Nov 28 14:44:45.743 INFO checking AlanFoster/toy_layout_engine against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 14:44:45.745 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-2/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"`
Nov 28 14:44:46.201 INFO [stdout] 882107dcec93824b3e98d456d6912a03cee48561b328e933f154a0fd57d9ef6a
Nov 28 14:44:46.203 INFO running `"docker" "start" "-a" "882107dcec93824b3e98d456d6912a03cee48561b328e933f154a0fd57d9ef6a"`
Nov 28 14:44:47.704 INFO [stderr] usermod: no changes
Nov 28 14:44:47.805 INFO [stderr]     Checking toy_layout_engine v0.1.0 (/source)
Nov 28 14:44:48.689 INFO [stderr] warning: method is never used: `specificity`
Nov 28 14:44:48.690 INFO [stderr]   --> src/css.rs:22:5
Nov 28 14:44:48.690 INFO [stderr]    |
Nov 28 14:44:48.690 INFO [stderr] 22 |     pub fn specificity(&self) -> Specificity {
Nov 28 14:44:48.691 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.691 INFO [stderr]    |
Nov 28 14:44:48.691 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 14:44:48.691 INFO [stderr] 
Nov 28 14:44:48.692 INFO [stderr] warning: variant is never constructed: `Simple`
Nov 28 14:44:48.692 INFO [stderr]   --> src/css.rs:34:5
Nov 28 14:44:48.692 INFO [stderr]    |
Nov 28 14:44:48.692 INFO [stderr] 34 |     Simple(SimpleSelector),
Nov 28 14:44:48.693 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.693 INFO [stderr] 
Nov 28 14:44:48.693 INFO [stderr] warning: variant is never constructed: `Keyword`
Nov 28 14:44:48.693 INFO [stderr]   --> src/css.rs:52:5
Nov 28 14:44:48.694 INFO [stderr]    |
Nov 28 14:44:48.694 INFO [stderr] 52 |     Keyword(String),
Nov 28 14:44:48.694 INFO [stderr]    |     ^^^^^^^^^^^^^^^
Nov 28 14:44:48.694 INFO [stderr] 
Nov 28 14:44:48.695 INFO [stderr] warning: variant is never constructed: `Length`
Nov 28 14:44:48.695 INFO [stderr]   --> src/css.rs:53:5
Nov 28 14:44:48.695 INFO [stderr]    |
Nov 28 14:44:48.695 INFO [stderr] 53 |     Length(f32, Unit),
Nov 28 14:44:48.696 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.700 INFO [stderr] 
Nov 28 14:44:48.700 INFO [stderr] warning: variant is never constructed: `ColorValue`
Nov 28 14:44:48.701 INFO [stderr]   --> src/css.rs:54:5
Nov 28 14:44:48.701 INFO [stderr]    |
Nov 28 14:44:48.701 INFO [stderr] 54 |     ColorValue(Color),
Nov 28 14:44:48.701 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.701 INFO [stderr] 
Nov 28 14:44:48.702 INFO [stderr] warning: variant is never constructed: `Px`
Nov 28 14:44:48.702 INFO [stderr]   --> src/css.rs:59:5
Nov 28 14:44:48.702 INFO [stderr]    |
Nov 28 14:44:48.703 INFO [stderr] 59 |     Px,
Nov 28 14:44:48.703 INFO [stderr]    |     ^^
Nov 28 14:44:48.703 INFO [stderr] 
Nov 28 14:44:48.703 INFO [stderr] warning: function is never used: `parse_css`
Nov 28 14:44:48.704 INFO [stderr]   --> src/css.rs:70:1
Nov 28 14:44:48.704 INFO [stderr]    |
Nov 28 14:44:48.704 INFO [stderr] 70 | fn parse_css(input: String) -> Stylesheet {
Nov 28 14:44:48.704 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.705 INFO [stderr] 
Nov 28 14:44:48.705 INFO [stderr] warning: struct is never constructed: `Parser`
Nov 28 14:44:48.705 INFO [stderr]   --> src/css.rs:78:1
Nov 28 14:44:48.705 INFO [stderr]    |
