diff --git a/build_system/tests.rs b/build_system/tests.rs
index b55187aa3b4c..261948a69713 100644
--- a/build_system/tests.rs
+++ b/build_system/tests.rs
@@ -94,13 +94,15 @@ const BASE_SYSROOT_SUITE: &[TestCase] = &[
     TestCase::build_bin_and_run("aot.issue-72793", "example/issue-72793.rs", &[]),
 ];
 
+// FIXME(rust-random/rand#1293): Newer rand versions fail to test on Windows. Update once this is
+// fixed.
 pub(crate) static RAND_REPO: GitRepo =
-    GitRepo::github("rust-random", "rand", "0f933f9c7176e53b2a3c7952ded484e1783f0bf1", "rand");
+    GitRepo::github("rust-random", "rand", "50b9a447410860af8d6db9a208c3576886955874", "rand");
 
 pub(crate) static RAND: CargoProject = CargoProject::new(&RAND_REPO.source_dir(), "rand");
 
 pub(crate) static REGEX_REPO: GitRepo =
-    GitRepo::github("rust-lang", "regex", "341f207c1071f7290e3f228c710817c280c8dca1", "regex");
+    GitRepo::github("rust-lang", "regex", "a9b2e02352db92ce1f6e5b7ecd41b8bbffbe161a", "regex");
 
 pub(crate) static REGEX: CargoProject = CargoProject::new(&REGEX_REPO.source_dir(), "regex");
 
@@ -123,12 +125,11 @@ const EXTENDED_SYSROOT_SUITE: &[TestCase] = &[
         RAND.clean(&runner.dirs);
 
         if runner.is_native {
-            eprintln!("[TEST] rust-random/rand");
             let mut test_cmd = RAND.test(&runner.target_compiler, &runner.dirs);
             test_cmd.arg("--workspace").arg("--").arg("-q");
             spawn_and_wait(test_cmd);
         } else {
-            eprintln!("[AOT] rust-random/rand");
+            eprintln!("Cross-Compiling: Not running tests");
             let mut build_cmd = RAND.build(&runner.target_compiler, &runner.dirs);
             build_cmd.arg("--workspace").arg("--tests");
             spawn_and_wait(build_cmd);
@@ -151,18 +152,13 @@ const EXTENDED_SYSROOT_SUITE: &[TestCase] = &[
     TestCase::custom("test.regex-shootout-regex-dna", &|runner| {
         REGEX.clean(&runner.dirs);
 
-        // newer aho_corasick versions throw a deprecation warning
-        let lint_rust_flags = format!("{} --cap-lints warn", runner.target_compiler.rustflags);
-
         let mut build_cmd = REGEX.build(&runner.target_compiler, &runner.dirs);
         build_cmd.arg("--example").arg("shootout-regex-dna");
-        build_cmd.env("RUSTFLAGS", lint_rust_flags.clone());
         spawn_and_wait(build_cmd);
 
         if runner.is_native {
             let mut run_cmd = REGEX.run(&runner.target_compiler, &runner.dirs);
             run_cmd.arg("--example").arg("shootout-regex-dna");
-            run_cmd.env("RUSTFLAGS", lint_rust_flags);
 
             let input = fs::read_to_string(
                 REGEX.source_dir(&runner.dirs).join("examples").join("regexdna-input.txt"),
@@ -174,13 +170,6 @@ const EXTENDED_SYSROOT_SUITE: &[TestCase] = &[
             .unwrap();
 
             let output = spawn_and_wait_with_input(run_cmd, input);
-            // Make sure `[codegen mono items] start` doesn't poison the diff
-            let output = output
-                .lines()
-                .filter(|line| !line.contains("codegen mono items"))
-                .chain(Some("")) // This just adds the trailing newline
-                .collect::<Vec<&str>>()
-                .join("\r\n");
 
             let output_matches = expected.lines().eq(output.lines());
             if !output_matches {
@@ -195,27 +184,14 @@ const EXTENDED_SYSROOT_SUITE: &[TestCase] = &[
     TestCase::custom("test.regex", &|runner| {
         REGEX.clean(&runner.dirs);
 
-        // newer aho_corasick versions throw a deprecation warning
-        let lint_rust_flags = format!("{} --cap-lints warn", runner.target_compiler.rustflags);
-
         if runner.is_native {
             let mut run_cmd = REGEX.test(&runner.target_compiler, &runner.dirs);
-            run_cmd.args([
-                "--tests",
-                "--",
-                "--exclude-should-panic",
-                "--test-threads",
-                "1",
-                "-Zunstable-options",
-                "-q",
-            ]);
-            run_cmd.env("RUSTFLAGS", lint_rust_flags);
+            run_cmd.args(["--workspace", "--", "-q"]);
             spawn_and_wait(run_cmd);
         } else {
             eprintln!("Cross-Compiling: Not running tests");
             let mut build_cmd = REGEX.build(&runner.target_compiler, &runner.dirs);
             build_cmd.arg("--tests");
-            build_cmd.env("RUSTFLAGS", lint_rust_flags.clone());
             spawn_and_wait(build_cmd);
         }
     }),
diff --git a/patches/0003-rand-Disable-rand-tests-on-mingw.patch b/patches/0003-rand-Disable-rand-tests-on-mingw.patch
index d8775e2d022a..eb452c5cd377 100644
--- a/patches/0003-rand-Disable-rand-tests-on-mingw.patch
+++ b/patches/0003-rand-Disable-rand-tests-on-mingw.patch
@@ -19,8 +19,8 @@ index 217899e..9cedeb7 100644
 +    // This is broken on x86_64-pc-windows-gnu presumably due to a broken powf implementation
 +    #[cfg_attr(all(target_os = "windows", target_env = "gnu"), ignore)]
      fn value_stability() {
-         fn test_samples<F: Float + core::fmt::Debug, D: Distribution<F>>(
-             distr: D, zero: F, expected: &[F],
+         fn test_samples<F: Float + Debug + Display + LowerExp, D: Distribution<F>>(
+             distr: D, thresh: F, expected: &[F],
 diff --git a/rand_distr/tests/value_stability.rs b/rand_distr/tests/value_stability.rs
 index 192ba74..0101ace 100644
 --- a/rand_distr/tests/value_stability.rs