Error during rust embedded setup

i am using fedora 31 while running the command sudo dnf install arm-none-eabi-gdb openocd qemu-system-arm
Output

Last metadata expiration check: 2:02:31 ago on Mon 17 Feb 2020 09:22:11 PM IST.
No match for argument: arm-none-eabi-gdb
Package openocd-0.10.0-14.fc31.x86_64 is already installed.
Package qemu-system-arm-2:4.1.1-1.fc31.x86_64 is already installed.
Error: Unable to find a match: arm-none-eabi-gdb

No match for argument: arm-none-eabi-gdb

how to install arm-none-eabi-gdb in fedora 31