diff --git a/Cargo.lock b/Cargo.lock
index 942f8f43935b..6d252ca8c82c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -6438,6 +6438,10 @@ version = "0.5.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e9df38ee2d2c3c5948ea468a8406ff0db0b29ae1ffde1bcf20ef305bcc95c51"
 
+[[package]]
+name = "x"
+version = "0.1.1"
+
 [[package]]
 name = "xattr"
 version = "1.4.0"
diff --git a/Cargo.toml b/Cargo.toml
index 915ec2e00ca4..21f0e84c4f67 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -45,6 +45,7 @@ members = [
   "src/tools/coverage-dump",
   "src/tools/wasm-component-ld",
   "src/tools/features-status-dump",
+  "src/tools/x",
 ]
 
 exclude = [
@@ -55,11 +56,6 @@ exclude = [
   "tests/rustdoc-gui",
   # HACK(eddyb) This hardcodes the fact that our CI uses `/checkout/obj`.
   "obj",
-  # The `x` binary is a thin wrapper that calls `x.py`, which initializes
-  # submodules, before which workspace members cannot be invoked because
-  # not all `Cargo.toml` files are available, so we exclude the `x` binary,
-  # so it can be invoked before the current checkout is set up.
-  "src/tools/x",
 ]
 
 [profile.release.package.rustc-rayon-core]
diff --git a/src/tools/tidy/src/deps.rs b/src/tools/tidy/src/deps.rs
index 569d3c67b04b..81c55ecaa7a2 100644
--- a/src/tools/tidy/src/deps.rs
+++ b/src/tools/tidy/src/deps.rs
@@ -81,7 +81,6 @@ pub(crate) const WORKSPACES: &[(&str, ExceptionList, Option<(&[&str], &[&str])>,
     ("src/tools/rust-analyzer", EXCEPTIONS_RUST_ANALYZER, None, &[]),
     ("src/tools/rustbook", EXCEPTIONS_RUSTBOOK, None, &["src/doc/book", "src/doc/reference"]),
     ("src/tools/rustc-perf", EXCEPTIONS_RUSTC_PERF, None, &["src/tools/rustc-perf"]),
-    ("src/tools/x", &[], None, &[]),
     // tidy-alphabetical-end
 ];
 
diff --git a/src/tools/x/Cargo.lock b/src/tools/x/Cargo.lock
deleted file mode 100644
index 09e5c7507490..000000000000
--- a/src/tools/x/Cargo.lock
+++ /dev/null
@@ -1,7 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "x"
-version = "0.1.1"