[INFO] updating cached repository https://github.com/AlanFoster/toy_layout_engine
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7dc21663aa6a8f036aed2be5803bb4b91c70ea4b
[INFO] checking AlanFoster/toy_layout_engine against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlanFoster%2Ftoy_layout_engine" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AlanFoster/toy_layout_engine on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/AlanFoster/toy_layout_engine
[INFO] finished tweaking git repo https://github.com/AlanFoster/toy_layout_engine
[INFO] tweaked toml for git repo https://github.com/AlanFoster/toy_layout_engine written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/AlanFoster/toy_layout_engine already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 68f35099bc47a6b948796c5895fbe050648db481f84d48aae27ead73f0743782
[INFO] running `"docker" "start" "-a" "68f35099bc47a6b948796c5895fbe050648db481f84d48aae27ead73f0743782"`
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking toy_layout_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/html.rs:56:17
[INFO] [stderr]    |
[INFO] [stderr] 56 |             'a' ... 'z' | 'A' ... 'Z' | '0' ... '9' => true,
[INFO] [stderr]    |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/html.rs:56:31
[INFO] [stderr]    |
[INFO] [stderr] 56 |             'a' ... 'z' | 'A' ... 'Z' | '0' ... '9' => true,
[INFO] [stderr]    |                               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/html.rs:56:45
[INFO] [stderr]    |
[INFO] [stderr] 56 |             'a' ... 'z' | 'A' ... 'Z' | '0' ... '9' => true,
[INFO] [stderr]    |                                             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/css.rs:85:12
[INFO] [stderr]    |
[INFO] [stderr] 85 |         'a'...'z' | 'A'...'Z' | '0'...'9' => true,
[INFO] [stderr]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/css.rs:85:24
[INFO] [stderr]    |
[INFO] [stderr] 85 |         'a'...'z' | 'A'...'Z' | '0'...'9' => true,
[INFO] [stderr]    |                        ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/css.rs:85:36
[INFO] [stderr]    |
[INFO] [stderr] 85 |         'a'...'z' | 'A'...'Z' | '0'...'9' => true,
[INFO] [stderr]    |                                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:198:16
[INFO] [stderr]     |
[INFO] [stderr] 198 |             '0'...'9' => self.parse_length(),
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:231:17
[INFO] [stderr]     |
[INFO] [stderr] 231 |             '0' ... '9' | '.' => true,
[INFO] [stderr]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:247:16
[INFO] [stderr]     |
[INFO] [stderr] 247 |             'a'...'z' | 'A'...'Z' | '-' => true,
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:247:28
[INFO] [stderr]     |
[INFO] [stderr] 247 |             'a'...'z' | 'A'...'Z' | '-' => true,
[INFO] [stderr]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:256:16
[INFO] [stderr]     |
[INFO] [stderr] 256 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' => true,
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:256:28
[INFO] [stderr]     |
[INFO] [stderr] 256 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' => true,
[INFO] [stderr]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:256:40
[INFO] [stderr]     |
[INFO] [stderr] 256 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' => true,
[INFO] [stderr]     |                                        ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/html.rs:56:17
[INFO] [stderr]    |
[INFO] [stderr] 56 |             'a' ... 'z' | 'A' ... 'Z' | '0' ... '9' => true,
[INFO] [stderr]    |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/html.rs:56:31
[INFO] [stderr]    |
[INFO] [stderr] 56 |             'a' ... 'z' | 'A' ... 'Z' | '0' ... '9' => true,
[INFO] [stderr]    |                               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/html.rs:56:45
[INFO] [stderr]    |
[INFO] [stderr] 56 |             'a' ... 'z' | 'A' ... 'Z' | '0' ... '9' => true,
[INFO] [stderr]    |                                             ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/css.rs:85:12
[INFO] [stderr]    |
[INFO] [stderr] 85 |         'a'...'z' | 'A'...'Z' | '0'...'9' => true,
[INFO] [stderr]    |            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/css.rs:85:24
[INFO] [stderr]    |
[INFO] [stderr] 85 |         'a'...'z' | 'A'...'Z' | '0'...'9' => true,
[INFO] [stderr]    |                        ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/css.rs:85:36
[INFO] [stderr]    |
[INFO] [stderr] 85 |         'a'...'z' | 'A'...'Z' | '0'...'9' => true,
[INFO] [stderr]    |                                    ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:198:16
[INFO] [stderr]     |
[INFO] [stderr] 198 |             '0'...'9' => self.parse_length(),
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:231:17
[INFO] [stderr]     |
[INFO] [stderr] 231 |             '0' ... '9' | '.' => true,
[INFO] [stderr]     |                 ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:247:16
[INFO] [stderr]     |
[INFO] [stderr] 247 |             'a'...'z' | 'A'...'Z' | '-' => true,
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:247:28
[INFO] [stderr]     |
[INFO] [stderr] 247 |             'a'...'z' | 'A'...'Z' | '-' => true,
[INFO] [stderr]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:256:16
[INFO] [stderr]     |
[INFO] [stderr] 256 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' => true,
[INFO] [stderr]     |                ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:256:28
[INFO] [stderr]     |
[INFO] [stderr] 256 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' => true,
[INFO] [stderr]     |                            ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/css.rs:256:40
[INFO] [stderr]     |
[INFO] [stderr] 256 |             'a'...'z' | 'A'...'Z' | '0'...'9' | '-' => true,
[INFO] [stderr]     |                                        ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dom.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |             write!(formatter, "{}", c);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `specificity`
