error[E0425]: cannot find value `HashesEntryLEN` in this scope
  --> $DIR/issue-109141.rs:10:32
   |
LL | struct EntriesBuffer(Box<[[u8; HashesEntryLEN]; 5]>);
   |                                ^^^^^^^^^^^^^^ not found in this scope
   |
help: you might be missing a const parameter
   |
LL | struct EntriesBuffer<const HashesEntryLEN: /* Type */>(Box<[[u8; HashesEntryLEN]; 5]>);
   |                     ++++++++++++++++++++++++++++++++++

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0425`.