diff --git a/example/mini_core.rs b/example/mini_core.rs
index 934e4b1786f..3607b7cd944 100644
--- a/example/mini_core.rs
+++ b/example/mini_core.rs
@@ -11,7 +11,7 @@
     thread_local
 )]
 #![no_core]
-#![allow(dead_code, internal_features)]
+#![allow(dead_code, internal_features, ambiguous_wide_pointer_comparisons)]
 
 #[lang = "sized"]
 pub trait Sized {}
diff --git a/src/abi/comments.rs b/src/abi/comments.rs
index ade6968de2b..a318cae1722 100644
--- a/src/abi/comments.rs
+++ b/src/abi/comments.rs
@@ -3,7 +3,6 @@
 
 use std::borrow::Cow;
 
-use rustc_middle::mir;
 use rustc_target::abi::call::PassMode;
 
 use crate::prelude::*;
diff --git a/src/abi/mod.rs b/src/abi/mod.rs
index 0ff1473da43..2c194f6d6d3 100644
--- a/src/abi/mod.rs
+++ b/src/abi/mod.rs
@@ -6,7 +6,7 @@ mod returning;
 
 use std::borrow::Cow;
 
-use cranelift_codegen::ir::{AbiParam, SigRef};
+use cranelift_codegen::ir::SigRef;
 use cranelift_module::ModuleError;
 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc_middle::ty::layout::FnAbiOf;
diff --git a/src/analyze.rs b/src/analyze.rs
index 321612238ea..c5762638a6b 100644
--- a/src/analyze.rs
+++ b/src/analyze.rs
@@ -2,7 +2,6 @@
 
 use rustc_index::IndexVec;
 use rustc_middle::mir::StatementKind::*;
-use rustc_middle::ty::Ty;
 
 use crate::prelude::*;
 
diff --git a/src/constant.rs b/src/constant.rs
index 65f7ee6999a..9ffa006e59b 100644
--- a/src/constant.rs
+++ b/src/constant.rs
@@ -3,10 +3,9 @@
 use std::cmp::Ordering;
 
 use cranelift_module::*;
-use rustc_data_structures::fx::{FxHashMap, FxHashSet};
+use rustc_data_structures::fx::FxHashSet;
 use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags;
 use rustc_middle::mir::interpret::{read_target_uint, AllocId, GlobalAlloc, Scalar};
-use rustc_middle::mir::ConstValue;
 use rustc_middle::ty::ScalarInt;
 
 use crate::prelude::*;
diff --git a/src/inline_asm.rs b/src/inline_asm.rs
index 25d14319f57..73f4bc7c151 100644
--- a/src/inline_asm.rs
+++ b/src/inline_asm.rs
@@ -3,7 +3,6 @@
 use std::fmt::Write;
 
 use rustc_ast::ast::{InlineAsmOptions, InlineAsmTemplatePiece};
-use rustc_middle::mir::InlineAsmOperand;
 use rustc_span::sym;
 use rustc_target::asm::*;
 use target_lexicon::BinaryFormat;
diff --git a/src/intrinsics/llvm.rs b/src/intrinsics/llvm.rs
index 659e6c133ef..dbd5db87511 100644
--- a/src/intrinsics/llvm.rs
+++ b/src/intrinsics/llvm.rs
@@ -1,7 +1,5 @@
 //! Emulate LLVM intrinsics
 
-use rustc_middle::ty::GenericArgsRef;
-
 use crate::intrinsics::*;
 use crate::prelude::*;
 
diff --git a/src/intrinsics/llvm_aarch64.rs b/src/intrinsics/llvm_aarch64.rs
index ee098be1fce..e1e514dca44 100644
--- a/src/intrinsics/llvm_aarch64.rs
+++ b/src/intrinsics/llvm_aarch64.rs
@@ -1,7 +1,5 @@
 //! Emulate AArch64 LLVM intrinsics
 
-use rustc_middle::ty::GenericArgsRef;
-
 use crate::intrinsics::*;
 use crate::prelude::*;
 
diff --git a/src/intrinsics/llvm_x86.rs b/src/intrinsics/llvm_x86.rs
index 07b95b7933d..99bb5c4eae2 100644
--- a/src/intrinsics/llvm_x86.rs
+++ b/src/intrinsics/llvm_x86.rs
@@ -1,7 +1,6 @@
 //! Emulate x86 LLVM intrinsics
 
 use rustc_ast::ast::{InlineAsmOptions, InlineAsmTemplatePiece};
-use rustc_middle::ty::GenericArgsRef;
 use rustc_target::asm::*;
 
 use crate::inline_asm::{codegen_inline_asm_inner, CInlineAsmOperand};
diff --git a/src/intrinsics/simd.rs b/src/intrinsics/simd.rs
index 64d05ebaaa8..90bfac9c9e5 100644
--- a/src/intrinsics/simd.rs
+++ b/src/intrinsics/simd.rs
@@ -1,8 +1,6 @@
 //! Codegen `extern "platform-intrinsic"` intrinsics.
 
 use cranelift_codegen::ir::immediates::Offset32;
-use rustc_middle::ty::GenericArgsRef;
-use rustc_span::Symbol;
 use rustc_target::abi::Endian;
 
 use super::*;