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-rw-r--r--src/bootstrap/bootstrap.py29
-rw-r--r--src/stage0.txt11
-rw-r--r--src/test/compile-fail/consts/issue-55878.rs2
-rw-r--r--src/test/ui/huge-array-simple-32.stderr2
-rw-r--r--src/test/ui/huge-array-simple-64.stderr2
-rw-r--r--src/test/ui/huge-array.rs2
-rw-r--r--src/test/ui/huge-array.stderr2
-rw-r--r--src/test/ui/huge-enum.rs2
-rw-r--r--src/test/ui/huge-enum.stderr2
-rw-r--r--src/test/ui/huge-struct.rs2
-rw-r--r--src/test/ui/huge-struct.stderr2
-rw-r--r--src/test/ui/issues/issue-15919-32.stderr2
-rw-r--r--src/test/ui/issues/issue-15919-64.stderr2
-rw-r--r--src/test/ui/issues/issue-17913.stderr2
-rw-r--r--src/test/ui/issues/issue-56762.rs4
-rw-r--r--src/test/ui/issues/issue-56762.stderr4
-rw-r--r--src/test/ui/layout/big-type-no-err.rs13
-rw-r--r--src/test/ui/lint/expansion-time.rs10
-rw-r--r--src/test/ui/lint/expansion-time.stderr2
-rw-r--r--src/test/ui/lint/issue-69485-var-size-diffs-too-large.rs2
-rw-r--r--src/test/ui/lint/issue-69485-var-size-diffs-too-large.stderr2
-rw-r--r--src/tools/clippy/clippy_lints/src/assertions_on_constants.rs5
-rw-r--r--src/tools/clippy/clippy_lints/src/attrs.rs4
-rw-r--r--src/tools/clippy/clippy_lints/src/fallible_impl_from.rs9
-rw-r--r--src/tools/clippy/clippy_lints/src/implicit_return.rs9
-rw-r--r--src/tools/clippy/clippy_lints/src/panic_unimplemented.rs44
-rw-r--r--src/tools/clippy/clippy_lints/src/utils/mod.rs20
-rw-r--r--src/tools/clippy/clippy_lints/src/utils/paths.rs8
-rw-r--r--src/tools/clippy/tests/ui/panicking_macros.rs11
-rw-r--r--src/tools/clippy/tests/ui/panicking_macros.stderr50
30 files changed, 157 insertions, 104 deletions
diff --git a/src/bootstrap/bootstrap.py b/src/bootstrap/bootstrap.py
index 54d0a23dec5..4fb58034ce2 100644
--- a/src/bootstrap/bootstrap.py
+++ b/src/bootstrap/bootstrap.py
@@ -360,7 +360,6 @@ def output(filepath):
 class RustBuild(object):
     """Provide all the methods required to build Rust"""
     def __init__(self):
-        self.cargo_channel = ''
         self.date = ''
         self._download_url = ''
         self.rustc_channel = ''
@@ -387,7 +386,6 @@ class RustBuild(object):
         will move all the content to the right place.
         """
         rustc_channel = self.rustc_channel
-        cargo_channel = self.cargo_channel
         rustfmt_channel = self.rustfmt_channel
 
         if self.rustc().startswith(self.bin_root()) and \
@@ -400,12 +398,15 @@ class RustBuild(object):
                 rustc_channel, self.build, tarball_suffix)
             pattern = "rust-std-{}".format(self.build)
             self._download_stage0_helper(filename, pattern, tarball_suffix)
-
             filename = "rustc-{}-{}{}".format(rustc_channel, self.build,
                                               tarball_suffix)
             self._download_stage0_helper(filename, "rustc", tarball_suffix)
+            filename = "cargo-{}-{}{}".format(rustc_channel, self.build,
+                                              tarball_suffix)
+            self._download_stage0_helper(filename, "cargo", tarball_suffix)
             self.fix_bin_or_dylib("{}/bin/rustc".format(self.bin_root()))
             self.fix_bin_or_dylib("{}/bin/rustdoc".format(self.bin_root()))
+            self.fix_bin_or_dylib("{}/bin/cargo".format(self.bin_root()))
             lib_dir = "{}/lib".format(self.bin_root())
             for lib in os.listdir(lib_dir):
                 if lib.endswith(".so"):
@@ -413,17 +414,6 @@ class RustBuild(object):
             with output(self.rustc_stamp()) as rust_stamp:
                 rust_stamp.write(self.date)
 
-        if self.cargo().startswith(self.bin_root()) and \
-                (not os.path.exists(self.cargo()) or
-                 self.program_out_of_date(self.cargo_stamp())):
-            tarball_suffix = '.tar.xz' if support_xz() else '.tar.gz'
-            filename = "cargo-{}-{}{}".format(cargo_channel, self.build,
-                                              tarball_suffix)
-            self._download_stage0_helper(filename, "cargo", tarball_suffix)
-            self.fix_bin_or_dylib("{}/bin/cargo".format(self.bin_root()))
-            with output(self.cargo_stamp()) as cargo_stamp:
-                cargo_stamp.write(self.date)
-
         if self.rustfmt() and self.rustfmt().startswith(self.bin_root()) and (
             not os.path.exists(self.rustfmt())
             or self.program_out_of_date(self.rustfmt_stamp(), self.rustfmt_channel)
@@ -601,16 +591,6 @@ class RustBuild(object):
         """
         return os.path.join(self.bin_root(), '.rustc-stamp')
 
