Dec 05 03:36:29.124 INFO checking AlanFoster/toy_layout_engine against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 03:36:29.124 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-3/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 03:36:29.582 INFO [stdout] 451c9eb02c0067bc37a04dfd82bc1b6fd73de9dcc66671e45a9b469bc37deeb9
Dec 05 03:36:29.589 INFO running `"docker" "start" "-a" "451c9eb02c0067bc37a04dfd82bc1b6fd73de9dcc66671e45a9b469bc37deeb9"`
Dec 05 03:36:31.806 INFO [stderr] usermod: no changes
Dec 05 03:36:31.895 INFO [stderr]     Checking toy_layout_engine v0.1.0 (/source)
Dec 05 03:36:33.343 INFO [stderr] warning: method is never used: `specificity`
Dec 05 03:36:33.343 INFO [stderr]   --> src/css.rs:22:5
Dec 05 03:36:33.343 INFO [stderr]    |
Dec 05 03:36:33.343 INFO [stderr] 22 |     pub fn specificity(&self) -> Specificity {
Dec 05 03:36:33.343 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.343 INFO [stderr]    |
Dec 05 03:36:33.344 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: variant is never constructed: `Simple`
Dec 05 03:36:33.344 INFO [stderr]   --> src/css.rs:34:5
Dec 05 03:36:33.344 INFO [stderr]    |
Dec 05 03:36:33.344 INFO [stderr] 34 |     Simple(SimpleSelector),
Dec 05 03:36:33.344 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: variant is never constructed: `Keyword`
Dec 05 03:36:33.344 INFO [stderr]   --> src/css.rs:52:5
Dec 05 03:36:33.344 INFO [stderr]    |
Dec 05 03:36:33.344 INFO [stderr] 52 |     Keyword(String),
Dec 05 03:36:33.344 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: variant is never constructed: `Length`
Dec 05 03:36:33.344 INFO [stderr]   --> src/css.rs:53:5
Dec 05 03:36:33.344 INFO [stderr]    |
Dec 05 03:36:33.344 INFO [stderr] 53 |     Length(f32, Unit),
Dec 05 03:36:33.344 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: variant is never constructed: `ColorValue`
Dec 05 03:36:33.344 INFO [stderr]   --> src/css.rs:54:5
Dec 05 03:36:33.344 INFO [stderr]    |
Dec 05 03:36:33.344 INFO [stderr] 54 |     ColorValue(Color),
Dec 05 03:36:33.344 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: variant is never constructed: `Px`
Dec 05 03:36:33.344 INFO [stderr]   --> src/css.rs:59:5
Dec 05 03:36:33.344 INFO [stderr]    |
Dec 05 03:36:33.344 INFO [stderr] 59 |     Px,
Dec 05 03:36:33.344 INFO [stderr]    |     ^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: function is never used: `parse_css`
Dec 05 03:36:33.344 INFO [stderr]   --> src/css.rs:70:1
Dec 05 03:36:33.344 INFO [stderr]    |
Dec 05 03:36:33.344 INFO [stderr] 70 | fn parse_css(input: String) -> Stylesheet {
Dec 05 03:36:33.344 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: struct is never constructed: `Parser`
Dec 05 03:36:33.344 INFO [stderr]   --> src/css.rs:78:1
Dec 05 03:36:33.344 INFO [stderr]    |
Dec 05 03:36:33.344 INFO [stderr] 78 | struct Parser {
Dec 05 03:36:33.344 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: function is never used: `is_valid_identifier_char`
Dec 05 03:36:33.344 INFO [stderr]   --> src/css.rs:83:1
Dec 05 03:36:33.344 INFO [stderr]    |
Dec 05 03:36:33.344 INFO [stderr] 83 | fn is_valid_identifier_char(c: char) -> bool {
Dec 05 03:36:33.344 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: method is never used: `parse_rules`
Dec 05 03:36:33.344 INFO [stderr]   --> src/css.rs:91:5
Dec 05 03:36:33.344 INFO [stderr]    |
Dec 05 03:36:33.344 INFO [stderr] 91 |     fn parse_rules(&mut self) -> Vec<Rule> {
Dec 05 03:36:33.344 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: method is never used: `parse_rule`
Dec 05 03:36:33.344 INFO [stderr]    --> src/css.rs:105:5
Dec 05 03:36:33.344 INFO [stderr]     |
Dec 05 03:36:33.344 INFO [stderr] 105 |     fn parse_rule(&mut self) -> Rule {
Dec 05 03:36:33.344 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: method is never used: `parse_selectors`
Dec 05 03:36:33.344 INFO [stderr]    --> src/css.rs:112:5
Dec 05 03:36:33.344 INFO [stderr]     |
Dec 05 03:36:33.344 INFO [stderr] 112 |     fn parse_selectors(&mut self) -> Vec<Selector> {
Dec 05 03:36:33.344 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: method is never used: `parse_declarations`
Dec 05 03:36:33.344 INFO [stderr]    --> src/css.rs:130:5
Dec 05 03:36:33.344 INFO [stderr]     |
Dec 05 03:36:33.344 INFO [stderr] 130 |     fn parse_declarations(&mut self) -> Vec<Declaration> {
Dec 05 03:36:33.344 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: method is never used: `parse_simple_selector`
Dec 05 03:36:33.344 INFO [stderr]    --> src/css.rs:147:5
Dec 05 03:36:33.344 INFO [stderr]     |
Dec 05 03:36:33.344 INFO [stderr] 147 |     fn parse_simple_selector(&mut self) -> Selector {
Dec 05 03:36:33.344 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: method is never used: `parse_declaration`
Dec 05 03:36:33.344 INFO [stderr]    --> src/css.rs:182:5
Dec 05 03:36:33.344 INFO [stderr]     |
Dec 05 03:36:33.344 INFO [stderr] 182 |     fn parse_declaration(&mut self) -> Declaration {
Dec 05 03:36:33.344 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.344 INFO [stderr] warning: method is never used: `parse_value`
Dec 05 03:36:33.344 INFO [stderr]    --> src/css.rs:196:5
Dec 05 03:36:33.344 INFO [stderr]     |
Dec 05 03:36:33.344 INFO [stderr] 196 |     fn parse_value(&mut self) -> Value {
