Check process probably crashed or hung up for 20 minutes ... killed
Most likely this happened in the example checks (?),
if not, ignore the following last lines of example output:
+ border.color = "brown",
+ header.text.color = "white",
+ body.text.color = "black")
<div>
  <div id="r2resize-windowcard-pane">
    <div class="r2resize-windowcard-title">Sample Window card</div>
    <div class="r2resize-windowcard-content"></div>
  </div>
  <div id="r2resize-windowcard-ghostpane"></div>
  <style>#r2resize-windowcard-pane{position:absolute;min-width:25%;height:45%;width:500px;top:20%;left:20%;margin:0;padding:0;z-index:99;border:2px solid brown;background:white;overflow:hidden}.r2resize-windowcard-title{background:brown;color:white;font-size:24px;height:40px;text-align:center}.r2resize-windowcard-content{padding:10px;color:black}#r2resize-windowcard-ghostpane{background:#999;opacity:.2;min-width:25%;height:45%;width:500px;top:20%;left:20%;position:absolute;margin:0;padding:0;z-index:98;-webkit-transition:.25s ease-in-out;-moz-transition:.25s ease-in-out;-ms-transition:.25s ease-in-out;-o-transition:.25s ease-in-out;transition:.25s ease-in-out}</style><script> "use strict";var onRightEdge,onBottomEdge,onLeftEdge,onTopEdge,rightScreenEdge,bottomScreenEdge,preSnapped,b,x,y,e,minWidth=60,minHeight=40,FULLSCREEN_MARGINS=-10,MARGINS=4,clicked=null,redraw=!1,pane=document.getElementById("r2resize-windowcard-pane"),ghostpane=document.getElementById("r2resize-windowcard-ghostpane");function setBounds(e,n,t,i,o){e.style.left=n+"px",e.style.top=t+"px",e.style.width=i+"px",e.style.height=o+"px"}function hintHide(){setBounds(ghostpane,b.left,b.top,b.width,b.height),ghostpane.style.opacity=0}function onTouchDown(e){onDown(e.touches[0]),e.preventDefault()}function onTouchMove(e){onMove(e.touches[0])}function onTouchEnd(e){0==e.touches.length&&onUp(e.changedTouches[0])}function onMouseDown(e){onDown(e),e.preventDefault()}function onDown(e){calc(e);var n=onRightEdge||onBottomEdge||onTopEdge||onLeftEdge;clicked={x:x,y:y,cx:e.clientX,cy:e.clientY,w:b.width,h:b.height,isResizing:n,isMoving:!n&&canMove(),onTopEdge:onTopEdge,onLeftEdge:onLeftEdge,onRightEdge:onRightEdge,onBottomEdge:onBottomEdge}}function canMove(){return 0<x&&x<b.width&&0<y&&y<b.height&&y<30}function calc(e){b=pane.getBoundingClientRect(),x=e.clientX-b.left,y=e.clientY-b.top,onTopEdge=y<MARGINS,onLeftEdge=x<MARGINS,onRightEdge=x>=b.width-MARGINS,onBottomEdge=y>=b.height-MARGINS,rightScreenEdge=window.innerWidth-MARGINS,bottomScreenEdge=window.innerHeight-MARGINS}function onMove(n){calc(n),e=n,redraw=!0}function animate(){var n;if(requestAnimationFrame(animate),redraw)return redraw=!1,clicked&&clicked.isResizing?(clicked.onRightEdge&&(pane.style.width=Math.max(x,minWidth)+"px"),clicked.onBottomEdge&&(pane.style.height=Math.max(y,minHeight)+"px"),clicked.onLeftEdge&&(n=Math.max(clicked.cx-e.clientX+clicked.w,minWidth),minWidth<n&&(pane.style.width=n+"px",pane.style.left=e.clientX+"px")),clicked.onTopEdge&&(n=Math.max(clicked.cy-e.clientY+clicked.h,minHeight),minHeight<n&&(pane.style.height=n+"px",pane.style.top=e.clientY+"px")),void hintHide()):clicked&&clicked.isMoving?