html2md$ cargo +nightly fix --edition-idioms
   Compiling rand_core v0.4.2
   Compiling autocfg v0.1.7
   Compiling libc v0.2.81
   Compiling proc-macro2 v1.0.24
   Compiling unicode-xid v0.2.1
   Compiling siphasher v0.2.3
   Compiling syn v1.0.53
   Compiling serde v1.0.118
   Compiling string_cache_shared v0.3.0
   Compiling proc-macro2 v0.4.30
   Compiling ryu v1.0.5
   Compiling serde_derive v1.0.118
   Compiling unicode-xid v0.1.0
   Compiling serde_json v1.0.60
    Checking new_debug_unreachable v1.0.4
   Compiling syn v0.15.44
   Compiling itoa v0.4.6
   Compiling autocfg v1.0.1
    Checking mac v0.1.1
    Checking gimli v0.23.0
    Checking lazy_static v1.4.0
    Checking utf-8 v0.7.5
   Compiling log v0.4.11
    Checking adler v0.2.3
   Compiling failure_derive v0.1.8
    Checking precomputed-hash v0.1.1
    Checking object v0.22.0
    Checking rustc-demangle v0.1.18
    Checking cfg-if v1.0.0
    Checking cfg-if v0.1.10
   Compiling phf_shared v0.7.24
   Compiling rand_core v0.3.1
   Compiling rand_jitter v0.1.4
   Compiling rand_pcg v0.1.2
   Compiling rand_chacha v0.1.1
   Compiling rand v0.6.5
    Checking futf v0.1.4
   Compiling rand_isaac v0.1.1
   Compiling rand_xorshift v0.1.1
   Compiling rand_hc v0.1.0
   Compiling miniz_oxide v0.4.3
    Checking phf v0.7.24
    Checking tendril v0.4.1
   Compiling quote v1.0.7
   Compiling rand_os v0.1.3
    Checking addr2line v0.14.0
   Compiling quote v0.6.13
    Checking backtrace v0.3.55
   Compiling phf_generator v0.7.24
   Compiling string_cache_codegen v0.4.4
   Compiling phf_codegen v0.7.24
   Compiling string_cache v0.7.5
   Compiling synstructure v0.12.4
    Checking failure v0.1.8
   Compiling html5ever v0.22.6 (https://github.com/jimblandy/html5ever.git?branch=rcdom-debug#f5947d9b)
   Compiling markup5ever v0.7.5 (https://github.com/jimblandy/html5ever.git?branch=rcdom-debug#f5947d9b)
    Checking html2md v0.1.0 (/home/jimb/rust/book/html2md)
warning: failed to automatically apply fixes suggested by rustc to crate `html2md`

after fixes were automatically applied the compiler reported errors within these files:

  * src/macros.rs

This likely indicates a bug in either rustc or cargo itself,
and we would appreciate a bug report! You're likely to see 
a number of compiler warnings after this message which cargo
attempted to fix but failed. If you could open an issue at
https://github.com/rust-lang/rust/issues
quoting the full output of this command we'd be very appreciative!
Note that you may be able to make some more progress in the near-term
fixing code with the `--broken-code` flag

