tmux-thumbs: Error building (termbox) on macOS

I am getting the following error when attempting to build this crate on macOS Catalina (10.15.3 (19D76)):

❯ env RUST_BACKTRACE=1 cargo build
   Compiling termbox-sys v0.2.11
   Compiling num-traits v0.1.43
   Compiling regex v1.3.1
   Compiling tempfile v3.1.0
   Compiling gag v0.1.10
error: failed to run custom build command for `termbox-sys v0.2.11`

Caused by:
  process didn't exit successfully: `/Users/jonathan/.tmux/plugins/tmux-thumbs/target/debug/build/termbox-sys-c35f0e040836f872/build-script-build` (exit code: 101)
--- stdout
running: "rm" "-rf" ".termbox"
running: "git" "clone" "https://github.com/nsf/termbox" ".termbox"
waf configure: setting CFLAGS to: `-m64 -fPIC`
running: "./waf" "configure" "--prefix=/"
Setting top to                           : /Users/jonathan/.cargo/registry/src/github.com-1ecc6299db9ec823/termbox-sys-0.2.11/.termbox 
Setting out to                           : /Users/jonathan/.cargo/registry/src/github.com-1ecc6299db9ec823/termbox-sys-0.2.11/.termbox/build 
Checking for 'clang' (C compiler)        : /usr/bin/clang 
'configure' finished successfully (0.227s)

--- stderr
Cloning into '.termbox'...
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/libcore/result.rs:1188:5
stack backtrace:
   0: std::sys_common::at_exit_imp::push
   1: core::fmt::ArgumentV1::show_usize
   2: std::io::Write::write_fmt
   3: std::panicking::default_hook::{{closure}}
   4: std::panicking::default_hook
   5: <std::panicking::begin_panic::PanicPayload<A> as core::panic::BoxMeUp>::get
   6: std::panicking::try::do_call
   7: core::panicking::panic_fmt
             at src/libcore/panicking.rs:84
   8: core::result::unwrap_failed
             at src/libcore/result.rs:1188
   9: core::result::Result<T,E>::unwrap
             at /rustc/5e1a799842ba6ed4a57e91f7ab9435947482f7d8/src/libcore/result.rs:956
  10: build_script_build::run
             at ./build.rs:88
  11: build_script_build::configure
             at ./build.rs:58
  12: build_script_build::main
             at ./build.rs:11
  13: std::rt::lang_start::{{closure}}
  14: std::panicking::try::do_call
  15: panic_unwind::dwarf::eh::read_encoded_pointer
  16: <std::panicking::begin_panic::PanicPayload<A> as core::panic::BoxMeUp>::get
  17: std::rt::lang_start
  18: build_script_build::run
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

warning: build failed, waiting for other jobs to finish...
error: build failed