```console
$ diff <(rustup target list | sed 's/ (installed)//' | grep -- "-none") <(rustc --print target-list | grep -- "-none")
4a5,6
> armv4t-none-eabi
> armv5te-none-eabi
5a8
> armv7a-none-eabihf
7a11,14
> armv8r-none-eabihf
> bpfeb-unknown-none
> bpfel-unknown-none
> hexagon-unknown-none-elf
9a17,24
> m68k-unknown-none-elf
> mips-mti-none-elf
> mipsel-mti-none-elf
> mipsel-unknown-none
> msp430-none-elf
> riscv32e-unknown-none-elf
> riscv32em-unknown-none-elf
> riscv32emc-unknown-none-elf
11a27
> riscv32ima-unknown-none-elf
16a33,35
> sparc-unknown-none-elf
> thumbv4t-none-eabi
> thumbv5te-none-eabi
24a44
> x86_64-unknown-linux-none
25a46,48
> xtensa-esp32-none-elf
> xtensa-esp32s2-none-elf
> xtensa-esp32s3-none-elf
```

That's what else is missing at Tier 2