Test error

[bclyons12]

I'm getting the following error attempting to run the tests on both my Mac and Linux, starting with a dev installation of Mousetrap up-to-date on the main branch.

     Testing Running tests...
[ERROR] In Mousetrap.main: MethodError: Cannot `convert` an object of type Nothing to an object of type Mousetrap.detail._Window

Closest candidates are:
  convert(::Type{Mousetrap.detail._Window}, ::Mousetrap.detail._WindowAllocated)
   @ Mousetrap ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:686
  convert(::Type{Mousetrap.detail._Window}, ::Mousetrap.detail._WindowDereferenced)
   @ Mousetrap ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:687
  convert(::Type{Mousetrap.detail._Window}, ::T) where T<:Mousetrap.detail._Window
   @ Mousetrap ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:682
  ...

Stacktrace:
  [1] Window(_internal::Nothing)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:400
  [2] (::var"#176#180")(app::Application)
    @ Main ~/.julia/dev/Mousetrap/test/runtests.jl:2874
  [3] (::TypedFunction)(args::Application)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:91
  [4] (::Mousetrap.var"#14#15"{TypedFunction})(app::Application)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:1542
  [5] (::TypedFunction)(args::Application)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:91
  [6] (::Mousetrap.var"#6#8"{TypedFunction})(x::Tuple{CxxWrap.CxxWrapCore.CxxRef{Mousetrap.detail._Application}})
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:657
  [7] safe_call(scope::String, f::Function, args::Tuple{CxxWrap.CxxWrapCore.CxxRef{Mousetrap.detail._Application}})
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:190
  [8] run!(arg1::Mousetrap.detail._ApplicationAllocated)
    @ Mousetrap.detail ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:624
  [9] run!(app::Application)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:1511
 [10] main(f::Function, application_id::String)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:1552
 [11] top-level scope
    @ ~/.julia/dev/Mousetrap/test/runtests.jl:2785
 [12] include(fname::String)
    @ Base.MainInclude ./client.jl:489
 [13] top-level scope
    @ none:6
 [14] eval
    @ Core ./boot.jl:385 [inlined]
 [15] exec_options(opts::Base.JLOptions)
    @ Base ./client.jl:291
 [16] _start()
    @ Base ./client.jl:552
     Testing Mousetrap tests passed 

Detailed output of environment

[lyonsbc@omega-b]% git status
On branch main
Your branch is up to date with 'origin/main'.
[lyonsbc@omega-b]% julia
               _
   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.10.0 (2023-12-25)
 _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
|__/                   |


julia> versioninfo()
Julia Version 1.10.0
Commit 3120989f39b (2023-12-25 18:01 UTC)
Build Info:
  Official https://julialang.org/ release
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: 40 × Intel(R) Xeon(R) Gold 6230 CPU @ 2.10GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-15.0.7 (ORCJIT, cascadelake)
  Threads: 1 on 40 virtual cores

(test_mt) pkg> activate test_mt2
  Activating new project at `~/test_mt2`

(test_mt2) pkg> st
Status `~/test_mt2/Project.toml` (empty project)

