Failed to run custom build

I'm trying to run the bench tests for Block-STM and I keep running into this error:

error: failed to run custom build command for `librocksdb-sys v6.20.3`Caused by:  process didn't exit successfully: `/home/ubuntu/Block-STM/target/release/build/librocksdb-sys-06f571cb87f75164/build-script-build` (exit status: 101)  --- stderr  thread 'main' panicked at '"enum_(unnamed_at_rocksdb/include/rocksdb/c_h_854_1)" is not a valid Ident', /home/ubuntu/.cargo/registry/src/github.com-1ecc6299db9ec823/proc-macro2-1.0.36/src/fallback.rs:708:9  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

I've tried installing clang, I've downloaded and rebuilt rust-rocksdb, I've even installed the dev package for ubuntu.

$ sudo apt-get install librocksdb-dev

nothing has worked.

Any and all help is appreciated.