Consider this basic example:

fn main() { std::thread::sleep(std::time::Duration::from_secs_f64(1.0)); }

When compiled with cargo build and the following Cargo.toml:

[profile.dev] debug = false strip = "symbols"

we see the following profile with samply record:

That is, all symbols are still there. However, when we instead build with

[profile.dev] debug = false strip = "debuginfo"

we see the following profile:

I believe this is a bug, as the documentation for strip specifies that symbols is supposed to be a more aggressive stripping than debuginfo, which is supposed to leave backtrace information mostly intact. We see the opposite behavior.

The following lines of code are suspect:

-S on rust-objcopy is documented as such:

 -S Alias for --strip-all 

It does not seem appropriate to be used in the Debuginfo branch, but omitted in the Symbols branch.