Errors when pressing Ctrl+C to stop Pluto

[yurivish]

I noticed that if you open Pluto, wait until it opens its page in the browser and print the Press Ctrl+C in this terminal to stop Pluto message, then press Ctrl+C, a variety of internal errors can occur. In some cases I had to press Ctrl+C twice to stop Pluto.

These might be Pluto bugs or they might be Julia bugs, not sure. In all of the cases I only pressed Ctrl+C after the instructions appeared to do so.

yurivish@Compy ~ % julia --eval "using Pluto; Pluto.run()"

Opening http://localhost:1235/?secret=BIQXRb8h in your default browser... ~ have fun!

Press Ctrl+C in this terminal to stop Pluto

^C^Cfatal: error thrown and no exception handler available.
InterruptException()
jl_mutex_unlock at /Users/julia/buildbot/worker/package_macos64/build/src/./locks.h:144 [inlined]
jl_task_get_next at /Users/julia/buildbot/worker/package_macos64/build/src/partr.c:476
poptask at ./task.jl:704
wait at ./task.jl:712 [inlined]
task_done_hook at ./task.jl:442
jl_apply at /Users/julia/buildbot/worker/package_macos64/build/src/./julia.h:1690 [inlined]
jl_finish_task at /Users/julia/buildbot/worker/package_macos64/build/src/task.c:196
start_task at /Users/julia/buildbot/worker/package_macos64/build/src/task.c:715

yurivish@Compy ~ % julia --eval "using Pluto; Pluto.run()"

Opening http://localhost:1235/?secret=D2o9hd74 in your default browser... ~ have fun!

Press Ctrl+C in this terminal to stop Pluto

^C^C┌ Warning: Response function to message of type completepath failed
└ @ Pluto ~/.julia/packages/Pluto/luIaC/src/webserver/WebServer.jl:359


Closing Pluto... Restart Julia for a fresh session.

Have a nice day! 🎈

yurivish@Compy ~ % julia --eval "using Pluto; Pluto.run()"

Opening http://localhost:1235/?secret=Mkr9O4nK in your default browser... ~ have fun!

Press Ctrl+C in this terminal to stop Pluto

^C^Cfatal: error thrown and no exception handler available.
InterruptException()
jl_mutex_unlock at /Users/julia/buildbot/worker/package_macos64/build/src/./locks.h:144 [inlined]
jl_task_get_next at /Users/julia/buildbot/worker/package_macos64/build/src/partr.c:476
poptask at ./task.jl:704
wait at ./task.jl:712 [inlined]
task_done_hook at ./task.jl:442
jl_apply at /Users/julia/buildbot/worker/package_macos64/build/src/./julia.h:1690 [inlined]
jl_finish_task at /Users/julia/buildbot/worker/package_macos64/build/src/task.c:196
start_task at /Users/julia/buildbot/worker/package_macos64/build/src/task.c:715
yurivish@Compy ~ %
yurivish@Compy ~ % julia --eval "using Pluto; Pluto.run()"

Opening http://localhost:1235/?secret=iSO9pwAI in your default browser... ~ have fun!

