Crash on mouse over window on Mac OS Mojave

[zyvitski]

Mac version: macOS 10.14.2 (18C54)
using rtb-rs-tester plugin.

See stack frame #10 below.

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff7096a23e __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff70a20c1c pthread_kill + 285
2 libsystem_c.dylib 0x00007fff708d31c9 abort + 127
3 com.rust-vst.rtb-rs-tester 0x0000000118b61fa9 std::sys::unix::abort_internal::h713ccba0dfca9bca + 9
4 com.rust-vst.rtb-rs-tester 0x0000000118b5f9cb std::sys_common::util::abort::h82c60f1d5da40cd1 + 91
5 com.rust-vst.rtb-rs-tester 0x0000000118b6116e rust_panic + 110
6 com.rust-vst.rtb-rs-tester 0x0000000118b610f9 std::panicking::rust_panic_with_hook::h1798b5b942285930 + 681
7 com.rust-vst.rtb-rs-tester 0x0000000118b60aed std::panicking::continue_panic_fmt::ha01863ad25865ce9 + 157
8 com.rust-vst.rtb-rs-tester 0x0000000118b60a41 std::panicking::begin_panic_fmt::h4e044a96e16ac88b + 97
9 com.rust-vst.rtb-rs-tester 0x0000000118b46333 objc::runtime::Object::get_ivar::hc34633c9fd2c9cfb + 627
10 com.rust-vst.rtb-rs-tester 0x0000000118b41d7d rtb_rs::platform::cocoa::view::view_class::_$u7b$$u7b$closure$u7d$$u7d$::processNSEvent::h29866c0ca3cc062b + 1533 (view.rs:69)
11 com.apple.AppKit 0x00007fff40c04436 -[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 6946
12 com.apple.AppKit 0x00007fff40c026c9 -[NSWindow(NSEventRouting) sendEvent:] + 481
13 com.apple.AppKit 0x00007fff40a9feb0 -[NSApplication(NSEvent) sendEvent:] + 1708
14 com.ableton.live 0x0000000100b3321f 0x100000000 + 11743775
15 com.apple.AppKit 0x00007fff40a8d19d -[NSApplication run] + 755
16 com.ableton.live 0x0000000100b3ffb8 0x100000000 + 11796408
17 com.ableton.live 0x0000000100248589 0x100000000 + 2393481
18 com.ableton.live 0x0000000100001de4 0x100000000 + 7652