-    def cargo_stamp(self):
-        """Return the path for .cargo-stamp
-
-        >>> rb = RustBuild()
-        >>> rb.build_dir = "build"
-        >>> rb.cargo_stamp() == os.path.join("build", "stage0", ".cargo-stamp")
-        True
-        """
-        return os.path.join(self.bin_root(), '.cargo-stamp')
-
     def rustfmt_stamp(self):
         """Return the path for .rustfmt-stamp
 
@@ -1056,7 +1036,6 @@ def bootstrap(help_triggered):
     data = stage0_data(build.rust_root)
     build.date = data['date']
     build.rustc_channel = data['rustc']
-    build.cargo_channel = data['cargo']
 
     if "rustfmt" in data:
         build.rustfmt_channel = data['rustfmt']
diff --git a/src/stage0.txt b/src/stage0.txt
index 9eaa58dd438..dae9d219b7b 100644
--- a/src/stage0.txt
+++ b/src/stage0.txt
@@ -1,6 +1,5 @@
 # This file describes the stage0 compiler that's used to then bootstrap the Rust
-# compiler itself. For the rustbuild build system, this also describes the
-# relevant Cargo revision that we're using.
+# compiler itself.
 #
 # Currently Rust always bootstraps from the previous stable release, and in our
 # train model this means that the master branch bootstraps from beta, beta
@@ -8,13 +7,13 @@
 # release.
 #
 # If you're looking at this file on the master branch, you'll likely see that
-# rustc and cargo are configured to `beta`, whereas if you're looking at a
-# source tarball for a stable release you'll likely see `1.x.0` for rustc and
-# `0.(x+1).0` for Cargo where they were released on `date`.
+# rustc is configured to `beta`, whereas if you're looking at a source tarball
+# for a stable release you'll likely see `1.x.0` for rustc, with the previous
+# stable release's version number. `date` is the date where the release we're
+# bootstrapping off was released.
 
 date: 2020-10-16
 rustc: beta
-cargo: beta
 
 # We use a nightly rustfmt to format the source because it solves some
 # bootstrapping issues with use of new syntax in this repo. If you're looking at
diff --git a/src/test/compile-fail/consts/issue-55878.rs b/src/test/compile-fail/consts/issue-55878.rs
index aa1dd58d246..541befa7b13 100644
--- a/src/test/compile-fail/consts/issue-55878.rs
+++ b/src/test/compile-fail/consts/issue-55878.rs
@@ -1,7 +1,7 @@
 // normalize-stderr-64bit "18446744073709551615" -> "SIZE"
 // normalize-stderr-32bit "4294967295" -> "SIZE"
 
-// error-pattern: is too big for the current architecture
+// error-pattern: are too big for the current architecture
 fn main() {
     println!("Size: {}", std::mem::size_of::<[u8; std::u64::MAX as usize]>());
 }
diff --git a/src/test/ui/huge-array-simple-32.stderr b/src/test/ui/huge-array-simple-32.stderr
index d734a9689e0..31e120df626 100644
--- a/src/test/ui/huge-array-simple-32.stderr
+++ b/src/test/ui/huge-array-simple-32.stderr
@@ -1,4 +1,4 @@
-error: the type `[u8; 2147516416]` is too big for the current architecture
+error: values of the type `[u8; 2147516416]` are too big for the current architecture
   --> $DIR/huge-array-simple-32.rs:10:9
    |
 LL |     let _fat: [u8; (1<<31)+(1<<15)] =
diff --git a/src/test/ui/huge-array-simple-64.stderr b/src/test/ui/huge-array-simple-64.stderr
index 791baa84687..c5d3fe85d0d 100644
--- a/src/test/ui/huge-array-simple-64.stderr
+++ b/src/test/ui/huge-array-simple-64.stderr
@@ -1,4 +1,4 @@
-error: the type `[u8; 2305843011361177600]` is too big for the current architecture
+error: values of the type `[u8; 2305843011361177600]` are too big for the current architecture
   --> $DIR/huge-array-simple-64.rs:10:9
    |
 LL |     let _fat: [u8; (1<<61)+(1<<31)] =
diff --git a/src/test/ui/huge-array.rs b/src/test/ui/huge-array.rs
index 846380586a0..3070801f865 100644
--- a/src/test/ui/huge-array.rs
+++ b/src/test/ui/huge-array.rs
@@ -6,7 +6,7 @@
 
 fn generic<T: Copy>(t: T) {
     let s: [T; 1518600000] = [t; 1518600000];
-    //~^ ERROR the type `[[u8; 1518599999]; 1518600000]` is too big for the current architecture
+    //~^ ERROR values of the type `[[u8; 1518599999]; 1518600000]` are too big
 }
 