Press Ctrl+C in this terminal to stop Pluto

^C┌ Warning: Failed to write to WebSocket of 15mi8yp
│   exception =
│    InterruptException:
│    Stacktrace:
│     [1] pack_format(::Base.GenericIOBuffer{Array{UInt8,1}}, ::MsgPack.MapFixFormat, ::Dict{Symbol,Any}) at /Users/yurivish/.julia/packages/MsgPack/pN9xd/src/pack.jl:283
│     [2] pack_type at /Users/yurivish/.julia/packages/MsgPack/pN9xd/src/pack.jl:273 [inlined]
│     [3] pack(::Base.GenericIOBuffer{Array{UInt8,1}}, ::Dict{Symbol,Any}) at /Users/yurivish/.julia/packages/MsgPack/pN9xd/src/pack.jl:25
│     [4] pack_format(::Base.GenericIOBuffer{Array{UInt8,1}}, ::MsgPack.MapFixFormat, ::Dict{Symbol,Any}) at /Users/yurivish/.julia/packages/MsgPack/pN9xd/src/pack.jl:283
│     [5] pack_type at /Users/yurivish/.julia/packages/MsgPack/pN9xd/src/pack.jl:273 [inlined]
│     [6] pack(::Base.GenericIOBuffer{Array{UInt8,1}}, ::Dict{Symbol,Any}) at /Users/yurivish/.julia/packages/MsgPack/pN9xd/src/pack.jl:25
│     [7] pack(::Base.GenericIOBuffer{Array{UInt8,1}}, ::Vararg{Any,N} where N) at /Users/yurivish/.julia/packages/Pluto/luIaC/src/webserver/MsgPack.jl:73
│     [8] serialize_message_to_stream(::Base.GenericIOBuffer{Array{UInt8,1}}, ::Pluto.UpdateMessage) at /Users/yurivish/.julia/packages/Pluto/luIaC/src/webserver/PutUpdates.jl:15
│     [9] sprint(::Function, ::Pluto.UpdateMessage; context::Nothing, sizehint::Int64) at ./strings/io.jl:105
│     [10] sprint at ./strings/io.jl:101 [inlined]
│     [11] serialize_message at /Users/yurivish/.julia/packages/Pluto/luIaC/src/webserver/PutUpdates.jl:19 [inlined]
│     [12] flushclient(::Pluto.ClientSession) at /Users/yurivish/.julia/packages/Pluto/luIaC/src/webserver/PutUpdates.jl:73
│     [13] putclientupdates!(::Pluto.ClientSession, ::Pluto.UpdateMessage) at /Users/yurivish/.julia/packages/Pluto/luIaC/src/webserver/PutUpdates.jl:50
│     [14] putclientupdates! at /Users/yurivish/.julia/packages/Pluto/luIaC/src/webserver/PutUpdates.jl:56 [inlined]
│     [15] (::Pluto.var"#124#126")(::Pluto.ServerSession, ::Dict{Any,Any}, ::Nothing; initiator::Pluto.Initiator) at /Users/yurivish/.julia/packages/Pluto/luIaC/src/webserver/Dynamic.jl:21
│     [16] process_ws_message(::Pluto.ServerSession, ::Dict{Any,Any}, ::HTTP.WebSockets.WebSocket{HTTP.ConnectionPool.Transaction{Sockets.TCPSocket}}) at /Users/yurivish/.julia/packages/Pluto/luIaC/src/webserver/WebServer.jl:357
│     [17] (::Pluto.var"#215#225"{Pluto.ServerSession,Base.RefValue{Function}})(::HTTP.WebSockets.WebSocket{HTTP.ConnectionPool.Transaction{Sockets.TCPSocket}}) at /Users/yurivish/.julia/packages/Pluto/luIaC/src/webserver/WebServer.jl:160
│     [18] upgrade(::Pluto.var"#215#225"{Pluto.ServerSession,Base.RefValue{Function}}, ::HTTP.Streams.Stream{HTTP.Messages.Request,HTTP.ConnectionPool.Transaction{Sockets.TCPSocket}}; binary::Bool) at /Users/yurivish/.julia/packages/HTTP/IAI92/src/WebSockets.jl:160
│     [19] upgrade at /Users/yurivish/.julia/packages/HTTP/IAI92/src/WebSockets.jl:142 [inlined]
│     [20] (::Pluto.var"#214#224"{Pluto.ServerSession,HTTP.Handlers.Router{Symbol("##253")},Base.RefValue{Function}})(::HTTP.Streams.Stream{HTTP.Messages.Request,HTTP.ConnectionPool.Transaction{Sockets.TCPSocket}}) at /Users/yurivish/.julia/packages/Pluto/luIaC/src/webserver/WebServer.jl:147
│     [21] handle at /Users/yurivish/.julia/packages/HTTP/IAI92/src/Handlers.jl:269 [inlined]
│     [22] #4 at /Users/yurivish/.julia/packages/HTTP/IAI92/src/Handlers.jl:345 [inlined]
│     [23] macro expansion at /Users/yurivish/.julia/packages/HTTP/IAI92/src/Servers.jl:367 [inlined]
│     [24] (::HTTP.Servers.var"#13#14"{HTTP.Handlers.var"#4#5"{HTTP.Handlers.StreamHandlerFunction{Pluto.var"#214#224"{Pluto.ServerSession,HTTP.Handlers.Router{Symbol("##253")},Base.RefValue{Function}}}},HTTP.ConnectionPool.Transaction{Sockets.TCPSocket},HTTP.Streams.Stream{HTTP.Messages.Request,HTTP.ConnectionPool.Transaction{Sockets.TCPSocket}}})() at ./task.jl:356
└ @ Pluto ~/.julia/packages/Pluto/luIaC/src/webserver/PutUpdates.jl:84
^C

Closing Pluto... Restart Julia for a fresh session.

Have a nice day! 🎈

This is on Julia 1.53 with Pluto v0.12.18:

julia> versioninfo()
Julia Version 1.5.3
Commit 788b2c77c1 (2020-11-09 13:37 UTC)
Platform Info:
  OS: macOS (x86_64-apple-darwin18.7.0)
  CPU: Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-9.0.1 (ORCJIT, skylake)

[fonsp]

Like #836, I think that this is caused by doing julia --eval "..." instead of typing these commands in the REPL. Can you check that?

[yurivish]

Hi @fonsp, I can confirm that when launching Pluto from the REPL I don't see those errors for this or #836.

julia> using Pluto; Pluto.run()

Opening http://localhost:1234/?secret=5gHM3tZV in your default browser... ~ have fun!

Press Ctrl+C in this terminal to stop Pluto

^C

Closing Pluto... Restart Julia for a fresh session.

Have a nice day! 🎈
      From worker 2:	    Fetching: [>

[fonsp]

Let's continue in #836