Using the first of multiple matching destinations:

variable 'copiedContext' was never mutated; consider changing to 'let' constant

immutable value 'err' was never used; consider replacing with '_' or removing it

immutable value 'err' was never used; consider replacing with '_' or removing it

initialization of immutable value 'hostOnly' was never used; consider replacing with assignment to '_' or removing it

invalid character in Bundle Identifier. This string must be a uniform type identifier (UTI) that contains only alphanumeric (A-Z,a-z,0-9), hyphen (-), and period (.) characters. (in target 'rest_json_extrasTests' from project 'aws-sdk-swift')

invalid character in Bundle Identifier. This string must be a uniform type identifier (UTI) that contains only alphanumeric (A-Z,a-z,0-9), hyphen (-), and period (.) characters. (in target 'AWSJson1_1TestSDKTests' from project 'aws-sdk-swift')

invalid character in Bundle Identifier. This string must be a uniform type identifier (UTI) that contains only alphanumeric (A-Z,a-z,0-9), hyphen (-), and period (.) characters. (in target 'AWSJson1_0TestSDKTests' from project 'aws-sdk-swift')