ci: add concurrency (#12) #58
Annotations
3 errors
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                          Cargo build
                        
                      
                       Canceling since a higher priority waiting request for Cargo build-refs/heads/master exists | 
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                          build (nightly)
                        
                      
                       Canceling since a higher priority waiting request for Cargo build-refs/heads/master exists | 
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                          build (nightly)
                        
                      
                       The operation was canceled. |