Error displaying L factor of Tridiagonal matrix

[ranjanan]

julia> a = sprand(10,10,0.1);

julia> a = a  * a';

julia> a = a  * a' + I;

julia> lu(a)
UMFPACK LU Factorization of a (10, 10) sparse matrix
Ptr{Nothing} @0x00007ffc56963190

julia> lu(Tridiagonal(a))
LU{Float64,Tridiagonal{Float64,SparseVector{Float64,Int64}}}
L factor:
Error showing value of type LU{Float64,Tridiagonal{Float64,SparseVector{Float64,Int64}}}:
ERROR: MethodError: no method matching Bidiagonal(::Array{Float64,1}, ::SparseVector{Float64,Int64}, ::Symbol)
Closest candidates are:
  Bidiagonal(::V<:AbstractArray{T,1}, ::V<:AbstractArray{T,1}, ::Symbol) where {T, V<:AbstractArray{T,1}} at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/LinearAlgebra/src/bidiag.jl:65
  Bidiagonal(::V<:AbstractArray{T,1}, ::V<:AbstractArray{T,1}, ::AbstractChar) where {T, V<:AbstractArray{T,1}} at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/LinearAlgebra/src/bidiag.jl:68
Stacktrace:
 [1] getproperty(::LU{Float64,Tridiagonal{Float64,SparseVector{Float64,Int64}}}, ::Symbol) at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/LinearAlgebra/src/lu.jl:499
 [2] show(::IOContext{REPL.Terminals.TTYTerminal}, ::MIME{Symbol("text/plain")}, ::LU{Float64,Tridiagonal{Float64,SparseVector{Float64,Int64}}}) at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/LinearAlgebra/src/lu.jl:310
 [3] display(::REPL.REPLDisplay, ::MIME{Symbol("text/plain")}, ::Any) at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/REPL/src/REPL.jl:131
 [4] display(::REPL.REPLDisplay, ::Any) at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/REPL/src/REPL.jl:135
 [5] display(::Any) at ./multimedia.jl:287
 [6] #invokelatest#1 at ./essentials.jl:697 [inlined]
 [7] invokelatest at ./essentials.jl:696 [inlined]
 [8] print_response(::IO, ::Any, ::Any, ::Bool, ::Bool, ::Any) at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/REPL/src/REPL.jl:154
 [9] print_response(::REPL.AbstractREPL, ::Any, ::Any, ::Bool, ::Bool) at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/REPL/src/REPL.jl:139
 [10] (::getfield(REPL, Symbol("#do_respond#40")){Bool,getfield(REPL, Symbol("##50#59")){REPL.LineEditREPL,REPL.REPLHistoryProvider},REPL.LineEditREPL,REPL.LineEdit.Prompt})(::Any, ::Any, ::Any) at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/REPL/src/REPL.jl:708
 [11] #invokelatest#1 at ./essentials.jl:697 [inlined]
 [12] invokelatest at ./essentials.jl:696 [inlined]
 [13] run_interface(::REPL.Terminals.TextTerminal, ::REPL.LineEdit.ModalInterface, ::REPL.LineEdit.MIState) at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/REPL/src/LineEdit.jl:2261
 [14] run_frontend(::REPL.LineEditREPL, ::REPL.REPLBackendRef) at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/REPL/src/REPL.jl:1029
 [15] run_repl(::REPL.AbstractREPL, ::Any) at /Users/osx/buildbot/slave/package_osx64/build/usr/share/julia/stdlib/v1.0/REPL/src/REPL.jl:191
 [16] (::getfield(Base, Symbol("##719#721")){Bool,Bool,Bool,Bool})(::Module) at ./logging.jl:311
 [17] #invokelatest#1 at ./essentials.jl:697 [inlined]
 [18] invokelatest at ./essentials.jl:696 [inlined]
 [19] macro expansion at ./logging.jl:308 [inlined]
 [20] run_main_repl(::Bool, ::Bool, ::Bool, ::Bool, ::Bool) at ./client.jl:330
 [21] exec_options(::Base.JLOptions) at ./client.jl:242
 [22] _start() at ./client.jl:421

julia> versioninfo()
Julia Version 1.0.1
Commit 0d713926f8 (2018-09-29 19:05 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin14.5.0)
  CPU: Intel(R) Core(TM) i5-5257U CPU @ 2.70GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-6.0.0 (ORCJIT, broadwell)

On a separate note, /Users/osx/buildbot/slave/package_osx64/ seems wrong too.