Nov 28 14:44:48.706 INFO [stderr] 78 | struct Parser {
Nov 28 14:44:48.706 INFO [stderr]    | ^^^^^^^^^^^^^
Nov 28 14:44:48.706 INFO [stderr] 
Nov 28 14:44:48.706 INFO [stderr] warning: function is never used: `is_valid_identifier_char`
Nov 28 14:44:48.707 INFO [stderr]   --> src/css.rs:83:1
Nov 28 14:44:48.707 INFO [stderr]    |
Nov 28 14:44:48.707 INFO [stderr] 83 | fn is_valid_identifier_char(c: char) -> bool {
Nov 28 14:44:48.707 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.708 INFO [stderr] 
Nov 28 14:44:48.708 INFO [stderr] warning: method is never used: `parse_rules`
Nov 28 14:44:48.708 INFO [stderr]   --> src/css.rs:91:5
Nov 28 14:44:48.708 INFO [stderr]    |
Nov 28 14:44:48.709 INFO [stderr] 91 |     fn parse_rules(&mut self) -> Vec<Rule> {
Nov 28 14:44:48.709 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.709 INFO [stderr] 
Nov 28 14:44:48.710 INFO [stderr] warning: method is never used: `parse_rule`
Nov 28 14:44:48.710 INFO [stderr]    --> src/css.rs:105:5
Nov 28 14:44:48.710 INFO [stderr]     |
Nov 28 14:44:48.710 INFO [stderr] 105 |     fn parse_rule(&mut self) -> Rule {
Nov 28 14:44:48.711 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.711 INFO [stderr] 
Nov 28 14:44:48.711 INFO [stderr] warning: method is never used: `parse_selectors`
Nov 28 14:44:48.711 INFO [stderr]    --> src/css.rs:112:5
Nov 28 14:44:48.712 INFO [stderr]     |
Nov 28 14:44:48.716 INFO [stderr] 112 |     fn parse_selectors(&mut self) -> Vec<Selector> {
Nov 28 14:44:48.716 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.717 INFO [stderr] 
Nov 28 14:44:48.717 INFO [stderr] warning: method is never used: `parse_declarations`
Nov 28 14:44:48.717 INFO [stderr]    --> src/css.rs:130:5
Nov 28 14:44:48.717 INFO [stderr]     |
Nov 28 14:44:48.718 INFO [stderr] 130 |     fn parse_declarations(&mut self) -> Vec<Declaration> {
Nov 28 14:44:48.718 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.718 INFO [stderr] 
Nov 28 14:44:48.718 INFO [stderr] warning: method is never used: `parse_simple_selector`
Nov 28 14:44:48.719 INFO [stderr]    --> src/css.rs:147:5
Nov 28 14:44:48.719 INFO [stderr]     |
Nov 28 14:44:48.719 INFO [stderr] 147 |     fn parse_simple_selector(&mut self) -> Selector {
Nov 28 14:44:48.719 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.720 INFO [stderr] 
Nov 28 14:44:48.720 INFO [stderr] warning: method is never used: `parse_declaration`
Nov 28 14:44:48.720 INFO [stderr]    --> src/css.rs:182:5
Nov 28 14:44:48.720 INFO [stderr]     |
Nov 28 14:44:48.721 INFO [stderr] 182 |     fn parse_declaration(&mut self) -> Declaration {
Nov 28 14:44:48.721 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.721 INFO [stderr] 
Nov 28 14:44:48.721 INFO [stderr] warning: method is never used: `parse_value`
Nov 28 14:44:48.722 INFO [stderr]    --> src/css.rs:196:5
Nov 28 14:44:48.722 INFO [stderr]     |
Nov 28 14:44:48.722 INFO [stderr] 196 |     fn parse_value(&mut self) -> Value {
Nov 28 14:44:48.722 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.723 INFO [stderr] 
Nov 28 14:44:48.723 INFO [stderr] warning: method is never used: `parse_color`
Nov 28 14:44:48.723 INFO [stderr]    --> src/css.rs:204:5
Nov 28 14:44:48.723 INFO [stderr]     |
