Arch Linux

tl;dr: Running `crystal build`, `crystal run`, `crystal eval` all fail HARD when invoked.


Package versions:

* crystal : 0.30.0-3
* core/libevent: 2.1.11-1

Running `crystal -v`:

Crystal 0.30.0 (2019-08-06)

LLVM: 8.0.1
Default target: x86_64-pc-linux-gnu

Minimal steps to reproduce #1:

1. `$ crystal eval "puts 1+1"`

Expected:
"2"

Actual:

1. `crystal` outputs "[warn] event_reinit: forked from the event_loop." 511 times.
2. Something (a subprocess? it's not in the stderr or stdout for the parent process) outputs "Unhandled exception in spawn: Channel is closed (Channel::ClosedError)" many times for each line of 1) above
3. The process appears to hang until killed with C-c.


Minimal steps to reproduce #2:

1. `$ crystal build hello.cr` (attached)

Expected:

executable file `hello` created that outputs "Hello" to stdout.

Actual:

As per example 1, with additional

`Unhandled exception in spawn: Channel is closedException (Channel::ClosedErrorChannel is closedUnhandled exception in spawn: [warn] Epoll ADD(4) on 8 retried as MOD; that failed too: No such file or directory`

lines sprinkled throughout.

Tested on my Dell XPS15, and in a clean Docker `archlinux/base` container in which I had run `pacman -Sy crystal shards`.