warning: unnecessary semicolon
       --> src/de.rs:371:10
        |
    371 |         };
        |          ^ help: remove
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_semicolon
        = note: `-W clippy::unnecessary-semicolon` implied by `-W clippy::pedantic`
        = help: to override `-W clippy::pedantic` add `#[allow(clippy::unnecessary_semicolon)]`

False is the default value since Cargo PR 11499.

Convert html links to intra-doc links

Document behavior of write_f32/f64 on non-finite floats

    warning: the following explicit lifetimes could be elided: 'a
        --> src/de.rs:2189:11
         |
    2189 | impl<'de, 'a, R> MapKey<'a, R>
         |           ^^            ^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
         = note: `-W clippy::elidable-lifetime-names` implied by `-W clippy::pedantic`
         = help: to override `-W clippy::pedantic` add `#[allow(clippy::elidable_lifetime_names)]`
    help: elide the lifetimes
         |
    2189 - impl<'de, 'a, R> MapKey<'a, R>
    2189 + impl<'de, R> MapKey<'_, R>
         |

    warning: the following explicit lifetimes could be elided: 'a
        --> src/de.rs:2196:11
         |
    2196 | impl<'de, 'a, R> de::Deserializer<'de> for MapKey<'a, R>
         |           ^^                                      ^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
         |
    2196 - impl<'de, 'a, R> de::Deserializer<'de> for MapKey<'a, R>
    2196 + impl<'de, R> de::Deserializer<'de> for MapKey<'_, R>
         |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/error.rs:467:6
        |
    467 | impl<'a> Display for JsonUnexpected<'a> {
        |      ^^                             ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    467 - impl<'a> Display for JsonUnexpected<'a> {
    467 + impl Display for JsonUnexpected<'_> {
        |

    warning: the following explicit lifetimes could be elided: 'de
       --> src/map.rs:601:6
        |
    601 | impl<'de> de::IntoDeserializer<'de, Error> for Map<String, Value> {
        |      ^^^                       ^^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    601 - impl<'de> de::IntoDeserializer<'de, Error> for Map<String, Value> {
    601 + impl de::IntoDeserializer<'_, Error> for Map<String, Value> {
        |

    warning: the following explicit lifetimes could be elided: 'a
      --> src/ser.rs:31:6
       |
    31 | impl<'a, W> Serializer<W, PrettyFormatter<'a>>
       |      ^^                                   ^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
       |
    31 - impl<'a, W> Serializer<W, PrettyFormatter<'a>>
    31 + impl<W> Serializer<W, PrettyFormatter<'_>>
       |

    warning: the following explicit lifetimes could be elided: 'ser
       --> src/ser.rs:420:14
        |
    420 |         impl<'ser, W, F> Write for Adapter<'ser, W, F>
        |              ^^^^                          ^^^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    420 -         impl<'ser, W, F> Write for Adapter<'ser, W, F>
    420 +         impl<W, F> Write for Adapter<'_, W, F>
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/ser.rs:480:6
        |
    480 | impl<'a, W, F> ser::SerializeSeq for Compound<'a, W, F>
        |      ^^                                       ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    480 - impl<'a, W, F> ser::SerializeSeq for Compound<'a, W, F>
    480 + impl<W, F> ser::SerializeSeq for Compound<'_, W, F>
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/ser.rs:527:6
        |
    527 | impl<'a, W, F> ser::SerializeTuple for Compound<'a, W, F>
        |      ^^                                         ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    527 - impl<'a, W, F> ser::SerializeTuple for Compound<'a, W, F>
    527 + impl<W, F> ser::SerializeTuple for Compound<'_, W, F>
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/ser.rs:549:6
        |
    549 | impl<'a, W, F> ser::SerializeTupleStruct for Compound<'a, W, F>
        |      ^^                                               ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    549 - impl<'a, W, F> ser::SerializeTupleStruct for Compound<'a, W, F>
    549 + impl<W, F> ser::SerializeTupleStruct for Compound<'_, W, F>
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/ser.rs:571:6
        |
    571 | impl<'a, W, F> ser::SerializeTupleVariant for Compound<'a, W, F>
        |      ^^                                                ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    571 - impl<'a, W, F> ser::SerializeTupleVariant for Compound<'a, W, F>
    571 + impl<W, F> ser::SerializeTupleVariant for Compound<'_, W, F>
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/ser.rs:609:6
        |
    609 | impl<'a, W, F> ser::SerializeMap for Compound<'a, W, F>
        |      ^^                                       ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    609 - impl<'a, W, F> ser::SerializeMap for Compound<'a, W, F>
    609 + impl<W, F> ser::SerializeMap for Compound<'_, W, F>
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/ser.rs:681:6
        |
    681 | impl<'a, W, F> ser::SerializeStruct for Compound<'a, W, F>
        |      ^^                                          ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    681 - impl<'a, W, F> ser::SerializeStruct for Compound<'a, W, F>
    681 + impl<W, F> ser::SerializeStruct for Compound<'_, W, F>
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/ser.rs:727:6
        |
    727 | impl<'a, W, F> ser::SerializeStructVariant for Compound<'a, W, F>
        |      ^^                                                 ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    727 - impl<'a, W, F> ser::SerializeStructVariant for Compound<'a, W, F>
    727 + impl<W, F> ser::SerializeStructVariant for Compound<'_, W, F>
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/ser.rs:793:6
        |
    793 | impl<'a, W, F> ser::Serializer for MapKeySerializer<'a, W, F>
        |      ^^                                             ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    793 - impl<'a, W, F> ser::Serializer for MapKeySerializer<'a, W, F>
    793 + impl<W, F> ser::Serializer for MapKeySerializer<'_, W, F>
        |

