update most tests to 2021 edition

Author: llogiq

Cargo.toml

@@ -28,7 +28,7 @@ tempfile = { version = "3.2", optional = true }
 
 [dev-dependencies]
 cargo_metadata = "0.12"
-compiletest_rs = { version = "0.7", features = ["tmp"] }
+compiletest_rs = { version = "0.7.1", features = ["tmp"] }
 tester = "0.9"
 regex = "1.5"
 # This is used by the `collect-metadata` alias.

tests/compile-test.rs

@@ -104,7 +104,10 @@ fn extern_flags() -> String {
 }
 
 fn default_config() -> compiletest::Config {
-    let mut config = compiletest::Config::default();
+    let mut config = compiletest::Config {
+        edition: Some("2021".into()),
+        ..compiletest::Config::default()
+    };
 
     if let Ok(filters) = env::var("TESTNAME") {
         config.filters = filters.split(',').map(std::string::ToString::to_string).collect();

tests/ui/assertions_on_constants.rs

@@ -1,3 +1,4 @@
+//edition:2015
 #![allow(non_fmt_panics)]
 
 macro_rules! assert_const {
@@ -6,7 +7,6 @@ macro_rules! assert_const {
         debug_assert!($len < 0);
     };
 }
-
 fn main() {
     assert!(true);
     assert!(false);

tests/ui/crashes/ice-3969.rs

@@ -1,3 +1,4 @@
+//edition:2015
 // https://github.com/rust-lang/rust-clippy/issues/3969
 // used to crash: error: internal compiler error:
 // src/librustc_traits/normalize_erasing_regions.rs:43: could not fully normalize `<i32 as
@@ -7,7 +8,6 @@
 // in type inference.
 #![feature(trivial_bounds)]
 #![allow(unused)]
-
 trait A {}
 
 impl A for i32 {}

tests/ui/crashes/ice-6252.rs

@@ -1,6 +1,6 @@
+//edition:2015
 // originally from glacier fixed/77919.rs
 // encountered errors resolving bounds after type-checking
-
 trait TypeVal<T> {
     const VAL: T;
 }

tests/ui/debug_assert_with_mut_call.rs

@@ -1,9 +1,9 @@
-// compile-flags: --edition=2018
 #![feature(custom_inner_attributes)]
 #![rustfmt::skip]
 #![warn(clippy::debug_assert_with_mut_call)]
 #![allow(clippy::redundant_closure_call)]
 
+
 struct S;
 
 impl S {

tests/ui/diverging_sub_expression.rs

@@ -1,6 +1,6 @@
+//edition:2015
 #![warn(clippy::diverging_sub_expression)]
 #![allow(clippy::match_same_arms, clippy::logic_bug)]
-
 #[allow(clippy::empty_loop)]
 fn diverge() -> ! {
     loop {}

tests/ui/fallible_impl_from.stderr

@@ -38,7 +38,7 @@ note: potential failure(s)
    |
 LL |             panic!();
    |             ^^^^^^^^
-   = note: this error originates in the macro `$crate::panic::panic_2015` (in Nightly builds, run with -Z macro-backtrace for more info)
+   = note: this error originates in the macro `$crate::panic::panic_2021` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: consider implementing `TryFrom` instead
   --> $DIR/fallible_impl_from.rs:36:1
@@ -65,7 +65,7 @@ LL |         } else if s.parse::<u32>().unwrap() != 42 {
    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^
 LL |             panic!("{:?}", s);
    |             ^^^^^^^^^^^^^^^^^
-   = note: this error originates in the macro `$crate::panic::panic_2015` (in Nightly builds, run with -Z macro-backtrace for more info)
+   = note: this error originates in the macro `$crate::panic::panic_2021` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: consider implementing `TryFrom` instead
   --> $DIR/fallible_impl_from.rs:54:1
@@ -87,7 +87,7 @@ LL |         if s.parse::<u32>().ok().unwrap() != 42 {
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 LL |             panic!("{:?}", s);
    |             ^^^^^^^^^^^^^^^^^
-   = note: this error originates in the macro `$crate::panic::panic_2015` (in Nightly builds, run with -Z macro-backtrace for more info)
+   = note: this error originates in the macro `$crate::panic::panic_2021` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to 4 previous errors
 

tests/ui/if_then_panic.fixed

@@ -1,3 +1,4 @@
+// edition:2018
 // run-rustfix
 #![warn(clippy::if_then_panic)]
 

