[Bug] protoc-gen-prost 0.2.1 now is broken directly from cargo registry

[larry-aptos]

This can be reproduced on a fresh Ubuntu machine.

Repro steps

1. sudo apt update
2. sudo apt install curl build-essential -y
3. curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
4. source "$HOME/.cargo/env"
5. cargo install protoc-gen-prost

Current behavior:

error[E0603]: module `compiler` is private
  --> /home/larry/.cargo/registry/src/github.com-1ecc6299db9ec823/protoc-gen-prost-0.2.1/src/lib.rs:13:5
   |
13 |     compiler::{code_generator_response::File, CodeGeneratorRequest},
   |     ^^^^^^^^ private module
   |
note: the module `compiler` is defined here
  --> /home/larry/.cargo/registry/src/github.com-1ecc6299db9ec823/prost-types-0.11.7/src/lib.rs:15:1
   |
15 | mod compiler;
   | ^^^^^^^^^^^^

error[E0603]: module `compiler` is private
  --> /home/larry/.cargo/registry/src/github.com-1ecc6299db9ec823/protoc-gen-prost-0.2.1/src/generator.rs:3:18
   |
3  | use prost_types::compiler::{
   |                  ^^^^^^^^ private module
   |
note: the module `compiler` is defined here
  --> /home/larry/.cargo/registry/src/github.com-1ecc6299db9ec823/prost-types-0.11.7/src/lib.rs:15:1
   |
15 | mod compiler;
   | ^^^^^^^^^^^^

error[E0603]: module `compiler` is private
  --> /home/larry/.cargo/registry/src/github.com-1ecc6299db9ec823/protoc-gen-prost-0.2.1/src/generator/core.rs:2:18
   |
2  | use prost_types::compiler::code_generator_response::File;
   |                  ^^^^^^^^ private module
   |
note: the module `compiler` is defined here
  --> /home/larry/.cargo/registry/src/github.com-1ecc6299db9ec823/prost-types-0.11.7/src/lib.rs:15:1
   |
15 | mod compiler;
   | ^^^^^^^^^^^^

error[E0603]: module `compiler` is private
  --> /home/larry/.cargo/registry/src/github.com-1ecc6299db9ec823/protoc-gen-prost-0.2.1/src/generator/file_descriptor_set.rs:3:18
   |
3  | use prost_types::compiler::code_generator_response::File;
   |                  ^^^^^^^^ private module
   |
note: the module `compiler` is defined here
  --> /home/larry/.cargo/registry/src/github.com-1ecc6299db9ec823/prost-types-0.11.7/src/lib.rs:15:1
   |
15 | mod compiler;
   | ^^^^^^^^^^^^

error[E0282]: type annotations needed
  --> /home/larry/.cargo/registry/src/github.com-1ecc6299db9ec823/protoc-gen-prost-0.2.1/src/generator/core.rs:49:37
   |
49 |         request.write_to_file(move |buffer| {
   |                                     ^^^^^^
50 |             buffer.push_str("// @generated\n");
   |             ------ type must be known at this point
   |
help: consider giving this closure parameter an explicit type
   |
49 |         request.write_to_file(move |buffer: _| {
   |                                           +++

Some errors have detailed explanations: E0282, E0603.
For more information about an error, try `rustc --explain E0282`.
error: could not compile `protoc-gen-prost` due to 5 previous errors
warning: build failed, waiting for other jobs to finish...
error: failed to compile `protoc-gen-prost v0.2.1`, intermediate artifacts can be found at `/tmp/cargo-installZD0bjX

Expected behavior:

Install successfully.

[neoeinstein]

Will look into this. In the meantime, use --locked when doing an install to ensure that you're using the exact dependency versions that the package was published against.

[neoeinstein]

Put in a fix as tokio-rs/prost#824. Until that lands and is released, you'll want to use --locked.

[LucioFranco]

Yup, we will release a new version 0.11.8 with this fix and I will yank 0.11.7

[neoeinstein]

This should now be resolved. Thanks for the report!