From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark H Weaver <mhw@netris.org>
Subject: Re: Rust 1.19 fails to build on i686 on =?utf-8?B?4oCYc3RhZ2lu?=
	=?utf-8?B?Z+KAmQ==?=
Date: Thu, 31 Jan 2019 00:51:41 -0500
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In-Reply-To: <87k1ioq21m.fsf@gnu.org> ("Ludovic
	\=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\=
	\=\?utf-8\?Q\?s\?\= message of "Mon, 28 Jan 2019 15:39:33 +0100")
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To: Ludovic =?utf-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: Guix-devel <guix-devel@gnu.org>

Hi Ludovic,

Ludovic Court=C3=A8s <ludo@gnu.org> writes:

> Rust fails to build on i686 on =E2=80=98staging=E2=80=99, so I don=E2=80=
=99t know if it=E2=80=99s
> deterministic (the =E2=80=9Cunexpected EOF=E2=80=9D reminds me of paralle=
l build issues
> with half-baked makefiles):
>
> BUILDING crates_io from crates-io v0.9.0 with features []
>> /gnu/store/fw4yy7cgb5ahs9s2ir00bawnsl5zj7db-mrustc-0.8.0/bin/mrustc src/=
tools/cargo/src/crates-io/lib.rs --crate-name crates_io --crate-type rlib -=
-crate-tag 0_9_0 -g --cfg debug_assertions -O -o output/cargo-build/libcrat=
es_io-0_9_0.hir -L output/cargo-build --extern curl=3Doutput/cargo-build/li=
bcurl-0_4_6.hir --extern error_chain=3Doutput/cargo-build/liberror_chain-0_=
10_0.hir --extern serde=3Doutput/cargo-build/libserde-1_0_6.hir --extern se=
rde_derive=3Doutput/cargo-build/libserde_derive-1_0_6.hir --extern serde_js=
on=3Doutput/cargo-build/libserde_json-1_0_2.hir --extern url=3Doutput/cargo=
-build/liburl-1_4_0.hir -L output -L /gnu/store/fw4yy7cgb5ahs9s2ir00bawnsl5=
zj7db-mrustc-0.8.0/lib/mrust
> munmap_chunk(): invalid pointer
> src/tools/cargo/src/crates-io/lib.rs:65: BUG:src/expand/proc_macro.cpp:94=
1: Unexpected EOF while reading from child process
> BUILD FAILED

FYI, this is not specific to the 'staging' branch.  The same error has
been happening on our 'master' branch since at least September 2018:

  https://hydra.gnu.org/job/gnu/master/rust-1.20.0.i686-linux/all

      Mark