Build failure (exclusive range pattern syntax is experimental)

Attempting to build (0.4.9) gives an build error: ``` error[E0658]: exclusive range pattern syntax is experimental --> src/ui/peakmeter.rs:84:25 | 84 | 0..GREEN_LIMIT => color_green, | ^^^^^^^^^^^^^^ | = note: see issue #37854 <https://github.com/rust-lang/rust/issues/37854> for more information = help: use an inclusive range pattern, like N..=M error[E0658]: exclusive range pattern syntax is experimental --> src/ui/peakmeter.rs:85:25 | 85 | GREEN_LIMIT..YELLOW_LIMIT => color_yellow, | ^^^^^^^^^^^^^^^^^^^^^^^^^ | = note: see issue #37854 <https://github.com/rust-lang/rust/issues/37854> for more information = help: use an inclusive range pattern, like N..=M ``` Build command: ``` meson compile -C build ```