Program terminate with unexpected SIGABRT when using panic = "abort"

[arnaudgolfouse]

Problem
My program terminate with SIGABRT unexpectedly.

Steps

1. In Cargo.toml:

   [dependencies]
   syn = { version = "1.0.60", default-features = false, features = ["parsing", "full"] }
   thiserror = "1.0.23"
   
   [profile.dev]
   panic = "abort"

2. And in main.rs

   fn main() {
       let _ = syn::parse_str::<syn::Expr>("");
   }

3. run cargo run (on rust stable 1.49): the ouput is

   fish: “cargo run” terminated by signal SIGABRT (Abort)
   

I suspect this belongs in the cargo issues, because removing either

thiserror = "1.0.23"

or

panic = "abort"

Fixes the issue.

Notes

Output of cargo version:

cargo 1.49.0 (d00d64df9 2020-12-05)

On ubuntu 20.04.1, rust 1.49 stable, target x86_64-unknown-linux-gnu

[ehuss]

I think this is working as expected. Adding thiserror enables the proc-macro feature on syn, which is incompatible with panic="abort". See dtolnay/proc-macro2#218 for more information.

[arnaudgolfouse]

Wow, ok... well at least this is not a bug in cargo 😅
Thank you for the response !