diff --git a/Cargo.lock b/Cargo.lock
index 90c8a59303c64..696b797e612f9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -879,7 +879,6 @@ dependencies = [
  "shim_utils",
  "tracing",
  "tracing-subscriber",
- "unified-diff",
  "walkdir",
  "windows 0.61.3",
 ]
@@ -6208,15 +6207,6 @@ version = "0.2.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
 
-[[package]]
-name = "unified-diff"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "496a3d395ed0c30f411ceace4a91f7d93b148fb5a9b383d5d4cff7850f048d5f"
-dependencies = [
- "diff",
-]
-
 [[package]]
 name = "unit-prefix"
 version = "0.5.2"
diff --git a/compiler/rustc_thread_pool/Cargo.toml b/compiler/rustc_thread_pool/Cargo.toml
index c92984470b7ae..c7d04da428b0d 100644
--- a/compiler/rustc_thread_pool/Cargo.toml
+++ b/compiler/rustc_thread_pool/Cargo.toml
@@ -8,7 +8,6 @@ authors = [
 description = "Core APIs for Rayon - fork for rustc"
 license = "MIT OR Apache-2.0"
 edition = "2021"
-readme = "README.md"
 keywords = ["parallel", "thread", "concurrency", "join", "performance"]
 categories = ["concurrency"]
 
diff --git a/src/tools/compiletest/Cargo.toml b/src/tools/compiletest/Cargo.toml
index 09c19be3dafd6..6f8c8eed07d18 100644
--- a/src/tools/compiletest/Cargo.toml
+++ b/src/tools/compiletest/Cargo.toml
@@ -34,7 +34,6 @@ serde_json = "1.0"
 shim_utils = { path = "../../shim_utils" }
 tracing = "0.1"
 tracing-subscriber = { version = "0.3.3", default-features = false, features = ["ansi", "env-filter", "fmt", "parking_lot", "smallvec"] }
-unified-diff = "0.2.1"
 walkdir = "2"
 # tidy-alphabetical-end