cargo build fails with no associated item named `BitOr`

[cxbrooks]

I'm having problems building.

Under

bash-3.2$ rustc --version
rustc 1.14.0-nightly (3f4408347 2016-10-27)

I got:

    Compiling rustyline v0.2.2
error: no method named `char_at` found for type `&std::string::String` in the current scope
   --> /Users/cxh/.cargo/registry/src/github.com-1ecc6299db9ec823/rustyline-0.2.2/src/lib.rs:106:26

rustyline 0.2.1 had a similar problem

Possible solution: use a version of Rust from around the time of the last update to the js.rs repo:

rustup install nightly-2016-04-18
rustup default nightly-2016-04-18

However, with rustc nightly-2016-04-18:

cargo clean
cargo build

fails with:

   Compiling jsrs-parser v0.1.0 (https://github.com/rustoscript/js.rs-parser.git#bcb4bd2c)
/Users/cxh/.cargo/git/checkouts/js.rs-parser-6ae31b434aeca629/master/src/lalr.rs:263013:5: 263013:17 error: no associated item named `BitOr` found for type `jsrs_common::ast::BinOp` in the current scope
/Users/cxh/.cargo/git/checkouts/js.rs-parser-6ae31b434aeca629/master/src/lalr.rs:263013     BinOp::BitOr
  ^~~~~~~~~~~~

Any ideas?