[INFO] cloning repository https://github.com/mflinn92/rusty-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mflinn92/rusty-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmflinn92%2Frusty-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmflinn92%2Frusty-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd41b6e8317a29ef8a1bd3cf78c01a2170d568ed
[INFO] checking mflinn92/rusty-engine against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmflinn92%2Frusty-engine" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mflinn92/rusty-engine on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mflinn92/rusty-engine
[INFO] finished tweaking git repo https://github.com/mflinn92/rusty-engine
[INFO] tweaked toml for git repo https://github.com/mflinn92/rusty-engine written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/mflinn92/rusty-engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6225ca0fedf27b67cc60402f73772cabd950ae36cd8c9f264369bec91b6178c
[INFO] running `Command { std: "docker" "start" "-a" "d6225ca0fedf27b67cc60402f73772cabd950ae36cd8c9f264369bec91b6178c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6225ca0fedf27b67cc60402f73772cabd950ae36cd8c9f264369bec91b6178c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6225ca0fedf27b67cc60402f73772cabd950ae36cd8c9f264369bec91b6178c", kill_on_drop: false }`
[INFO] [stdout] d6225ca0fedf27b67cc60402f73772cabd950ae36cd8c9f264369bec91b6178c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ea1db3fcded60944c61a8dadbb18e4a366eb31114311d4bfcc714531ab4bdcf
[INFO] running `Command { std: "docker" "start" "-a" "8ea1db3fcded60944c61a8dadbb18e4a366eb31114311d4bfcc714531ab4bdcf", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Checking rusty-engine v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stdout] warning: struct is never constructed: `Stylesheet`
[INFO] [stdout]  --> src/parser/css.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Stylesheet {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Rule`
[INFO] [stdout]  --> src/parser/css.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Rule {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Declaration`
[INFO] [stdout]   --> src/parser/css.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Declaration {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Value`
[INFO] [stdout]   --> src/parser/css.rs:59:6
[INFO] [stdout]    |
[INFO] [stdout] 59 | enum Value {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Unit`
[INFO] [stdout]   --> src/parser/css.rs:66:6
[INFO] [stdout]    |
[INFO] [stdout] 66 | enum Unit {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Color`
[INFO] [stdout]   --> src/parser/css.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct Color {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `starts_with`
[INFO] [stdout]   --> src/parser/css.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn starts_with(&self, s: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]        Fixed src/dom.rs (1 fix)
[INFO] [stdout] warning: associated function is never used: `children`
[INFO] [stdout]   --> src/dom.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn children(&self) -> &Vec<Node> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `node_type`
[INFO] [stdout]   --> src/dom.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn node_type(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_tag`
[INFO] [stdout]   --> src/dom.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn get_tag(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_text`
[INFO] [stdout]   --> src/dom.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn get_text(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Stylesheet`
[INFO] [stdout]  --> src/parser/css.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Stylesheet {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Rule`
[INFO] [stdout]  --> src/parser/css.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Rule {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Simple`
[INFO] [stdout]   --> src/parser/css.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Simple(SimpleSelector),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Specificity`
[INFO] [stdout]   --> src/parser/css.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub type Specificity = (usize, usize, usize);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `specificity`
[INFO] [stdout]   --> src/parser/css.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn specificity(&self) -> Specificity {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/parser/css.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Declaration`
[INFO] [stdout]   --> src/parser/css.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Declaration {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Value`
[INFO] [stdout]   --> src/parser/css.rs:59:6
[INFO] [stdout]    |
[INFO] [stdout] 59 | enum Value {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Unit`
[INFO] [stdout]   --> src/parser/css.rs:66:6
[INFO] [stdout]    |
[INFO] [stdout] 66 | enum Unit {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Color`
[INFO] [stdout]   --> src/parser/css.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct Color {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Css`
[INFO] [stdout]   --> src/parser/css.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct Css {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_char`
[INFO] [stdout]   --> src/parser/css.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn next_char(&self) -> char {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `starts_with`
[INFO] [stdout]   --> src/parser/css.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn starts_with(&self, s: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eof`
[INFO] [stdout]   --> src/parser/css.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn eof(&self) -> bool {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `consume_char`
[INFO] [stdout]   --> src/parser/css.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn consume_char(&mut self) -> char {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `consume_while`
[INFO] [stdout]    --> src/parser/css.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn consume_while<F>(&mut self, test: F) -> String
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `consume_whitespace`
[INFO] [stdout]    --> src/parser/css.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn consume_whitespace(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_simple_selector`
[INFO] [stdout]    --> src/parser/css.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn parse_simple_selector(&mut self) -> SimpleSelector {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_identifier`
[INFO] [stdout]    --> src/parser/css.rs:144:8
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn parse_identifier(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_selectors`
[INFO] [stdout]    --> src/parser/css.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 156 |     fn parse_selectors(&mut self) -> Vec<Selector> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `valid_identifier_char`
[INFO] [stdout]    --> src/parser/css.rs:175:4
[INFO] [stdout]     |
[INFO] [stdout] 175 | fn valid_identifier_char(c: char) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking rusty-engine v0.1.0 (/tmp/fixit)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `NodeType`
[INFO] [stdout]   --> src/dom.rs:83:16
[INFO] [stdout]    |
[INFO] [stdout] 83 |         if let NodeType::Text(got) = node.node_type {