The following errors were reported:
error: expected parameter name, found `'_`
  --> src/macros.rs:19:59
   |
19 |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
   |                                                             ^^ expected parameter name
   | 
  ::: src/dom.rs:55:1
   |
55 | / stringy_enum! {
56 | |     pub enum Tag (parse error DomError::ParseTag) {
57 | |         A = "a",
58 | |         Aside = "aside",
...  |
94 | |     }
95 | | }
   | |_- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: expected one of `!`, `)`, `,`, or `::`, found `<`
  --> src/macros.rs:19:58
   |
19 |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
   |                                                            ^
   |                                                            |
   |                                                            expected one of `!`, `)`, `,`, or `::`
   |                                                            help: missing `,`
   | 
  ::: src/dom.rs:55:1
   |
55 | / stringy_enum! {
56 | |     pub enum Tag (parse error DomError::ParseTag) {
57 | |         A = "a",
58 | |         Aside = "aside",
...  |
94 | |     }
95 | | }
   | |_- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: expected parameter name, found `'_`
   --> src/macros.rs:19:59
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
    |                                                             ^^ expected parameter name
    | 
   ::: src/dom.rs:106:1
    |
106 | / stringy_enum! {
107 | |     pub enum AttributeName (parse error DomError::ParseAttributeName) {
108 | |         Align = "align",
109 | |         Alt = "alt",
...   |
133 | |     }
134 | | }
    | |_- in this macro invocation
    |
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: expected one of `!`, `)`, `,`, or `::`, found `<`
   --> src/macros.rs:19:58
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
    |                                                            ^
    |                                                            |
    |                                                            expected one of `!`, `)`, `,`, or `::`
    |                                                            help: missing `,`
    | 
   ::: src/dom.rs:106:1
    |
106 | / stringy_enum! {
107 | |     pub enum AttributeName (parse error DomError::ParseAttributeName) {
108 | |         Align = "align",
109 | |         Alt = "alt",
...   |
133 | |     }
134 | | }
    | |_- in this macro invocation
    |
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: expected parameter name, found `'_`
  --> src/macros.rs:19:59
   |
19 |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
   |                                                             ^^ expected parameter name
   | 
  ::: src/tree.rs:22:1
   |
22 | / stringy_enum! {
23 | |     pub enum SectionKind (parse error TreeError::ParseSectionKind) {
24 | |         Preface = "preface",
25 | |         Chapter = "chapter",
...  |
28 | |     }
29 | | }
   | |_- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: expected one of `!`, `)`, `,`, or `::`, found `<`
  --> src/macros.rs:19:58
   |
19 |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
   |                                                            ^
   |                                                            |
   |                                                            expected one of `!`, `)`, `,`, or `::`
   |                                                            help: missing `,`
   | 
  ::: src/tree.rs:22:1
   |
22 | / stringy_enum! {
23 | |     pub enum SectionKind (parse error TreeError::ParseSectionKind) {
24 | |         Preface = "preface",
25 | |         Chapter = "chapter",
...  |
28 | |     }
29 | | }
   | |_- in this macro invocation
   |
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: expected parameter name, found `'_`
   --> src/macros.rs:19:59
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
    |                                                             ^^ expected parameter name
    | 
   ::: src/tree.rs:131:1
    |
131 | / stringy_enum! {
132 | |     pub enum Language (parse error TreeError::ParseLanguage) {
133 | |         Console = "console",
134 | |         Cpp = "cpp",
...   |
144 | |     }
145 | | }
    | |_- in this macro invocation
    |
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: expected one of `!`, `)`, `,`, or `::`, found `<`
   --> src/macros.rs:19:58
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
    |                                                            ^
    |                                                            |
    |                                                            expected one of `!`, `)`, `,`, or `::`
    |                                                            help: missing `,`
    | 
   ::: src/tree.rs:131:1
    |
131 | / stringy_enum! {
