diff --git a/Cargo.toml b/Cargo.toml
index 93a1e71ecab..e60aa472846 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "clippy"
-version = "0.1.50"
+version = "0.1.51"
 authors = [
 	"Manish Goregaokar <manishsmail@gmail.com>",
 	"Andre Bogus <bogusandre@gmail.com>",
diff --git a/clippy_lints/Cargo.toml b/clippy_lints/Cargo.toml
index 7e3eaf3ae74..a9516560a61 100644
--- a/clippy_lints/Cargo.toml
+++ b/clippy_lints/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "clippy_lints"
 # begin automatic update
-version = "0.1.50"
+version = "0.1.51"
 # end automatic update
 authors = [
 	"Manish Goregaokar <manishsmail@gmail.com>",
diff --git a/clippy_lints/src/lifetimes.rs b/clippy_lints/src/lifetimes.rs
index 4d737b3f49b..e84c8b4e5b3 100644
--- a/clippy_lints/src/lifetimes.rs
+++ b/clippy_lints/src/lifetimes.rs
@@ -501,7 +501,7 @@ impl<'tcx> Visitor<'tcx> for BodyLifetimeChecker {
 
     // for lifetimes as parameters of generics
     fn visit_lifetime(&mut self, lifetime: &'tcx Lifetime) {
-        if lifetime.name.ident().name != kw::Invalid && lifetime.name.ident().name != kw::StaticLifetime {
+        if lifetime.name.ident().name != kw::Empty && lifetime.name.ident().name != kw::StaticLifetime {
             self.lifetimes_used_in_body = true;
         }
     }
diff --git a/clippy_lints/src/utils/ast_utils.rs b/clippy_lints/src/utils/ast_utils.rs
index f0267e4c792..5aed676fceb 100644
--- a/clippy_lints/src/utils/ast_utils.rs
+++ b/clippy_lints/src/utils/ast_utils.rs
@@ -407,6 +407,10 @@ pub fn eq_use_tree_kind(l: &UseTreeKind, r: &UseTreeKind) -> bool {
     }
 }
 
+pub fn eq_anon_const(l: &AnonConst, r: &AnonConst) -> bool {
+    eq_expr(&l.value, &r.value)
+}
+
 pub fn eq_defaultness(l: Defaultness, r: Defaultness) -> bool {
     matches!(
         (l, r),
@@ -497,7 +501,18 @@ pub fn eq_generic_param(l: &GenericParam, r: &GenericParam) -> bool {
         && match (&l.kind, &r.kind) {
             (Lifetime, Lifetime) => true,
             (Type { default: l }, Type { default: r }) => both(l, r, |l, r| eq_ty(l, r)),
-            (Const { ty: l, kw_span: _ }, Const { ty: r, kw_span: _ }) => eq_ty(l, r),
+            (
+                Const {
+                    ty: lt,
+                    kw_span: _,
+                    default: ld,
+                },
+                Const {
+                    ty: rt,
+                    kw_span: _,
+                    default: rd,
+                },
+            ) => eq_ty(lt, rt) && both(ld, rd, |ld, rd| eq_anon_const(ld, rd)),
             _ => false,
         }
         && over(&l.attrs, &r.attrs, |l, r| eq_attr(l, r))
diff --git a/rust-toolchain b/rust-toolchain
index d2e84132f4e..c579beeae89 100644
--- a/rust-toolchain
+++ b/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2020-12-20"
+channel = "nightly-2021-01-02"
 components = ["llvm-tools-preview", "rustc-dev", "rust-src", "rustfmt"]
diff --git a/tests/ui/match_expr_like_matches_macro.fixed b/tests/ui/match_expr_like_matches_macro.fixed
index 7f4ebf56673..84981a52597 100644
--- a/tests/ui/match_expr_like_matches_macro.fixed
+++ b/tests/ui/match_expr_like_matches_macro.fixed
@@ -39,7 +39,7 @@ fn main() {
         B(i32),
         C,
         D,
-    };
+    }
     let x = E::A(2);
     {
         // lint
diff --git a/tests/ui/match_expr_like_matches_macro.rs b/tests/ui/match_expr_like_matches_macro.rs
index aee56dd4a5e..94c7c3cadac 100644
--- a/tests/ui/match_expr_like_matches_macro.rs
+++ b/tests/ui/match_expr_like_matches_macro.rs
@@ -51,7 +51,7 @@ fn main() {
         B(i32),
         C,
         D,
-    };
+    }
     let x = E::A(2);
     {
         // lint
diff --git a/tests/versioncheck.rs b/tests/versioncheck.rs
index ec54e11dc06..589b19f68f7 100644
--- a/tests/versioncheck.rs
+++ b/tests/versioncheck.rs
@@ -28,17 +28,17 @@ fn check_that_clippy_has_the_same_major_version_as_rustc() {
     let clippy_minor = clippy_version.minor;
     let clippy_patch = clippy_version.patch;
 
-    // get the rustc version from cargo
+    // get the rustc version
     // this way the rust-toolchain file version is honored
     let rustc_version = String::from_utf8(
-        std::process::Command::new("cargo")
+        std::process::Command::new("rustc")
             .arg("--version")
             .output()
-            .expect("failed to run 'cargo --version'")
+            .expect("failed to run `rustc --version`")
             .stdout,
     )
     .unwrap();
-    // extract "1 50 0" from "cargo 1.50.0-nightly (a3c2627fb 2020-12-14)"
+    // extract "1 XX 0" from "rustc 1.XX.0-nightly (<commit> <date>)"
     let vsplit: Vec<&str> = rustc_version
         .split(' ')
         .nth(1)
@@ -50,9 +50,7 @@ fn check_that_clippy_has_the_same_major_version_as_rustc() {
         .collect();
     match vsplit.as_slice() {
         [rustc_major, rustc_minor, _rustc_patch] => {
-            // clippy 0.1.50 should correspond to rustc 1.50.0
-            dbg!(&rustc_version);
-            dbg!(&clippy_version);
+            // clippy 0.1.XX should correspond to rustc 1.XX.0
             assert_eq!(clippy_major, 0); // this will probably stay the same for a long time
             assert_eq!(
                 clippy_minor.to_string(),
@@ -68,8 +66,7 @@ fn check_that_clippy_has_the_same_major_version_as_rustc() {
             // we don't want our tests failing suddenly
         },
         _ => {
-            dbg!(vsplit);
-            panic!("Failed to parse rustc version");
+            panic!("Failed to parse rustc version: {:?}", vsplit);
         },
     };
 }