43             self.wtr.write_field("true")  in serialize_bool()
45             self.wtr.write_field("false")  in serialize_bool()
51         self.wtr.write_field(buffer.format(v))  in serialize_i8()
56         self.wtr.write_field(buffer.format(v))  in serialize_i16()
61         self.wtr.write_field(buffer.format(v))  in serialize_i32()
66         self.wtr.write_field(buffer.format(v))  in serialize_i64()
77         self.wtr.write_field(buffer.format(v))  in serialize_u8()
82         self.wtr.write_field(buffer.format(v))  in serialize_u16()
87         self.wtr.write_field(buffer.format(v))  in serialize_u32()
92         self.wtr.write_field(buffer.format(v))  in serialize_u64()
103         self.wtr.write_field(buffer.format(v))  in serialize_f32()
108         self.wtr.write_field(buffer.format(v))  in serialize_f64()
112         self.wtr.write_field(v.encode_utf8(&mut [0; 4]))  in serialize_char()
116         self.wtr.write_field(value)  in serialize_str()
120         self.wtr.write_field(value)  in serialize_bytes()
124         self.wtr.write_field(&[])  in serialize_none()
142         self.wtr.write_field(name)  in serialize_unit_struct()
151         self.wtr.write_field(variant)  in serialize_unit_variant()
787         self.wtr.write_field(key)?;  in serialize_field()