tests/ui/if_then_panic.rs

@@ -1,3 +1,4 @@
+// edition:2018
 // run-rustfix
 #![warn(clippy::if_then_panic)]
 

tests/ui/if_then_panic.stderr

@@ -1,5 +1,5 @@
 error: only a `panic!` in `if`-then statement
-  --> $DIR/if_then_panic.rs:19:5
+  --> $DIR/if_then_panic.rs:20:5
    |
 LL | /     if !a.is_empty() {
 LL | |         panic!("qaqaq{:?}", a);
@@ -9,47 +9,47 @@ LL | |     }
    = note: `-D clippy::if-then-panic` implied by `-D warnings`
 
 error: only a `panic!` in `if`-then statement
-  --> $DIR/if_then_panic.rs:22:5
+  --> $DIR/if_then_panic.rs:23:5
    |
 LL | /     if !a.is_empty() {
 LL | |         panic!("qwqwq");
 LL | |     }
    | |_____^ help: try: `assert!(a.is_empty(), "qwqwq");`
 
 error: only a `panic!` in `if`-then statement
-  --> $DIR/if_then_panic.rs:39:5
+  --> $DIR/if_then_panic.rs:40:5
    |
 LL | /     if b.is_empty() {
 LL | |         panic!("panic1");
 LL | |     }
    | |_____^ help: try: `assert!(!b.is_empty(), "panic1");`
 
 error: only a `panic!` in `if`-then statement
-  --> $DIR/if_then_panic.rs:42:5
+  --> $DIR/if_then_panic.rs:43:5
    |
 LL | /     if b.is_empty() && a.is_empty() {
 LL | |         panic!("panic2");
 LL | |     }
    | |_____^ help: try: `assert!(!(b.is_empty() && a.is_empty()), "panic2");`
 
 error: only a `panic!` in `if`-then statement
-  --> $DIR/if_then_panic.rs:45:5
+  --> $DIR/if_then_panic.rs:46:5
    |
 LL | /     if a.is_empty() && !b.is_empty() {
 LL | |         panic!("panic3");
 LL | |     }
    | |_____^ help: try: `assert!(!(a.is_empty() && !b.is_empty()), "panic3");`
 
 error: only a `panic!` in `if`-then statement
-  --> $DIR/if_then_panic.rs:48:5
+  --> $DIR/if_then_panic.rs:49:5
    |
 LL | /     if b.is_empty() || a.is_empty() {
 LL | |         panic!("panic4");
 LL | |     }
    | |_____^ help: try: `assert!(!(b.is_empty() || a.is_empty()), "panic4");`
 
 error: only a `panic!` in `if`-then statement
-  --> $DIR/if_then_panic.rs:51:5
+  --> $DIR/if_then_panic.rs:52:5
    |
 LL | /     if a.is_empty() || !b.is_empty() {
 LL | |         panic!("panic5");

tests/ui/issue-7447.stderr

@@ -0,0 +1,19 @@
+error: sub-expression diverges
+  --> $DIR/issue-7447.rs:23:15
+   |
+LL |     byte_view(panic!());
+   |               ^^^^^^^^
+   |
+   = note: `-D clippy::diverging-sub-expression` implied by `-D warnings`
+   = note: this error originates in the macro `$crate::panic::panic_2021` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: sub-expression diverges
+  --> $DIR/issue-7447.rs:24:19
+   |
+LL |     group_entries(panic!());
+   |                   ^^^^^^^^
+   |
+   = note: this error originates in the macro `$crate::panic::panic_2021` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 2 previous errors
+

tests/ui/macro_use_imports.fixed

@@ -1,4 +1,3 @@
-// compile-flags: --edition 2018
 // aux-build:macro_rules.rs
 // aux-build:macro_use_helper.rs
 // aux-build:proc_macro_derive.rs

tests/ui/macro_use_imports.rs

@@ -1,4 +1,3 @@
-// compile-flags: --edition 2018
 // aux-build:macro_rules.rs
 // aux-build:macro_use_helper.rs
 // aux-build:proc_macro_derive.rs

tests/ui/macro_use_imports.stderr

@@ -1,28 +1,28 @@
 error: `macro_use` attributes are no longer needed in the Rust 2018 edition
-  --> $DIR/macro_use_imports.rs:19:5
+  --> $DIR/macro_use_imports.rs:18:5
    |
 LL |     #[macro_use]
    |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mac::{pub_macro, inner_mod_macro, function_macro, ty_macro, pub_in_private_macro};`
    |
    = note: `-D clippy::macro-use-imports` implied by `-D warnings`
 