 fn main() {
diff --git a/src/test/ui/huge-array.stderr b/src/test/ui/huge-array.stderr
index 23d9e87ae00..817458b73e4 100644
--- a/src/test/ui/huge-array.stderr
+++ b/src/test/ui/huge-array.stderr
@@ -1,4 +1,4 @@
-error: the type `[[u8; 1518599999]; 1518600000]` is too big for the current architecture
+error: values of the type `[[u8; 1518599999]; 1518600000]` are too big for the current architecture
   --> $DIR/huge-array.rs:8:9
    |
 LL |     let s: [T; 1518600000] = [t; 1518600000];
diff --git a/src/test/ui/huge-enum.rs b/src/test/ui/huge-enum.rs
index 8a713c3a26e..39ea6e11b1f 100644
--- a/src/test/ui/huge-enum.rs
+++ b/src/test/ui/huge-enum.rs
@@ -14,5 +14,5 @@ type BIG = Option<[u32; (1<<45)-1]>;
 
 fn main() {
     let big: BIG = None;
-    //~^ ERROR is too big for the current architecture
+    //~^ ERROR are too big for the current architecture
 }
diff --git a/src/test/ui/huge-enum.stderr b/src/test/ui/huge-enum.stderr
index a069c37b80a..a1456e1a8ab 100644
--- a/src/test/ui/huge-enum.stderr
+++ b/src/test/ui/huge-enum.stderr
@@ -1,4 +1,4 @@
-error: the type `Option<TYPE>` is too big for the current architecture
+error: values of the type `Option<TYPE>` are too big for the current architecture
   --> $DIR/huge-enum.rs:16:9
    |
 LL |     let big: BIG = None;
diff --git a/src/test/ui/huge-struct.rs b/src/test/ui/huge-struct.rs
index 71169a11047..02f38d860b4 100644
--- a/src/test/ui/huge-struct.rs
+++ b/src/test/ui/huge-struct.rs
@@ -48,6 +48,6 @@ struct S1M<T> { val: S1k<S1k<T>> }
 
 fn main() {
     let fat: Option<S1M<S1M<S1M<u32>>>> = None;
-    //~^ ERROR is too big for the current architecture
+    //~^ ERROR are too big for the current architecture
 
 }
diff --git a/src/test/ui/huge-struct.stderr b/src/test/ui/huge-struct.stderr
index 72e32a8593b..f0ee88e5955 100644
--- a/src/test/ui/huge-struct.stderr
+++ b/src/test/ui/huge-struct.stderr
@@ -1,4 +1,4 @@
-error: the type `SXX<SXX<SXX<u32>>>` is too big for the current architecture
+error: values of the type `SXX<SXX<SXX<u32>>>` are too big for the current architecture
   --> $DIR/huge-struct.rs:50:9
    |
 LL |     let fat: Option<SXX<SXX<SXX<u32>>>> = None;
diff --git a/src/test/ui/issues/issue-15919-32.stderr b/src/test/ui/issues/issue-15919-32.stderr
index 8411313fc81..133637f9a05 100644
--- a/src/test/ui/issues/issue-15919-32.stderr
+++ b/src/test/ui/issues/issue-15919-32.stderr
@@ -1,4 +1,4 @@
-error: the type `[usize; 4294967295]` is too big for the current architecture
+error: values of the type `[usize; 4294967295]` are too big for the current architecture
   --> $DIR/issue-15919-32.rs:9:9
    |
 LL |     let x = [0usize; 0xffff_ffff];
diff --git a/src/test/ui/issues/issue-15919-64.stderr b/src/test/ui/issues/issue-15919-64.stderr
index f624c96ce84..193b823035c 100644
--- a/src/test/ui/issues/issue-15919-64.stderr
+++ b/src/test/ui/issues/issue-15919-64.stderr
@@ -1,4 +1,4 @@
-error: the type `[usize; 18446744073709551615]` is too big for the current architecture
+error: values of the type `[usize; 18446744073709551615]` are too big for the current architecture
   --> $DIR/issue-15919-64.rs:9:9
    |
 LL |     let x = [0usize; 0xffff_ffff_ffff_ffff];
diff --git a/src/test/ui/issues/issue-17913.stderr b/src/test/ui/issues/issue-17913.stderr
index ae388c4d491..9a6431d4470 100644
--- a/src/test/ui/issues/issue-17913.stderr
+++ b/src/test/ui/issues/issue-17913.stderr
@@ -1,4 +1,4 @@
-error: the type `[&usize; N]` is too big for the current architecture
+error: values of the type `[&usize; N]` are too big for the current architecture
 
 error: aborting due to previous error
 
diff --git a/src/test/ui/issues/issue-56762.rs b/src/test/ui/issues/issue-56762.rs
index 5ba5b9847d0..fb0a270f18b 100644
--- a/src/test/ui/issues/issue-56762.rs
+++ b/src/test/ui/issues/issue-56762.rs
@@ -17,8 +17,8 @@ impl TooBigArray {
 }
 