(test_mt2) pkg> dev Mousetrap
   Resolving package versions...
    Updating `~/test_mt2/Project.toml`
  [5deeb4b9] + Mousetrap v0.3.1 `~/.julia/dev/Mousetrap`
    Updating `~/test_mt2/Manifest.toml`
  [a4c015fc] + ANSIColoredPrinters v0.0.1
  [1520ce14] + AbstractTrees v0.4.4
  [c7e460c6] + ArgParse v1.1.5
  [bf4720bc] + AssetRegistry v0.1.0
⌅ [15f4f7f2] + AutoHashEquals v0.2.0
  [12aac903] + BinaryBuilder v0.5.7
  [7f725544] + BinaryBuilderBase v1.29.0
  [d1d4a3ce] + BitFlags v0.1.8
  [944b1d66] + CodecZlib v0.7.4
  [34da2185] + Compat v4.12.0
  [f0e56b4a] + ConcurrentUtilities v2.3.1
  [1f15a43c] + CxxWrap v0.14.2
  [9a962f9c] + DataAPI v1.16.0
  [e2d170a0] + DataValueInterfaces v1.0.0
  [ffbed154] + DocStringExtensions v0.9.3
  [e30172f5] + Documenter v1.2.1
  [460bff9d] + ExceptionUnwrapping v0.1.10
  [e2ba6199] + ExprTools v0.1.10
  [5789e2e9] + FileIO v1.16.2
  [59287772] + Formatting v0.4.2
  [d7ba0133] + Git v1.3.0
  [8f6bce27] + GitForge v0.4.2
  [bc5e4493] + GitHub v5.9.0
  [cd3eb016] + HTTP v1.10.1
  [9fb69e20] + Hiccup v0.2.2
  [6df8b67a] + HistoricalStdlibVersions v1.2.2
  [b5f81e59] + IOCapture v0.2.4
  [842dd82b] + InlineStrings v1.4.0
  [82899510] + IteratorInterfaceExtensions v1.0.0
  [033835bb] + JLD2 v0.4.45
  [692b3bcd] + JLLWrappers v1.5.0
  [682c06a0] + JSON v0.21.4
  [0f8b85d8] + JSON3 v1.14.0
  [b964fa9f] + LaTeXStrings v1.3.1
  [23fbe1c1] + Latexify v0.16.1
  [0e77f7df] + LazilyInitializedFields v1.2.2
  [e6f89c97] + LoggingExtras v1.0.3
  [1914dd2f] + MacroTools v0.5.13
  [d0879d2d] + MarkdownAST v0.1.2
  [739be429] + MbedTLS v1.1.9
  [78c3b35d] + Mocking v0.7.7
  [5deeb4b9] + Mousetrap v0.3.1 `~/.julia/dev/Mousetrap`
  [ffc61752] + Mustache v1.0.19
  [a975b10e] + Mux v1.0.1
⌅ [d8793406] + ObjectFile v0.3.7
  [4d8831e6] + OpenSSL v1.4.1
  [bac558e1] + OrderedCollections v1.6.3
  [6c11c7d4] + OutputCollectors v0.1.1
  [69de0a69] + Parsers v2.8.1
  [fa939f87] + Pidfile v1.3.0
  [fc669557] + PkgLicenses v0.2.0
  [aea7be01] + PrecompileTools v1.2.0
  [21216c6a] + Preferences v1.4.1
  [92933f4c] + ProgressMeter v1.9.0
  [189a3867] + Reexport v1.2.2
  [4418983a] + Registrator v1.9.3
  [2792f1a3] + RegistryInstances v0.1.0
  [d1eb7eb1] + RegistryTools v2.2.3
  [ae029012] + Requires v1.3.0
  [6c6a2e73] + Scratch v1.2.1
  [777ac1f9] + SimpleBufferStream v1.1.0
  [2133526b] + SodiumSeal v0.1.1
  [53d494c1] + StructIO v0.3.0
  [856f2bd8] + StructTypes v1.10.0
  [dc5dba14] + TZJData v1.1.0+2023d
  [3783bdb8] + TableTraits v1.0.1
  [bd369af6] + Tables v1.11.1
  [b718987f] + TextWrap v1.0.1
  [37f0c46e] + TimeToLive v0.3.0
  [f269a46b] + TimeZones v1.13.0
  [3bb67fe8] + TranscodingStreams v0.10.3
  [5c2747f8] + URIs v1.5.1
  [c2297ded] + ZMQ v1.2.2
  [1fd713ca] + Attr_jll v2.5.1+0
  [6e34b625] + Bzip2_jll v1.0.8+1
  [83423d85] + Cairo_jll v1.16.1+1
  [2702e6a9] + EpollShim_jll v0.0.20230411+0
  [2e619515] + Expat_jll v2.5.0+0
  [a3f928ae] + Fontconfig_jll v2.13.93+0
  [d7e528f0] + FreeType2_jll v2.13.1+0
  [559328eb] + FriBidi_jll v1.0.10+0
  [bde7f898] + GLEW_jll v2.2.0+0
  [bd17208b] + GLU_jll v9.0.1+0
  [6ebb71f1] + GTK4_jll v4.12.5+0
  [78b55507] + Gettext_jll v0.21.0+0
  [f8c6e375] + Git_jll v2.43.0+0
  [7746bdde] + Glib_jll v2.76.5+0
  [75302f13] + Graphene_jll v1.10.6+0
  [3b182d85] + Graphite2_jll v1.3.14+0
  [be1be57a] + Gzip_jll v1.13.0+0
  [2e76f6c2] + HarfBuzz_jll v2.8.1+1
  [aacddb02] + JpegTurbo_jll v3.0.1+0
