linking now fails with unwind failures

[clux]

Latest cron build failed with a missing -lunwind

error: linking with `cc` failed: exit code: 1
  |
  = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-nostdlib" "-Wl,--eh-frame-hdr" "-Wl,-(" "-m64" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/crt1.o" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/crti.o" "-L" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib" "/volume/target/x86_64-unknown-linux-musl/debug/deps/plaincrate-54d1030939d14f9b.0.o" "-o" "/volume/target/x86_64-unknown-linux-musl/debug/deps/plaincrate-54d1030939d14f9b" "/volume/target/x86_64-unknown-linux-musl/debug/deps/plaincrate-54d1030939d14f9b.crate.allocator.o" "-Wl,--gc-sections" "-Wl,-z,relro,-z,now" "-nodefaultlibs" "-L" "/volume/target/x86_64-unknown-linux-musl/debug/deps" "-L" "/volume/target/debug/deps" "-L" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib" "-Wl,-Bstatic" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/liballoc_jemalloc-ab5831f4fba53ade.rlib" "/volume/target/x86_64-unknown-linux-musl/debug/deps/librand-caa253f168104b0f.rlib" "/volume/target/x86_64-unknown-linux-musl/debug/deps/liblibc-2322a01ee5fd0496.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libstd-1873b4d191d228e8.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libpanic_unwind-fa52c59d2108c1f8.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libunwind-45a286e82269a40e.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/liballoc_system-1c88582d9022c1cc.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/liblibc-d9d4ae8ab67a6001.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/liballoc-d1d3fb714ff1a835.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libstd_unicode-10859fb08aa219d9.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/librand-655f47aee8a3420b.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libcore-da02dfafc4660314.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libcompiler_builtins-126bb39b1b53af10.rlib" "-l" "unwind" "-static" "-Wl,-Bdynamic" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/crtn.o" "-Wl,-)"
  = note: /usr/bin/ld: cannot find -lunwind
          collect2: error: ld returned 1 exit status

Apparently that's needed now. Tried making a new image and add an apt-get install libunwind-dev, but that shifts the error to the more confusing:

error: linking with `cc` failed: exit code: 1
  |
  = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-nostdlib" "-Wl,--eh-frame-hdr" "-Wl,-(" "-m64" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/crt1.o" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/crti.o" "-L" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib" "/volume/target/x86_64-unknown-linux-musl/debug/deps/plaincrate-54d1030939d14f9b.0.o" "-o" "/volume/target/x86_64-unknown-linux-musl/debug/deps/plaincrate-54d1030939d14f9b" "/volume/target/x86_64-unknown-linux-musl/debug/deps/plaincrate-54d1030939d14f9b.crate.allocator.o" "-Wl,--gc-sections" "-Wl,-z,relro,-z,now" "-nodefaultlibs" "-L" "/volume/target/x86_64-unknown-linux-musl/debug/deps" "-L" "/volume/target/debug/deps" "-L" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib" "-Wl,-Bstatic" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/liballoc_jemalloc-ab5831f4fba53ade.rlib" "/volume/target/x86_64-unknown-linux-musl/debug/deps/librand-caa253f168104b0f.rlib" "/volume/target/x86_64-unknown-linux-musl/debug/deps/liblibc-2322a01ee5fd0496.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libstd-1873b4d191d228e8.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libpanic_unwind-fa52c59d2108c1f8.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libunwind-45a286e82269a40e.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/liballoc_system-1c88582d9022c1cc.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/liblibc-d9d4ae8ab67a6001.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/liballoc-d1d3fb714ff1a835.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libstd_unicode-10859fb08aa219d9.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/librand-655f47aee8a3420b.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libcore-da02dfafc4660314.rlib" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/libcompiler_builtins-126bb39b1b53af10.rlib" "-l" "unwind" "-static" "-Wl,-Bdynamic" "/usr/local/lib/rustlib/x86_64-unknown-linux-musl/lib/crtn.o" "-Wl,-)"
  = note: /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libunwind.a(elf64.o): In function `xz_uncompressed_size':
          /build/libunwind-VOtC4T/libunwind-1.1/src/elfxx.c:194: undefined reference to `lzma_stream_footer_decode'
          /build/libunwind-VOtC4T/libunwind-1.1/src/elfxx.c:201: undefined reference to `lzma_index_buffer_decode'
          /build/libunwind-VOtC4T/libunwind-1.1/src/elfxx.c:205: undefined reference to `lzma_index_size'
          /build/libunwind-VOtC4T/libunwind-1.1/src/elfxx.c:210: undefined reference to `lzma_index_end'
          /build/libunwind-VOtC4T/libunwind-1.1/src/elfxx.c:207: undefined reference to `lzma_index_uncompressed_size'
          /build/libunwind-VOtC4T/libunwind-1.1/src/elfxx.c:210: undefined reference to `lzma_index_end'
          /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/libunwind.a(elf64.o): In function `_Uelf64_extract_minidebuginfo':
          /build/libunwind-VOtC4T/libunwind-1.1/src/elfxx.c:278: undefined reference to `lzma_stream_buffer_decode'
          collect2: error: ld returned 1 exit status
          

error: aborting due to previous error

This is also on the plain crate which doesn't use lzma. Probably need to compile libunwind with musl?

[clux]

Ah, this just merged: rust-lang/rust#40113

[clux]

Latest build passed tests :)