 error: `macro_use` attributes are no longer needed in the Rust 2018 edition
-  --> $DIR/macro_use_imports.rs:25:5
+  --> $DIR/macro_use_imports.rs:20:5
    |
 LL |     #[macro_use]
-   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mac::inner::nested::string_add;`
+   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mini_mac::ClippyMiniMacroTest;`
 
 error: `macro_use` attributes are no longer needed in the Rust 2018 edition
-  --> $DIR/macro_use_imports.rs:21:5
+  --> $DIR/macro_use_imports.rs:22:5
    |
 LL |     #[macro_use]
-   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mini_mac::ClippyMiniMacroTest;`
+   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mac::{inner::foofoo, inner::try_err};`
 
 error: `macro_use` attributes are no longer needed in the Rust 2018 edition
-  --> $DIR/macro_use_imports.rs:23:5
+  --> $DIR/macro_use_imports.rs:24:5
    |
 LL |     #[macro_use]
-   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mac::{inner::foofoo, inner::try_err};`
+   |     ^^^^^^^^^^^^ help: remove the attribute and import the macro directly, try: `use mac::inner::nested::string_add;`
 
 error: aborting due to 4 previous errors
 

tests/ui/match_wild_err_arm.rs

@@ -1,10 +1,10 @@
+//edition:2015
 #![feature(exclusive_range_pattern)]
 #![allow(clippy::match_same_arms)]
 #![warn(clippy::match_wild_err_arm)]
 
 fn match_wild_err_arm() {
     let x: Result<i32, &str> = Ok(3);
-
     match x {
         Ok(3) => println!("ok"),
         Ok(_) => println!("ok"),

tests/ui/missing-doc.rs

@@ -1,9 +1,9 @@
+//edition:2015
 #![warn(clippy::missing_docs_in_private_items)]
 // When denying at the crate level, be sure to not get random warnings from the
 // injected intrinsics by the compiler.
 #![allow(dead_code)]
 #![feature(global_asm)]
-
 //! Some garbage docs for the crate here
 #![doc = "More garbage"]
 

tests/ui/missing_panics_doc.rs

@@ -1,6 +1,6 @@
+//edition:2015
 #![warn(clippy::missing_panics_doc)]
 #![allow(clippy::option_map_unit_fn)]
-
 fn main() {}
 
 /// This needs to be documented

tests/ui/non_expressive_names.rs

@@ -15,8 +15,8 @@ struct InstSplit {
 impl MaybeInst {
     fn fill(&mut self) {
         let filled = match *self {
-            MaybeInst::Split1(goto1) => panic!(1),
-            MaybeInst::Split2(goto2) => panic!(2),
+            MaybeInst::Split1(goto1) => panic!("1"),
+            MaybeInst::Split2(goto2) => panic!("2"),
             _ => unimplemented!(),
         };
         unimplemented!()

tests/ui/panic_in_result_fn.rs

@@ -1,6 +1,6 @@
+//edition:2015
 #![warn(clippy::panic_in_result_fn)]
 #![allow(clippy::unnecessary_wraps)]
-
 struct A;
 
 impl A {

tests/ui/redundant_clone.fixed

@@ -196,7 +196,7 @@ fn clone_then_move_cloned() {
     fn foo<F: Fn()>(_: &Alpha, _: F) {}
     let x = Alpha;
     // ok, data is moved while the clone is in use.
-    foo(&x.clone(), move || {
+    foo(&x, move || {
         let _ = x;
     });
 

tests/ui/redundant_clone.stderr

@@ -167,5 +167,17 @@ note: cloned value is neither consumed nor mutated
 LL |     let y = x.clone().join("matthias");
    |             ^^^^^^^^^
 
-error: aborting due to 14 previous errors
+error: redundant clone
+  --> $DIR/redundant_clone.rs:199:11
+   |
+LL |     foo(&x.clone(), move || {
+   |           ^^^^^^^^ help: remove this
+   |
+note: this value is dropped without further use
+  --> $DIR/redundant_clone.rs:199:10
+   |
+LL |     foo(&x.clone(), move || {
+   |          ^
+
+error: aborting due to 15 previous errors
 

tests/ui/wildcard_imports.fixed

@@ -1,3 +1,4 @@
+// edition:2015
 // run-rustfix
 // aux-build:wildcard_imports_helper.rs
 

tests/ui/wildcard_imports.rs

@@ -1,3 +1,4 @@
+// edition:2015
 // run-rustfix
 // aux-build:wildcard_imports_helper.rs