[...]

286450K .......... .......... .......... .......... .......... 99% 48.9M 0s
286500K .......... .......... .......... .......... .......... 99% 37.9M 0s
286550K .......... .......... .......... .......... .......... 99% 5.22M 0s
286600K .......... .......... .......... .......... .......... 99% 79.0M 0s
286650K .......... .......... .......... .......... .......... 99% 77.4M 0s
286700K .......... .......... .......... .......... .......... 99% 77.4M 0s
286750K .......... .......... .......... .......... .......... 99% 19.8M 0s
286800K .......... .......... .......... .......... .......... 99%  395M 0s
286850K .......... .......... .......... .......... .......... 99% 14.1M 0s
286900K .......... .......... .......... .......... .......... 99% 62.1M 0s
286950K .......... .......... .......... .......... .......... 99% 75.2M 0s
287000K .......... .......... .......... .......... .......... 99% 61.1M 0s
287050K .......... .......... .......... .......... .......... 99% 26.6M 0s
287100K .......... .......... .......... .......... .......... 99% 2.96M 0s
287150K .......... .......... .......... .......... .......... 99% 47.4M 0s
287200K .......... .......... .......... .......... .......... 99% 58.1M 0s
287250K .                                                     100% 32.1M=16s
2019-09-21 17:35:42 (17.7 MB/s) - 'rust-1.36.0-i686-unknown-linux-gnu.tar.gz' saved [294145062/294145062]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/rust-1.37.0-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
HEAD is now at cb6bf53 up to 1.37.0
fatal: HEAD does not point to a branch
Building rust.spec with the following conditional flags:
 --with bootstrap
from available:
--with   :	 <bootstrap> full_debuginfo tests
--without:	 system_llvm
Writing git revision for tag auto/ti/rust-1.37.0-1
On detached HEAD. Use -r BRANCHNAME to override
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
Executing(--clean): env -i TMP=/home/users/builder/tmp HOME=/home/users/builder PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.53246
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf rustc-1.37.0-src
Begin-TLD-Builder-Info
Build-Time: user:25.42s sys:3.95s real:115.45s (faults io:415 non-io:116295)
Files queued for ftp:
 715509483 rust-1.37.0-1.src.rpm
       183 rust-1.37.0-1.src.rpm.uploadinfo
End-TLD-Builder-Info