Attach backtraces explicitly in error logging

To avoid ambiguity and confusion, do not assume that `catch_backtrace()`
is the backtrace associated with a logged exception. Instead, always
attach the backtrace explicitly.

base/logging.jl

@@ -175,11 +175,8 @@ There's also some key value pairs which have conventional meaning:
   * `maxlog=integer` should be used as a hint to the backend that the message
     should be displayed no more than `maxlog` times.
   * `exception=ex` should be used to transport an exception with a log message,
-    often used with `@error`. `AbstractLoggers` should assume that the
-    associated backtrace can be obtained from `catch_backtrace()`. If the log
-    message is emitted outside the catch block which generated `ex`, an
-    associated backtrace `bt` may be attached explicitly using
-    `exception=(ex,bt)`.
+    often used with `@error`. An associated backtrace `bt` may be attached
+    using the tuple `exception=(ex,bt)`.
 
 # Examples
 

base/pkg/entry.jl

@@ -602,7 +602,7 @@ function build(pkg::AbstractString, build_file::AbstractString, errfile::Abstrac
                 @error \"""
                     ------------------------------------------------------------
                     # Build failed for \$pkg
-                    \""" exception=err
+                    \""" exception=err,catch_backtrace()
                 serialize(f, pkg)
                 serialize(f, err)
             end
@@ -679,7 +679,7 @@ function updatehook!(pkgs::Vector, errs::Dict, seen::Set=Set())
                 @error """
                     ------------------------------------------------------------
                     # Update hook failed for $pkg
-                    """ exception=err
+                    """ exception=err,catch_backtrace()
                 errs[pkg] = err
             end
         end
@@ -739,7 +739,7 @@ function test!(pkg::AbstractString,
                 @error """
                     ------------------------------------------------------------
                     # Testing failed for $pkg
-                    """ exception=err
+                    """ exception=err,catch_backtrace()
                 push!(errs,pkg)
             end
         end

base/repl/LineEdit.jl

@@ -2317,7 +2317,7 @@ function prompt!(term::TextTerminal, prompt::ModalInterface, s::MIState = init_s
             try
                 status = fcn(s, kdata)
             catch e
-                @error "Error in the keymap" exception=e
+                @error "Error in the keymap" exception=e,catch_backtrace()
                 # try to cleanup and get `s` back to its original state before returning
                 transition(s, :reset)
                 transition(s, old_state)

base/replutil.jl

@@ -415,7 +415,7 @@ function showerror(io::IO, ex::MethodError)
     try
         show_method_candidates(io, ex, kwargs)
     catch ex
-        @error "Error showing method candidates, aborted" exception=ex
+        @error "Error showing method candidates, aborted" exception=ex,catch_backtrace()
     end
 end
 

stdlib/Distributed/src/cluster.jl

@@ -1074,7 +1074,7 @@ function terminate_all_workers()
             try
                 rmprocs(workers(); waitfor=5.0)
             catch _ex2
-                @error "Unable to terminate all workers" exception=_ex2
+                @error "Unable to terminate all workers" exception=_ex2,catch_backtrace()
             end
         end
     end

stdlib/Distributed/src/process_messages.jl

@@ -89,7 +89,7 @@ function deliver_result(sock::IO, msg, oid, value)
     catch e
         # terminate connection in case of serialization error
         # otherwise the reading end would hang
-        @error "Fatal error on process $(myid())" exception=e
+        @error "Fatal error on process $(myid())" exception=e,catch_backtrace()
         wid = worker_id_from_socket(sock)
         close(sock)
         if myid()==1
@@ -210,7 +210,7 @@ function message_handler_loop(r_stream::IO, w_stream::IO, incoming::Bool)
             # If unhandleable error occurred talking to pid 1, exit
             if wpid == 1
                 if isopen(w_stream)
-                    @error "Fatal error on process $(myid())" exception=e
+                    @error "Fatal error on process $(myid())" exception=e,catch_backtrace()
                 end
                 exit(1)
             end
@@ -341,7 +341,7 @@ function connect_to_peer(manager::ClusterManager, rpid::Int, wconfig::WorkerConf
         send_connection_hdr(w, true)
         send_msg_now(w, MsgHeader(), IdentifySocketMsg(myid()))
     catch e
-        @error "Error on $(myid()) while connecting to peer $rpid, exiting" exception=e
+        @error "Error on $(myid()) while connecting to peer $rpid, exiting" exception=e,catch_backtrace()
         exit(1)
     end
 end

stdlib/Logging/src/ConsoleLogger.jl

@@ -48,7 +48,7 @@ function showvalue(io, e::Tuple{Exception,Any})
     ex,bt = e
     showerror(io, ex, bt; backtrace = bt!=nothing)
 end
-showvalue(io, ex::Exception) = showvalue(io, (ex,catch_backtrace()))
+showvalue(io, ex::Exception) = showerror(io, ex)
 
 function default_logcolor(level)
     level < Info  ? Base.debug_color() :

stdlib/SuiteSparse/src/cholmod.jl

@@ -165,7 +165,7 @@ function __init__()
         end
 
     catch ex
-        @error "Error during initialization of module CHOLMOD" exception=ex
+        @error "Error during initialization of module CHOLMOD" exception=ex,catch_backtrace()
     end
 end