since this morning, up
(on Julia 0.7.0 and 1.0.0, Win 64) gives the following message on two separate Win10 PCs
Resolving package versions...
Updating `C:\Users\psoderlind\.julia\environments\v0.7\Project.toml`
[no changes]
Updating `C:\Users\psoderlind\.julia\environments\v0.7\Manifest.toml`
[no changes]
ERROR: MethodError: no method matching getindex(::Nothing, ::String)
Stacktrace:
[1] #build_versions#45(::Bool, ::Function, ::Pkg.Types.Context, ::Array{Base.UUID,1}) at C:\cygwi
\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v0.7\Pkg\src\Operat
ons.jl:1016
[2] build_versions at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\
ulia\stdlib\v0.7\Pkg\src\Operations.jl:1005 [inlined]
[3] up(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\bui
dbot\worker\package_win64\build\usr\share\julia\stdlib\v0.7\Pkg\src\Operations.jl:1209
...
It only seems to happen when there are no updates.