1 error[E0658]: use of unstable library feature 'fn_traits' (see issue #29625)
2 --> $DIR/feature-gate-unboxed-closures-method-calls.rs:14:7
4 LL | f.call(()); //~ ERROR use of unstable library feature 'fn_traits'
7 = help: add #![feature(fn_traits)] to the crate attributes to enable
9 error[E0658]: use of unstable library feature 'fn_traits' (see issue #29625)
10 --> $DIR/feature-gate-unboxed-closures-method-calls.rs:15:7
12 LL | f.call_mut(()); //~ ERROR use of unstable library feature 'fn_traits'
15 = help: add #![feature(fn_traits)] to the crate attributes to enable
17 error[E0658]: use of unstable library feature 'fn_traits' (see issue #29625)
18 --> $DIR/feature-gate-unboxed-closures-method-calls.rs:16:7
20 LL | f.call_once(()); //~ ERROR use of unstable library feature 'fn_traits'
23 = help: add #![feature(fn_traits)] to the crate attributes to enable
25 error: aborting due to 3 previous errors
27 For more information about this error, try `rustc --explain E0658`.