Rubinius fails to build on Ubuntu 18.04 in GitHub Actions

[eregon]

Rubinius fails to build on Ubuntu 18.04 in GitHub Actions

[brixen]

@eregon I fixed some build issues on 18.04 so that building from a clone will work. I still need to fix building from a release tarball.

[brixen]

@eregon BTW, thanks for sharing the workflow, I should probably switch over to Actions from Travis.

[eregon]

The build seems to go further with 4.13, either building from the tarball or a git checkout, but eventually it hangs:
https://github.com/eregon/ruby-install-builder/runs/408608416

...
Sat, 25 Jan 2020 13:02:00 GMT Build time: 34.737315621 seconds
Sat, 25 Jan 2020 13:02:00 GMT 1: LD machine/test/runner
Sat, 25 Jan 2020 13:02:07 GMT Running 633 tests.........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................OK!
Sat, 25 Jan 2020 13:02:07 GMT bin/mspec:10: warning: Insecure world writable dir /home/runner in PATH, mode 040777
Sat, 25 Jan 2020 13:02:07 GMT rubinius 4.13 (10.0 806f3be4 2020-01-20 6.0.1) [x86_64-linux-gnu]
Sat, 25 Jan 2020 13:56:51 GMT ##[error]The operation was canceled.

From bin/mspec:10: warning: Insecure world writable dir /home/runner in PATH, mode 040777 it looks like it hangs when starting specs, or they take a really long time (>50min)?

Is there a way to disable running tests/specs and just build / install?

[eregon]

OK, looking at build.sh and Makefile, I should be able to just do ./configure && make && make install. I'll try that.

[eregon]

It builds fine with ./configure && make && make install on Ubuntu 16.04 and 18.04.

EDIT: macOS-related stuff moved to #3830

[eregon]

I moved the macOS-related SEGv to a separate issue:
#3830

This issue can be closed, it builds fine on Ubuntu now with ./configure && make && make install.