# Objective - Many of our CI workflows contain a `NIGHTLY_TOOLCHAIN` environmental variable. - This specifies which nightly to use. If there is a bug in one of the nightlies, we can pin the toolchain to be an earlier version. - Both the daily and weekly workflows do not use the nightly compiler, but still have a `NIGHTLY_TOOLCHAIN` variable. ## Solution - Delete the unused variable.  | 
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| .. | ||
| action-on-PR-labeled.yml | ||
| ci-comment-failures.yml | ||
| ci.yml | ||
| daily.yml | ||
| dependencies.yml | ||
| docs.yml | ||
| post-release.yml | ||
| release.yml | ||
| validation-jobs.yml | ||
| weekly.yml | ||
| welcome.yml | ||