error[E0512]: cannot transmute between types of different sizes, or dependently-sized types
  --> $DIR/main.rs:16:5
   |
LL |     transmute(x)
   |     ^^^^^^^^^
   |
   = note: source type: `<C as TypeConstructor<'a>>::T` (size can vary because of <C as TypeConstructor>::T)
   = note: target type: `<C as TypeConstructor<'b>>::T` (size can vary because of <C as TypeConstructor>::T)

error[E0512]: cannot transmute between types of different sizes, or dependently-sized types
  --> $DIR/main.rs:20:17
   |
LL |     let x: u8 = transmute(10u16);
   |                 ^^^^^^^^^
   |
   = note: source type: `u16` (16 bits)
   = note: target type: `u8` (8 bits)

error[E0512]: cannot transmute between types of different sizes, or dependently-sized types
  --> $DIR/main.rs:24:17
   |
LL |     let x: u8 = transmute("test");
   |                 ^^^^^^^^^
   |
   = note: source type: `&str` ($STR bits)
   = note: target type: `u8` (8 bits)

error[E0512]: cannot transmute between types of different sizes, or dependently-sized types
  --> $DIR/main.rs:29:18
   |
LL |     let x: Foo = transmute(10);
   |                  ^^^^^^^^^
   |
   = note: source type: `i32` (32 bits)
   = note: target type: `Foo` (0 bits)

error: aborting due to 4 previous errors

For more information about this error, try `rustc --explain E0512`.