Failed to parse compiler message

[alopatindev]

$ rustc --version
rustc 1.46.0 (04488afe3 2020-08-24)

$ cargo new parsing-bug && echo 'fn main() {format_xml::xml! {<A><A><A><A></A></A><A></A><A><A><A>true</A></A></A><A><A><A>0</A></A><A><A><A>{a}</A></A></A><A><A>"A"</A>if let Some(a)=(a){<A>{a}</A>}</A></A></A></A>};}' > parsing-bug/src/main.rs && cd parsing-bug && echo 'format_xml = "0.1.5"' >> Cargo.toml && cargo build --message-format=json-diagnostic-rendered-ansi > out.txt
     Created binary (application) `parsing-bug` package
    Updating crates.io index
   Compiling format_xml v0.1.5
   Compiling parsing-bug v0.1.0 (/home/al/tmp/parsing-bug)
error: could not compile `parsing-bug`.

To learn more, run the command again with --verbose.

fn main() {
    let s = include_str!("../../parsing-bug/out.txt");
    for message in cargo_metadata::Message::parse_stream(s.as_bytes()) {
        match message.unwrap() {
            cargo_metadata::Message::TextLine(_) => panic!("failed to parse"),
            _ => (),
        }
    }
}

[alopatindev]

Actually caused by serde_json

fn main() {
    let s = include_str!("../../parsing-bug/out.txt");
    for i in s.lines() {
        if let Err(e) = serde_json::from_str::<serde_json::Value>(&i) {
            println!("{}", e);
        }
    }
}

recursion limit exceeded at line 1 column 28572

There's a hardcoded remaining_depth in both serde_json and serde_yaml