[Windows] Cannot build ngrok-rust due to error of error[E0433]: failed to resolve: use of undeclared type ClientOptions

[koma-private]

I still need to stick to version "0.14.0-pre.16" of ngrok-rust due to compilation error.
I'd appreciate it if you could instruct me how to solve this issue.

My environment

• Windows (stable-x86_64-pc-windows-msvc)
• rustc 1.85.1 (4eb161250 2025-03-15)

Build Result

Version	Result
0.14.0-pre.16	OK
0.14.0-pre.17	ERROR
0.14.0-pre.18	ERROR
0.15.0	ERROR

Details of error

error[E0433]: failed to resolve: use of undeclared type ClientOptions

0.14.0-pre.17

0.14.0-pre.18

0.15.0

[ghost]

@koma-private - Hi Masanori! We are aware of the issue and currently working on it. I do not have an ETA for you but will keep this thread updated. Thank you for reaching out.

[koma-private]

@dthomasngrokker
thank you for working on this!

[ghost]

Hi @koma-private! I apologize for the wait. In your Cargo.toml, for the ngrok crate, do you have any features enabled? If not, could you add "hyper" and let me know if this resolves your issue?

[koma-private]

@dthomasngrokker

Thank you for your advice. I was able to build the program successfully.
This issue only occurred on Windows, not on macOS or Linux, so I didn't realize that I needed to add "hyper" to features.

Thank you for your support. I will close this issue.

Cargo.toml	Result	Details
ngrok = { version = "0.15.0" }	ERROR	error[E0433]: failed to resolve: use of undeclared type ClientOptions
ngrok = { version = "0.15.0", features = ["hyper"] }	OK