  [88015f11] + LERC_jll v3.0.0+1
  [1d63c593] + LLVMOpenMP_jll v15.0.7+0
  [dd4b983a] + LZO_jll v2.10.1+0
  [42c93a91] + Libepoxy_jll v1.5.10+0
⌅ [e9f186c6] + Libffi_jll v3.2.2+1
  [d4300ac3] + Libgcrypt_jll v1.8.7+0
  [7e76a0d4] + Libglvnd_jll v1.6.0+0
  [7add5ba3] + Libgpg_error_jll v1.42.0+0
  [94ce4f54] + Libiconv_jll v1.17.0+0
  [4b2f31a3] + Libmount_jll v2.35.0+0
  [89763e89] + Libtiff_jll v4.6.0+0
  [38a345b3] + Libuuid_jll v2.36.0+0
  [cc7be9be] + OpenGLMathematics_jll v0.9.9+0
  [458c3c95] + OpenSSL_jll v3.0.13+0
  [36c8627f] + Pango_jll v1.50.14+0
  [30392449] + Pixman_jll v0.42.2+0
  [9b64493d] + Tar_jll v1.35.0+0
  [a2964d1f] + Wayland_jll v1.21.0+1
  [2381bf8a] + Wayland_protocols_jll v1.31.0+0
  [02c8fc9c] + XML2_jll v2.12.2+0
  [aed1982a] + XSLT_jll v1.1.34+0
  [ffd25f8a] + XZ_jll v5.4.5+0
  [4f6342f7] + Xorg_libX11_jll v1.8.6+0
  [0c0b7dd1] + Xorg_libXau_jll v1.0.11+0
  [935fb764] + Xorg_libXcursor_jll v1.2.0+4
  [0aeada51] + Xorg_libXdamage_jll v1.1.5+4
  [a3789734] + Xorg_libXdmcp_jll v1.1.4+0
  [1082639a] + Xorg_libXext_jll v1.3.4+4
  [d091e8ba] + Xorg_libXfixes_jll v5.0.3+4
  [a51aa0fd] + Xorg_libXi_jll v1.7.10+4
  [d1454406] + Xorg_libXinerama_jll v1.1.4+4
  [ec84b674] + Xorg_libXrandr_jll v1.5.2+4
  [ea2f1a96] + Xorg_libXrender_jll v0.9.10+4
  [14d82f49] + Xorg_libpthread_stubs_jll v0.1.1+0
  [c7cfdc94] + Xorg_libxcb_jll v1.15.0+0
  [cc61e674] + Xorg_libxkbfile_jll v1.1.2+0
  [35661453] + Xorg_xkbcomp_jll v1.4.6+0
  [33bec58e] + Xorg_xkeyboard_config_jll v2.39.0+0
  [c5fb5394] + Xorg_xtrans_jll v1.5.0+0
  [8f1865be] + ZeroMQ_jll v4.3.4+0
  [3161d3a3] + Zstd_jll v1.5.5+0
  [da03df04] + gdk_pixbuf_jll v2.42.10+0
  [07c12ed4] + ghr_jll v0.14.0+0
  [bf975903] + iso_codes_jll v4.15.1+0
  [583852a3] + libadwaita_jll v1.3.6+0
⌅ [3eaa8342] + libcxxwrap_julia_jll v0.11.2+0
  [b53b4c65] + libpng_jll v1.6.40+0
  [a9144af2] + libsodium_jll v1.0.20+0
  [0e90efc8] + mousetrap_jll v0.3.0+0
  [1bc43ea1] + pigz_jll v2.8.0+0
  [88f77b66] + unzip_jll v6.0.2+0
  [d8fb68d0] + xkbcommon_jll v1.4.1+1
  [0dad84c5] + ArgTools v1.1.1
  [56f22d72] + Artifacts
  [2a0f44e3] + Base64
  [ade2ca70] + Dates
  [8ba89e20] + Distributed
  [f43a241f] + Downloads v1.6.0
  [7b1f6079] + FileWatching
  [b77e0a4c] + InteractiveUtils
  [4af54fe1] + LazyArtifacts
  [b27032c2] + LibCURL v0.6.4
  [76f85450] + LibGit2
  [8f399da3] + Libdl
  [37e2e46d] + LinearAlgebra
  [56ddb016] + Logging
  [d6f4376e] + Markdown
  [a63ad114] + Mmap
  [ca575930] + NetworkOptions v1.2.0
  [44cfe95a] + Pkg v1.10.0
  [de0858da] + Printf
  [3fa0cd96] + REPL
  [9a3f8284] + Random
  [ea8e919c] + SHA v0.7.0
  [9e88b42a] + Serialization
  [6462fe0b] + Sockets
  [fa267f1f] + TOML v1.0.3
  [a4e569a6] + Tar v1.10.0
  [8dfed614] + Test
  [cf7118a7] + UUIDs
  [4ec0a83e] + Unicode
  [e66e0078] + CompilerSupportLibraries_jll v1.0.5+1
  [deac9b47] + LibCURL_jll v8.4.0+0
  [e37daf67] + LibGit2_jll v1.6.4+0
  [29816b5a] + LibSSH2_jll v1.11.0+1
  [c8ffd9c3] + MbedTLS_jll v2.28.2+1
  [14a3606d] + MozillaCACerts_jll v2023.1.10
  [4536629a] + OpenBLAS_jll v0.3.23+2
  [efcefdf7] + PCRE2_jll v10.42.0+1
  [83775a58] + Zlib_jll v1.2.13+1
  [8e850b90] + libblastrampoline_jll v5.8.0+1
  [8e850ede] + nghttp2_jll v1.52.0+1
  [3f19e933] + p7zip_jll v17.4.0+2
        Info Packages marked with ⌅ have new versions available but compatibility constraints restrict them from upgrading. To see why use `status --outdated -m`

