Panic with closest_point on segment vs trimesh

[ColonelThirtyTwo]

Reproduction

use ncollide3d::na::{Point3, Vector3};

fn main() {

	let verts = vec![Point3::new(1.0f32, 1.0, 1.0), Point3::new(-1.0, 1.0, 1.0), Point3::new(-1.0, -1.0, 1.0), Point3::new(1.0, 1.0, 1.0), Point3::new(-1.0, -1.0, 1.0), Point3::new(1.0, -1.0, 1.0), Point3::new(1.0, -1.0, -1.0), Point3::new(1.0, -1.0, 1.0), Point3::new(-1.0, -1.0, 1.0), Point3::new(1.0, -1.0, -1.0), Point3::new(-1.0, -1.0, 1.0), Point3::new(-1.0, -1.0, -1.0), Point3::new(-1.0, -1.0, -1.0), Point3::new(-1.0, -1.0, 1.0), Point3::new(-1.0, 1.0, 1.0), Point3::new(-1.0, -1.0, -1.0), Point3::new(-1.0, 1.0, 1.0), Point3::new(-1.0, 1.0, -1.0), Point3::new(-1.0, 1.0, -1.0), Point3::new(1.0, 1.0, -1.0), Point3::new(1.0, -1.0, -1.0), Point3::new(-1.0, 1.0, -1.0), Point3::new(1.0, -1.0, -1.0), Point3::new(-1.0, -1.0, -1.0), Point3::new(1.0, 1.0, -1.0), Point3::new(1.0, 1.0, 1.0), Point3::new(1.0, -1.0, 1.0), Point3::new(1.0, 1.0, -1.0), Point3::new(1.0, -1.0, 1.0), Point3::new(1.0, -1.0, -1.0), Point3::new(-1.0, 1.0, -1.0), Point3::new(-1.0, 1.0, 1.0), Point3::new(1.0, 1.0, 1.0), Point3::new(-1.0, 1.0, -1.0), Point3::new(1.0, 1.0, 1.0), Point3::new(1.0, 1.0, -1.0)];
	let indices = vec![Point3::new(0usize, 1, 2), Point3::new(3, 4, 5), Point3::new(6, 7, 8), Point3::new(9, 10, 11), Point3::new(12, 13, 14), Point3::new(15, 16, 17), Point3::new(18, 19, 20), Point3::new(21, 22, 23), Point3::new(24, 25, 26), Point3::new(27, 28, 29), Point3::new(30, 31, 32), Point3::new(33, 34, 35)];
	let mesh = ncollide3d::shape::TriMesh::new(verts, indices, None);
	
	let ray = ncollide3d::query::Ray { origin: Point3::new(7.2657557, -6.8810306, 4.931747), dir: Vector3::new(-0.8729342, 0.41952112, -0.24897367) };
	
	let closest = ncollide3d::query::closest_points(
		&ncollide3d::na::Isometry3::identity(),
		&ncollide3d::shape::Segment {
			a: ray.origin,
			b: ray.point_at(99999.9),
		},
		&ncollide3d::na::Isometry3::identity(),
		&mesh,
		2.0
	);
	println!("Closest: {:?}" ,closest);
}

Causes a panic:

thread 'main' panicked at 'The composite shape must not be empty.', /home/col/.cargo/registry/src/github.com-1ecc6299db9ec823/ncollide3d-0.26.1/src/query/closest_points/closest_points_composite_shape_shape.rs:24:10
stack backtrace:
   0:     0x561764860df0 - std::backtrace_rs::backtrace::libunwind::trace::h72c2fb8038f1bbee
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
   1:     0x561764860df0 - std::backtrace_rs::backtrace::trace_unsynchronized::h1e3b084883f1e78c
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/../../backtrace/src/backtrace/mod.rs:66
   2:     0x561764860df0 - std::sys_common::backtrace::_print_fmt::h3bf6a7ebf7f0394a
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/sys_common/backtrace.rs:79
   3:     0x561764860df0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h2e8cb764b7fe02e7
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/sys_common/backtrace.rs:58
   4:     0x56176487e00c - core::fmt::write::h7a1184eaee6a8644
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/core/src/fmt/mod.rs:1080
   5:     0x56176485efe2 - std::io::Write::write_fmt::haeeb374d93a67eac
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/io/mod.rs:1516
   6:     0x561764862e7d - std::sys_common::backtrace::_print::h1d14a7f6ad632dc8
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/sys_common/backtrace.rs:61
   7:     0x561764862e7d - std::sys_common::backtrace::print::h301abac8bb2e3e81
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/sys_common/backtrace.rs:48
   8:     0x561764862e7d - std::panicking::default_hook::{{closure}}::hde0cb80358a6920a
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/panicking.rs:208
   9:     0x561764862b28 - std::panicking::default_hook::h9b1a691049a0ec8f
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/panicking.rs:227
  10:     0x561764863501 - std::panicking::rust_panic_with_hook::h2bdec87b60580584
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/panicking.rs:577
  11:     0x5617648630a9 - std::panicking::begin_panic_handler::{{closure}}::h101ca09d9df5db47
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/panicking.rs:484
  12:     0x56176486125c - std::sys_common::backtrace::__rust_end_short_backtrace::h3bb85654c20113ca
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/sys_common/backtrace.rs:153
  13:     0x561764863069 - rust_begin_unwind
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/std/src/panicking.rs:483
  14:     0x56176487bee1 - core::panicking::panic_fmt::h48c31e1e3d550146
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/core/src/panicking.rs:85
  15:     0x56176487bc73 - core::option::expect_failed::hf3f43f1792267e24
                               at /rustc/7eac88abb2e57e752f3302f02be5f3ce3d7adfb4/library/core/src/option.rs:1226
  16:     0x561764807a8f - core::option::Option<T>::expect::h7e919d77919eca17
                               at /home/col/.rustup/toolchains/stable-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/option.rs:346
  17:     0x5617647ff62b - ncollide3d::query::closest_points::closest_points_composite_shape_shape::closest_points_composite_shape_shape::h3089a621794318cc
                               at /home/col/.cargo/registry/src/github.com-1ecc6299db9ec823/ncollide3d-0.26.1/src/query/closest_points/closest_points_composite_shape_shape.rs:22