bootloader not compiling due to missing `compiler-builtins-mem` with latest nightly

[iTitus]

After the latest nightly update the bootloader 0.11.3 dependency does not compile anymore.
Probably caused by rust-lang/rust#108865.

cargo run
   Compiling bootloader v0.11.3
error: failed to run custom build command for `bootloader v0.11.3`                                                                                                      
                                                                                                                                                                        
Caused by:                                                                                                                                                              
  process didn't exit successfully: `...\target\debug\build\bootloader-3f3360a7d583746b\build-script-build` (exit code: 101)
  --- stderr                                                                                                                                                                                                                                                                          
      Updating crates.io index                                                                                                                                          
    Installing bootloader-x86_64-bios-boot-sector v0.11.3                                                                                                                                                                                                                           
      Updating crates.io index
    Installing bootloader-x86_64-bios-stage-2 v0.11.3
      Updating crates.io index
    Installing bootloader-x86_64-bios-stage-4 v0.11.3
      Updating crates.io index
    Installing bootloader-x86_64-bios-stage-3 v0.11.3
      Updating crates.io index
  warning: package `spin v0.9.5` in Cargo.lock is yanked in registry `crates-io`, consider running without --locked
      Updating crates.io index
  error: failed to compile `bootloader-x86_64-bios-boot-sector v0.11.3`, intermediate artifacts can be found at `C:\Users\iTitus\AppData\Local\Temp\cargo-install096Gcd`

  Caused by:
    Package `test v0.0.0 (C:\Users\iTitus\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\test)` does not have the feature `compiler-builtins-mem`
  thread 'main' panicked at 'failed to build bios boot sector', C:\Users\iTitus\.cargo\registry\src\index.crates.io-6f17d22bba15001f\bootloader-0.11.3\build.rs:151:9
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
  error: failed to compile `bootloader-x86_64-bios-stage-2 v0.11.3`, intermediate artifacts can be found at `C:\Users\iTitus\AppData\Local\Temp\cargo-installFtwmto`
  error: failed to compile `bootloader-x86_64-bios-stage-4 v0.11.3`, intermediate artifacts can be found at `C:\Users\iTitus\AppData\Local\Temp\cargo-installSRvl3I`

  Caused by:
    Package `test v0.0.0 (C:\Users\iTitus\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\test)` does not have the feature `compiler-builtins-mem`
  error: failed to compile `bootloader-x86_64-bios-stage-3 v0.11.3`, intermediate artifacts can be found at `C:\Users\iTitus\AppData\Local\Temp\cargo-installmnRzgw`

  Caused by:
    Package `test v0.0.0 (C:\Users\iTitus\.rustup\toolchains\nightly-x86_64-pc-windows-msvc\lib\rustlib\src\rust\library\test)` does not have the feature `compiler-builtins-mem`

[bjorn3]

-Zbuild-std is broken with latest nightly due to a change of the standard library: https://rust-lang.zulipchat.com/#narrow/stream/246057-t-cargo/topic/build-std.20failing

[iTitus]

was fixed in rust