[INFO] [stderr]   --> src/css.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn specificity(&self) -> Specificity {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Simple`
[INFO] [stderr]   --> src/css.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Simple(SimpleSelector),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Keyword`
[INFO] [stderr]   --> src/css.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     Keyword(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Length`
[INFO] [stderr]   --> src/css.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     Length(f32, Unit),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ColorValue`
[INFO] [stderr]   --> src/css.rs:54:5
[INFO] [stderr]    |
[INFO] [stderr] 54 |     ColorValue(Color),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Px`
[INFO] [stderr]   --> src/css.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     Px,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_css`
[INFO] [stderr]   --> src/css.rs:70:4
[INFO] [stderr]    |
[INFO] [stderr] 70 | fn parse_css(input: String) -> Stylesheet {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Parser`
[INFO] [stderr]   --> src/css.rs:78:8
[INFO] [stderr]    |
[INFO] [stderr] 78 | struct Parser {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_valid_identifier_char`
[INFO] [stderr]   --> src/css.rs:83:4
[INFO] [stderr]    |
[INFO] [stderr] 83 | fn is_valid_identifier_char(c: char) -> bool {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_rules`
[INFO] [stderr]   --> src/css.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn parse_rules(&mut self) -> Vec<Rule> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_rule`
[INFO] [stderr]    --> src/css.rs:105:5
[INFO] [stderr]     |
[INFO] [stderr] 105 |     fn parse_rule(&mut self) -> Rule {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_selectors`
[INFO] [stderr]    --> src/css.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     fn parse_selectors(&mut self) -> Vec<Selector> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_declarations`
[INFO] [stderr]    --> src/css.rs:130:5
[INFO] [stderr]     |
[INFO] [stderr] 130 |     fn parse_declarations(&mut self) -> Vec<Declaration> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_simple_selector`
[INFO] [stderr]    --> src/css.rs:147:5
[INFO] [stderr]     |
[INFO] [stderr] 147 |     fn parse_simple_selector(&mut self) -> Selector {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_declaration`
[INFO] [stderr]    --> src/css.rs:182:5
[INFO] [stderr]     |
[INFO] [stderr] 182 |     fn parse_declaration(&mut self) -> Declaration {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_value`
[INFO] [stderr]    --> src/css.rs:196:5
[INFO] [stderr]     |
[INFO] [stderr] 196 |     fn parse_value(&mut self) -> Value {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_color`
[INFO] [stderr]    --> src/css.rs:204:5
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn parse_color(&mut self) -> Value {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_hex_pair`
[INFO] [stderr]    --> src/css.rs:216:5
[INFO] [stderr]     |
[INFO] [stderr] 216 |     fn parse_hex_pair(&mut self) -> u8 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_length`
[INFO] [stderr]    --> src/css.rs:222:5
[INFO] [stderr]     |
[INFO] [stderr] 222 |     fn parse_length(&mut self) -> Value {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_float`
[INFO] [stderr]    --> src/css.rs:229:5
[INFO] [stderr]     |
[INFO] [stderr] 229 |     fn parse_float(&mut self) -> f32 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_unit`
[INFO] [stderr]    --> src/css.rs:238:5
[INFO] [stderr]     |
[INFO] [stderr] 238 |     fn parse_unit(&mut self) -> Unit {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_keyword`
[INFO] [stderr]    --> src/css.rs:245:5
[INFO] [stderr]     |
[INFO] [stderr] 245 |     fn parse_keyword(&mut self) -> Value {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_declaration_name`
[INFO] [stderr]    --> src/css.rs:254:5
[INFO] [stderr]     |
[INFO] [stderr] 254 |     fn parse_declaration_name(&mut self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_identifier`
[INFO] [stderr]    --> src/css.rs:261:5
[INFO] [stderr]     |
[INFO] [stderr] 261 |     fn parse_identifier(&mut self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `next_char`
[INFO] [stderr]    --> src/css.rs:265:5
[INFO] [stderr]     |
[INFO] [stderr] 265 |     fn next_char(&mut self) -> char {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eof`
[INFO] [stderr]    --> src/css.rs:269:5
[INFO] [stderr]     |
[INFO] [stderr] 269 |     fn eof(&mut self) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `consume_char`
[INFO] [stderr]    --> src/css.rs:273:5
[INFO] [stderr]     |
[INFO] [stderr] 273 |     fn consume_char(&mut self) -> char {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `consume_while`
[INFO] [stderr]    --> src/css.rs:282:5
[INFO] [stderr]     |
[INFO] [stderr] 282 | /     fn consume_while<F>(&mut self, f: F) -> String
[INFO] [stderr] 283 | |         where F: Fn(char) -> bool {
[INFO] [stderr] 284 | |         let mut result = String::new();
[INFO] [stderr] 285 | |         while !self.eof() && f(self.next_char()) {
[INFO] [stderr] ...   |
[INFO] [stderr] 289 | |         result
[INFO] [stderr] 290 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `consume_whitespace`
[INFO] [stderr]    --> src/css.rs:292:5
[INFO] [stderr]     |
[INFO] [stderr] 292 |     fn consume_whitespace(&mut self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/dom.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |             write!(formatter, "{}", c);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 43 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `"docker" "inspect" "68f35099bc47a6b948796c5895fbe050648db481f84d48aae27ead73f0743782"`
[INFO] running `"docker" "rm" "-f" "68f35099bc47a6b948796c5895fbe050648db481f84d48aae27ead73f0743782"`
[INFO] [stdout] 68f35099bc47a6b948796c5895fbe050648db481f84d48aae27ead73f0743782