Fix new renamed_and_removed_lints warning (#247)

I've verified that this now produces no warnings with Rust 1.26.1 and
1.28.0-nightly (c3b09c968 2018-05-27)

Gbp-Pq: Name u-0001-Fix-new-renamed_and_removed_lints-warning-247.patch

lldb_batchmode.py: try `import _thread` for Python 3

Gbp-Pq: Name u-0001-lldb_batchmode.py-try-import-_thread-for-Python-3.patch

rustc (1.32.0+dfsg1-1) unstable; urgency=medium

  * New upstream release.

[dgit import unpatched rustc 1.32.0+dfsg1-1]

Import rustc_1.32.0+dfsg1.orig.tar.xz

[dgit import orig rustc_1.32.0+dfsg1.orig.tar.xz]

Import rustc_1.32.0+dfsg1-1.debian.tar.xz

[dgit import tarball rustc 1.32.0+dfsg1-1 rustc_1.32.0+dfsg1-1.debian.tar.xz]