Instantiate a Manifest.toml without Project.toml

I have a Manifest.toml file without a Project.toml file. When I activate the environment and instantiate, instantiate runs but does not load the packages (and red arrows remain). Is this a bug or do I not get the process?

(working) pkg> activate .

(conv) pkg> st
    Status `~/Dropbox/Julia7/MLJ/MLJ/sandbox/conv/Project.toml`
  (empty environment)

(conv) pkg> st -m
    Status `~/Dropbox/Julia7/MLJ/MLJ/sandbox/conv/Manifest.toml`
→ [1520ce14] AbstractTrees v0.2.1
→ [79e6a3ab] Adapt v0.4.2
→ [fbb218c0] BSON v0.2.3
  [9e28174c] BinDeps v0.8.10
  [b99e7846] BinaryProvider v0.5.4
→ [00ebfdb7] CSTParser v0.5.2
→ [944b1d66] CodecZlib v0.5.2
→ [3da002f7] ColorTypes v0.7.5
→ [5ae59095] Colors v0.9.5
→ [bbf7d656] CommonSubexpressions v0.2.0
  [34da2185] Compat v2.1.0
→ [a8cc5b0e] Crayons v4.0.0
  [864edb3b] DataStructures v0.15.0
→ [163ba53b] DiffResults v0.0.4
→ [b552c78f] DiffRules v0.0.10
→ [53c48c17] FixedPointNumbers v0.6.1
→ [587475ba] Flux v0.8.3
→ [f6369f11] ForwardDiff v0.10.3
→ [e5e0dc1b] Juno v0.7.0
→ [1914dd2f] MacroTools v0.5.0
→ [e89f7d12] Media v0.5.0
  [e1d29d7a] Missings v0.4.1
→ [872c559c] NNlib v0.6.0
→ [77ba4419] NaNMath v0.3.2
  [bac558e1] OrderedCollections v1.1.0
  [189a3867] Reexport v0.2.0
  [ae029012] Requires v0.5.2
  [a2af1166] SortingAlgorithms v0.3.1
  [276daf66] SpecialFunctions v0.7.2
→ [90137ffa] StaticArrays v0.10.3
  [2913bbd2] StatsBase v0.30.0
→ [a759f4b9] TimerOutputs v0.5.0
→ [0796e94c] Tokenize v0.5.3
→ [9f7883ad] Tracker v0.2.2
→ [3bb67fe8] TranscodingStreams v0.9.4
  [30578b45] URIParser v0.4.0
→ [a5390f91] ZipFile v0.8.1
  [2a0f44e3] Base64 
  [ade2ca70] Dates 
  [8bb1440f] DelimitedFiles 
  [8ba89e20] Distributed 
  [b77e0a4c] InteractiveUtils 
  [76f85450] LibGit2 
  [8f399da3] Libdl 
  [37e2e46d] LinearAlgebra 
  [56ddb016] Logging 
  [d6f4376e] Markdown 
  [a63ad114] Mmap 
  [44cfe95a] Pkg 
  [de0858da] Printf 
  [9abbd945] Profile 
  [3fa0cd96] REPL 
  [9a3f8284] Random 
  [ea8e919c] SHA 
  [9e88b42a] Serialization 
  [1a1011a3] SharedArrays 
  [6462fe0b] Sockets 
  [2f01184e] SparseArrays 
  [10745b16] Statistics 
  [8dfed614] Test 
  [cf7118a7] UUIDs 
  [4ec0a83e] Unicode 
┌ Warning: Some packages (indicated with a red arrow) are not downloaded, use `instantiate` to instantiate the current environment
└ @ Pkg.Display /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.1/Pkg/src/Display.jl:220

(conv) pkg> instantiate
  Updating registry at `~/.julia/registries/General`
  Updating git-repo `https://github.com/JuliaRegistries/General.git`

(conv) pkg> st -m
    Status `~/Dropbox/Julia7/MLJ/MLJ/sandbox/conv/Manifest.toml`
→ [1520ce14] AbstractTrees v0.2.1
→ [79e6a3ab] Adapt v0.4.2
→ [fbb218c0] BSON v0.2.3
  [9e28174c] BinDeps v0.8.10
  [b99e7846] BinaryProvider v0.5.4
→ [00ebfdb7] CSTParser v0.5.2
→ [944b1d66] CodecZlib v0.5.2
→ [3da002f7] ColorTypes v0.7.5
→ [5ae59095] Colors v0.9.5
→ [bbf7d656] CommonSubexpressions v0.2.0
  [34da2185] Compat v2.1.0
→ [a8cc5b0e] Crayons v4.0.0
  [864edb3b] DataStructures v0.15.0
→ [163ba53b] DiffResults v0.0.4
→ [b552c78f] DiffRules v0.0.10
→ [53c48c17] FixedPointNumbers v0.6.1
→ [587475ba] Flux v0.8.3
→ [f6369f11] ForwardDiff v0.10.3
→ [e5e0dc1b] Juno v0.7.0
→ [1914dd2f] MacroTools v0.5.0
→ [e89f7d12] Media v0.5.0
  [e1d29d7a] Missings v0.4.1
→ [872c559c] NNlib v0.6.0
→ [77ba4419] NaNMath v0.3.2
  [bac558e1] OrderedCollections v1.1.0
  [189a3867] Reexport v0.2.0
  [ae029012] Requires v0.5.2
  [a2af1166] SortingAlgorithms v0.3.1
  [276daf66] SpecialFunctions v0.7.2
→ [90137ffa] StaticArrays v0.10.3
  [2913bbd2] StatsBase v0.30.0
→ [a759f4b9] TimerOutputs v0.5.0
→ [0796e94c] Tokenize v0.5.3
→ [9f7883ad] Tracker v0.2.2
→ [3bb67fe8] TranscodingStreams v0.9.4
  [30578b45] URIParser v0.4.0
→ [a5390f91] ZipFile v0.8.1
  [2a0f44e3] Base64 
  [ade2ca70] Dates 
  [8bb1440f] DelimitedFiles 
  [8ba89e20] Distributed 
  [b77e0a4c] InteractiveUtils 
  [76f85450] LibGit2 
  [8f399da3] Libdl 
  [37e2e46d] LinearAlgebra 
  [56ddb016] Logging 
  [d6f4376e] Markdown 
  [a63ad114] Mmap 
  [44cfe95a] Pkg 
  [de0858da] Printf 
  [9abbd945] Profile 
  [3fa0cd96] REPL 
  [9a3f8284] Random 
  [ea8e919c] SHA 
  [9e88b42a] Serialization 
  [1a1011a3] SharedArrays 
  [6462fe0b] Sockets 
  [2f01184e] SparseArrays 
  [10745b16] Statistics 
  [8dfed614] Test 
  [cf7118a7] UUIDs 
  [4ec0a83e] Unicode 
┌ Warning: Some packages (indicated with a red arrow) are not downloaded, use `instantiate` to instantiate the current environment
└ @ Pkg.Display /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.1/Pkg/src/Display.jl:220
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