diff --git a/src/bootstrap/src/core/build_steps/vendor.rs b/src/bootstrap/src/core/build_steps/vendor.rs
index 984c70955d7da..0caeb328811aa 100644
--- a/src/bootstrap/src/core/build_steps/vendor.rs
+++ b/src/bootstrap/src/core/build_steps/vendor.rs
@@ -103,6 +103,7 @@ impl Step for Vendor {
         // Will read the libstd Cargo.toml
         // which uses the unstable `public-dependency` feature.
         cmd.env("RUSTC_BOOTSTRAP", "1");
+        cmd.env("RUSTC", &builder.initial_rustc);
 
         cmd.current_dir(self.root_dir).arg(&self.output_dir);
 
diff --git a/src/doc/book b/src/doc/book
index 4a01a9182496f..81a976a237f84 160000
--- a/src/doc/book
+++ b/src/doc/book
@@ -1 +1 @@
-Subproject commit 4a01a9182496f807aaa5f72d93a25ce18bcbe105
+Subproject commit 81a976a237f84b8392c4ce1bd5fd076eb757a2eb
diff --git a/src/doc/edition-guide b/src/doc/edition-guide
index daa4b763cd848..1e27e5e6d5133 160000
--- a/src/doc/edition-guide
+++ b/src/doc/edition-guide
@@ -1 +1 @@
-Subproject commit daa4b763cd848f986813b5cf8069e1649f7147af
+Subproject commit 1e27e5e6d5133ae4612f5cc195c15fc8d51b1c9c
diff --git a/src/doc/nomicon b/src/doc/nomicon
index 8f5c7322b65d0..b4448fa406a6d 160000
--- a/src/doc/nomicon
+++ b/src/doc/nomicon
@@ -1 +1 @@
-Subproject commit 8f5c7322b65d079aa5b242eb10d89a98e12471e1
+Subproject commit b4448fa406a6dccde62d1e2f34f70fc51814cdcc
diff --git a/src/doc/reference b/src/doc/reference
index 615b4cec60c26..dda31c85f2ef2 160000
--- a/src/doc/reference
+++ b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 615b4cec60c269cfc105d511c93287620032d5b0
+Subproject commit dda31c85f2ef2e5d2f0f2f643c9231690a30a626
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
index 66543bbc5b7db..6f69823c28ae8 160000
--- a/src/doc/rust-by-example
+++ b/src/doc/rust-by-example
@@ -1 +1 @@
-Subproject commit 66543bbc5b7dbd4e679092c07ae06ba6c73fd912
+Subproject commit 6f69823c28ae8d929d6c815181c73d3e99ef16d3