clippy::mixed_attributes_style: Checks for items that have the same kind of attributes with mixed styles (inner/outer)

#[custom_attribute]
pub fn foo() {
    #![my_crate::custom_attribute]
}

#[cfg(linux)]
pub fn foo() {
    #![cfg(windows)]
}

#[allow(clippy::mixed_attributes_style)]
fn my_function() { /* ... */ }

[lints.clippy]
mixed_attributes_style = "allow"

cargo clippy -- -A clippy::mixed-attributes-style

Clippy's own documentation

What it does

Checks for items that have the same kind of attributes with mixed styles (inner/outer).

Why is this bad?

Having both style of said attributes makes it more complicated to read code.

Known problems

This lint currently has false-negatives when mixing same attributes but they have different path symbols, for example:

#[custom_attribute]
pub fn foo() {
    #![my_crate::custom_attribute]
}

Example

#[cfg(linux)]
pub fn foo() {
    #![cfg(windows)]
}

Use instead:

#[cfg(linux)]
#[cfg(windows)]
pub fn foo() {
}

From the Clippy lint list (0.1.99), part of the Rust project, MIT or Apache-2.0. Official entry.

Related lints

• needless_returnunneeded `return` statement
• new_without_defaultChecks for public types with a pub fn new() -> Self method and no implementation of Default
• len_zeroChecks for getting the length of something via .len() just to compare to zero, and suggests using .is_empty() where applicable
• mem_replace_with_defaultreplacing a value of type `T` with `T::default()`
• missing_enforced_import_renamesChecks for imports that do not rename the item as specified in the enforced-import-renames config option. Note: Even though this lint is warn-by-default, it will only trigger if import renames are defined in the clippy.toml file
• missing_safety_docChecks for the doc comments of publicly visible unsafe functions and warns if there is no # Safety section
• mixed_case_hex_literalsinconsistent casing in hexadecimal literal
• module_inceptionChecks for modules that have the same name as their parent module
• multiple_bound_locationsbound is defined in more than one place

All 847 Clippy lints · Rust compiler errors · Cargo.toml checker