title: lambda expressions are not supported in -source 1.7
body: <p>I have maven project opened in Eclipse. But when I do clean and install, I get above error.</p>
  
  <p>I changed my build path to use SE 1.8 and my compiler is also configured to use 1.8. You can see that in following screen shots.</p>
  
  <p><a href="https://i.stack.imgur.com/9r1Y1.png" rel="noreferrer"><img src="https://i.stack.imgur.com/9r1Y1.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/uoQl6.png" rel="noreferrer"><img src="https://i.stack.imgur.com/uoQl6.png" alt="enter image description here"></a></p>
  
  <p>I am seeing little red crosses in project explorer too. You can see that in following picture.</p>
  
  <p><a href="https://i.stack.imgur.com/QYKYz.png" rel="noreferrer"><img src="https://i.stack.imgur.com/QYKYz.png" alt="enter image description here"></a></p>
  
  <p>I am not sure why maven is using SE 1.7 when I have configured it to use 1.8 in Eclipse.</p>