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rust
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346aec9b02f3c74f3fce97fd6bda24709d220e49
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.
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src
/
test
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ui
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feature-gates
/
feature-gate-marker_trait_attr.rs
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use
std
::
fmt
::{
Debug
,
Display
};
#[
marker
]
trait
ExplicitMarker
{}
//~^ ERROR the `#[marker]` attribute is an experimental feature
impl
<
T
:
Display
>
ExplicitMarker
for
T
{}
impl
<
T
:
Debug
>
ExplicitMarker
for
T
{}
fn
main
()
{}