    warning: the following explicit lifetimes could be elided: 'a
        --> src/ser.rs:1979:6
         |
    1979 | impl<'a> Default for PrettyFormatter<'a> {
         |      ^^                              ^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
         |
    1979 - impl<'a> Default for PrettyFormatter<'a> {
    1979 + impl Default for PrettyFormatter<'_> {
         |

    warning: the following explicit lifetimes could be elided: 'a
        --> src/ser.rs:1985:6
         |
    1985 | impl<'a> Formatter for PrettyFormatter<'a> {
         |      ^^                                ^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
         |
    1985 - impl<'a> Formatter for PrettyFormatter<'a> {
    1985 + impl Formatter for PrettyFormatter<'_> {
         |

    warning: the following explicit lifetimes could be elided: 'a, 'b
       --> src/value/mod.rs:227:14
        |
    227 |         impl<'a, 'b> io::Write for WriterFormatter<'a, 'b> {
        |              ^^  ^^                                ^^  ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    227 -         impl<'a, 'b> io::Write for WriterFormatter<'a, 'b> {
    227 +         impl io::Write for WriterFormatter<'_, '_> {
        |

    warning: the following explicit lifetimes could be elided: 'de
       --> src/value/de.rs:526:6
        |
    526 | impl<'de> IntoDeserializer<'de, Error> for Value {
        |      ^^^                   ^^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    526 - impl<'de> IntoDeserializer<'de, Error> for Value {
    526 + impl IntoDeserializer<'_, Error> for Value {
        |

    warning: the following explicit lifetimes could be elided: 'de
        --> src/value/de.rs:1343:6
         |
    1343 | impl<'de> Visitor<'de> for KeyClassifier {
         |      ^^^          ^^^
         |
         = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
         |
    1343 - impl<'de> Visitor<'de> for KeyClassifier {
    1343 + impl Visitor<'_> for KeyClassifier {
         |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/value/index.rs:146:6
        |
    146 | impl<'a> Display for Type<'a> {
        |      ^^                   ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    146 - impl<'a> Display for Type<'a> {
    146 + impl Display for Type<'_> {
        |

    warning: the following explicit lifetimes could be elided: 'de
       --> src/number.rs:403:14
        |
    403 |         impl<'de> Visitor<'de> for NumberVisitor {
        |              ^^^          ^^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    403 -         impl<'de> Visitor<'de> for NumberVisitor {
    403 +         impl Visitor<'_> for NumberVisitor {
        |

    warning: the following explicit lifetimes could be elided: 'b, 'c
       --> src/read.rs:132:6
        |
    132 | impl<'b, 'c, T> Deref for Reference<'b, 'c, T>
        |      ^^  ^^                         ^^  ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    132 - impl<'b, 'c, T> Deref for Reference<'b, 'c, T>
    132 + impl<T> Deref for Reference<'_, '_, T>
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/read.rs:541:6
        |
    541 | impl<'a> private::Sealed for SliceRead<'a> {}
        |      ^^                                ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    541 - impl<'a> private::Sealed for SliceRead<'a> {}
    541 + impl private::Sealed for SliceRead<'_> {}
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/read.rs:679:6
        |
    679 | impl<'a> private::Sealed for StrRead<'a> {}
        |      ^^                              ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    679 - impl<'a> private::Sealed for StrRead<'a> {}
    679 + impl private::Sealed for StrRead<'_> {}
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/read.rs:833:6
        |
    833 | impl<'a> Fused for SliceRead<'a> {}
        |      ^^                      ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    833 - impl<'a> Fused for SliceRead<'a> {}
    833 + impl Fused for SliceRead<'_> {}
        |

    warning: the following explicit lifetimes could be elided: 'a
       --> src/read.rs:834:6
        |
    834 | impl<'a> Fused for StrRead<'a> {}
        |      ^^                    ^^
        |
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
    help: elide the lifetimes
        |
    834 - impl<'a> Fused for StrRead<'a> {}
    834 + impl Fused for StrRead<'_> {}
        |

    warning: the following explicit lifetimes could be elided: 'de
      --> tests/regression/issue845.rs:12:6
       |
    12 | impl<'de, T> serde::de::Visitor<'de> for NumberVisitor<T>
       |      ^^^                        ^^^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#elidable_lifetime_names
       = note: `-W clippy::elidable-lifetime-names` implied by `-W clippy::pedantic`
       = help: to override `-W clippy::pedantic` add `#[allow(clippy::elidable_lifetime_names)]`
    help: elide the lifetimes
       |
    12 - impl<'de, T> serde::de::Visitor<'de> for NumberVisitor<T>
    12 + impl<T> serde::de::Visitor<'_> for NumberVisitor<T>
       |

    warning: calling .bytes() is very inefficient when data is not in memory
       --> src/read.rs:202:40
        |
    202 |             iter: LineColIterator::new(reader.bytes()),
        |                                        ^^^^^^^^^^^^^^
        |
        = help: consider using `BufReader`
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unbuffered_bytes
        = note: `-W clippy::unbuffered-bytes` implied by `-W clippy::all`
        = help: to override `-W clippy::all` add `#[allow(clippy::unbuffered_bytes)]`

Delete unused gcc installation