132 | |     pub enum Language (parse error TreeError::ParseLanguage) {
133 | |         Console = "console",
134 | |         Cpp = "cpp",
...   |
144 | |     }
145 | | }
    | |_- in this macro invocation
    |
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: expected parameter name, found `'_`
   --> src/macros.rs:19:59
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
    |                                                             ^^ expected parameter name
    | 
   ::: src/tree.rs:177:1
    |
177 | / stringy_enum! {
178 | |     pub enum FlagKind (parse error TreeError::ParseFlagKind) {
179 | |         Tip = "tip",
180 | |         Note = "note",
181 | |         Warning = "warning",
182 | |     }
183 | | }
    | |_- in this macro invocation
    |
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: expected one of `!`, `)`, `,`, or `::`, found `<`
   --> src/macros.rs:19:58
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
    |                                                            ^
    |                                                            |
    |                                                            expected one of `!`, `)`, `,`, or `::`
    |                                                            help: missing `,`
    | 
   ::: src/tree.rs:177:1
    |
177 | / stringy_enum! {
178 | |     pub enum FlagKind (parse error TreeError::ParseFlagKind) {
179 | |         Tip = "tip",
180 | |         Note = "note",
181 | |         Warning = "warning",
182 | |     }
183 | | }
    | |_- in this macro invocation
    |
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0050]: method `fmt` has 3 parameters but the declaration in trait `std::fmt::Display::fmt` has 2
  --> src/macros.rs:19:20
   |
19 |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 parameters, found 3
   | 
  ::: src/dom.rs:55:1
   |
55 | / stringy_enum! {
56 | |     pub enum Tag (parse error DomError::ParseTag) {
57 | |         A = "a",
58 | |         Aside = "aside",
...  |
94 | |     }
95 | | }
   | |_- in this macro invocation
   |
   = note: `fmt` from trait: `fn(&Self, &mut Formatter<'_>) -> std::result::Result<(), std::fmt::Error>`
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0050]: method `fmt` has 3 parameters but the declaration in trait `std::fmt::Display::fmt` has 2
   --> src/macros.rs:19:20
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 parameters, found 3
    | 
   ::: src/dom.rs:106:1
    |
106 | / stringy_enum! {
107 | |     pub enum AttributeName (parse error DomError::ParseAttributeName) {
108 | |         Align = "align",
109 | |         Alt = "alt",
...   |
133 | |     }
134 | | }
    | |_- in this macro invocation
    |
    = note: `fmt` from trait: `fn(&Self, &mut Formatter<'_>) -> std::result::Result<(), std::fmt::Error>`
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0050]: method `fmt` has 3 parameters but the declaration in trait `std::fmt::Display::fmt` has 2
  --> src/macros.rs:19:20
   |
19 |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
   |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 parameters, found 3
   | 
  ::: src/tree.rs:22:1
   |
22 | / stringy_enum! {
23 | |     pub enum SectionKind (parse error TreeError::ParseSectionKind) {
24 | |         Preface = "preface",
25 | |         Chapter = "chapter",
...  |
28 | |     }
29 | | }
   | |_- in this macro invocation
   |
   = note: `fmt` from trait: `fn(&Self, &mut Formatter<'_>) -> std::result::Result<(), std::fmt::Error>`
   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0050]: method `fmt` has 3 parameters but the declaration in trait `std::fmt::Display::fmt` has 2
   --> src/macros.rs:19:20
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 parameters, found 3
    | 
   ::: src/tree.rs:131:1
    |
131 | / stringy_enum! {
132 | |     pub enum Language (parse error TreeError::ParseLanguage) {
133 | |         Console = "console",
134 | |         Cpp = "cpp",
...   |
144 | |     }
145 | | }
    | |_- in this macro invocation
    |
    = note: `fmt` from trait: `fn(&Self, &mut Formatter<'_>) -> std::result::Result<(), std::fmt::Error>`
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error[E0050]: method `fmt` has 3 parameters but the declaration in trait `std::fmt::Display::fmt` has 2
   --> src/macros.rs:19:20
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter<'_><'_><'_><'_><'_>) -> std::fmt::Result {
    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected 2 parameters, found 3
    | 
   ::: src/tree.rs:177:1
    |
177 | / stringy_enum! {
178 | |     pub enum FlagKind (parse error TreeError::ParseFlagKind) {
179 | |         Tip = "tip",
180 | |         Note = "note",
181 | |         Warning = "warning",
182 | |     }
183 | | }
    | |_- in this macro invocation
    |
    = note: `fmt` from trait: `fn(&Self, &mut Formatter<'_>) -> std::result::Result<(), std::fmt::Error>`
    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 15 previous errors