(test_mt2) pkg> precompile

(test_mt2) pkg> test Mousetrap
     Testing Mousetrap
      Status `/tmp/jl_1rAqcz/Project.toml`
  [12aac903] BinaryBuilder v0.5.7
  [1f15a43c] CxxWrap v0.14.2
  [e30172f5] Documenter v1.2.1
  [23fbe1c1] Latexify v0.16.1
  [5deeb4b9] Mousetrap v0.3.1 `~/.julia/dev/Mousetrap`
  [6ebb71f1] GTK4_jll v4.12.5+0
  [7746bdde] Glib_jll v2.76.5+0
  [583852a3] libadwaita_jll v1.3.6+0
⌅ [3eaa8342] libcxxwrap_julia_jll v0.11.2+0
  [0e90efc8] mousetrap_jll v0.3.0+0
  [b77e0a4c] InteractiveUtils
  [44cfe95a] Pkg v1.10.0
  [8dfed614] Test
      Status `/tmp/jl_1rAqcz/Manifest.toml`
  [a4c015fc] ANSIColoredPrinters v0.0.1
  [1520ce14] AbstractTrees v0.4.4
  [c7e460c6] ArgParse v1.1.5
  [bf4720bc] AssetRegistry v0.1.0
⌅ [15f4f7f2] AutoHashEquals v0.2.0
  [12aac903] BinaryBuilder v0.5.7
  [7f725544] BinaryBuilderBase v1.29.0
  [d1d4a3ce] BitFlags v0.1.8
  [944b1d66] CodecZlib v0.7.4
  [34da2185] Compat v4.12.0
  [f0e56b4a] ConcurrentUtilities v2.3.1
  [1f15a43c] CxxWrap v0.14.2
  [9a962f9c] DataAPI v1.16.0
  [e2d170a0] DataValueInterfaces v1.0.0
  [ffbed154] DocStringExtensions v0.9.3
  [e30172f5] Documenter v1.2.1
  [460bff9d] ExceptionUnwrapping v0.1.10
  [e2ba6199] ExprTools v0.1.10
  [5789e2e9] FileIO v1.16.2
  [59287772] Formatting v0.4.2
  [d7ba0133] Git v1.3.0
  [8f6bce27] GitForge v0.4.2
  [bc5e4493] GitHub v5.9.0
  [cd3eb016] HTTP v1.10.1
  [9fb69e20] Hiccup v0.2.2
  [6df8b67a] HistoricalStdlibVersions v1.2.2
  [b5f81e59] IOCapture v0.2.4
  [842dd82b] InlineStrings v1.4.0
  [82899510] IteratorInterfaceExtensions v1.0.0
  [033835bb] JLD2 v0.4.45
  [692b3bcd] JLLWrappers v1.5.0
  [682c06a0] JSON v0.21.4
  [0f8b85d8] JSON3 v1.14.0
  [b964fa9f] LaTeXStrings v1.3.1
  [23fbe1c1] Latexify v0.16.1
  [0e77f7df] LazilyInitializedFields v1.2.2
  [e6f89c97] LoggingExtras v1.0.3
  [1914dd2f] MacroTools v0.5.13
  [d0879d2d] MarkdownAST v0.1.2
  [739be429] MbedTLS v1.1.9
  [78c3b35d] Mocking v0.7.7
  [5deeb4b9] Mousetrap v0.3.1 `~/.julia/dev/Mousetrap`
  [ffc61752] Mustache v1.0.19
  [a975b10e] Mux v1.0.1
⌅ [d8793406] ObjectFile v0.3.7
  [4d8831e6] OpenSSL v1.4.1
  [bac558e1] OrderedCollections v1.6.3
  [6c11c7d4] OutputCollectors v0.1.1
  [69de0a69] Parsers v2.8.1
  [fa939f87] Pidfile v1.3.0
  [fc669557] PkgLicenses v0.2.0
  [aea7be01] PrecompileTools v1.2.0
