Do not deduplicate diagnostics in UI tests

src/test/compile-fail/consts/const-fn-error.rs

@@ -6,6 +6,7 @@ const fn f(x: usize) -> usize {
     let mut sum = 0;
     for i in 0..x {
         //~^ ERROR E0015
+        //~| ERROR E0015
         //~| ERROR E0658
         //~| ERROR E0080
         //~| ERROR E0744

src/test/compile-fail/issue-52443.rs

@@ -8,6 +8,7 @@ fn main() {
     //~| WARN denote infinite loops with
     [(); { for _ in 0usize.. {}; 0}];
     //~^ ERROR calls in constants are limited to constant functions
+    //~| ERROR calls in constants are limited to constant functions
     //~| ERROR `for` is not allowed in a `const`
     //~| ERROR references in constants may only refer to immutable values
     //~| ERROR evaluation of constant value failed

src/test/ui-fulldeps/lint-plugin-forbid-attrs.rs

@@ -10,6 +10,8 @@ fn lintme() { } //~ ERROR item is named 'lintme'
 
 #[allow(test_lint)]
 //~^ ERROR allow(test_lint) overruled by outer forbid(test_lint)
+//~| ERROR allow(test_lint) overruled by outer forbid(test_lint)
+//~| ERROR allow(test_lint) overruled by outer forbid(test_lint)
 pub fn main() {
     lintme();
 }

src/test/ui-fulldeps/lint-plugin-forbid-attrs.stderr

@@ -7,6 +7,15 @@ LL | #![forbid(test_lint)]
 LL | #[allow(test_lint)]
    |         ^^^^^^^^^ overruled by previous forbid
 
+error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
+  --> $DIR/lint-plugin-forbid-attrs.rs:11:9
+   |
+LL | #![forbid(test_lint)]
+   |           --------- `forbid` level set here
+...
+LL | #[allow(test_lint)]
+   |         ^^^^^^^^^ overruled by previous forbid
+
 warning: use of deprecated attribute `plugin`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675
   --> $DIR/lint-plugin-forbid-attrs.rs:5:1
    |
@@ -27,6 +36,15 @@ note: lint level defined here
 LL | #![forbid(test_lint)]
    |           ^^^^^^^^^
 
-error: aborting due to 2 previous errors
+error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
+  --> $DIR/lint-plugin-forbid-attrs.rs:11:9
+   |
+LL | #![forbid(test_lint)]
+   |           --------- `forbid` level set here
+...
+LL | #[allow(test_lint)]
+   |         ^^^^^^^^^ overruled by previous forbid
+
+error: aborting due to 4 previous errors
 
 For more information about this error, try `rustc --explain E0453`.

src/test/ui-fulldeps/lint-plugin-forbid-cmdline.rs

@@ -8,6 +8,8 @@
 fn lintme() { } //~ ERROR item is named 'lintme'
 
 #[allow(test_lint)] //~ ERROR allow(test_lint) overruled by outer forbid(test_lint)
+                    //~| ERROR allow(test_lint) overruled by outer forbid(test_lint)
+                    //~| ERROR allow(test_lint) overruled by outer forbid(test_lint)
 pub fn main() {
     lintme();
 }

src/test/ui-fulldeps/lint-plugin-forbid-cmdline.stderr

@@ -6,6 +6,14 @@ LL | #[allow(test_lint)]
    |
    = note: `forbid` lint level was set on command line
 
+error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
+  --> $DIR/lint-plugin-forbid-cmdline.rs:10:9
+   |
+LL | #[allow(test_lint)]
+   |         ^^^^^^^^^ overruled by previous forbid
+   |
+   = note: `forbid` lint level was set on command line
+
 warning: use of deprecated attribute `plugin`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675
   --> $DIR/lint-plugin-forbid-cmdline.rs:6:1
    |
@@ -22,6 +30,14 @@ LL | fn lintme() { }
    |
    = note: requested on the command line with `-F test-lint`
 