Nov 28 14:44:48.724 INFO [stderr] 204 |     fn parse_color(&mut self) -> Value {
Nov 28 14:44:48.724 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.724 INFO [stderr] 
Nov 28 14:44:48.724 INFO [stderr] warning: method is never used: `parse_hex_pair`
Nov 28 14:44:48.725 INFO [stderr]    --> src/css.rs:216:5
Nov 28 14:44:48.725 INFO [stderr]     |
Nov 28 14:44:48.725 INFO [stderr] 216 |     fn parse_hex_pair(&mut self) -> u8 {
Nov 28 14:44:48.725 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.726 INFO [stderr] 
Nov 28 14:44:48.726 INFO [stderr] warning: method is never used: `parse_length`
Nov 28 14:44:48.726 INFO [stderr]    --> src/css.rs:222:5
Nov 28 14:44:48.726 INFO [stderr]     |
Nov 28 14:44:48.727 INFO [stderr] 222 |     fn parse_length(&mut self) -> Value {
Nov 28 14:44:48.732 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.732 INFO [stderr] 
Nov 28 14:44:48.733 INFO [stderr] warning: method is never used: `parse_float`
Nov 28 14:44:48.733 INFO [stderr]    --> src/css.rs:229:5
Nov 28 14:44:48.733 INFO [stderr]     |
Nov 28 14:44:48.733 INFO [stderr] 229 |     fn parse_float(&mut self) -> f32 {
Nov 28 14:44:48.734 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.734 INFO [stderr] 
Nov 28 14:44:48.734 INFO [stderr] warning: method is never used: `parse_unit`
Nov 28 14:44:48.734 INFO [stderr]    --> src/css.rs:238:5
Nov 28 14:44:48.735 INFO [stderr]     |
Nov 28 14:44:48.735 INFO [stderr] 238 |     fn parse_unit(&mut self) -> Unit {
Nov 28 14:44:48.735 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.735 INFO [stderr] 
Nov 28 14:44:48.736 INFO [stderr] warning: method is never used: `parse_keyword`
Nov 28 14:44:48.736 INFO [stderr]    --> src/css.rs:245:5
Nov 28 14:44:48.736 INFO [stderr]     |
Nov 28 14:44:48.736 INFO [stderr] 245 |     fn parse_keyword(&mut self) -> Value {
Nov 28 14:44:48.737 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.737 INFO [stderr] 
Nov 28 14:44:48.737 INFO [stderr] warning: method is never used: `parse_declaration_name`
Nov 28 14:44:48.738 INFO [stderr]    --> src/css.rs:254:5
Nov 28 14:44:48.738 INFO [stderr]     |
Nov 28 14:44:48.738 INFO [stderr] 254 |     fn parse_declaration_name(&mut self) -> String {
Nov 28 14:44:48.739 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.739 INFO [stderr] 
Nov 28 14:44:48.739 INFO [stderr] warning: method is never used: `parse_identifier`
Nov 28 14:44:48.740 INFO [stderr]    --> src/css.rs:261:5
Nov 28 14:44:48.740 INFO [stderr]     |
Nov 28 14:44:48.740 INFO [stderr] 261 |     fn parse_identifier(&mut self) -> String {
Nov 28 14:44:48.740 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.741 INFO [stderr] 
Nov 28 14:44:48.741 INFO [stderr] warning: method is never used: `next_char`
Nov 28 14:44:48.741 INFO [stderr]    --> src/css.rs:265:5
Nov 28 14:44:48.741 INFO [stderr]     |
Nov 28 14:44:48.742 INFO [stderr] 265 |     fn next_char(&mut self) -> char {
Nov 28 14:44:48.742 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.742 INFO [stderr] 
Nov 28 14:44:48.742 INFO [stderr] warning: method is never used: `eof`
Nov 28 14:44:48.743 INFO [stderr]    --> src/css.rs:269:5
Nov 28 14:44:48.743 INFO [stderr]     |
Nov 28 14:44:48.743 INFO [stderr] 269 |     fn eof(&mut self) -> bool {
