warning: irrefutable `if let` pattern
  --> $DIR/if-let.rs:6:16
   |
LL |               if let $p = $e $b
   |                  ^^^
...
LL | /     foo!(a, 1, {
LL | |         println!("irrefutable pattern");
LL | |     });
   | |______- in this macro invocation
   |
   = note: this pattern will always match, so the `if let` is useless
   = help: consider replacing the `if let` with a `let`
   = note: `#[warn(irrefutable_let_patterns)]` on by default
   = note: this warning originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: irrefutable `if let` pattern
  --> $DIR/if-let.rs:6:16
   |
LL |               if let $p = $e $b
   |                  ^^^
...
LL | /     bar!(a, 1, {
LL | |         println!("irrefutable pattern");
LL | |     });
   | |______- in this macro invocation
   |
   = note: this pattern will always match, so the `if let` is useless
   = help: consider replacing the `if let` with a `let`
   = note: this warning originates in the macro `foo` which comes from the expansion of the macro `bar` (in Nightly builds, run with -Z macro-backtrace for more info)

warning: irrefutable `if let` pattern
  --> $DIR/if-let.rs:26:8
   |
LL |     if let a = 1 {
   |        ^^^^^^^^^
   |
   = note: this pattern will always match, so the `if let` is useless
   = help: consider replacing the `if let` with a `let`

warning: irrefutable `if let` pattern
  --> $DIR/if-let.rs:30:8
   |
LL |     if let a = 1 {
   |        ^^^^^^^^^
   |
   = note: this pattern will always match, so the `if let` is useless
   = help: consider replacing the `if let` with a `let`

warning: irrefutable `if let` pattern
  --> $DIR/if-let.rs:40:15
   |
LL |     } else if let a = 1 {
   |               ^^^^^^^^^
   |
   = note: this pattern will always match, so the `if let` is useless
   = help: consider replacing the `if let` with a `let`

warning: irrefutable `if let` pattern
  --> $DIR/if-let.rs:46:15
   |
LL |     } else if let a = 1 {
   |               ^^^^^^^^^
   |
   = note: this pattern will always match, so the `if let` is useless
   = help: consider replacing the `if let` with a `let`

warning: 6 warnings emitted