 static MY_TOO_BIG_ARRAY_1: TooBigArray = TooBigArray::new();
-//~^ ERROR the type `[u8; 2305843009213693951]` is too big for the current architecture
+//~^ ERROR values of the type `[u8; 2305843009213693951]` are too big
 static MY_TOO_BIG_ARRAY_2: [u8; HUGE_SIZE] = [0x00; HUGE_SIZE];
-//~^ ERROR the type `[u8; 2305843009213693951]` is too big for the current architecture
+//~^ ERROR values of the type `[u8; 2305843009213693951]` are too big
 
 fn main() { }
diff --git a/src/test/ui/issues/issue-56762.stderr b/src/test/ui/issues/issue-56762.stderr
index 69626d4bc7a..f26ef280b20 100644
--- a/src/test/ui/issues/issue-56762.stderr
+++ b/src/test/ui/issues/issue-56762.stderr
@@ -1,10 +1,10 @@
-error[E0080]: the type `[u8; 2305843009213693951]` is too big for the current architecture
+error[E0080]: values of the type `[u8; 2305843009213693951]` are too big for the current architecture
   --> $DIR/issue-56762.rs:19:1
    |
 LL | static MY_TOO_BIG_ARRAY_1: TooBigArray = TooBigArray::new();
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error[E0080]: the type `[u8; 2305843009213693951]` is too big for the current architecture
+error[E0080]: values of the type `[u8; 2305843009213693951]` are too big for the current architecture
   --> $DIR/issue-56762.rs:21:1
    |
 LL | static MY_TOO_BIG_ARRAY_2: [u8; HUGE_SIZE] = [0x00; HUGE_SIZE];
diff --git a/src/test/ui/layout/big-type-no-err.rs b/src/test/ui/layout/big-type-no-err.rs
new file mode 100644
index 00000000000..af8191a9cb9
--- /dev/null
+++ b/src/test/ui/layout/big-type-no-err.rs
@@ -0,0 +1,13 @@
+// Enormous types are allowed if they are never actually instantiated.
+// run-pass
+trait Foo {
+    type Assoc;
+}
+
+impl Foo for [u16; usize::MAX] {
+    type Assoc = u32;
+}
+
+fn main() {
+    let _a: Option<<[u16; usize::MAX] as Foo>::Assoc> = None;
+}
diff --git a/src/test/ui/lint/expansion-time.rs b/src/test/ui/lint/expansion-time.rs
index c98ecc980dd..a9c7ac363b0 100644
--- a/src/test/ui/lint/expansion-time.rs
+++ b/src/test/ui/lint/expansion-time.rs
@@ -12,6 +12,16 @@ mod benches {
     fn foo() {}
 }
 
+#[deprecated = "reason"]
+macro_rules! deprecated {
+    () => {}
+}
+
+#[allow(deprecated)]
+mod deprecated {
+    deprecated!(); // No warning
+}
+
 #[warn(incomplete_include)]
 fn main() {
     // WARN see in the stderr file, the warning points to the included file.
diff --git a/src/test/ui/lint/expansion-time.stderr b/src/test/ui/lint/expansion-time.stderr
index bc48d64e7e6..24e2733064e 100644
--- a/src/test/ui/lint/expansion-time.stderr
+++ b/src/test/ui/lint/expansion-time.stderr
@@ -33,7 +33,7 @@ LL | 2
    | ^
    |
 note: the lint level is defined here
-  --> $DIR/expansion-time.rs:15:8
+  --> $DIR/expansion-time.rs:25:8
    |
 LL | #[warn(incomplete_include)]
    |        ^^^^^^^^^^^^^^^^^^
diff --git a/src/test/ui/lint/issue-69485-var-size-diffs-too-large.rs b/src/test/ui/lint/issue-69485-var-size-diffs-too-large.rs
index 0895f4c18e3..2560ffe168b 100644
--- a/src/test/ui/lint/issue-69485-var-size-diffs-too-large.rs
+++ b/src/test/ui/lint/issue-69485-var-size-diffs-too-large.rs
@@ -3,7 +3,7 @@
 // compile-flags: -Zmir-opt-level=0
 
 fn main() {
-    Bug::V([0; !0]); //~ ERROR is too big for the current
+    Bug::V([0; !0]); //~ ERROR are too big for the current
 }
 