Dec 05 03:36:33.344 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.344 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `parse_color`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:204:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 204 |     fn parse_color(&mut self) -> Value {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `parse_hex_pair`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:216:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 216 |     fn parse_hex_pair(&mut self) -> u8 {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `parse_length`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:222:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 222 |     fn parse_length(&mut self) -> Value {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `parse_float`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:229:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 229 |     fn parse_float(&mut self) -> f32 {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `parse_unit`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:238:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 238 |     fn parse_unit(&mut self) -> Unit {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `parse_keyword`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:245:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 245 |     fn parse_keyword(&mut self) -> Value {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `parse_declaration_name`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:254:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 254 |     fn parse_declaration_name(&mut self) -> String {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `parse_identifier`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:261:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 261 |     fn parse_identifier(&mut self) -> String {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `next_char`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:265:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 265 |     fn next_char(&mut self) -> char {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `eof`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:269:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 269 |     fn eof(&mut self) -> bool {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `consume_char`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:273:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 273 |     fn consume_char(&mut self) -> char {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `consume_while`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:282:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 282 | /     fn consume_while<F>(&mut self, f: F) -> String
Dec 05 03:36:33.345 INFO [stderr] 283 | |         where F: Fn(char) -> bool {
Dec 05 03:36:33.345 INFO [stderr] 284 | |         let mut result = String::new();
Dec 05 03:36:33.345 INFO [stderr] 285 | |         while !self.eof() && f(self.next_char()) {
Dec 05 03:36:33.345 INFO [stderr] ...   |
Dec 05 03:36:33.345 INFO [stderr] 289 | |         result
Dec 05 03:36:33.345 INFO [stderr] 290 | |     }
Dec 05 03:36:33.345 INFO [stderr]     | |_____^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: method is never used: `consume_whitespace`
Dec 05 03:36:33.345 INFO [stderr]    --> src/css.rs:292:5
Dec 05 03:36:33.345 INFO [stderr]     |
Dec 05 03:36:33.345 INFO [stderr] 292 |     fn consume_whitespace(&mut self) -> String {
Dec 05 03:36:33.345 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.345 INFO [stderr] 
Dec 05 03:36:33.345 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 03:36:33.345 INFO [stderr]   --> src/dom.rs:17:13
Dec 05 03:36:33.345 INFO [stderr]    |
Dec 05 03:36:33.345 INFO [stderr] 17 |             write!(formatter, "{}", c);
Dec 05 03:36:33.345 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.346 INFO [stderr]    |
Dec 05 03:36:33.346 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 03:36:33.346 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 03:36:33.346 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 05 03:36:33.346 INFO [stderr] 
Dec 05 03:36:33.447 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 03:36:33.447 INFO [stderr]   --> src/dom.rs:17:13
Dec 05 03:36:33.447 INFO [stderr]    |
Dec 05 03:36:33.447 INFO [stderr] 17 |             write!(formatter, "{}", c);
Dec 05 03:36:33.447 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 03:36:33.447 INFO [stderr]    |
Dec 05 03:36:33.447 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 03:36:33.447 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 03:36:33.447 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 05 03:36:33.447 INFO [stderr] 
Dec 05 03:36:33.519 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.68s
Dec 05 03:36:33.535 INFO [stderr] su: No module specific data is present
Dec 05 03:36:34.281 INFO running `"docker" "inspect" "451c9eb02c0067bc37a04dfd82bc1b6fd73de9dcc66671e45a9b469bc37deeb9"`
Dec 05 03:36:34.649 INFO running `"docker" "rm" "-f" "451c9eb02c0067bc37a04dfd82bc1b6fd73de9dcc66671e45a9b469bc37deeb9"`
Dec 05 03:36:34.917 INFO [stdout] 451c9eb02c0067bc37a04dfd82bc1b6fd73de9dcc66671e45a9b469bc37deeb9