[INFO] [stdout]    |                ^^^^^^^^ use of undeclared type `NodeType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `NodeType`
[INFO] [stdout]    --> src/dom.rs:102:16
[INFO] [stdout]     |
[INFO] [stdout] 102 |         if let NodeType::Element(elem) = node.node_type {
[INFO] [stdout]     |                ^^^^^^^^ use of undeclared type `NodeType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `NodeType`
[INFO] [stdout]    --> src/dom.rs:131:13
[INFO] [stdout]     |
[INFO] [stdout] 131 |             NodeType::Text(text) => {
[INFO] [stdout]     |             ^^^^^^^^ use of undeclared type `NodeType`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Node`
[INFO] [stdout]   --> src/dom.rs:77:20
[INFO] [stdout]    |
[INFO] [stdout] 77 |         let node = Node::new_text(data.clone());
[INFO] [stdout]    |                    ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 75 |     use crate::dom::Node;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `AttrMap`
[INFO] [stdout]   --> src/dom.rs:90:25
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let mut attrs = AttrMap::new();
[INFO] [stdout]    |                         ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]    |
[INFO] [stdout] 75 |     use crate::dom::AttrMap;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Node`
[INFO] [stdout]   --> src/dom.rs:96:20
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let node = Node::new_element(tag_name, attrs.clone(), Vec::new());
[INFO] [stdout]    |                    ^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 75 |     use crate::dom::Node;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Node`
[INFO] [stdout]    --> src/dom.rs:117:25
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let text_node = Node::new_text(data.clone());
[INFO] [stdout]     |                         ^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 75  |     use crate::dom::Node;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `AttrMap`
[INFO] [stdout]    --> src/dom.rs:120:25
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let mut attrs = AttrMap::new();
[INFO] [stdout]     |                         ^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this type alias
[INFO] [stdout]     |
[INFO] [stdout] 75  |     use crate::dom::AttrMap;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Node`
[INFO] [stdout]    --> src/dom.rs:125:20
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let node = Node::new_element(tag_name, attrs.clone(), vec![text_node]);
[INFO] [stdout]     |                    ^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]     |
[INFO] [stdout] 75  |     use crate::dom::Node;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `children`
[INFO] [stdout]   --> src/dom.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn children(&self) -> &Vec<Node> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `node_type`
[INFO] [stdout]   --> src/dom.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn node_type(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_tag`
[INFO] [stdout]   --> src/dom.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn get_tag(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_text`
[INFO] [stdout]   --> src/dom.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn get_text(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Stylesheet`
[INFO] [stdout]  --> src/parser/css.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Stylesheet {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Rule`
[INFO] [stdout]  --> src/parser/css.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Rule {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Simple`
[INFO] [stdout]   --> src/parser/css.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Simple(SimpleSelector),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Specificity`
[INFO] [stdout]   --> src/parser/css.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub type Specificity = (usize, usize, usize);
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `specificity`
[INFO] [stdout]   --> src/parser/css.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn specificity(&self) -> Specificity {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/parser/css.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Declaration`
[INFO] [stdout]   --> src/parser/css.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | struct Declaration {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Value`
[INFO] [stdout]   --> src/parser/css.rs:59:6
[INFO] [stdout]    |
[INFO] [stdout] 59 | enum Value {
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Unit`
[INFO] [stdout]   --> src/parser/css.rs:66:6
[INFO] [stdout]    |
[INFO] [stdout] 66 | enum Unit {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Color`
[INFO] [stdout]   --> src/parser/css.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct Color {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Css`
[INFO] [stdout]   --> src/parser/css.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct Css {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_char`
[INFO] [stdout]   --> src/parser/css.rs:84:8
[INFO] [stdout]    |
[INFO] [stdout] 84 |     fn next_char(&self) -> char {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `starts_with`
[INFO] [stdout]   --> src/parser/css.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn starts_with(&self, s: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eof`
[INFO] [stdout]   --> src/parser/css.rs:92:8
[INFO] [stdout]    |
[INFO] [stdout] 92 |     fn eof(&self) -> bool {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `consume_char`
[INFO] [stdout]   --> src/parser/css.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn consume_char(&mut self) -> char {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `consume_while`
[INFO] [stdout]    --> src/parser/css.rs:104:8
[INFO] [stdout]     |
[INFO] [stdout] 104 |     fn consume_while<F>(&mut self, test: F) -> String
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `consume_whitespace`
[INFO] [stdout]    --> src/parser/css.rs:115:8
[INFO] [stdout]     |
[INFO] [stdout] 115 |     fn consume_whitespace(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_simple_selector`
[INFO] [stdout]    --> src/parser/css.rs:119:8
[INFO] [stdout]     |
[INFO] [stdout] 119 |     fn parse_simple_selector(&mut self) -> SimpleSelector {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_identifier`
[INFO] [stdout]    --> src/parser/css.rs:144:8
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn parse_identifier(&mut self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_selectors`
[INFO] [stdout]    --> src/parser/css.rs:156:8
[INFO] [stdout]     |
[INFO] [stdout] 156 |     fn parse_selectors(&mut self) -> Vec<Selector> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `valid_identifier_char`
[INFO] [stdout]    --> src/parser/css.rs:175:4
[INFO] [stdout]     |
[INFO] [stdout] 175 | fn valid_identifier_char(c: char) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-engine` due to 10 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 25 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stderr] error: failed to check after updating to 2021
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `cargo check --frozen --all --all-targets --message-format=json` (exit status: 101)
[INFO] running `Command { std: "docker" "inspect" "8ea1db3fcded60944c61a8dadbb18e4a366eb31114311d4bfcc714531ab4bdcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ea1db3fcded60944c61a8dadbb18e4a366eb31114311d4bfcc714531ab4bdcf", kill_on_drop: false }`
[INFO] [stdout] 8ea1db3fcded60944c61a8dadbb18e4a366eb31114311d4bfcc714531ab4bdcf