are the docs and/or packages broken?
https://docs.julialang.org/en/latest/manual/profile/
suggests
julia> Pkg.add("Profile")
ERROR: unknown package Profile
macro expansion at ./pkg/entry.jl:53 [inlined]
(::Base.Pkg.Entry.##1#3{String,Base.Pkg.Types.VersionSet})() at ./task.jl:335
Stacktrace:
[1] sync_end() at ./task.jl:287
[2] macro expansion at ./task.jl:303 [inlined]
[3] add(::String, ::Base.Pkg.Types.VersionSet) at ./pkg/entry.jl:51
[4] (::Base.Pkg.Dir.##4#7{Array{Any,1},Base.Pkg.Entry.#add,Tuple{String}})() at ./pkg/dir.jl:36
[5] cd(::Base.Pkg.Dir.##4#7{Array{Any,1},Base.Pkg.Entry.#add,Tuple{String}}, ::String) at ./file.jl:70
[6] #cd#1(::Array{Any,1}, ::Function, ::Function, ::String, ::Vararg{String,N} where N) at ./pkg/dir.jl:36
[7] add(::String) at ./pkg/pkg.jl:117
probably a simple beginner’s error, though…