For more information about this error, try `rustc --explain E0050`.
Original diagnostics will follow.

warning: hidden lifetime parameters in types are deprecated
  --> src/macros.rs:19:35
   |
19 |               fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
   |                                     ^^^^^^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
   | 
  ::: src/dom.rs:55:1
   |
55 | / stringy_enum! {
56 | |     pub enum Tag (parse error DomError::ParseTag) {
57 | |         A = "a",
58 | |         Aside = "aside",
...  |
94 | |     }
95 | | }
   | |_- in this macro invocation
   |
   = note: `-W elided-lifetimes-in-paths` implied by `-W rust-2018-idioms`
   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: hidden lifetime parameters in types are deprecated
   --> src/macros.rs:19:35
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
    |                                     ^^^^^^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
    | 
   ::: src/dom.rs:106:1
    |
106 | / stringy_enum! {
107 | |     pub enum AttributeName (parse error DomError::ParseAttributeName) {
108 | |         Align = "align",
109 | |         Alt = "alt",
...   |
133 | |     }
134 | | }
    | |_- in this macro invocation
    |
    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: hidden lifetime parameters in types are deprecated
   --> src/dom.rs:249:34
    |
249 |             Node::Text(text) => <Replaced as Display>::fmt(&Replaced(text), f),
    |                                  ^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/dom.rs:247:27
    |
247 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/dom.rs:256:27
    |
256 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/dom.rs:351:27
    |
351 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:664:27
    |
664 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:750:27
    |
750 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:766:27
    |
766 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:798:27
    |
798 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:828:27
    |
828 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:843:27
    |
843 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
 --> src/peekable_ext.rs:4:45
  |
4 |     fn until<P>(&mut self, predicate: P) -> Until<I, P>
  |                                             ^^^^^^^^^^^ help: indicate the anonymous lifetime: `Until<'_, I, P>`

warning: hidden lifetime parameters in types are deprecated
  --> src/peekable_ext.rs:10:45
   |
10 |     fn until<P>(&mut self, predicate: P) -> Until<I, P>
   |                                             ^^^^^^^^^^^ help: indicate the anonymous lifetime: `Until<'_, I, P>`

warning: hidden lifetime parameters in types are deprecated
  --> src/macros.rs:19:35
   |
19 |               fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
   |                                     ^^^^^^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
   | 
  ::: src/tree.rs:22:1
   |
22 | / stringy_enum! {
23 | |     pub enum SectionKind (parse error TreeError::ParseSectionKind) {
24 | |         Preface = "preface",
25 | |         Chapter = "chapter",
...  |
28 | |     }
29 | | }
   | |_- in this macro invocation
   |
   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: hidden lifetime parameters in types are deprecated
   --> src/macros.rs:19:35
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
    |                                     ^^^^^^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
    | 
   ::: src/tree.rs:131:1
    |
131 | / stringy_enum! {
132 | |     pub enum Language (parse error TreeError::ParseLanguage) {
133 | |         Console = "console",
134 | |         Cpp = "cpp",
...   |
144 | |     }
145 | | }
    | |_- in this macro invocation
    |
    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: hidden lifetime parameters in types are deprecated
   --> src/macros.rs:19:35
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
    |                                     ^^^^^^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
    | 
   ::: src/tree.rs:177:1
    |
177 | / stringy_enum! {
178 | |     pub enum FlagKind (parse error TreeError::ParseFlagKind) {
179 | |         Tip = "tip",
180 | |         Note = "note",
181 | |         Warning = "warning",
182 | |     }
183 | | }
    | |_- in this macro invocation
    |
    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: `extern crate` is not idiomatic in the new edition
 --> src/lib.rs:3:1
  |
3 | extern crate failure;
  | ^^^^^^^^^^^^^^^^^^^^^ help: convert it to a `use`
  |
  = note: `-W unused-extern-crates` implied by `-W rust-2018-idioms`

warning: unused extern crate
 --> src/lib.rs:6:1
  |
6 | extern crate html5ever;
  | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove it

warning: unused extern crate
 --> src/lib.rs:9:1
  |
9 | extern crate string_cache;
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it

warning: outlives requirements can be inferred
   --> src/markdown.rs:764:22
    |
764 | struct Pandoc<'a, T: 'a + ?Sized>(&'a T);
    |                      ^^^^^ help: remove this bound
    |
    = note: `-W explicit-outlives-requirements` implied by `-W rust-2018-idioms`

