[INFO] cloning repository https://github.com/boh5/robinson-toy-browser-engine-for-learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/boh5/robinson-toy-browser-engine-for-learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboh5%2Frobinson-toy-browser-engine-for-learning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboh5%2Frobinson-toy-browser-engine-for-learning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 843ca9613f1f5a1d5290a0e1af92cd46fb350d24
[INFO] checking boh5/robinson-toy-browser-engine-for-learning-rust against try#c86ec274072509d26d0ee52682a0c94ed012ed89 for pr-153027
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fboh5%2Frobinson-toy-browser-engine-for-learning-rust" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/boh5/robinson-toy-browser-engine-for-learning-rust
[INFO] finished tweaking git repo https://github.com/boh5/robinson-toy-browser-engine-for-learning-rust
[INFO] tweaked toml for git repo https://github.com/boh5/robinson-toy-browser-engine-for-learning-rust written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/boh5/robinson-toy-browser-engine-for-learning-rust on toolchain c86ec274072509d26d0ee52682a0c94ed012ed89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/boh5/robinson-toy-browser-engine-for-learning-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded png v0.8.0
[INFO] [stderr]   Downloaded image v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0488f9a9273d5628526759240673c1854ab9ae5688cef3883ef8fc631cc47a4e
[INFO] running `Command { std: "docker" "start" "-a" "0488f9a9273d5628526759240673c1854ab9ae5688cef3883ef8fc631cc47a4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0488f9a9273d5628526759240673c1854ab9ae5688cef3883ef8fc631cc47a4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0488f9a9273d5628526759240673c1854ab9ae5688cef3883ef8fc631cc47a4e", kill_on_drop: false }`
[INFO] [stdout] 0488f9a9273d5628526759240673c1854ab9ae5688cef3883ef8fc631cc47a4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3649b728ff5011ec114290886b27e5bcfe80ff18780878cb7887ef355786ae4
[INFO] running `Command { std: "docker" "start" "-a" "b3649b728ff5011ec114290886b27e5bcfe80ff18780878cb7887ef355786ae4", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking unicode-width v0.1.13
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking png v0.8.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking image v0.14.0
[INFO] [stderr]     Checking robinson-toy-browser-engine-for-learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/layout.rs:320:9
[INFO] [stdout]     |
[INFO] [stdout] 320 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `append_child` are never used
[INFO] [stdout]   --> src/dom.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Node {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 14 |     pub fn new(node_type: NodeType) -> Node {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub fn append_child(&mut self, node: Node) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/dom.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Text(String),
[INFO] [stdout]    |     ---- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 27 -     Text(String),
[INFO] [stdout] 27 +     Text(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/dom.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | impl ElementData {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] 37 |     pub fn new(tag_name: &str, attributes: AttrMap) -> ElementData {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `node` is never read
[INFO] [stdout]   --> src/style.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct StyledNode<'a> {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 11 |     pub node: &'a Node,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/dom.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 |     Text(String),
[INFO] [stdout]    |     ---- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 27 -     Text(String),
[INFO] [stdout] 27 +     Text(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `node` is never read
[INFO] [stdout]   --> src/style.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct StyledNode<'a> {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] 11 |     pub node: &'a Node,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.84s
[INFO] running `Command { std: "docker" "inspect" "b3649b728ff5011ec114290886b27e5bcfe80ff18780878cb7887ef355786ae4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3649b728ff5011ec114290886b27e5bcfe80ff18780878cb7887ef355786ae4", kill_on_drop: false }`
[INFO] [stdout] b3649b728ff5011ec114290886b27e5bcfe80ff18780878cb7887ef355786ae4