Random layout bug about tui-rs HOT 4 CLOSED

thread 'main' panicked at 'attempt to add with overflow', /home/xav/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.2.0/src/layout.rs:57:9
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::print
             at /checkout/src/libstd/sys_common/backtrace.rs:68
             at /checkout/src/libstd/sys_common/backtrace.rs:57
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/panicking.rs:381
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:397
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:577
   5: std::panicking::begin_panic
             at /checkout/src/libstd/panicking.rs:538
   6: std::panicking::begin_panic_fmt
             at /checkout/src/libstd/panicking.rs:522
   7: rust_begin_unwind
             at /checkout/src/libstd/panicking.rs:498
   8: core::panicking::panic_fmt
             at /checkout/src/libcore/panicking.rs:71
   9: core::panicking::panic
             at /checkout/src/libcore/panicking.rs:51
   10: tui::layout::Rect::right
             at /home/xav/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.2.0/src/layout.rs:57
   11: tui::widgets::Widget::background
             at /home/xav/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.2.0/src/widgets/mod.rs:54
   12: <tui::widgets::block::Block<'a> as tui::widgets::Widget>::draw
             at /home/xav/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.2.0/src/widgets/block.rs:107
   13: <tui::terminal::Terminal<B>>::render
             at /home/xav/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.2.0/src/terminal.rs:103
   14: tui::widgets::Widget::render
             at /home/xav/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.2.0/src/widgets/mod.rs:65
   15: endmic::draw::{{closure}}
             at src/main.rs:361
   16: tui::layout::Group::render
             at /home/xav/.cargo/registry/src/github.com-1ecc6299db9ec823/tui-0.2.0/src/layout.rs:330
   17: endmic::draw
             at src/main.rs:352
   18: endmic::main::run
             at src/main.rs:344
   19: endmic::main
             at ./<main macros>:14
   20: std::rt::lang_start::{{closure}}
             at /checkout/src/libstd/rt.rs:74
   21: std::panicking::try::do_call
             at /checkout/src/libstd/rt.rs:59
             at /checkout/src/libstd/panicking.rs:480
   22: __rust_maybe_catch_panic
             at /checkout/src/libpanic_unwind/lib.rs:101
   23: std::rt::lang_start_internal
             at /checkout/src/libstd/panicking.rs:459
             at /checkout/src/libstd/panic.rs:365
             at /checkout/src/libstd/rt.rs:58
   24: std::rt::lang_start
             at /checkout/src/libstd/rt.rs:74
   25: main
   26: __libc_start_main
   27: _start