-error: aborting due to 2 previous errors
+error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
+  --> $DIR/lint-plugin-forbid-cmdline.rs:10:9
+   |
+LL | #[allow(test_lint)]
+   |         ^^^^^^^^^ overruled by previous forbid
+   |
+   = note: `forbid` lint level was set on command line
+
+error: aborting due to 4 previous errors
 
 For more information about this error, try `rustc --explain E0453`.

src/test/ui-fulldeps/lint-tool-cmdline-allow.stderr

@@ -2,6 +2,10 @@ warning: lint name `test_lint` is deprecated and does not have an effect anymore
    |
    = note: requested on the command line with `-A test_lint`
 
+warning: lint name `test_lint` is deprecated and does not have an effect anymore. Use: clippy::test_lint
+   |
+   = note: requested on the command line with `-A test_lint`
+
 warning: use of deprecated attribute `plugin`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675
   --> $DIR/lint-tool-cmdline-allow.rs:7:1
    |
@@ -10,6 +14,10 @@ LL | #![plugin(lint_tool_test)]
    |
    = note: `#[warn(deprecated)]` on by default
 
+warning: lint name `test_lint` is deprecated and does not have an effect anymore. Use: clippy::test_lint
+   |
+   = note: requested on the command line with `-A test_lint`
+
 warning: item is named 'lintme'
   --> $DIR/lint-tool-cmdline-allow.rs:9:1
    |
@@ -18,3 +26,7 @@ LL | fn lintme() {}
    |
    = note: `#[warn(clippy::test_lint)]` on by default
 
+warning: lint name `test_lint` is deprecated and does not have an effect anymore. Use: clippy::test_lint
+   |
+   = note: requested on the command line with `-A test_lint`
+

src/test/ui-fulldeps/lint-tool-test.rs

@@ -8,9 +8,12 @@
 #![allow(dead_code)]
 #![cfg_attr(foo, warn(test_lint))]
 //~^ WARNING lint name `test_lint` is deprecated and may not have an effect in the future
-//~^^ WARNING lint name `test_lint` is deprecated and may not have an effect in the future
+//~| WARNING lint name `test_lint` is deprecated and may not have an effect in the future
+//~| WARNING lint name `test_lint` is deprecated and may not have an effect in the future
 #![deny(clippy_group)]
 //~^ WARNING lint name `clippy_group` is deprecated and may not have an effect in the future
+//~| WARNING lint name `clippy_group` is deprecated and may not have an effect in the future
+//~| WARNING lint name `clippy_group` is deprecated and may not have an effect in the future
 
 fn lintme() { } //~ ERROR item is named 'lintme'
 
@@ -25,6 +28,8 @@ pub fn main() {
 
 #[allow(test_group)]
 //~^ WARNING lint name `test_group` is deprecated and may not have an effect in the future
+//~| WARNING lint name `test_group` is deprecated and may not have an effect in the future
+//~| WARNING lint name `test_group` is deprecated and may not have an effect in the future
 #[deny(this_lint_does_not_exist)] //~ WARNING unknown lint: `this_lint_does_not_exist`
 fn hello() {
     fn lintmetoo() { }

src/test/ui-fulldeps/lint-tool-test.stderr

@@ -7,19 +7,19 @@ LL | #![cfg_attr(foo, warn(test_lint))]
    = note: `#[warn(renamed_and_removed_lints)]` on by default
 
 warning: lint name `clippy_group` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
-  --> $DIR/lint-tool-test.rs:12:9
+  --> $DIR/lint-tool-test.rs:13:9
    |
 LL | #![deny(clippy_group)]
    |         ^^^^^^^^^^^^ help: change it to: `clippy::group`
 
 warning: lint name `test_group` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
-  --> $DIR/lint-tool-test.rs:26:9
+  --> $DIR/lint-tool-test.rs:29:9
    |
 LL | #[allow(test_group)]
    |         ^^^^^^^^^^ help: change it to: `clippy::test_group`
 
 warning: unknown lint: `this_lint_does_not_exist`
-  --> $DIR/lint-tool-test.rs:28:8
+  --> $DIR/lint-tool-test.rs:33:8
    |
 LL | #[deny(this_lint_does_not_exist)]
    |        ^^^^^^^^^^^^^^^^^^^^^^^^
@@ -32,6 +32,18 @@ warning: lint name `test_lint` is deprecated and may not have an effect in the f
 LL | #![cfg_attr(foo, warn(test_lint))]
    |                       ^^^^^^^^^ help: change it to: `clippy::test_lint`
 
