1452190 - Crash running rustup-init on 32-bit linux

Status: NEW

(Firefox Build System :: Bootstrap Configuration, defect)

Description

[Akkana Peck]

Trying to make an artifact build on my 32-bit netbook, I downloaded the bz2 tarball specified in http://ftp.mozilla.org/pub/firefox/releases/59.0.2/SOURCE (I first tried to use hg, but my attempts to "hg up -c release" always failed with "  abort: HTTP request error (incomplete response; expected 5328 bytes got 2672)"). Then I ran ./mach bootstrap, specified a desktop artifact build, let it install the first few prerequisites, but then it died trying to check rust:

Could not find a Rust compiler.
Will try to install Rust.
Downloading rustup-init... Ok
Running rustup-init...
Error running mach:

    ['bootstrap']

The error occurred in code that was called by the mach command. This is either
a bug in the called code itself or in the way that mach is calling it.

You should consider filing a bug for this issue.

If filing a bug, please include the full output of mach, including this error
message.

The details of the failure are as follows:

OSError: [Errno 8] Exec format error

  File "/home/akkana/outsrc/mozilla-release/python/mozboot/mozboot/mach_commands.py", line 32, in bootstrap
    bootstrapper.bootstrap()
  File "/home/akkana/outsrc/mozilla-release/python/mozboot/mozboot/bootstrap.py", line 301, in bootstrap
    self.instance.ensure_rust_modern()
  File "/home/akkana/outsrc/mozilla-release/python/mozboot/mozboot/base.py", line 644, in ensure_rust_modern
    self.install_rust()
  File "/home/akkana/outsrc/mozilla-release/python/mozboot/mozboot/base.py", line 687, in install_rust
    '--default-host', platform, ])
  File "/usr/lib/python2.7/subprocess.py", line 181, in check_call
    retcode = call(*popenargs, **kwargs)
  File "/usr/lib/python2.7/subprocess.py", line 168, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/usr/lib/python2.7/subprocess.py", line 390, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1024, in _execute_child
    raise child_exception
zsh: exit 1     ./mach bootstrap

First, I thought the point of artifact builds was that things like a Rust compiler weren't needed? But if it is needed, it may be downloading a 64-bit rustup even on 32-bit platforms. I can't tell for sure because it has a "finally" clause that removes the rustup-init while crashing, so I can't check the file type.

Comment 1

[Akkana Peck]

This happens with a regular (non-artifact) build as well. Looks like there's no way to run mach bootstrap on 32-bit x86.

The problem is in mozboot/mozboot/rust.py line 21:

    elif sys.platform.startswith('linux'):
        return 'x86_64-unknown-linux-gnu'

That's a bad assumption: Linux runs on lots of platforms, not just x86_64.

I downloaded https://static.rust-lang.org/rustup.sh and it installed rust just fine, so it's not that rust isn't available, it's just that mozilla's rust.py doesn't check the platform properly.