Nov 28 14:44:48.743 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.744 INFO [stderr] 
Nov 28 14:44:48.744 INFO [stderr] warning: method is never used: `consume_char`
Nov 28 14:44:48.744 INFO [stderr]    --> src/css.rs:273:5
Nov 28 14:44:48.745 INFO [stderr]     |
Nov 28 14:44:48.745 INFO [stderr] 273 |     fn consume_char(&mut self) -> char {
Nov 28 14:44:48.745 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.745 INFO [stderr] 
Nov 28 14:44:48.746 INFO [stderr] warning: method is never used: `consume_while`
Nov 28 14:44:48.746 INFO [stderr]    --> src/css.rs:282:5
Nov 28 14:44:48.746 INFO [stderr]     |
Nov 28 14:44:48.746 INFO [stderr] 282 | /     fn consume_while<F>(&mut self, f: F) -> String
Nov 28 14:44:48.747 INFO [stderr] 283 | |         where F: Fn(char) -> bool {
Nov 28 14:44:48.747 INFO [stderr] 284 | |         let mut result = String::new();
Nov 28 14:44:48.747 INFO [stderr] 285 | |         while !self.eof() && f(self.next_char()) {
Nov 28 14:44:48.747 INFO [stderr] ...   |
Nov 28 14:44:48.748 INFO [stderr] 289 | |         result
Nov 28 14:44:48.748 INFO [stderr] 290 | |     }
Nov 28 14:44:48.748 INFO [stderr]     | |_____^
Nov 28 14:44:48.749 INFO [stderr] 
Nov 28 14:44:48.749 INFO [stderr] warning: method is never used: `consume_whitespace`
Nov 28 14:44:48.749 INFO [stderr]    --> src/css.rs:292:5
Nov 28 14:44:48.749 INFO [stderr]     |
Nov 28 14:44:48.750 INFO [stderr] 292 |     fn consume_whitespace(&mut self) -> String {
Nov 28 14:44:48.750 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.750 INFO [stderr] 
Nov 28 14:44:48.750 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 14:44:48.751 INFO [stderr]   --> src/dom.rs:17:13
Nov 28 14:44:48.751 INFO [stderr]    |
Nov 28 14:44:48.751 INFO [stderr] 17 |             write!(formatter, "{}", c);
Nov 28 14:44:48.751 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:48.752 INFO [stderr]    |
Nov 28 14:44:48.752 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 28 14:44:48.752 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 14:44:48.752 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)
Nov 28 14:44:48.753 INFO [stderr] 
Nov 28 14:44:49.116 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 28 14:44:49.116 INFO [stderr]   --> src/dom.rs:17:13
Nov 28 14:44:49.116 INFO [stderr]    |
Nov 28 14:44:49.116 INFO [stderr] 17 |             write!(formatter, "{}", c);
Nov 28 14:44:49.116 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 14:44:49.116 INFO [stderr]    |
Nov 28 14:44:49.116 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 28 14:44:49.116 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 28 14:44:49.116 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)
Nov 28 14:44:49.116 INFO [stderr] 
Nov 28 14:44:49.154 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
Nov 28 14:44:49.157 INFO [stderr] su: No module specific data is present
Nov 28 14:44:50.283 INFO running `"docker" "inspect" "882107dcec93824b3e98d456d6912a03cee48561b328e933f154a0fd57d9ef6a"`
Nov 28 14:44:50.731 INFO running `"docker" "rm" "-f" "882107dcec93824b3e98d456d6912a03cee48561b328e933f154a0fd57d9ef6a"`
Nov 28 14:44:50.996 INFO [stdout] 882107dcec93824b3e98d456d6912a03cee48561b328e933f154a0fd57d9ef6a