(b.top<FULLSCREEN_MARGINS||b.left<FULLSCREEN_MARGINS||b.right>window.innerWidth-FULLSCREEN_MARGINS||b.bottom>window.innerHeight-FULLSCREEN_MARGINS?(setBounds(ghostpane,0,0,window.innerWidth,window.innerHeight),ghostpane.style.opacity=.2):b.top<MARGINS?(setBounds(ghostpane,0,0,window.innerWidth,window.innerHeight/2),ghostpane.style.opacity=.2):b.left<MARGINS?(setBounds(ghostpane,0,0,window.innerWidth/2,window.innerHeight),ghostpane.style.opacity=.2):b.right>rightScreenEdge?(setBounds(ghostpane,window.innerWidth/2,0,window.innerWidth/2,window.innerHeight),ghostpane.style.opacity=.2):b.bottom>bottomScreenEdge?(setBounds(ghostpane,0,window.innerHeight/2,window.innerWidth,window.innerWidth/2),ghostpane.style.opacity=.2):hintHide(),preSnapped?void setBounds(pane,e.clientX-preSnapped.width/2,e.clientY-Math.min(clicked.y,preSnapped.height),preSnapped.width,preSnapped.height):(pane.style.top=e.clientY-clicked.y+"px",void(pane.style.left=e.clientX-clicked.x+"px"))):void(onRightEdge&&onBottomEdge||onLeftEdge&&onTopEdge?pane.style.cursor="nwse-resize":onRightEdge&&onTopEdge||onBottomEdge&&onLeftEdge?pane.style.cursor="nesw-resize":onRightEdge||onLeftEdge?pane.style.cursor="ew-resize":onBottomEdge||onTopEdge?pane.style.cursor="ns-resize":canMove()?pane.style.cursor="move":pane.style.cursor="default")}function onUp(e){calc(e),clicked&&clicked.isMoving&&(e={width:b.width,height:b.height},preSnapped=b.top<FULLSCREEN_MARGINS||b.left<FULLSCREEN_MARGINS||b.right>window.innerWidth-FULLSCREEN_MARGINS||b.bottom>window.innerHeight-FULLSCREEN_MARGINS?(setBounds(pane,0,0,window.innerWidth,window.innerHeight),e):b.top<MARGINS?(setBounds(pane,0,0,window.innerWidth,window.innerHeight/2),e):b.left<MARGINS?(setBounds(pane,0,0,window.innerWidth/2,window.innerHeight),e):b.right>rightScreenEdge?(setBounds(pane,window.innerWidth/2,0,window.innerWidth/2,window.innerHeight),e):b.bottom>bottomScreenEdge?(setBounds(pane,0,window.innerHeight/2,window.innerWidth,window.innerWidth/2),e):null,hintHide()),clicked=null}pane.addEventListener("mousedown",onMouseDown),document.addEventListener("mousemove",onMove),document.addEventListener("mouseup",onUp),pane.addEventListener("touchstart",onTouchDown),document.addEventListener("touchmove",onTouchMove),document.addEventListener("touchend",onTouchEnd),animate(); </script>
</div>
> 
> 
> 
> 
> ### * <FOOTER>
> ###
> cleanEx()
> options(digits = 7L)
> base::cat("Time elapsed: ", proc.time() - base::get("ptime", pos = 'CheckExEnv'),"\n")
Time elapsed:  1.2 0.25 1.57 NA NA 
> grDevices::dev.off()
null device 
          1 
> ###
> ### Local variables: ***
> ### mode: outline-minor ***
> ### outline-regexp: "\\(> \\)?### [*]+" ***
> ### End: ***
> quit('no')
======== End of example output (where/before crash/hang up occured ?) ========