1 error: the struct `#[repr(align(u16))]` attribute is experimental (see issue #33626)
2 --> $DIR/gated-features-attr-spans.rs:13:1
4 13 | #[repr(align(16))]
7 = help: add #![feature(repr_align)] to the crate attributes to enable
9 error: SIMD types are experimental and possibly buggy (see issue #27731)
10 --> $DIR/gated-features-attr-spans.rs:20:1
15 = help: add #![feature(repr_simd)] to the crate attributes to enable
17 warning: `#[must_use]` on methods is experimental (see issue #43302)
18 --> $DIR/gated-features-attr-spans.rs:27:5
20 27 | #[must_use] fn summon_weapon(&self) -> Weapon { self.weapon }
23 = help: add #![feature(fn_must_use)] to the crate attributes to enable
25 warning: `#[must_use]` on functions is experimental (see issue #43302)
26 --> $DIR/gated-features-attr-spans.rs:30:1
31 = help: add #![feature(fn_must_use)] to the crate attributes to enable
33 error: aborting due to 2 previous errors