Pkg.update() failes

Hello,
today I have the following problem:

julia> Pkg.update()
INFO: Updating METADATA...
INFO: Updating ZLog master...
INFO: Updating Lint master...
INFO: Computing changes...
ERROR: unsatisfiable package requirements detected: no feasible version could be found for package: ColorTypes
  (you may try increasing the value of the
   JULIA_PKGRESOLVE_ACCURACY environment variable)
 in resolve(::Dict{String,Base.Pkg.Types.VersionSet}, ::Dict{String,Dict{VersionNumber,Base.Pkg.Types.Available}}) at ./pkg/resolve.jl:37
 in resolve(::Dict{String,Base.Pkg.Types.VersionSet}, ::Dict{String,Dict{VersionNumber,Base.Pkg.Types.Available}}, ::Dict{String,Tuple{VersionNumber,Bool}}, ::Dict{String,Base.Pkg.Types.Fixed}, ::Dict{String,VersionNumber}, ::Set{String}) at ./pkg/entry.jl:495
 in update(::String, ::Set{String}) at ./pkg/entry.jl:458
 in (::Base.Pkg.Dir.##2#3{Array{Any,1},Base.Pkg.Entry.#update,Tuple{String,Set{String}}})() at ./pkg/dir.jl:31
 in cd(::Base.Pkg.Dir.##2#3{Array{Any,1},Base.Pkg.Entry.#update,Tuple{String,Set{String}}}, ::String) at ./file.jl:59
 in #cd#1(::Array{Any,1}, ::Function, ::Function, ::String, ::Vararg{Any,N}) at ./pkg/dir.jl:31
 in update() at ./pkg/pkg.jl:210

julia> 

Pkg.status() shows the following:

julia> Pkg.status()
22 required packages:
 - Atom                          0.5.9
 - BenchmarkTools                0.0.7
 - ConfParser                    0.0.8
 - DataStructures                0.5.3
 - DualNumbers                   0.3.0
 - ForwardDiff                   0.3.4
 - GLVisualize                   0.2.2
 - GR                            0.19.0
 - Gtk                           0.12.0
 - HDF5                          0.7.3
 - Ipopt                         0.2.6
 - JuMP                          0.16.1
 - LaTeXStrings                  0.2.0
 - Lint                          0.2.5+             master
 - ODE                           0.3.0
 - PlotlyJS                      0.5.2
 - Plots                         0.10.3
 - PyCall                        1.10.0
 - PyPlot                        2.3.1
 - QML                           0.3.1
 - StaticArrays                  0.3.0
 - Sundials                      0.7.0
90 additional packages:
 - ASTInterpreter                0.0.4
 - AbstractTrees                 0.0.4
 - ArgParse                      0.4.0
 - BaseTestNext                  0.2.2
 - BinDeps                       0.4.7
 - Blink                         0.5.1
 - Blosc                         0.2.0
 - COFF                          0.0.2
 - CRC                           1.2.0
 - Cairo                         0.2.35
 - Calculus                      0.2.1
 - CodeTools                     0.4.3
 - Codecs                        0.3.0
 - ColorTypes                    0.2.12
 - ColorVectorSpace              0.1.12
 - Colors                        0.6.9
 - Compat                        0.20.0
 - Conda                         0.5.1
 - CxxWrap                       0.2.3
 - DWARF                         0.1.0
 - DiffBase                      0.0.4
 - DiffEqBase                    0.11.0
 - DocStringExtensions           0.3.1
 - ELF                           0.1.0
 - FileIO                        0.3.0
 - FixedPointNumbers             0.2.1
 - FixedSizeArrays               0.2.5
 - FreeType                      1.2.0
 - GLAbstraction                 0.3.1
 - GLFW                          1.2.2
 - GLWindow                      0.3.2
 - Gallium                       0.0.4
 - GeometryTypes                 0.2.2
 - Graphics                      0.1.4
 - Hiccup                        0.1.1
 - HttpCommon                    0.2.6
 - HttpParser                    0.2.0
 - HttpServer                    0.1.7
 - Images                        0.5.14
 - Iterators                     0.3.0
 - JLD                           0.6.9
 - JSON                          0.8.3
 - JuliaParser                   0.7.4
 - Juno                          0.2.7
 - LNR                           0.0.2
 - Lazy                          0.11.5
 - LegacyStrings                 0.2.0
 - MachO                         0.0.4
 - MacroTools                    0.3.6
 - MathProgBase                  0.6.1
 - MbedTLS                       0.4.3
 - Measures                      0.0.3
 - Media                         0.2.5
 - MeshIO                        0.0.6
 - ModernGL                      0.1.1
 - Mustache                      0.1.3
 - Mux                           0.2.3
 - NaNMath                       0.2.2
 - ObjFileBase                   0.0.4
 - OffsetArrays                  0.2.14
 - Packing                       0.0.4
 - Parameters                    0.6.0
 - PlotThemes                    0.1.1
 - PlotUtils                     0.3.0
 - Polynomials                   0.1.3
 - Quaternions                   0.1.1
 - Ranges                        0.0.1
 - Reactive                      0.3.7
 - RecipesBase                   0.1.0
 - RecursiveArrayTools           0.2.0
 - Reexport                      0.0.3
 - ReverseDiffSparse             0.7.1
 - SHA                           0.3.2
 - SIUnits                       0.1.0
 - Showoff                       0.0.7
 - SignedDistanceFields          0.1.0
 - SimpleTraits                  0.3.0
 - SpecialFunctions              0.1.1
 - StatsBase                     0.13.1
 - StructIO                      0.0.2
 - TerminalUI                    0.0.2
 - TexExtensions                 0.0.3
 - TextWrap                      0.1.6
 - TiledIteration                0.0.2
 - URIParser                     0.1.8
 - UnicodeFun                    0.0.2
 - VT100                         0.0.2
 - WebSockets                    0.2.1
 - ZLog                          0.0.0-             master (unregistered)
 - Zlib                          0.1.12
julia> 

Any idea?

See if freeing Lint.jl does the trick.

See also here Pkg broken: "No feasible version" error and here More Pkg trouble: "unsatisfiable package requirements detected" - #10 by ChrisRackauckas. I found that checking out master of Images did the trick. The current version is 0.8.0 so there is definitely something fishy about your version for that. Good luck!

Freeing Lint.jl did the trick, but caused the linter plugin of atom to fail.

After update checkout it again until next Lint.jl tag is released in Metadata.