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From: Michael Butler <imb@protected-networks.net>
Subject: rust broken?
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Date: Thu, 7 Jun 2018 11:44:53 -0400
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In response to a Firefox update, I tried to build the new version.
However, rust now fails with a core-dump in the build process.

checking for libffi > 3.0.9... yes
checking MOZ_FFI_CFLAGS... -I/usr/local/lib/libffi-3.2.1/include
checking MOZ_FFI_LIBS... -L/usr/local/lib -lffi
checking for rustc... /usr/local/bin/rustc
checking for cargo... /usr/local/bin/cargo
checking rustc version...
DEBUG: Executing: `/usr/local/bin/rustc --version --verbose`
DEBUG: The command returned non-zero exit status -12.
DEBUG: Its output was:
DEBUG: | rustc 1.26.0
DEBUG: | binary: rustc
DEBUG: | commit-hash: unknown
DEBUG: | commit-date: unknown
DEBUG: | host: x86_64-unknown-freebsd
DEBUG: | release: 1.26.0
ERROR: Command `/usr/local/bin/rustc --version --verbose` failed with
exit status -12.

Attempts to rebuild rust (and cargo) from the bootstrap files fail in
similar fashion.

On a machine running a SVN r334538 kernel but more recent user-land, it
builds successfully. With (the only difference being) a kernel at SVN
r334748, it does not.

Any hints/thoughts?

	imb