backtrace()
  tramp-signal-hook-function(file-error ("‘echo \\\"`uname -sr`\\\"’ does not return a valid Lis..."))
  signal(file-error ("‘echo \\\"`uname -sr`\\\"’ does not return a valid Lis..."))
  tramp-maybe-open-connection((tramp-file-name "ssh" nil nil "slc16ilg" nil "/tmp/foo" nil))
  tramp-send-command((tramp-file-name "ssh" nil nil "slc16ilg" nil "/tmp/foo" nil) "test 0 2>/dev/null; echo tramp_exit_status $?")
  tramp-send-command-and-check((tramp-file-name "ssh" nil nil "slc16ilg" nil "/tmp/foo" nil) "test 0")
  tramp-get-test-command((tramp-file-name "ssh" nil nil "slc16ilg" nil "/tmp/foo" nil))
  tramp-run-test("-d" "/ssh:slc16ilg:/tmp/foo")
  tramp-sh-handle-file-directory-p("/ssh:slc16ilg:/tmp/foo")
  apply(tramp-sh-handle-file-directory-p "/ssh:slc16ilg:/tmp/foo")
  tramp-sh-file-name-handler(file-directory-p "/ssh:slc16ilg:/tmp/foo")
  apply(tramp-sh-file-name-handler file-directory-p "/ssh:slc16ilg:/tmp/foo")
  tramp-file-name-handler(file-directory-p "/ssh:slc16ilg:/tmp/foo")
  file-directory-p("/ssh:slc16ilg:/tmp/foo")
  find-file-noselect("/ssh:slc16ilg:/tmp/foo")
  #f(compiled-function (displayable-buffers dir line column name) #<bytecode 0x1fd8144a3cb9>)((nil) "~/" (0) (0) "/ssh:slc16ilg:/tmp/foo")
  command-line-1(("/ssh:slc16ilg:/tmp/foo"))
  command-line()
  normal-top-level()