error[E0608]: cannot index into a value of type `({integer}, {integer}, {integer})`
  --> $DIR/issue-27842.rs:14:13
   |
14 |     let _ = tup[0];
   |             ^^^^^^ help: to access tuple elements, use: `tup.0`

error[E0608]: cannot index into a value of type `({integer}, {integer}, {integer})`
  --> $DIR/issue-27842.rs:19:13
   |
19 |     let _ = tup[i];
   |             ^^^^^^
   |
   = help: to access tuple elements, use tuple indexing syntax (e.g. `tuple.0`)

error: aborting due to 2 previous errors

If you want more information on this error, try using "rustc --explain E0608"