brew formula on linux requires gcc

[nonrational]

Pouring puma-dev from a bottle shouldn't require gcc. Low impact as I expect most people that have homebrew on linux also have brew install gcc'd in the past.

$ date; uname -a; brew -v
Thu Feb  4 09:10:57 AM EST 2021
Linux osboxes 5.8.0-25-generic #26-Ubuntu SMP Thu Oct 15 10:30:38 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Homebrew 2.7.7
Homebrew/linuxbrew-core (git revision 3e22a8; last commit 2021-02-04)

$ brew install -dv puma/puma/puma-dev
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/brew.rb (Formulary::TapLoader): loading /home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/puma/homebrew-puma/puma-dev.rb
==> Installing puma-dev from puma/puma
==> Downloading https://github.com/puma/puma-dev/releases/download/v0.15.2/puma-dev-0.15.2-linux-amd64.tar.gz
/usr/bin/curl --disable --globoff --show-error --user-agent Linuxbrew/2.7.7\ \(Linux\;\ x86_64\ Ubuntu\ 20.10\)\ curl/7.68.0 --header Accept-Language:\ en --retry 3 --location --silent --head --request GET https://github.com/puma/puma-dev/releases/download/v0.15.2/puma-dev-0.15.2-linux-amd64.tar.gz
Already downloaded: /home/osboxes/.cache/Homebrew/downloads/57fcc318f4953cf45412b788a444f7a23dc90995f9c3f412e32dc29825e7b1f2--puma-dev-0.15.2-linux-amd64.tar.gz
==> Verifying checksum for '57fcc318f4953cf45412b788a444f7a23dc90995f9c3f412e32dc29825e7b1f2--puma-dev-0.15.2-linux-amd64.tar.gz'
Error: The following formula cannot be installed from bottle and must be
built from source.
  puma-dev
Install Clang or run `brew install gcc`.
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/formula_installer.rb:391:in `install'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/cmd/install.rb:402:in `install_formula'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/cmd/install.rb:315:in `block in install'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/cmd/install.rb:313:in `each'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/cmd/install.rb:313:in `install'
/home/linuxbrew/.linuxbrew/Homebrew/Library/Homebrew/brew.rb:122:in `<main>'