error: internal compiler error: compiler/rustc_const_eval/src/interpret/operator.rs:LL:CC: unsized type for `NullaryOp::SizeOf` --> $SRC_DIR/core/src/mem/mod.rs:LL:COL Box query stack during panic: #0 [eval_to_allocation_raw] const-evaluating + checking `Inline::{constant#0}` #1 [eval_to_valtree] evaluating type-level constant ... and 2 other queries... use `env RUST_BACKTRACE=1` to see the full query stack error: aborting due to 1 previous error