error: written amount is not handled. Use `Write::write_all` instead
  --> $DIR/unused_io_amount.rs:7:5
   |
LL |     s.write(b"test")?;
   |     ^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::unused-io-amount` implied by `-D warnings`

error: read amount is not handled. Use `Read::read_exact` instead
  --> $DIR/unused_io_amount.rs:9:5
   |
LL |     s.read(&mut buf)?;
   |     ^^^^^^^^^^^^^^^^^

error: written amount is not handled. Use `Write::write_all` instead
  --> $DIR/unused_io_amount.rs:14:5
   |
LL |     s.write(b"test").unwrap();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

error: read amount is not handled. Use `Read::read_exact` instead
  --> $DIR/unused_io_amount.rs:16:5
   |
LL |     s.read(&mut buf).unwrap();
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

error: read amount is not handled
  --> $DIR/unused_io_amount.rs:20:5
   |
LL |     s.read_vectored(&mut [io::IoSliceMut::new(&mut [])])?;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: written amount is not handled
  --> $DIR/unused_io_amount.rs:21:5
   |
LL |     s.write_vectored(&[io::IoSlice::new(&[])])?;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 6 previous errors