error: unused variable: `a`
  --> $DIR/param-attrs-cfg.rs:24:23
   |
LL |     #[cfg(something)] a: i32,
   |                       ^ help: consider prefixing with an underscore: `_a`
   |
note: lint level defined here
  --> $DIR/param-attrs-cfg.rs:5:9
   |
LL | #![deny(unused_variables)]
   |         ^^^^^^^^^^^^^^^^

error: unused variable: `b`
  --> $DIR/param-attrs-cfg.rs:30:23
   |
LL |     #[cfg(something)] b: i32,
   |                       ^ help: consider prefixing with an underscore: `_b`

error: unused variable: `c`
  --> $DIR/param-attrs-cfg.rs:32:40
   |
LL |     #[cfg_attr(nothing, cfg(nothing))] c: i32,
   |                                        ^ help: consider prefixing with an underscore: `_c`

error: unused variable: `a`
  --> $DIR/param-attrs-cfg.rs:83:27
   |
LL |         #[cfg(something)] a: i32,
   |                           ^ help: consider prefixing with an underscore: `_a`

error: unused variable: `b`
  --> $DIR/param-attrs-cfg.rs:89:27
   |
LL |         #[cfg(something)] b: i32,
   |                           ^ help: consider prefixing with an underscore: `_b`

error: unused variable: `c`
  --> $DIR/param-attrs-cfg.rs:91:44
   |
LL |         #[cfg_attr(nothing, cfg(nothing))] c: i32,
   |                                            ^ help: consider prefixing with an underscore: `_c`

error: unused variable: `b`
  --> $DIR/param-attrs-cfg.rs:59:27
   |
LL |         #[cfg(something)] b: i32,
   |                           ^ help: consider prefixing with an underscore: `_b`

error: unused variable: `c`
  --> $DIR/param-attrs-cfg.rs:61:44
   |
LL |         #[cfg_attr(nothing, cfg(nothing))] c: i32,
   |                                            ^ help: consider prefixing with an underscore: `_c`

error: unused variable: `a`
  --> $DIR/param-attrs-cfg.rs:41:27
   |
LL |         #[cfg(something)] a: i32,
   |                           ^ help: consider prefixing with an underscore: `_a`

error: unused variable: `b`
  --> $DIR/param-attrs-cfg.rs:48:27
   |
LL |         #[cfg(something)] b: i32,
   |                           ^ help: consider prefixing with an underscore: `_b`

error: unused variable: `c`
  --> $DIR/param-attrs-cfg.rs:50:44
   |
LL |         #[cfg_attr(nothing, cfg(nothing))] c: i32,
   |                                            ^ help: consider prefixing with an underscore: `_c`

error: unused variable: `b`
  --> $DIR/param-attrs-cfg.rs:70:27
   |
LL |         #[cfg(something)] b: i32,
   |                           ^ help: consider prefixing with an underscore: `_b`

error: unused variable: `c`
  --> $DIR/param-attrs-cfg.rs:72:44
   |
LL |         #[cfg_attr(nothing, cfg(nothing))] c: i32,
   |                                            ^ help: consider prefixing with an underscore: `_c`

error: aborting due to 13 previous errors