Yul compilation failed: Illegal token: Octal numbers not allowed.

[agroce]

Compiling this file:

contract Foo:
    baz: map<u256, u256>
    def assign(val: u256) -> u256:
        self.assign(000)
        return self.baz[0]

thread 'main' panicked at 'Yul compilation failed: {"errors":[{"component":"general","formattedMessage":"ParserError: Illegal token: Octal numbers not allowed.\n --> input.yul:1:198:\n  |\n1 |  ... $val) -> return_val { pop($$assign(000)) { return_val := sloadn(dualkec ...\n  |                                         ^\n\n","message":"Illegal token: Octal numbers not allowed.","severity":"error","sourceLocation":{"end":198,"file":"input.yul","start":197},"type":"ParserError"},{"component":"general","formattedMessage":"ParserError: Expected keyword \"data\" or \"object\" or \"}\".\n --> input.yul:1:198:\n  |\n1 |  ... $val) -> return_val { pop($$assign(000)) { return_val := sloadn(dualkec ...\n  |                                         ^\n\n","message":"Expected keyword \"data\" or \"object\" or \"}\".","severity":"error","sourceLocation":{"end":198,"file":"input.yul","start":197},"type":"ParserError"}]}', compiler/src/lib.rs:45:27
stack backtrace:
   0: rust_begin_unwind
             at /rustc/c0b64d97beebb09325b5587abed39f4f1621026f/library/std/src/panicking.rs:493:5
   1: std::panicking::begin_panic_fmt
             at /rustc/c0b64d97beebb09325b5587abed39f4f1621026f/library/std/src/panicking.rs:435:5
   2: fe_compiler::compile
   3: fe::main
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
Aborted

On latest github master, built with

[profile.dev]
debug = true
panic = "abort"

for fuzzing. Using https://github.com/agroce/afl-compiler-fuzzer