Fix clippy tests that trigger for_loop_over_fallibles lint

src/tools/clippy/tests/ui/for_loop_unfixable.rs

@@ -8,6 +8,7 @@
     clippy::for_kv_map
 )]
 #[allow(clippy::linkedlist, clippy::unnecessary_mut_passed, clippy::similar_names)]
+#[allow(for_loop_over_fallibles)]
 fn main() {
     let vec = vec![1, 2, 3, 4];
 

src/tools/clippy/tests/ui/for_loop_unfixable.stderr

@@ -1,5 +1,5 @@
 error: you are iterating over `Iterator::next()` which is an Option; this will compile but is probably not what you want
-  --> $DIR/for_loop_unfixable.rs:14:15
+  --> $DIR/for_loop_unfixable.rs:15:15
    |
 LL |     for _v in vec.iter().next() {}
    |               ^^^^^^^^^^^^^^^^^

src/tools/clippy/tests/ui/for_loops_over_fallibles.rs

@@ -1,4 +1,5 @@
 #![warn(clippy::for_loops_over_fallibles)]
+#![allow(for_loop_over_fallibles)]
 
 fn for_loops_over_fallibles() {
     let option = Some(1);

src/tools/clippy/tests/ui/for_loops_over_fallibles.stderr

@@ -1,5 +1,5 @@
 error: for loop over `option`, which is an `Option`. This is more readably written as an `if let` statement
-  --> $DIR/for_loops_over_fallibles.rs:9:14
+  --> $DIR/for_loops_over_fallibles.rs:10:14
    |
 LL |     for x in option {
    |              ^^^^^^
@@ -8,71 +8,71 @@ LL |     for x in option {
    = help: consider replacing `for x in option` with `if let Some(x) = option`
 
 error: for loop over `option`, which is an `Option`. This is more readably written as an `if let` statement
-  --> $DIR/for_loops_over_fallibles.rs:14:14
+  --> $DIR/for_loops_over_fallibles.rs:15:14
    |
 LL |     for x in option.iter() {
    |              ^^^^^^
    |
    = help: consider replacing `for x in option.iter()` with `if let Some(x) = option`
 
 error: for loop over `result`, which is a `Result`. This is more readably written as an `if let` statement
-  --> $DIR/for_loops_over_fallibles.rs:19:14
+  --> $DIR/for_loops_over_fallibles.rs:20:14
    |
 LL |     for x in result {
    |              ^^^^^^
    |
    = help: consider replacing `for x in result` with `if let Ok(x) = result`
 
 error: for loop over `result`, which is a `Result`. This is more readably written as an `if let` statement
-  --> $DIR/for_loops_over_fallibles.rs:24:14
+  --> $DIR/for_loops_over_fallibles.rs:25:14
    |
 LL |     for x in result.iter_mut() {
    |              ^^^^^^
    |
    = help: consider replacing `for x in result.iter_mut()` with `if let Ok(x) = result`
 
 error: for loop over `result`, which is a `Result`. This is more readably written as an `if let` statement
-  --> $DIR/for_loops_over_fallibles.rs:29:14
+  --> $DIR/for_loops_over_fallibles.rs:30:14
    |
 LL |     for x in result.into_iter() {
    |              ^^^^^^
    |
    = help: consider replacing `for x in result.into_iter()` with `if let Ok(x) = result`
 
 error: for loop over `option.ok_or("x not found")`, which is a `Result`. This is more readably written as an `if let` statement
-  --> $DIR/for_loops_over_fallibles.rs:33:14
+  --> $DIR/for_loops_over_fallibles.rs:34:14
    |
 LL |     for x in option.ok_or("x not found") {
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider replacing `for x in option.ok_or("x not found")` with `if let Ok(x) = option.ok_or("x not found")`
 
 error: you are iterating over `Iterator::next()` which is an Option; this will compile but is probably not what you want
-  --> $DIR/for_loops_over_fallibles.rs:39:14
+  --> $DIR/for_loops_over_fallibles.rs:40:14
    |
 LL |     for x in v.iter().next() {
    |              ^^^^^^^^^^^^^^^
    |
    = note: `#[deny(clippy::iter_next_loop)]` on by default
 
 error: for loop over `v.iter().next().and(Some(0))`, which is an `Option`. This is more readably written as an `if let` statement
-  --> $DIR/for_loops_over_fallibles.rs:44:14
+  --> $DIR/for_loops_over_fallibles.rs:45:14
    |
 LL |     for x in v.iter().next().and(Some(0)) {
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider replacing `for x in v.iter().next().and(Some(0))` with `if let Some(x) = v.iter().next().and(Some(0))`
 
 error: for loop over `v.iter().next().ok_or("x not found")`, which is a `Result`. This is more readably written as an `if let` statement
-  --> $DIR/for_loops_over_fallibles.rs:48:14
+  --> $DIR/for_loops_over_fallibles.rs:49:14
    |
 LL |     for x in v.iter().next().ok_or("x not found") {
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = help: consider replacing `for x in v.iter().next().ok_or("x not found")` with `if let Ok(x) = v.iter().next().ok_or("x not found")`
 
 error: this loop never actually loops
-  --> $DIR/for_loops_over_fallibles.rs:60:5
+  --> $DIR/for_loops_over_fallibles.rs:61:5
    |
 LL | /     while let Some(x) = option {
 LL | |         println!("{}", x);
@@ -83,7 +83,7 @@ LL | |     }
    = note: `#[deny(clippy::never_loop)]` on by default
 
 error: this loop never actually loops
-  --> $DIR/for_loops_over_fallibles.rs:66:5
+  --> $DIR/for_loops_over_fallibles.rs:67:5
    |
 LL | /     while let Ok(x) = result {
 LL | |         println!("{}", x);