// CHECK: {{.*}}candidate function not viable: no known conversion from 'foo<{{.}}[0;1;36mdouble{{.}}[0m>' to 'foo<{{.}}[0;1;36mint{{.}}[0m>' for 1st argument{{.}}[0m
// CHECK: {{.*}}non-const lvalue reference to type 'foo<{{.}}[0;1;36mdouble{{.}}[0m{{.}}[1m>' cannot bind to a value of unrelated type 'foo<{{.}}[0;1;36mint{{.}}[0m{{.}}[1m>'{{.}}[0m
// CHECK: {{.*}}candidate function not viable: no known conversion from 'vector<const vector<{{.}}[0;1;36mconst{{ ?.}}[0m{{ ?}}int>>' to 'vector<const vector<int>>' for 1st argument
// TREE: {{.*}}candidate function not viable: no known conversion from argument type to parameter type for 1st argument
// CHECK: {{.*}}candidate function not viable: no known conversion from 'vector<{{.}}[0;1;36mconst{{ ?.}}[0m{{ ?}}vector<[...]>>' to 'vector<vector<[...]>>' for 1st argument
// TREE: {{.*}}candidate function not viable: no known conversion from argument type to parameter type for 1st argument
// CHECK: candidate function not viable: no known conversion from 'vector<vector<[...]>>' to 'vector<{{.}}[0;1;36mconst{{ ?.}}[0m{{ ?}}vector<[...]>>' for 1st argument
// TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
// CHECK: candidate function not viable: no known conversion from 'vector<{{.}}[0;1;36mconst{{ ?.}}[0m{{ ?}}vector<[...]>>' to 'vector<{{.}}[0;1;36mvolatile{{ ?.}}[0m{{ ?}}vector<[...]>>' for 1st argument
// TREE: no matching function for call to 'set18'
// TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument
// CHECK: candidate function not viable: no known conversion from 'vector<const vector<[...]>>' to 'vector<const {{.}}[0;1;36mvolatile{{ ?.}}[0m{{ ?}}vector<[...]>>' for 1st argument
// TREE: candidate function not viable: no known conversion from argument type to parameter type for 1st argument