For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:devel:languages:rust:rust-1.84/openSUSE_Tumbleweed/home:manfred-h:devel:languages:rust:rust-1.84.repo
zypper refresh
zypper install rust
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:devel:languages:rust:rust-1.84/openSUSE_Slowroll/home:manfred-h:devel:languages:rust:rust-1.84.repo
zypper refresh
zypper install rust
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:manfred-h:devel:languages:rust:rust-1.84/15.6/home:manfred-h:devel:languages:rust:rust-1.84.repo
zypper refresh
zypper install rust