Cassette error in PkgEval on 1.2 backport branch

[KristofferC]

Error During Test at /root/.julia/packages/Cassette/xggAf/test/misctaggingtests.jl:264
  Test threw exception
  Expression: overdub(ctx, (_y->begin
                kwargtest(3; y=_y)
            end), tag(2, ctx)) === 5
  TypeError: in new, expected Tuple, got Tagged{Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},Tuple{Int64},Cassette.NoMetaData,Tuple{Cassette.Immutable{Cassette.Meta{Cassette.NoMetaData,Cassette.NoMetaMeta}}},Cassette.Context{nametype(KwargCtx),Nothing,Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},getfield(Cassette, Symbol("##PassType#373")),IdDict{Module,Dict{Symbol,Cassette.BindingMeta}},Nothing}}
  Stacktrace:
   [1] overdub(::Cassette.Context{nametype(KwargCtx),Nothing,Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},getfield(Cassette, Symbol("##PassType#373")),IdDict{Module,Dict{Symbol,Cassette.BindingMeta}},Nothing}, ::Type{NamedTuple{(:y,),Tuple{Int64}}}, ::Tagged{Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},Tuple{Int64},Cassette.NoMetaData,Tuple{Cassette.Immutable{Cassette.Meta{Cassette.NoMetaData,Cassette.NoMetaMeta}}},Cassette.Context{nametype(KwargCtx),Nothing,Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},getfield(Cassette, Symbol("##PassType#373")),IdDict{Module,Dict{Symbol,Cassette.BindingMeta}},Nothing}}) at ./boot.jl:553
   [2] overdub(::Cassette.Context{nametype(KwargCtx),Nothing,Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},getfield(Cassette, Symbol("##PassType#373")),IdDict{Module,Dict{Symbol,Cassette.BindingMeta}},Nothing}, ::Type{NamedTuple{(:y,),T} where T<:Tuple}, ::Tagged{Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},Tuple{Int64},Cassette.NoMetaData,Tuple{Cassette.Immutable{Cassette.Meta{Cassette.NoMetaData,Cassette.NoMetaMeta}}},Cassette.Context{nametype(KwargCtx),Nothing,Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},getfield(Cassette, Symbol("##PassType#373")),IdDict{Module,Dict{Symbol,Cassette.BindingMeta}},Nothing}}) at ./boot.jl:549
   [3] #145 at ./none:0 [inlined]
   [4] overdub(::Cassette.Context{nametype(KwargCtx),Nothing,Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},getfield(Cassette, Symbol("##PassType#373")),IdDict{Module,Dict{Symbol,Cassette.BindingMeta}},Nothing}, ::getfield(Main, Symbol("##145#146")), ::Tagged{Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},Int64,Cassette.NoMetaData,Cassette.NoMetaMeta,Cassette.Context{nametype(KwargCtx),Nothing,Cassette.Tag{nametype(KwargCtx),0xfddc2783aa6f0228,Nothing},getfield(Cassette, Symbol("##PassType#373")),IdDict{Module,Dict{Symbol,Cassette.BindingMeta}},Nothing}}) at /root/.julia/packages/Cassette/xggAf/src/overdub.jl:0
   [5] top-level scope at /root/.julia/packages/Cassette/xggAf/test/misctaggingtests.jl:264
   [6] include at ./boot.jl:328 [inlined]
   [7] include_relative(::Module, ::String) at ./loading.jl:1094
   [8] include(::Module, ::String) at ./Base.jl:31
   [9] include(::String) at ./client.jl:431
   [10] top-level scope at /root/.julia/packages/Cassette/xggAf/test/runtests.jl:14
   [11] top-level scope at /buildworker/worker/package_linux64/build/usr/share/julia/stdlib/v1.2/Test/src/Test.jl:1113
   [12] top-level scope at /root/.julia/packages/Cassette/xggAf/test/runtests.jl:14
   [13] top-level scope at util.jl:156