Tonic include problem

help
1

I have grpc server that complied and run ok until I updated tonic to the latest version. Now it fails to build

   Compiling tonic v0.9.1
error: couldn't read /Users/bihaber/crypto_service/target/debug/build/crypto_service-f8fe7ed5e86191b1/out/crypto.rs: No such file or directory (os error 2)
 --> src/lib.rs:3:5
  |
3 |     tonic::include_proto!("crypto");
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = 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)

How can I figure out what is going on in he macro? where is -Z defined?

2

Try the docs. Probably the issue is the one in the Note.

The note about -Z is talking about a rustc flag that you could use on nightly (e.g. RUSTFLAGS='-Z macro-backtrace' cargo build ...) to give more detailed, macro-related diagnostics. It can be useful when the macro is generating wonky code. Based on the error, I don't think anything like that is going on in this case; it's just looking for a file that doesn't exist.

1 Like
3

the file is in target. doesn't rebuilding the.project refresh files there.

4

Piling on. I've run into the same thing with the latest version 0.9.2 in an Alpine docker image on an M1 Mac host.