3rd party objects missing from nightly-2019-10-12

[jethrogb]

$ rustup toolchain add nightly-2019-10-11
$ rustup toolchain add nightly-2019-10-12
$ rustup target add --toolchain nightly-2019-10-11 x86_64-fortanix-unknown-sgx
$ rustup target add --toolchain nightly-2019-10-12 x86_64-fortanix-unknown-sgx
$ ls .rustup/toolchains/nightly-2019-10-11-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-fortanix-unknown-sgx/lib/libunwind.a
.rustup/toolchains/nightly-2019-10-11-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-fortanix-unknown-sgx/lib/libunwind.a
$ ls .rustup/toolchains/nightly-2019-10-12-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-fortanix-unknown-sgx/lib/libunwind.a
ls: cannot access '.rustup/toolchains/nightly-2019-10-12-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-fortanix-unknown-sgx/lib/libunwind.a': No such file or directory

[jethrogb]

x86_64-unknown-linux-musl is also affected

Checkout the size difference:

$ rustup target add --toolchain nightly-2019-10-12 x86_64-unknown-linux-musl
info: downloading component 'rust-std' for 'x86_64-unknown-linux-musl'
 16.2 MiB /  16.2 MiB (100 %)   3.6 MiB/s ETA:   0 s                
info: installing component 'rust-std' for 'x86_64-unknown-linux-musl'
$ rustup target add --toolchain nightly-2019-10-11 x86_64-unknown-linux-musl
info: downloading component 'rust-std' for 'x86_64-unknown-linux-musl'
172.9 MiB / 172.9 MiB (100 %)   3.8 MiB/s ETA:   0 s                
info: installing component 'rust-std' for 'x86_64-unknown-linux-musl'

Link error when trying to build a musl binary:

  = note: cc: error: crt1.o: No such file or directory
          cc: error: crti.o: No such file or directory
          cc: error: crtn.o: No such file or directory

[mati865]

I checked rust-std, rustc and rustc-dev components and libs mentioned above are totally gone.

@rustbot modify labels: +T-release +C-bug

[mati865]

Tier-1 windows-gnu toolchain is also broken:

  = note: gcc.exe: error: crt2.o: No such file or directory
          gcc.exe: error: rsbegin.o: No such file or directory
          gcc.exe: error: rsend.o: No such file or directory