  [21216c6a] Preferences v1.4.1
  [92933f4c] ProgressMeter v1.9.0
  [189a3867] Reexport v1.2.2
  [4418983a] Registrator v1.9.3
  [2792f1a3] RegistryInstances v0.1.0
  [d1eb7eb1] RegistryTools v2.2.3
  [ae029012] Requires v1.3.0
  [6c6a2e73] Scratch v1.2.1
  [777ac1f9] SimpleBufferStream v1.1.0
  [2133526b] SodiumSeal v0.1.1
  [53d494c1] StructIO v0.3.0
  [856f2bd8] StructTypes v1.10.0
  [dc5dba14] TZJData v1.1.0+2023d
  [3783bdb8] TableTraits v1.0.1
  [bd369af6] Tables v1.11.1
  [b718987f] TextWrap v1.0.1
  [37f0c46e] TimeToLive v0.3.0
  [f269a46b] TimeZones v1.13.0
  [3bb67fe8] TranscodingStreams v0.10.3
  [5c2747f8] URIs v1.5.1
  [c2297ded] ZMQ v1.2.2
  [1fd713ca] Attr_jll v2.5.1+0
  [6e34b625] Bzip2_jll v1.0.8+1
  [83423d85] Cairo_jll v1.16.1+1
  [2702e6a9] EpollShim_jll v0.0.20230411+0
  [2e619515] Expat_jll v2.5.0+0
  [a3f928ae] Fontconfig_jll v2.13.93+0
  [d7e528f0] FreeType2_jll v2.13.1+0
  [559328eb] FriBidi_jll v1.0.10+0
  [bde7f898] GLEW_jll v2.2.0+0
  [bd17208b] GLU_jll v9.0.1+0
  [6ebb71f1] GTK4_jll v4.12.5+0
  [78b55507] Gettext_jll v0.21.0+0
  [f8c6e375] Git_jll v2.43.0+0
  [7746bdde] Glib_jll v2.76.5+0
  [75302f13] Graphene_jll v1.10.6+0
  [3b182d85] Graphite2_jll v1.3.14+0
  [be1be57a] Gzip_jll v1.13.0+0
  [2e76f6c2] HarfBuzz_jll v2.8.1+1
  [aacddb02] JpegTurbo_jll v3.0.1+0
  [88015f11] LERC_jll v3.0.0+1
  [1d63c593] LLVMOpenMP_jll v15.0.7+0
  [dd4b983a] LZO_jll v2.10.1+0
  [42c93a91] Libepoxy_jll v1.5.10+0
⌅ [e9f186c6] Libffi_jll v3.2.2+1
  [d4300ac3] Libgcrypt_jll v1.8.7+0
  [7e76a0d4] Libglvnd_jll v1.6.0+0
  [7add5ba3] Libgpg_error_jll v1.42.0+0
  [94ce4f54] Libiconv_jll v1.17.0+0
  [4b2f31a3] Libmount_jll v2.35.0+0
  [89763e89] Libtiff_jll v4.6.0+0
  [38a345b3] Libuuid_jll v2.36.0+0
  [cc7be9be] OpenGLMathematics_jll v0.9.9+0
  [458c3c95] OpenSSL_jll v3.0.13+0
  [36c8627f] Pango_jll v1.50.14+0
  [30392449] Pixman_jll v0.42.2+0
  [9b64493d] Tar_jll v1.35.0+0
  [a2964d1f] Wayland_jll v1.21.0+1
  [2381bf8a] Wayland_protocols_jll v1.31.0+0
  [02c8fc9c] XML2_jll v2.12.2+0
  [aed1982a] XSLT_jll v1.1.34+0
  [ffd25f8a] XZ_jll v5.4.5+0
  [4f6342f7] Xorg_libX11_jll v1.8.6+0
  [0c0b7dd1] Xorg_libXau_jll v1.0.11+0
  [935fb764] Xorg_libXcursor_jll v1.2.0+4
  [0aeada51] Xorg_libXdamage_jll v1.1.5+4
  [a3789734] Xorg_libXdmcp_jll v1.1.4+0
  [1082639a] Xorg_libXext_jll v1.3.4+4
