Thread Panic to leave type 'std::mem::ManuallyDrop<xlib_xcb::xcb::Xlib_xcb>' uninitialized

[aknautiyal]

on running on Linux, cargo run --release gives:

thread 'main' panicked at 'attempted to leave type std::mem::ManuallyDrop<xlib_xcb::Xlib_xcb> uninitialized, which is invalid', /rustc/d3fb005a39e62501b8b0b356166e515ae24e2e54/src/libcore/mem/mod.rs:655:5

Setup: Ubuntu 20.04 (also tried with 18.04) rust version : 1.45.2