 path = "lib.rs"
+test = false
+bench = false
+doc = false
 
 [dependencies]
 core = { path = "../core", public = true }

rustc-std-workspace-std/Cargo.toml

@@ -9,6 +9,9 @@ edition = "2024"
 
 [lib]
 path = "lib.rs"
+test = false
+bench = false
+doc = false
 
 [dependencies]
 std = { path = "../std" }

std_detect/src/detect/macros.rs

@@ -131,14 +131,13 @@ macro_rules! features {
             };
         }
 
-        #[test] //tidy:skip
         #[deny(unexpected_cfgs)]
         #[deny(unfulfilled_lint_expectations)]
-        fn unexpected_cfgs() {
+        const _: () = {
             $(
                 check_cfg_feature!($feature, $feature_lit $(, without cfg check: $feature_cfg_check)? $(: $($target_feature_lit),*)?);
             )*
-        }
+        };
 
         /// Each variant denotes a position in a bitset for a particular feature.
         ///

std_detect/src/detect/os/riscv.rs

@@ -135,4 +135,5 @@ pub(crate) fn imply_features(mut value: cache::Initializer) -> cache::Initialize
 }
 
 #[cfg(test)]
+#[path = "riscv/tests.rs"]
 mod tests;

sysroot/Cargo.toml

@@ -6,6 +6,8 @@ version = "0.0.0"
 edition = "2024"
 
 [lib]
+test = false
+bench = false
 # make sure this crate isn't included in public standard library docs
 doc = false
 

windows_targets/Cargo.toml

@@ -4,6 +4,11 @@ description = "A drop-in replacement for the real windows-targets crate for use
 version = "0.0.0"
 edition = "2024"
 
+[lib]
+test = false
+bench = false
+doc = false
+
 [features]
 # Enable using raw-dylib for Windows imports.
 # This will eventually be the default.