diff --git a/Cargo.lock b/Cargo.lock
index 3a282e8931..6960c1661c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -553,7 +553,6 @@ dependencies = [
  "directories",
  "getrandom",
  "jemalloc-sys",
- "lazy_static",
  "libc",
  "libffi",
  "libloading",
diff --git a/Cargo.toml b/Cargo.toml
index de7a6de9e3..976bd08086 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -47,7 +47,6 @@ colored = "2"
 ui_test = "0.21.1"
 rustc_version = "0.4"
 regex = "1.5.5"
-lazy_static = "1.4.0"
 tempfile = "3"
 
 [package.metadata.rust-analyzer]
diff --git a/rust-version b/rust-version
index a45ecda15c..dcd7b0698a 100644
--- a/rust-version
+++ b/rust-version
@@ -1 +1 @@
-6acb9e75ebc936df737381a9d0b7a7bccd6f0b2f
+79734f1db8dbe322192dea32c0f6b80ab14c4c1d
diff --git a/src/lib.rs b/src/lib.rs
index 44727e01ea..f47c84842b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -89,8 +89,10 @@ mod shims;
 // Establish a "crate-wide prelude": we often import `crate::*`.
 
 // Make all those symbols available in the same place as our own.
+#[doc(no_inline)]
 pub use rustc_const_eval::interpret::*;
 // Resolve ambiguity.
+#[doc(no_inline)]
 pub use rustc_const_eval::interpret::{self, AllocMap, PlaceTy, Provenance as _};
 
 pub use crate::shims::env::{EnvVars, EvalContextExt as _};
diff --git a/src/machine.rs b/src/machine.rs
index 8b28687177..4dacb6db8d 100644
--- a/src/machine.rs
+++ b/src/machine.rs
@@ -380,7 +380,7 @@ impl<'mir, 'tcx: 'mir> PrimitiveLayouts<'tcx> {
         let mut_raw_ptr = Ty::new_mut_ptr(tcx, tcx.types.unit);
         let const_raw_ptr = Ty::new_imm_ptr(tcx, tcx.types.unit);
         Ok(Self {
-            unit: layout_cx.layout_of(Ty::new_unit(tcx))?,
+            unit: layout_cx.layout_of(tcx.types.unit)?,
             i8: layout_cx.layout_of(tcx.types.i8)?,
             i16: layout_cx.layout_of(tcx.types.i16)?,
             i32: layout_cx.layout_of(tcx.types.i32)?,
diff --git a/tests/ui.rs b/tests/ui.rs
index ace0da0125..efeefbe29f 100644
--- a/tests/ui.rs
+++ b/tests/ui.rs
@@ -1,6 +1,7 @@
 use std::ffi::OsString;
 use std::num::NonZeroUsize;
 use std::path::{Path, PathBuf};
+use std::sync::OnceLock;
 use std::{env, process::Command};
 
 use colored::*;
@@ -67,8 +68,8 @@ fn miri_config(target: &str, path: &str, mode: Mode, with_dependencies: bool) ->
 
     let mut config = Config {
         target: Some(target.to_owned()),
-        stderr_filters: STDERR.clone(),
-        stdout_filters: STDOUT.clone(),
+        stderr_filters: stderr_filters().into(),
+        stdout_filters: stdout_filters().into(),
         mode,
         program,
         out_dir: PathBuf::from(std::env::var_os("CARGO_TARGET_DIR").unwrap()).join("ui"),
@@ -174,15 +175,18 @@ fn run_tests(
 }
 
 macro_rules! regexes {
-    ($name:ident: $($regex:expr => $replacement:expr,)*) => {lazy_static::lazy_static! {
-        static ref $name: Vec<(Match, &'static [u8])> = vec![
-            $((Regex::new($regex).unwrap().into(), $replacement.as_bytes()),)*
-        ];
-    }};
+    ($name:ident: $($regex:expr => $replacement:expr,)*) => {
+        fn $name() -> &'static [(Match, &'static [u8])] {
+            static S: OnceLock<Vec<(Match, &'static [u8])>> = OnceLock::new();
+            S.get_or_init(|| vec![
+                $((Regex::new($regex).unwrap().into(), $replacement.as_bytes()),)*
+            ])
+        }
+    };
 }
 
 regexes! {
-    STDOUT:
+    stdout_filters:
     // Windows file paths
     r"\\"                           => "/",
     // erase borrow tags
@@ -191,7 +195,7 @@ regexes! {
 }
 
 regexes! {
-    STDERR:
+    stderr_filters:
     // erase line and column info
     r"\.rs:[0-9]+:[0-9]+(: [0-9]+:[0-9]+)?" => ".rs:LL:CC",
     // erase alloc ids