Build step error for helloworld example

[flabbergastedbd]

Bug Report

Version

examples v0.1.0 (tonic/examples)
├── tonic v0.2.0 (tonic/tonic)
├── tonic-health v0.1.0 (tonic/tonic-health)
│   └── tonic v0.2.0 (tonic/tonic) (*)
│   └── tonic-build v0.2.0 (tonic/tonic-build)
└── tonic-build v0.2.0 (tonic/tonic-build) (*)

Platform

Linux arch0 5.6.7-arch1-1 #1 SMP PREEMPT Thu, 23 Apr 2020 09:13:56 +0000 x86_64 GNU/Linux

Linux Distribution: Arch Linux
System protoc version: libprotoc 3.11.4

Description

Had build.rs issues when using tonic in an application. Wanted to check if it is my code issues or system setup issues, hence tried with helloworld example in tonic which had the same build step error.

$ cargo run --bin helloworld-server
   Compiling tonic-health v0.1.0 (tonic/tonic-health)
   Compiling examples v0.1.0 (tonic/examples)
error: failed to run custom build command for `examples v0.1.0 (tonic/examples)`

Caused by:
  process didn't exit successfully: `tonic/target/debug/build/examples-8e69c115720c8c30/build-script-build` (exit code: 1)
warning: build failed, waiting for other jobs to finish...
error: failed to run custom build command for `tonic-health v0.1.0 (tonic/tonic-health)`

Caused by:
  process didn't exit successfully: `tonic/target/debug/build/tonic-health-0f64809ad5dfe82e/build-script-build` (exit code: 1)

Attempts

• Looked at couple of issues (tonic-examples build crashes: "No such file or directory" #102 ), OUT_DIR variable is being set right, dir exists with writable perms.
• Tried setting PROTOC, PROTOC_INCLUDE to system packages which didn't work.
• Able to compile using prost-build in build step (Just messages obviously).
• Ran build multiple times with RUST_BACKTRACE=full, RUST_LOG=trace - absolutely no extra output.

I expected to see: Some error message on what is going wrong, apart from build command failed with exit code 1.

[flabbergastedbd]

Never mind

rustup component add --toolchain stable rustfmt solved it. Toolchain had to be specified explicitly, I thought it would pick the default one