deps: cargo update (#510)

* hack

* Revert "hack"

This reverts commit d51c5b890439ec5ea46a10454801f9ca3593afca.

* deps: upgrade

completions/dust.bash

@@ -1,12 +1,16 @@
 _dust() {
     local i cur prev opts cmd
     COMPREPLY=()
-    cur="${COMP_WORDS[COMP_CWORD]}"
-    prev="${COMP_WORDS[COMP_CWORD-1]}"
+    if [[ "${BASH_VERSINFO[0]}" -ge 4 ]]; then
+        cur="$2"
+    else
+        cur="${COMP_WORDS[COMP_CWORD]}"
+    fi
+    prev="$3"
     cmd=""
     opts=""
 
-    for i in ${COMP_WORDS[@]}
+    for i in "${COMP_WORDS[@]:0:COMP_CWORD}"
     do
         case "${cmd},${i}" in
             ",$1")