  [d091e8ba] Xorg_libXfixes_jll v5.0.3+4
  [a51aa0fd] Xorg_libXi_jll v1.7.10+4
  [d1454406] Xorg_libXinerama_jll v1.1.4+4
  [ec84b674] Xorg_libXrandr_jll v1.5.2+4
  [ea2f1a96] Xorg_libXrender_jll v0.9.10+4
  [14d82f49] Xorg_libpthread_stubs_jll v0.1.1+0
  [c7cfdc94] Xorg_libxcb_jll v1.15.0+0
  [cc61e674] Xorg_libxkbfile_jll v1.1.2+0
  [35661453] Xorg_xkbcomp_jll v1.4.6+0
  [33bec58e] Xorg_xkeyboard_config_jll v2.39.0+0
  [c5fb5394] Xorg_xtrans_jll v1.5.0+0
  [8f1865be] ZeroMQ_jll v4.3.4+0
  [3161d3a3] Zstd_jll v1.5.5+0
  [da03df04] gdk_pixbuf_jll v2.42.10+0
  [07c12ed4] ghr_jll v0.14.0+0
  [bf975903] iso_codes_jll v4.15.1+0
  [583852a3] libadwaita_jll v1.3.6+0
⌅ [3eaa8342] libcxxwrap_julia_jll v0.11.2+0
  [b53b4c65] libpng_jll v1.6.40+0
  [a9144af2] libsodium_jll v1.0.20+0
  [0e90efc8] mousetrap_jll v0.3.0+0
  [1bc43ea1] pigz_jll v2.8.0+0
  [88f77b66] unzip_jll v6.0.2+0
  [d8fb68d0] xkbcommon_jll v1.4.1+1
  [0dad84c5] ArgTools v1.1.1
  [56f22d72] Artifacts
  [2a0f44e3] Base64
  [ade2ca70] Dates
  [8ba89e20] Distributed
  [f43a241f] Downloads v1.6.0
  [7b1f6079] FileWatching
  [b77e0a4c] InteractiveUtils
  [4af54fe1] LazyArtifacts
  [b27032c2] LibCURL v0.6.4
  [76f85450] LibGit2
  [8f399da3] Libdl
  [37e2e46d] LinearAlgebra
  [56ddb016] Logging
  [d6f4376e] Markdown
  [a63ad114] Mmap
  [ca575930] NetworkOptions v1.2.0
  [44cfe95a] Pkg v1.10.0
  [de0858da] Printf
  [3fa0cd96] REPL
  [9a3f8284] Random
  [ea8e919c] SHA v0.7.0
  [9e88b42a] Serialization
  [6462fe0b] Sockets
  [fa267f1f] TOML v1.0.3
  [a4e569a6] Tar v1.10.0
  [8dfed614] Test
  [cf7118a7] UUIDs
  [4ec0a83e] Unicode
  [e66e0078] CompilerSupportLibraries_jll v1.0.5+1
  [deac9b47] LibCURL_jll v8.4.0+0
  [e37daf67] LibGit2_jll v1.6.4+0
  [29816b5a] LibSSH2_jll v1.11.0+1
  [c8ffd9c3] MbedTLS_jll v2.28.2+1
  [14a3606d] MozillaCACerts_jll v2023.1.10
  [4536629a] OpenBLAS_jll v0.3.23+2
  [efcefdf7] PCRE2_jll v10.42.0+1
  [83775a58] Zlib_jll v1.2.13+1
  [8e850b90] libblastrampoline_jll v5.8.0+1
  [8e850ede] nghttp2_jll v1.52.0+1
  [3f19e933] p7zip_jll v17.4.0+2
        Info Packages marked with ⌅ have new versions available but compatibility constraints restrict them from upgrading.
     Testing Running tests...
[ERROR] In Mousetrap.main: MethodError: Cannot `convert` an object of type Nothing to an object of type Mousetrap.detail._Window

