feat(rust): switch to stable toolchain for now

pathfinder_simd uses a nightly feature that changed recently,
and as such fails to compile on nightly.
See

plotters-rs/plotters#548
servo/font-kit#233
servo/pathfinder#550

Author: MultisampledNight

config/zsh/zshrc

@@ -70,6 +70,7 @@ alias cfg='CARGO_PROFILE_RELEASE_DEBUG=true cargo flamegraph'
 
 alias gst='git status'
 alias gl='git log'
+alias glo='git log --oneline'
 alias grl='git reflog'
 alias gd='git diff'
 alias gds='git diff --staged'

nix/shells/rust/rust-toolchain

@@ -1 +1 @@
-nightly
+stable