[INFO] cloning repository https://github.com/lucalewin/horizon-browser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lucalewin/horizon-browser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucalewin%2Fhorizon-browser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucalewin%2Fhorizon-browser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f5a0570ec8569d8dc2175137c30c709a7e69375a
[INFO] checking lucalewin/horizon-browser against master#75530e9f72a1990ed2305e16fd51d02f47048f12 for pr-138676
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flucalewin%2Fhorizon-browser" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lucalewin/horizon-browser on toolchain 75530e9f72a1990ed2305e16fd51d02f47048f12
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lucalewin/horizon-browser
[INFO] finished tweaking git repo https://github.com/lucalewin/horizon-browser
[INFO] tweaked toml for git repo https://github.com/lucalewin/horizon-browser written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lucalewin/horizon-browser 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" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 097f160b0a2332746801edf971aa8a950bb0b1140fba1164d27cb8e0cc78adde
[INFO] running `Command { std: "docker" "start" "-a" "097f160b0a2332746801edf971aa8a950bb0b1140fba1164d27cb8e0cc78adde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "097f160b0a2332746801edf971aa8a950bb0b1140fba1164d27cb8e0cc78adde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "097f160b0a2332746801edf971aa8a950bb0b1140fba1164d27cb8e0cc78adde", kill_on_drop: false }`
[INFO] [stdout] 097f160b0a2332746801edf971aa8a950bb0b1140fba1164d27cb8e0cc78adde
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f56b6ab91d15c83dc841e540517b6fd81e07fdeb6dfd1d515a9ac0b2d7da917
[INFO] running `Command { std: "docker" "start" "-a" "8f56b6ab91d15c83dc841e540517b6fd81e07fdeb6dfd1d515a9ac0b2d7da917", kill_on_drop: false }`
[INFO] [stderr]     Checking horizon-browser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]  --> src/html/parser/mod.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn parse(tokens: Vec<Token>) -> Document {
[INFO] [stdout]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tokens`
[INFO] [stdout]  --> src/html/parser/mod.rs:3:14
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn parse(tokens: Vec<Token>) -> Document {
[INFO] [stdout]   |              ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Token` is never constructed
[INFO] [stdout]  --> src/html/tokenizer/token.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Token {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TokenKind` is never used
[INFO] [stdout]  --> src/html/tokenizer/token.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub enum TokenKind {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Attribute` is never constructed
[INFO] [stdout]   --> src/html/tokenizer/token.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Attribute {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Token` is never constructed
[INFO] [stdout]  --> src/html/tokenizer/token.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Token {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]  --> src/html/parser/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn parse(tokens: Vec<Token>) -> Document {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TokenKind` is never used
[INFO] [stdout]  --> src/html/tokenizer/token.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub enum TokenKind {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Attribute` is never constructed
[INFO] [stdout]   --> src/html/tokenizer/token.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Attribute {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse` is never used
[INFO] [stdout]  --> src/html/parser/mod.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn parse(tokens: Vec<Token>) -> Document {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] running `Command { std: "docker" "inspect" "8f56b6ab91d15c83dc841e540517b6fd81e07fdeb6dfd1d515a9ac0b2d7da917", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f56b6ab91d15c83dc841e540517b6fd81e07fdeb6dfd1d515a9ac0b2d7da917", kill_on_drop: false }`
[INFO] [stdout] 8f56b6ab91d15c83dc841e540517b6fd81e07fdeb6dfd1d515a9ac0b2d7da917