 enum Bug {
diff --git a/src/test/ui/lint/issue-69485-var-size-diffs-too-large.stderr b/src/test/ui/lint/issue-69485-var-size-diffs-too-large.stderr
index 51eac95afb9..c229458da47 100644
--- a/src/test/ui/lint/issue-69485-var-size-diffs-too-large.stderr
+++ b/src/test/ui/lint/issue-69485-var-size-diffs-too-large.stderr
@@ -1,4 +1,4 @@
-error: the type `[u8; 18446744073709551615]` is too big for the current architecture
+error: values of the type `[u8; 18446744073709551615]` are too big for the current architecture
   --> $DIR/issue-69485-var-size-diffs-too-large.rs:6:12
    |
 LL |     Bug::V([0; !0]);
diff --git a/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs b/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs
index 982d5ecf8d0..a2ccb0369c4 100644
--- a/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs
+++ b/src/tools/clippy/clippy_lints/src/assertions_on_constants.rs
@@ -1,6 +1,5 @@
 use crate::consts::{constant, Constant};
-use crate::utils::paths;
-use crate::utils::{is_direct_expn_of, is_expn_of, match_function_call, snippet_opt, span_lint_and_help};
+use crate::utils::{is_direct_expn_of, is_expn_of, match_panic_call, snippet_opt, span_lint_and_help};
 use if_chain::if_chain;
 use rustc_ast::ast::LitKind;
 use rustc_hir::{Expr, ExprKind, PatKind, UnOp};
@@ -133,7 +132,7 @@ fn match_assert_with_message<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>)
         if let ExprKind::Block(ref inner_block, _) = block_expr.kind;
         if let Some(begin_panic_call) = &inner_block.expr;
         // function call
-        if let Some(args) = match_function_call(cx, begin_panic_call, &paths::BEGIN_PANIC);
+        if let Some(args) = match_panic_call(cx, begin_panic_call);
         if args.len() == 1;
         // bind the second argument of the `assert!` macro if it exists
         if let panic_message = snippet_opt(cx, args[0].span);
diff --git a/src/tools/clippy/clippy_lints/src/attrs.rs b/src/tools/clippy/clippy_lints/src/attrs.rs
index 55904a0ec0a..57702dafa6a 100644
--- a/src/tools/clippy/clippy_lints/src/attrs.rs
+++ b/src/tools/clippy/clippy_lints/src/attrs.rs
@@ -1,7 +1,7 @@
 //! checks for attributes
 
 use crate::utils::{
-    first_line_of_span, is_present_in_source, match_def_path, paths, snippet_opt, span_lint, span_lint_and_help,
+    first_line_of_span, is_present_in_source, match_panic_def_id, snippet_opt, span_lint, span_lint_and_help,
     span_lint_and_sugg, span_lint_and_then, without_block_comments,
 };
 use if_chain::if_chain;
@@ -513,7 +513,7 @@ fn is_relevant_expr(cx: &LateContext<'_>, typeck_results: &ty::TypeckResults<'_>
                 typeck_results
                     .qpath_res(qpath, path_expr.hir_id)
                     .opt_def_id()
-                    .map_or(true, |fun_id| !match_def_path(cx, fun_id, &paths::BEGIN_PANIC))
+                    .map_or(true, |fun_id| !match_panic_def_id(cx, fun_id))
             } else {
                 true
             }
diff --git a/src/tools/clippy/clippy_lints/src/fallible_impl_from.rs b/src/tools/clippy/clippy_lints/src/fallible_impl_from.rs
index fe817fe94f2..509a4a4e15f 100644
--- a/src/tools/clippy/clippy_lints/src/fallible_impl_from.rs
+++ b/src/tools/clippy/clippy_lints/src/fallible_impl_from.rs
@@ -1,5 +1,7 @@
-use crate::utils::paths::{BEGIN_PANIC, BEGIN_PANIC_FMT, FROM_TRAIT};
-use crate::utils::{is_expn_of, is_type_diagnostic_item, match_def_path, method_chain_args, span_lint_and_then};
+use crate::utils::paths::FROM_TRAIT;
+use crate::utils::{
+    is_expn_of, is_type_diagnostic_item, match_def_path, match_panic_def_id, method_chain_args, span_lint_and_then,
+};
 use if_chain::if_chain;
 use rustc_hir as hir;
 use rustc_lint::{LateContext, LateLintPass};
@@ -84,8 +86,7 @@ fn lint_impl_body<'tcx>(cx: &LateContext<'tcx>, impl_span: Span, impl_items: &[h
                 if let ExprKind::Call(ref func_expr, _) = expr.kind;
                 if let ExprKind::Path(QPath::Resolved(_, ref path)) = func_expr.kind;
                 if let Some(path_def_id) = path.res.opt_def_id();
-                if match_def_path(self.lcx, path_def_id, &BEGIN_PANIC) ||
-                    match_def_path(self.lcx, path_def_id, &BEGIN_PANIC_FMT);
+                if match_panic_def_id(self.lcx, path_def_id);
                 if is_expn_of(expr.span, "unreachable").is_none();
                 then {
                     self.result.push(expr.span);
diff --git a/src/tools/clippy/clippy_lints/src/implicit_return.rs b/src/tools/clippy/clippy_lints/src/implicit_return.rs
index 22c4fef32a3..ed7f3b9293d 100644
--- a/src/tools/clippy/clippy_lints/src/implicit_return.rs
+++ b/src/tools/clippy/clippy_lints/src/implicit_return.rs
@@ -1,8 +1,4 @@
-use crate::utils::{
-    fn_has_unsatisfiable_preds, match_def_path,
-    paths::{BEGIN_PANIC, BEGIN_PANIC_FMT},
-    snippet_opt, span_lint_and_then,
-};
+use crate::utils::{fn_has_unsatisfiable_preds, match_panic_def_id, snippet_opt, span_lint_and_then};
 use if_chain::if_chain;
 use rustc_errors::Applicability;
 use rustc_hir::intravisit::FnKind;
@@ -109,8 +105,7 @@ fn expr_match(cx: &LateContext<'_>, expr: &Expr<'_>) {
             if_chain! {
                 if let ExprKind::Path(qpath) = &expr.kind;
                 if let Some(path_def_id) = cx.qpath_res(qpath, expr.hir_id).opt_def_id();
-                if match_def_path(cx, path_def_id, &BEGIN_PANIC) ||
-                    match_def_path(cx, path_def_id, &BEGIN_PANIC_FMT);
+                if match_panic_def_id(cx, path_def_id);
                 then { }
                 else {
                     lint(cx, expr.span, expr.span, LINT_RETURN)
diff --git a/src/tools/clippy/clippy_lints/src/panic_unimplemented.rs b/src/tools/clippy/clippy_lints/src/panic_unimplemented.rs
index 6379dffd22e..3d888fe7325 100644
--- a/src/tools/clippy/clippy_lints/src/panic_unimplemented.rs
+++ b/src/tools/clippy/clippy_lints/src/panic_unimplemented.rs
@@ -1,4 +1,4 @@
-use crate::utils::{is_direct_expn_of, is_expn_of, match_function_call, paths, span_lint};
+use crate::utils::{is_direct_expn_of, is_expn_of, match_panic_call, span_lint};
 use if_chain::if_chain;
 use rustc_ast::ast::LitKind;
 use rustc_hir::{Expr, ExprKind};
@@ -93,27 +93,27 @@ declare_lint_pass!(PanicUnimplemented => [PANIC_PARAMS, UNIMPLEMENTED, UNREACHAB
 
