build error -- missing file?

[dan-da]

Seems this is supposed to be a generated source file. Am I doing something wrong?

$ cargo build
...
   Compiling bdk_esplora v0.2.0 (https://github.com/hoffmabc/bdk#695cbacb)
error: couldn't read /home/danda/dev/openbazaar3-rust/target/debug/build/openbazaar-lib-ab0c6801ca30382d/out/openbazaar_api.rs: No such file or directory (os error 2)
  --> openbazaar-lib/src/lib.rs:14:5
   |
14 |     tonic::include_proto!("openbazaar_api");
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: this error originates in the macro `include` which comes from the expansion of the macro `tonic::include_proto` (in Nightly builds, run with -Z macro-backtrace for more info)

btw, I'm at:

$ git log | head -n 1
commit 12f0bd43d7db197dd0fc3893f7ecb37f78c3c695

$ cargo --version
cargo 1.67.1 (8ecd4f20a 2023-01-10)

$ rustup show | tail -n 6
active toolchain
----------------

stable-x86_64-unknown-linux-gnu (default)
rustc 1.67.1 (d5a82bbd2 2023-02-07)