python3.8 says "cannot", <3.8 says "cant"

test-data/unit/semanal-errors.test

@@ -361,81 +361,107 @@ main:2: error: "yield" outside function
 [case testInvalidLvalues1]
 1 = 1
 [out]
+main:1: error: can't assign to literal
+[out version>=3.8]
 main:1: error: cannot assign to literal
 [out version>=3.10]
 main:1: error: cannot assign to literal here. Maybe you meant '==' instead of '='?
 
 [case testInvalidLvalues2]
 (1) = 1
 [out]
+main:1: error: can't assign to literal
+[out version>=3.8]
 main:1: error: cannot assign to literal
 [out version>=3.10]
 main:1: error: cannot assign to literal here. Maybe you meant '==' instead of '='?
 
 [case testInvalidLvalues3]
 (1, 1) = 1
 [out]
+main:1: error: can't assign to literal
+[out version>=3.8]
 main:1: error: cannot assign to literal
 
 [case testInvalidLvalues4]
 [1, 1] = 1
 [out]
+main:1: error: can't assign to literal
+[out version>=3.8]
 main:1: error: cannot assign to literal
 
 [case testInvalidLvalues6]
 x = y = z = 1  # ok
 x, (y, 1) = 1
 [out]
+main:2: error: can't assign to literal
+[out version>=3.8]
 main:2: error: cannot assign to literal
 
 [case testInvalidLvalues7]
 x, [y, 1] = 1
 [out]
+main:1: error: can't assign to literal
+[out version>=3.8]
 main:1: error: cannot assign to literal
 
 [case testInvalidLvalues8]
 x, [y, [z, 1]] = 1
 [out]
+main:1: error: can't assign to literal
+[out version>=3.8]
 main:1: error: cannot assign to literal
 
 [case testInvalidLvalues9]
 x, (y) = 1 # ok
 x, (y, (z, z)) = 1 # ok
 x, (y, (z, 1)) = 1
 [out]
+main:3: error: can't assign to literal
+[out version>=3.8]
 main:3: error: cannot assign to literal
 
 [case testInvalidLvalues10]
 x + x = 1
 [out]
+main:1: error: can't assign to operator
+[out version>=3.8]
 main:1: error: cannot assign to operator
 [out version>=3.10]
 main:1: error: cannot assign to expression here. Maybe you meant '==' instead of '='?
 
 [case testInvalidLvalues11]
 -x = 1
 [out]
+main:1: error: can't assign to operator
+[out version>=3.8]
 main:1: error: cannot assign to operator
 [out version>=3.10]
 main:1: error: cannot assign to expression here. Maybe you meant '==' instead of '='?
 
 [case testInvalidLvalues12]
 1.1 = 1
 [out]
+main:1: error: can't assign to literal
+[out version>=3.8]
 main:1: error: cannot assign to literal
 [out version>=3.10]
 main:1: error: cannot assign to literal here. Maybe you meant '==' instead of '='?
 
 [case testInvalidLvalues13]
 'x' = 1
 [out]
+main:1: error: can't assign to literal
+[out version>=3.8]
 main:1: error: cannot assign to literal
 [out version>=3.10]
 main:1: error: cannot assign to literal here. Maybe you meant '==' instead of '='?
 
 [case testInvalidLvalues14]
 x() = 1
 [out]
+main:1: error: can't assign to function call
+[out version>=3.8]
 main:1: error: cannot assign to function call
 [out version>=3.10]
 main:1: error: cannot assign to function call here. Maybe you meant '==' instead of '='?
@@ -897,6 +923,8 @@ import typing
 def f(): pass
 f() = 1 # type: int
 [out]
+main:3: error: can't assign to function call
+[out version>=3.8]
 main:3: error: cannot assign to function call
 [out version>=3.10]
 main:3: error: cannot assign to function call here. Maybe you meant '==' instead of '='?
@@ -975,6 +1003,8 @@ x, y = 1, 2 # type: int # E: Tuple type expected for multiple variables
 a = 1
 a() = None # type: int
 [out]
+main:2: error: can't assign to function call
+[out version>=3.8]
 main:2: error: cannot assign to function call
 [out version>=3.10]
 main:2: error: cannot assign to function call here. Maybe you meant '==' instead of '='?
@@ -1290,6 +1320,8 @@ import typing
 def f() -> None:
     f() = 1  # type: int
 [out]
+main:3: error: can't assign to function call
+[out version>=3.8]
 main:3: error: cannot assign to function call
 [out version>=3.10]
 main:3: error: cannot assign to function call here. Maybe you meant '==' instead of '='?