<p dir="auto">Julia doesn't honor USE_SYSTEM_LIBSSH2, and I can't keep Julia from trying to download LibSSH2.</p>
<p dir="auto">On v1.0.2 I used a return statement from within a let block that got assigned to a variable.  This didn't work as I expected, but it also didn't cause any errors.  The surprising side effect was that the variable assigned to was never actually created.</p>
<div class="highlight highlight-source-julia notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="julia&gt; x = let
           # some ugly calc
           42
       end
42

julia&gt; x
42

julia&gt; y = let
           # some ugly calc
           return 42
       end
42

julia&gt; y
ERROR: UndefVarError: y not defined"><pre class="notranslate">julia<span class="pl-k">&gt;</span> x <span class="pl-k">=</span> <span class="pl-k">let</span>
           <span class="pl-c"><span class="pl-c">#</span> some ugly calc</span>
           <span class="pl-c1">42</span>
       <span class="pl-k">end</span>
<span class="pl-c1">42</span>

julia<span class="pl-k">&gt;</span> x
<span class="pl-c1">42</span>

julia<span class="pl-k">&gt;</span> y <span class="pl-k">=</span> <span class="pl-k">let</span>
           <span class="pl-c"><span class="pl-c">#</span> some ugly calc</span>
           <span class="pl-k">return</span> <span class="pl-c1">42</span>
       <span class="pl-k">end</span>
<span class="pl-c1">42</span>

julia<span class="pl-k">&gt;</span> y
ERROR<span class="pl-k">:</span> UndefVarError<span class="pl-k">:</span> y not defined</pre></div>