42f03539ca
I found this because we only had two test cases in total for this lint. It turns out the functionality is fully covered by rustc these days. [Playground Examples](https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&gist=eb8ee6db389c77180c9fb152d3c608f4) changelog: Deprecate `unused_collect` lint. This is fully covered by rustc's `#[must_use]` on `collect` cc #2846
110 lines
3.2 KiB
Plaintext
110 lines
3.2 KiB
Plaintext
error: infinite iteration detected
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--> $DIR/infinite_iter.rs:10:5
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LL | repeat(0_u8).collect::<Vec<_>>(); // infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: lint level defined here
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--> $DIR/infinite_iter.rs:8:8
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LL | #[deny(clippy::infinite_iter)]
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| ^^^^^^^^^^^^^^^^^^^^^
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error: infinite iteration detected
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--> $DIR/infinite_iter.rs:11:5
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LL | (0..8_u32).take_while(square_is_lower_64).cycle().count(); // infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: infinite iteration detected
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--> $DIR/infinite_iter.rs:12:5
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LL | (0..8_u64).chain(0..).max(); // infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: infinite iteration detected
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--> $DIR/infinite_iter.rs:17:5
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LL | / (0..8_u32)
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LL | | .rev()
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LL | | .cycle()
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LL | | .map(|x| x + 1_u32)
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LL | | .for_each(|x| println!("{}", x)); // infinite iter
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| |________________________________________^
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error: infinite iteration detected
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--> $DIR/infinite_iter.rs:23:5
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LL | (0_usize..).flat_map(|x| 0..x).product::<usize>(); // infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: infinite iteration detected
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--> $DIR/infinite_iter.rs:24:5
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LL | (0_u64..).filter(|x| x % 2 == 0).last(); // infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: possible infinite iteration detected
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--> $DIR/infinite_iter.rs:31:5
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LL | (0..).zip((0..).take_while(square_is_lower_64)).count(); // maybe infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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note: lint level defined here
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--> $DIR/infinite_iter.rs:29:8
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LL | #[deny(clippy::maybe_infinite_iter)]
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: possible infinite iteration detected
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--> $DIR/infinite_iter.rs:32:5
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LL | repeat(42).take_while(|x| *x == 42).chain(0..42).max(); // maybe infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: possible infinite iteration detected
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--> $DIR/infinite_iter.rs:33:5
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LL | / (1..)
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LL | | .scan(0, |state, x| {
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LL | | *state += x;
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LL | | Some(*state)
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LL | | })
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LL | | .min(); // maybe infinite iter
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| |______________^
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error: possible infinite iteration detected
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--> $DIR/infinite_iter.rs:39:5
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LL | (0..).find(|x| *x == 24); // maybe infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^^^
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error: possible infinite iteration detected
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--> $DIR/infinite_iter.rs:40:5
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LL | (0..).position(|x| x == 24); // maybe infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: possible infinite iteration detected
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--> $DIR/infinite_iter.rs:41:5
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LL | (0..).any(|x| x == 24); // maybe infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^
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error: possible infinite iteration detected
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--> $DIR/infinite_iter.rs:42:5
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LL | (0..).all(|x| x == 24); // maybe infinite iter
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| ^^^^^^^^^^^^^^^^^^^^^^
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error: infinite iteration detected
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--> $DIR/infinite_iter.rs:65:31
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LL | let _: HashSet<i32> = (0..).collect(); // Infinite iter
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| ^^^^^^^^^^^^^^^
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= note: `#[deny(clippy::infinite_iter)]` on by default
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error: aborting due to 14 previous errors
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