Closest candidates are:
  convert(::Type{Mousetrap.detail._Window}, ::Mousetrap.detail._WindowAllocated)
   @ Mousetrap ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:686
  convert(::Type{Mousetrap.detail._Window}, ::Mousetrap.detail._WindowDereferenced)
   @ Mousetrap ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:687
  convert(::Type{Mousetrap.detail._Window}, ::T) where T<:Mousetrap.detail._Window
   @ Mousetrap ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:682
  ...

Stacktrace:
  [1] Window(_internal::Nothing)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:400
  [2] (::var"#176#180")(app::Application)
    @ Main ~/.julia/dev/Mousetrap/test/runtests.jl:2874
  [3] (::TypedFunction)(args::Application)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:91
  [4] (::Mousetrap.var"#14#15"{TypedFunction})(app::Application)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:1542
  [5] (::TypedFunction)(args::Application)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:91
  [6] (::Mousetrap.var"#6#8"{TypedFunction})(x::Tuple{CxxWrap.CxxWrapCore.CxxRef{Mousetrap.detail._Application}})
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:657
  [7] safe_call(scope::String, f::Function, args::Tuple{CxxWrap.CxxWrapCore.CxxRef{Mousetrap.detail._Application}})
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:190
  [8] run!(arg1::Mousetrap.detail._ApplicationAllocated)
    @ Mousetrap.detail ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:624
  [9] run!(app::Application)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:1511
 [10] main(f::Function, application_id::String)
    @ Mousetrap ~/.julia/dev/Mousetrap/src/Mousetrap.jl:1552
 [11] top-level scope
    @ ~/.julia/dev/Mousetrap/test/runtests.jl:2785
 [12] include(fname::String)
    @ Base.MainInclude ./client.jl:489
 [13] top-level scope
    @ none:6
 [14] eval
    @ Core ./boot.jl:385 [inlined]
 [15] exec_options(opts::Base.JLOptions)
    @ Base ./client.jl:291
 [16] _start()
    @ Base ./client.jl:552
     Testing Mousetrap tests passed 

[trg818]

It still fails during a new installation on a Mac running Ventura 13.6.9 under Julia 1.10.4.

[togo65]

I get similar:
julia> versioninfo() Julia Version 1.11.1 Commit 8f5b7ca12ad (2024-10-16 10:53 UTC) Build Info: Official https://julialang.org/ release Platform Info: OS: Linux (x86_64-linux-gnu) CPU: 12 × Intel(R) Core(TM) i7 CPU 980 @ 3.33GHz WORD_SIZE: 64 LLVM: libLLVM-16.0.6 (ORCJIT, westmere) Threads: 1 default, 0 interactive, 1 GC (on 12 virtual cores)
After following advice to update .bashrc, rebooted, did two Pkg.update(...) (as instructed), I still get this:

`Testing Running tests...

(process:3306): Gtk-WARNING **: 18:32:10.766: Unknown key gtk-modules in /home/roger/.config/gtk-4.0/settings.ini

(process:3306): Adwaita-WARNING **: 18:32:10.791: Using GtkSettings:gtk-application-prefer-dark-theme with libadwaita is unsupported. Please use AdwStyleManager:color-scheme instead.
[ERROR] In Mousetrap.main: MethodError: Cannot convert an object of type Nothing to an object of type Mousetrap.detail._Window
The function convert exists, but no method is defined for this combination of argument types.

Closest candidates are:
convert(::Type{Mousetrap.detail._Window}, ::Mousetrap.detail._WindowAllocated)
@ Mousetrap ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:686
convert(::Type{Mousetrap.detail._Window}, ::Mousetrap.detail._WindowDereferenced)
@ Mousetrap ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:687
convert(::Type{Mousetrap.detail._Window}, ::T) where T<:Mousetrap.detail._Window
@ Mousetrap ~/.julia/packages/CxxWrap/5IZvn/src/CxxWrap.jl:682
...`