 impl<'tcx> LateLintPass<'tcx> for PanicUnimplemented {
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) {
-        if_chain! {
-            if let ExprKind::Block(ref block, _) = expr.kind;
-            if let Some(ref ex) = block.expr;
-            if let Some(params) = match_function_call(cx, ex, &paths::BEGIN_PANIC)
-                .or_else(|| match_function_call(cx, ex, &paths::BEGIN_PANIC_FMT));
-            then {
-                let span = get_outer_span(expr);
-                if is_expn_of(expr.span, "unimplemented").is_some() {
-                    span_lint(cx, UNIMPLEMENTED, span,
-                              "`unimplemented` should not be present in production code");
-                } else if is_expn_of(expr.span, "todo").is_some() {
-                    span_lint(cx, TODO, span,
-                              "`todo` should not be present in production code");
-                } else if is_expn_of(expr.span, "unreachable").is_some() {
-                    span_lint(cx, UNREACHABLE, span,
-                              "`unreachable` should not be present in production code");
-                } else if is_expn_of(expr.span, "panic").is_some() {
-                    span_lint(cx, PANIC, span,
-                              "`panic` should not be present in production code");
-                    match_panic(params, expr, cx);
-                }
+        if let Some(params) = match_panic_call(cx, expr) {
+            let span = get_outer_span(expr);
+            if is_expn_of(expr.span, "unimplemented").is_some() {
+                span_lint(
+                    cx,
+                    UNIMPLEMENTED,
+                    span,
+                    "`unimplemented` should not be present in production code",
+                );
+            } else if is_expn_of(expr.span, "todo").is_some() {
+                span_lint(cx, TODO, span, "`todo` should not be present in production code");
+            } else if is_expn_of(expr.span, "unreachable").is_some() {
+                span_lint(
+                    cx,
+                    UNREACHABLE,
+                    span,
+                    "`unreachable` should not be present in production code",
+                );
+            } else if is_expn_of(expr.span, "panic").is_some() {
+                span_lint(cx, PANIC, span, "`panic` should not be present in production code");
+                match_panic(params, expr, cx);
             }
         }
     }
diff --git a/src/tools/clippy/clippy_lints/src/utils/mod.rs b/src/tools/clippy/clippy_lints/src/utils/mod.rs
index b027bfebacb..270fdc9bf46 100644
--- a/src/tools/clippy/clippy_lints/src/utils/mod.rs
+++ b/src/tools/clippy/clippy_lints/src/utils/mod.rs
@@ -1196,7 +1196,7 @@ pub fn has_iter_method(cx: &LateContext<'_>, probably_ref_ty: Ty<'_>) -> Option<
 /// Usage:
 ///
 /// ```rust,ignore
-/// if let Some(args) = match_function_call(cx, begin_panic_call, &paths::BEGIN_PANIC);
+/// if let Some(args) = match_function_call(cx, cmp_max_call, &paths::CMP_MAX);
 /// ```
 pub fn match_function_call<'tcx>(
     cx: &LateContext<'tcx>,
@@ -1231,6 +1231,24 @@ pub fn match_def_path<'tcx>(cx: &LateContext<'tcx>, did: DefId, syms: &[&str]) -
     cx.match_def_path(did, &syms)
 }
 
