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rustc 1.37.0-nightly (5eeb567a2 2019-06-06)
binary: rustc
commit-hash: 5eeb567a27eba18420a620ca7d0c007e29d8bc0c
commit-date: 2019-06-06
host: x86_64-unknown-linux-gnu
release: 1.37.0-nightly
LLVM version: 8.0

I had a Command::new()....unwrap() and some methods in between that were also unwrapping their arguments.
The panic that I got however was not pointing to any of the unwrap()s but to the first line of the statement (the Command::new()) which is quite confusing.

Here is similar example:

 fn a(_: i32, _: i16, _: i8, _: i32, _: i16, _: i8) -> i32 {
    4
}

fn main() {
    let X: i32 = a(
        9,
        Some(4)
        .unwrap(),
        Some(7)
        .unwrap(),
        Some(9)
        .unwrap(),
        Some( // backtrace points here
        None
        )
        .unwrap()
        .unwrap(), // should point here
        7,
    );
}

the backtrace points to line 15 which contains Some( which is very confusing, imo it should point to line 19 which is the panicking unwrap()

Can reproduce on stable, beta and nightly.
Playground: https://play.rust-lang.org/?version=beta&mode=debug&edition=2018&gist=be591b1d4dbf5b729c5733a831c823e9