warning: 21 warnings emitted

warning: hidden lifetime parameters in types are deprecated
  --> src/macros.rs:19:35
   |
19 |               fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
   |                                     ^^^^^^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
   | 
  ::: src/dom.rs:55:1
   |
55 | / stringy_enum! {
56 | |     pub enum Tag (parse error DomError::ParseTag) {
57 | |         A = "a",
58 | |         Aside = "aside",
...  |
94 | |     }
95 | | }
   | |_- in this macro invocation
   |
   = note: `-W elided-lifetimes-in-paths` implied by `-W rust-2018-idioms`
   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: hidden lifetime parameters in types are deprecated
   --> src/macros.rs:19:35
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
    |                                     ^^^^^^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
    | 
   ::: src/dom.rs:106:1
    |
106 | / stringy_enum! {
107 | |     pub enum AttributeName (parse error DomError::ParseAttributeName) {
108 | |         Align = "align",
109 | |         Alt = "alt",
...   |
133 | |     }
134 | | }
    | |_- in this macro invocation
    |
    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: hidden lifetime parameters in types are deprecated
   --> src/dom.rs:249:34
    |
249 |             Node::Text(text) => <Replaced as Display>::fmt(&Replaced(text), f),
    |                                  ^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/dom.rs:247:27
    |
247 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/dom.rs:256:27
    |
256 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/dom.rs:351:27
    |
351 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:664:27
    |
664 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:750:27
    |
750 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:766:27
    |
766 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:798:27
    |
798 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:828:27
    |
828 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
   --> src/markdown.rs:843:27
    |
843 |     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    |                           ^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`

warning: hidden lifetime parameters in types are deprecated
 --> src/peekable_ext.rs:4:45
  |
4 |     fn until<P>(&mut self, predicate: P) -> Until<I, P>
  |                                             ^^^^^^^^^^^ help: indicate the anonymous lifetime: `Until<'_, I, P>`

warning: hidden lifetime parameters in types are deprecated
  --> src/peekable_ext.rs:10:45
   |
10 |     fn until<P>(&mut self, predicate: P) -> Until<I, P>
   |                                             ^^^^^^^^^^^ help: indicate the anonymous lifetime: `Until<'_, I, P>`

warning: hidden lifetime parameters in types are deprecated
  --> src/macros.rs:19:35
   |
19 |               fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
   |                                     ^^^^^^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
   | 
  ::: src/tree.rs:22:1
   |
22 | / stringy_enum! {
23 | |     pub enum SectionKind (parse error TreeError::ParseSectionKind) {
24 | |         Preface = "preface",
25 | |         Chapter = "chapter",
...  |
28 | |     }
29 | | }
   | |_- in this macro invocation
   |
   = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: hidden lifetime parameters in types are deprecated
   --> src/macros.rs:19:35
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
    |                                     ^^^^^^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
    | 
   ::: src/tree.rs:131:1
    |
131 | / stringy_enum! {
132 | |     pub enum Language (parse error TreeError::ParseLanguage) {
133 | |         Console = "console",
134 | |         Cpp = "cpp",
...   |
144 | |     }
145 | | }
    | |_- in this macro invocation
    |
    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: hidden lifetime parameters in types are deprecated
   --> src/macros.rs:19:35
    |
19  |               fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
    |                                     ^^^^^^^^^^^^^^^^^^^- help: indicate the anonymous lifetime: `<'_>`
    | 
   ::: src/tree.rs:177:1
    |
177 | / stringy_enum! {
178 | |     pub enum FlagKind (parse error TreeError::ParseFlagKind) {
179 | |         Tip = "tip",
180 | |         Note = "note",
181 | |         Warning = "warning",
182 | |     }
183 | | }
    | |_- in this macro invocation
    |
    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

warning: `extern crate` is not idiomatic in the new edition
 --> src/lib.rs:3:1
  |
3 | extern crate failure;
  | ^^^^^^^^^^^^^^^^^^^^^ help: convert it to a `use`
  |
  = note: `-W unused-extern-crates` implied by `-W rust-2018-idioms`

warning: unused extern crate
 --> src/lib.rs:6:1
  |
6 | extern crate html5ever;
  | ^^^^^^^^^^^^^^^^^^^^^^^ help: remove it

warning: unused extern crate
 --> src/lib.rs:9:1
  |
9 | extern crate string_cache;
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it

warning: outlives requirements can be inferred
   --> src/markdown.rs:764:22
    |
764 | struct Pandoc<'a, T: 'a + ?Sized>(&'a T);
    |                      ^^^^^ help: remove this bound
    |
    = note: `-W explicit-outlives-requirements` implied by `-W rust-2018-idioms`

warning: 21 warnings emitted

    Finished dev [unoptimized + debuginfo] target(s) in 22.53s