regression on -current with rust
 

rust doesn't build anymore in -current:
----------------------
Hmm... Looks like a unified diff to me...
The text leading up to this was:
--------------------------
|--- ./compiler/rustc_llvm/build.rs.orig 2020-11-16 08:01:53.000000000 -0600
|+++ ./compiler/rustc_llvm/build.rs 2020-11-19 13:46:21.222785372 -0600
--------------------------
patching file compiler/rustc_llvm/build.rs
Using Plan A...
Hunk #1 succeeded at 218 (offset -16 lines).
done
extracting /tmp/rustc-1.54.0-src/build/cache/2021-06-17/rust-std-1.53.0-x86_64-unknown-linux-gnu.tar.xz
Traceback (most recent call last):
File "/tmp/rustc-1.54.0-src/./x.py", line 27, in <module>
bootstrap.main()
File "/tmp/rustc-1.54.0-src/src/bootstrap/bootstrap.py", line 1195, in main
bootstrap(help_triggered)
File "/tmp/rustc-1.54.0-src/src/bootstrap/bootstrap.py", line 1161, in bootstrap
build.download_toolchain()
File "/tmp/rustc-1.54.0-src/src/bootstrap/bootstrap.py", line 413, in download_toolchain
self._download_component_helper(filename, pattern, tarball_suffix, stage0)
File "/tmp/rustc-1.54.0-src/src/bootstrap/bootstrap.py", line 527, in _download_component_helper
unpack(tarball, tarball_suffix, self.bin_root(stage0), match=pattern, verbose=self.verbose)
File "/tmp/rustc-1.54.0-src/src/bootstrap/bootstrap.py", line 122, in unpack
for member in tar.getnames():
File "/usr/lib64/python3.9/tarfile.py", line 1807, in getnames
return [tarinfo.name for tarinfo in self.getmembers()]
File "/usr/lib64/python3.9/tarfile.py", line 1799, in getmembers
self._load() # all members, we first have to
File "/usr/lib64/python3.9/tarfile.py", line 2388, in _load
tarinfo = self.next()
File "/usr/lib64/python3.9/tarfile.py", line 2319, in next
self.fileobj.seek(self.offset - 1)
File "/usr/lib64/python3.9/lzma.py", line 261, in seek
return self._buffer.seek(offset, whence)
File "/usr/lib64/python3.9/_compression.py", line 143, in seek
data = self.read(min(io.DEFAULT_BUFFER_SIZE, offset))
File "/usr/lib64/python3.9/_compression.py", line 99, in read
raise EOFError("Compressed file ended before the "
EOFError: Compressed file ended before the end-of-stream marker was reached
----------------------------------

No problem here - tested both building with the installed Rust compiler and also using the bootstrap tarballs.

It looks possible that you've obtained corrupted bootstrap tarballs somehow.

You're right, one package hadn't the right size.
Thanks Sir.