error[E0689]: can't call method `neg` on ambiguous numeric type `{float}`
  --> $DIR/method-on-ambiguous-numeric-type.rs:20:17
   |
LL |     let x = 2.0.neg();
   |                 ^^^
help: you must specify a concrete type for this numeric value, like `f32`
   |
LL |     let x = 2.0_f32.neg();
   |             ^^^^^^^

error[E0689]: can't call method `neg` on ambiguous numeric type `{float}`
  --> $DIR/method-on-ambiguous-numeric-type.rs:24:15
   |
LL |     let x = y.neg();
   |               ^^^
help: you must specify a type for this binding, like `f32`
   |
LL |     let y: f32 = 2.0;
   |         ^^^^^^

error[E0689]: can't call method `pow` on ambiguous numeric type `{integer}`
  --> $DIR/method-on-ambiguous-numeric-type.rs:29:26
   |
LL |     for i in 0..100 {
   |         - you must specify a type for this binding, like `i32`
LL |         println!("{}", i.pow(2));
   |                          ^^^

error[E0689]: can't call method `pow` on ambiguous numeric type `{integer}`
  --> $DIR/method-on-ambiguous-numeric-type.rs:34:15
   |
LL |     local_bar.pow(2);
   |               ^^^
help: you must specify a type for this binding, like `i32`
   |
LL |     ($ident:ident) => { let $ident: i32 = 42; }
   |                             ^^^^^^^^^^^

error[E0689]: can't call method `pow` on ambiguous numeric type `{integer}`
  --> $DIR/method-on-ambiguous-numeric-type.rs:40:9
   |
LL |     mac!(bar);
   |     ---------- you must specify a type for this binding, like `i32`
LL |     bar.pow(2);
   |         ^^^
   |
   = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)

error: aborting due to 5 previous errors

For more information about this error, try `rustc --explain E0689`.