+pub fn match_panic_call<'tcx>(cx: &LateContext<'tcx>, expr: &'tcx Expr<'_>) -> Option<&'tcx [Expr<'tcx>]> {
+    match_function_call(cx, expr, &paths::BEGIN_PANIC)
+        .or_else(|| match_function_call(cx, expr, &paths::BEGIN_PANIC_FMT))
+        .or_else(|| match_function_call(cx, expr, &paths::PANIC_ANY))
+        .or_else(|| match_function_call(cx, expr, &paths::PANICKING_PANIC))
+        .or_else(|| match_function_call(cx, expr, &paths::PANICKING_PANIC_FMT))
+        .or_else(|| match_function_call(cx, expr, &paths::PANICKING_PANIC_STR))
+}
+
+pub fn match_panic_def_id(cx: &LateContext<'_>, did: DefId) -> bool {
+    match_def_path(cx, did, &paths::BEGIN_PANIC)
+        || match_def_path(cx, did, &paths::BEGIN_PANIC_FMT)
+        || match_def_path(cx, did, &paths::PANIC_ANY)
+        || match_def_path(cx, did, &paths::PANICKING_PANIC)
+        || match_def_path(cx, did, &paths::PANICKING_PANIC_FMT)
+        || match_def_path(cx, did, &paths::PANICKING_PANIC_STR)
+}
+
 /// Returns the list of condition expressions and the list of blocks in a
 /// sequence of `if/else`.
 /// E.g., this returns `([a, b], [c, d, e])` for the expression
diff --git a/src/tools/clippy/clippy_lints/src/utils/paths.rs b/src/tools/clippy/clippy_lints/src/utils/paths.rs
index 1ad8c602986..8f5fbfd9f84 100644
--- a/src/tools/clippy/clippy_lints/src/utils/paths.rs
+++ b/src/tools/clippy/clippy_lints/src/utils/paths.rs
@@ -8,8 +8,8 @@ pub const ANY_TRAIT: [&str; 3] = ["std", "any", "Any"];
 pub const ARC_PTR_EQ: [&str; 4] = ["alloc", "sync", "Arc", "ptr_eq"];
 pub const ASMUT_TRAIT: [&str; 3] = ["core", "convert", "AsMut"];
 pub const ASREF_TRAIT: [&str; 3] = ["core", "convert", "AsRef"];
-pub const BEGIN_PANIC: [&str; 3] = ["std", "panicking", "begin_panic"];
-pub const BEGIN_PANIC_FMT: [&str; 3] = ["std", "panicking", "begin_panic_fmt"];
+pub(super) const BEGIN_PANIC: [&str; 3] = ["std", "panicking", "begin_panic"];
+pub(super) const BEGIN_PANIC_FMT: [&str; 3] = ["std", "panicking", "begin_panic_fmt"];
 pub const BINARY_HEAP: [&str; 4] = ["alloc", "collections", "binary_heap", "BinaryHeap"];
 pub const BORROW_TRAIT: [&str; 3] = ["core", "borrow", "Borrow"];
 pub const BOX: [&str; 3] = ["alloc", "boxed", "Box"];
@@ -78,6 +78,10 @@ pub const ORD: [&str; 3] = ["core", "cmp", "Ord"];
 pub const OS_STRING: [&str; 4] = ["std", "ffi", "os_str", "OsString"];
 pub const OS_STRING_AS_OS_STR: [&str; 5] = ["std", "ffi", "os_str", "OsString", "as_os_str"];
 pub const OS_STR_TO_OS_STRING: [&str; 5] = ["std", "ffi", "os_str", "OsStr", "to_os_string"];
+pub(super) const PANICKING_PANIC: [&str; 3] = ["core", "panicking", "panic"];
+pub(super) const PANICKING_PANIC_FMT: [&str; 3] = ["core", "panicking", "panic_fmt"];
+pub(super) const PANICKING_PANIC_STR: [&str; 3] = ["core", "panicking", "panic_str"];
+pub(super) const PANIC_ANY: [&str; 3] = ["std", "panic", "panic_any"];
 pub const PARKING_LOT_MUTEX_GUARD: [&str; 2] = ["parking_lot", "MutexGuard"];
 pub const PARKING_LOT_RWLOCK_READ_GUARD: [&str; 2] = ["parking_lot", "RwLockReadGuard"];
 pub const PARKING_LOT_RWLOCK_WRITE_GUARD: [&str; 2] = ["parking_lot", "RwLockWriteGuard"];
diff --git a/src/tools/clippy/tests/ui/panicking_macros.rs b/src/tools/clippy/tests/ui/panicking_macros.rs
index f91ccfaed74..77fcb8dfd02 100644
--- a/src/tools/clippy/tests/ui/panicking_macros.rs
+++ b/src/tools/clippy/tests/ui/panicking_macros.rs
@@ -1,6 +1,8 @@
 #![warn(clippy::unimplemented, clippy::unreachable, clippy::todo, clippy::panic)]
 #![allow(clippy::assertions_on_constants)]
 
+extern crate core;
+
 fn panic() {
     let a = 2;
     panic!();
@@ -33,9 +35,18 @@ fn unreachable() {
     let b = a + 2;
 }
 
