error: expected one of `)`, `,`, or `::`, found `(`
  --> $DIR/malformed-derive-entry.rs:11:14
   |
LL | #[derive(Copy(Bad))]
   |              ^ expected one of `)`, `,`, or `::` here

error: expected one of `)`, `,`, or `::`, found `=`
  --> $DIR/malformed-derive-entry.rs:15:14
   |
LL | #[derive(Copy="bad")]
   |              ^ expected one of `)`, `,`, or `::` here

warning: empty trait list in `derive`
  --> $DIR/malformed-derive-entry.rs:19:1
   |
LL | #[derive()]
   | ^^^^^^^^^^^

warning: empty trait list in `derive`
  --> $DIR/malformed-derive-entry.rs:23:1
   |
LL | #[derive]
   | ^^^^^^^^^

error: aborting due to 2 previous errors