interpreter-in-browser doesn't build

[erszcz]

I'm trying to build the examples. spawn-chain builds and works fine, but with interpreter-in-browser I get multiple errors of this type:

   Compiling libeir_diagnostics v0.1.0 (https://github.com/eirproject/eir.git?branch=lumen#2124ea35)
error[E0080]: erroneous constant used
  --> /Users/erszcz/.cargo/git/checkouts/eir-9a91440c84f5797a/2124ea3/libeir_diagnostics/src/index.rs:15:73
   |
15 |     pub const UNKNOWN: Self = Self(unsafe { NonZeroUsize::new_unchecked(Self::UNKNOWN_SRC_ID) });
   |                                                                         ^^^^^^^^^^^^^^^^^^^^ referenced constant has errors

error[E0080]: evaluation of constant expression failed
  --> /Users/erszcz/.cargo/git/checkouts/eir-9a91440c84f5797a/2124ea3/libeir_diagnostics/src/index.rs:49:20
   |
49 |         if self == Self::UNKNOWN {
   |                    ^^^^^^^^^^^^^ referenced constant has errors
...
error: aborting due to 8 previous errors

All but the first one are about Self::UNKNOWN.

My env:

$ rustc --version
rustc 1.45.0-nightly (769d12eec 2020-05-12)

[KronicDeth]

The interpreter broke with the DynOp changes to EIR.