Have same issue:
julia> using PackageCompiler
julia> PackageCompiler.compile_incremental(:test123, verbose = true, force = false)
Updating registry at c:\space\jdepot\registries\General
Updating git-repo https://github.com/JuliaRegistries/General.git
Resolving package versions…
Updating C:\space\jdepot\dev\PackageCompiler\packages\test123\Project.toml
[de0858da] + Printf
Updating C:\space\jdepot\dev\PackageCompiler\packages\test123\Manifest.toml
[de0858da] + Printf
[4ec0a83e] + Unicode
Resolving package versions…
Updating C:\space\jdepot\dev\PackageCompiler\packages\test123\Project.toml
[9b87118b] + PackageCompiler v0.6.4
[44cfe95a] + Pkg
Updating C:\space\jdepot\dev\PackageCompiler\packages\test123\Manifest.toml
[9e28174c] + BinDeps v0.8.10
[b99e7846] + BinaryProvider v0.5.7
[e1450e63] + BufferedStreams v1.0.0
[34da2185] + Compat v2.2.0
[0862f596] + HTTPClient v0.2.1
[b27032c2] + LibCURL v0.5.2
[522f3ed2] + LibExpat v0.5.0
[2ec943e9] + Libz v1.0.0
[9b87118b] + PackageCompiler v0.6.4
[30578b45] + URIParser v0.4.0
[c17dfb99] + WinRPM v0.4.2
[2a0f44e3] + Base64
[ade2ca70] + Dates
[8bb1440f] + DelimitedFiles
[8ba89e20] + Distributed
[b77e0a4c] + InteractiveUtils
[76f85450] + LibGit2
[8f399da3] + Libdl
[37e2e46d] + LinearAlgebra
[56ddb016] + Logging
[d6f4376e] + Markdown
[a63ad114] + Mmap
[44cfe95a] + Pkg
[3fa0cd96] + REPL
[9a3f8284] + Random
[ea8e919c] + SHA
[9e88b42a] + Serialization
[1a1011a3] + SharedArrays
[6462fe0b] + Sockets
[2f01184e] + SparseArrays
[10745b16] + Statistics
[8dfed614] + Test
[cf7118a7] + UUIDs
Activating environment at c:\space\jdepot\dev\PackageCompiler\packages\test123\Project.toml
ERROR: LoadError: Package test123 [fb82510b-2530-40ac-8f12-c46bb3d5f6d3] not found in a registry.
Stacktrace:
[1] pkgerror(::String) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\Types.jl:112
[2] check_registered(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\Operations.jl:924
[3] up(::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}, ::Pkg.Types.UpgradeLevel) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\Operations.jl:1043
[4] #up#43(::Pkg.Types.UpgradeLevel, ::Pkg.Types.PackageMode, ::Bool, ::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::typeof(Pkg.API.up), ::Pkg.Types.Context, ::Array{Pkg.Types.PackageSpec,1}) at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\API.jl:167
[5] #up#38 at .\none:0 [inlined]
[6] #up at .\none:0 [inlined]
[7] resolve at C:\cygwin\home\Administrator\buildbot\worker\package_win64\build\usr\share\julia\stdlib\v1.2\Pkg\src\API.jl:172 [inlined] (repeats 2 times)
[8] top-level scope at c:\space\jdepot\dev\PackageCompiler\sysimg\run_julia_code.jl:6
[9] include at .\boot.jl:328 [inlined]
[10] include_relative(::Module, ::String) at .\loading.jl:1094
[11] include(::Module, ::String) at .\Base.jl:31
[12] exec_options(::Base.JLOptions) at .\client.jl:295
[13] _start() at .\client.jl:464
in expression starting at c:\space\jdepot\dev\PackageCompiler\sysimg\run_julia_code.jl:6
ERROR: failed process: Process('C:\space\julia\j120\bin\julia.exe' --compile=all --optimize=0 -g1 '--trace-compile=c:\space\jdepot\dev\PackageCompiler\packages\precompile_tmp.jl' --startup-file=no --history-file=yes --code-coverage=none --inline=yes --math-mode=ieee --handle-signals=yes --warn-overwrite=no --compile=yes --depwarn=yes --cpu-target=native --track-allocation=none --sysimage-native-code=yes '--sysimage=C:\space\julia\j120\lib\julia\sys.dll' -g1 --compiled-modules=yes --optimize=2 'c:\space\jdepot\dev\PackageCompiler\sysimg\run_julia_code.jl'
, ProcessExited(1)) [1]
Stacktrace:
[1] pipeline_error at .\process.jl:813 [inlined]
[2] #run#536(::Bool, ::typeof(run), ::Cmd) at .\process.jl:728
[3] run at .\process.jl:726 [inlined]
[4] #run_julia#1 at c:\space\jdepot\dev\PackageCompiler\src\compiler_flags.jl:225 [inlined]
[5] #run_julia at .\none:0 [inlined]
[6] snoop(::Symbol, ::String, ::String, ::String, ::Bool, ::Array{Any,1}) at c:\space\jdepot\dev\PackageCompiler\src\snooping.jl:34
[7] (::getfield(PackageCompiler, Symbol(“##35#37”)){Array{Any,1},Tuple{Symbol},Dict{Any,Any},String,Dict{String,Array{Dict{String,Any},1}}})(::IOStream) at c:\space\jdepot\dev\PackageCompiler\src\snooping.jl:125
[8] #open#312(::Base.Iterators.Pairs{Union{},Union{},Tuple{},NamedTuple{(),Tuple{}}}, ::typeof(open), ::getfield(PackageCompiler, Symbol(“##35#37”)){Array{Any,1},Tuple{Symbol},Dict{Any,Any},String,Dict{String,Array{Dict{String,Any},1}}}, ::String, ::Vararg{String,N} where N) at .\iostream.jl:375
[9] open at .\iostream.jl:373 [inlined]
[10] #snoop_packages#34 at c:\space\jdepot\dev\PackageCompiler\src\snooping.jl:110 [inlined]
[11] #snoop_packages at .\none:0 [inlined]
[12] #compile_incremental#63 at c:\space\jdepot\dev\PackageCompiler\src\incremental.jl:176 [inlined]
[13] (::getfield(PackageCompiler, Symbol(“#kw##compile_incremental”)))(::NamedTuple{(:verbose, :force),Tuple{Bool,Bool}}, ::typeof(compile_incremental), ::Symbol) at .\none:0
[14] top-level scope at REPL[2]:1