1 error[E0010]: allocations are not allowed in constants
2 --> $DIR/E0010-teach.rs:16:24
4 16 | const CON : Box<i32> = box 0; //~ ERROR E0010
5 | ^^^^^ allocation not allowed in constants
7 = note: The value of statics and constants must be known at compile time, and they live for the entire lifetime of a program. Creating a boxed value allocates memory on the heap at runtime, and therefore cannot be done at compile time.
9 error: aborting due to previous error