+fn core_versions() {
+    use core::{panic, todo, unimplemented, unreachable};
+    panic!();
+    todo!();
+    unimplemented!();
+    unreachable!();
+}
+
 fn main() {
     panic();
     todo();
     unimplemented();
     unreachable();
+    core_versions();
 }
diff --git a/src/tools/clippy/tests/ui/panicking_macros.stderr b/src/tools/clippy/tests/ui/panicking_macros.stderr
index 37c11d72a57..83234c0ed92 100644
--- a/src/tools/clippy/tests/ui/panicking_macros.stderr
+++ b/src/tools/clippy/tests/ui/panicking_macros.stderr
@@ -1,5 +1,5 @@
 error: `panic` should not be present in production code
-  --> $DIR/panicking_macros.rs:6:5
+  --> $DIR/panicking_macros.rs:8:5
    |
 LL |     panic!();
    |     ^^^^^^^^^
@@ -7,7 +7,7 @@ LL |     panic!();
    = note: `-D clippy::panic` implied by `-D warnings`
 
 error: `panic` should not be present in production code
-  --> $DIR/panicking_macros.rs:7:5
+  --> $DIR/panicking_macros.rs:9:5
    |
 LL |     panic!("message");
    |     ^^^^^^^^^^^^^^^^^^
@@ -15,7 +15,7 @@ LL |     panic!("message");
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: `panic` should not be present in production code
-  --> $DIR/panicking_macros.rs:8:5
+  --> $DIR/panicking_macros.rs:10:5
    |
 LL |     panic!("{} {}", "panic with", "multiple arguments");
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -23,7 +23,7 @@ LL |     panic!("{} {}", "panic with", "multiple arguments");
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: `todo` should not be present in production code
-  --> $DIR/panicking_macros.rs:14:5
+  --> $DIR/panicking_macros.rs:16:5
    |
 LL |     todo!();
    |     ^^^^^^^^
@@ -31,19 +31,19 @@ LL |     todo!();
    = note: `-D clippy::todo` implied by `-D warnings`
 
 error: `todo` should not be present in production code
-  --> $DIR/panicking_macros.rs:15:5
+  --> $DIR/panicking_macros.rs:17:5
    |
 LL |     todo!("message");
    |     ^^^^^^^^^^^^^^^^^
 
 error: `todo` should not be present in production code
-  --> $DIR/panicking_macros.rs:16:5
+  --> $DIR/panicking_macros.rs:18:5
    |
 LL |     todo!("{} {}", "panic with", "multiple arguments");
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: `unimplemented` should not be present in production code
-  --> $DIR/panicking_macros.rs:22:5
+  --> $DIR/panicking_macros.rs:24:5
    |
 LL |     unimplemented!();
    |     ^^^^^^^^^^^^^^^^^
@@ -51,19 +51,19 @@ LL |     unimplemented!();
    = note: `-D clippy::unimplemented` implied by `-D warnings`
 
 error: `unimplemented` should not be present in production code
-  --> $DIR/panicking_macros.rs:23:5
+  --> $DIR/panicking_macros.rs:25:5
    |
 LL |     unimplemented!("message");
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: `unimplemented` should not be present in production code
-  --> $DIR/panicking_macros.rs:24:5
+  --> $DIR/panicking_macros.rs:26:5
    |
 LL |     unimplemented!("{} {}", "panic with", "multiple arguments");
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 error: `unreachable` should not be present in production code
-  --> $DIR/panicking_macros.rs:30:5
+  --> $DIR/panicking_macros.rs:32:5
    |
 LL |     unreachable!();
    |     ^^^^^^^^^^^^^^^
@@ -71,7 +71,7 @@ LL |     unreachable!();
    = note: `-D clippy::unreachable` implied by `-D warnings`
 
 error: `unreachable` should not be present in production code
-  --> $DIR/panicking_macros.rs:31:5
+  --> $DIR/panicking_macros.rs:33:5
    |
 LL |     unreachable!("message");
    |     ^^^^^^^^^^^^^^^^^^^^^^^^
@@ -79,10 +79,34 @@ LL |     unreachable!("message");
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: `unreachable` should not be present in production code
-  --> $DIR/panicking_macros.rs:32:5
+  --> $DIR/panicking_macros.rs:34:5
    |
 LL |     unreachable!("{} {}", "panic with", "multiple arguments");
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 12 previous errors
+error: `panic` should not be present in production code
+  --> $DIR/panicking_macros.rs:40:5
+   |
+LL |     panic!();
+   |     ^^^^^^^^^
+
+error: `todo` should not be present in production code
+  --> $DIR/panicking_macros.rs:41:5
+   |
+LL |     todo!();
+   |     ^^^^^^^^
+
+error: `unimplemented` should not be present in production code
+  --> $DIR/panicking_macros.rs:42:5
+   |
+LL |     unimplemented!();
+   |     ^^^^^^^^^^^^^^^^^
+
+error: `unreachable` should not be present in production code
+  --> $DIR/panicking_macros.rs:43:5
+   |
+LL |     unreachable!();
+   |     ^^^^^^^^^^^^^^^
+
+error: aborting due to 16 previous errors