+warning: lint name `clippy_group` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
+  --> $DIR/lint-tool-test.rs:13:9
+   |
+LL | #![deny(clippy_group)]
+   |         ^^^^^^^^^^^^ help: change it to: `clippy::group`
+
+warning: lint name `test_group` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
+  --> $DIR/lint-tool-test.rs:29:9
+   |
+LL | #[allow(test_group)]
+   |         ^^^^^^^^^^ help: change it to: `clippy::test_group`
+
 warning: use of deprecated attribute `plugin`: compiler plugins are deprecated. See https://github.com/rust-lang/rust/pull/64675
   --> $DIR/lint-tool-test.rs:6:1
    |
@@ -40,31 +52,49 @@ LL | #![plugin(lint_tool_test)]
    |
    = note: `#[warn(deprecated)]` on by default
 
+warning: lint name `test_lint` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
+  --> $DIR/lint-tool-test.rs:9:23
+   |
+LL | #![cfg_attr(foo, warn(test_lint))]
+   |                       ^^^^^^^^^ help: change it to: `clippy::test_lint`
+
+warning: lint name `clippy_group` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
+  --> $DIR/lint-tool-test.rs:13:9
+   |
+LL | #![deny(clippy_group)]
+   |         ^^^^^^^^^^^^ help: change it to: `clippy::group`
+
 error: item is named 'lintme'
-  --> $DIR/lint-tool-test.rs:15:1
+  --> $DIR/lint-tool-test.rs:18:1
    |
 LL | fn lintme() { }
    | ^^^^^^^^^^^^^^^
    |
 note: lint level defined here
-  --> $DIR/lint-tool-test.rs:12:9
+  --> $DIR/lint-tool-test.rs:13:9
    |
 LL | #![deny(clippy_group)]
    |         ^^^^^^^^^^^^
    = note: `#[deny(clippy::test_lint)]` implied by `#[deny(clippy::group)]`
 
 error: item is named 'lintmetoo'
-  --> $DIR/lint-tool-test.rs:23:5
+  --> $DIR/lint-tool-test.rs:26:5
    |
 LL |     fn lintmetoo() { }
    |     ^^^^^^^^^^^^^^^^^^
    |
 note: lint level defined here
-  --> $DIR/lint-tool-test.rs:12:9
+  --> $DIR/lint-tool-test.rs:13:9
    |
 LL | #![deny(clippy_group)]
    |         ^^^^^^^^^^^^
    = note: `#[deny(clippy::test_group)]` implied by `#[deny(clippy::group)]`
 
+warning: lint name `test_group` is deprecated and may not have an effect in the future. Also `cfg_attr(cargo-clippy)` won't be necessary anymore
+  --> $DIR/lint-tool-test.rs:29:9
+   |
+LL | #[allow(test_group)]
+   |         ^^^^^^^^^^ help: change it to: `clippy::test_group`
+
 error: aborting due to 2 previous errors
 

src/test/ui/associated-type-bounds/duplicate.rs

@@ -157,10 +157,13 @@ trait TRW3<T> where T: Iterator<Item: 'static, Item: 'static> {}
 //~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
 trait TRSW1 where Self: Iterator<Item: Copy, Item: Send> {}
 //~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
+//~| ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
 trait TRSW2 where Self: Iterator<Item: Copy, Item: Copy> {}
 //~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
+//~| ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
 trait TRSW3 where Self: Iterator<Item: 'static, Item: 'static> {}
 //~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
+//~| ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
 trait TRA1 { type A: Iterator<Item: Copy, Item: Send>; }
 //~^ ERROR the value of the associated type `Item` (from trait `std::iter::Iterator`) is already specified [E0719]
 trait TRA2 { type A: Iterator<Item: Copy, Item: Copy>; }