[INFO] cloning repository https://github.com/aksh93/rust-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aksh93/rust-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faksh93%2Frust-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faksh93%2Frust-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 880614df6311af83bad0efe933e15afd495748ce
[INFO] checking aksh93/rust-engine against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faksh93%2Frust-engine" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aksh93/rust-engine on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aksh93/rust-engine
[INFO] finished tweaking git repo https://github.com/aksh93/rust-engine
[INFO] tweaked toml for git repo https://github.com/aksh93/rust-engine written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/aksh93/rust-engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e06147acc59c8b54fcef5d4ff2c4d0dbaf4ade2912fc015499d7d7fd7a8da782
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e06147acc59c8b54fcef5d4ff2c4d0dbaf4ade2912fc015499d7d7fd7a8da782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e06147acc59c8b54fcef5d4ff2c4d0dbaf4ade2912fc015499d7d7fd7a8da782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e06147acc59c8b54fcef5d4ff2c4d0dbaf4ade2912fc015499d7d7fd7a8da782", kill_on_drop: false }`
[INFO] [stdout] e06147acc59c8b54fcef5d4ff2c4d0dbaf4ade2912fc015499d7d7fd7a8da782
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1f6442cb628c8f9a0634d87816708d1256eb2758343eb902b9460197ce2dc33
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c1f6442cb628c8f9a0634d87816708d1256eb2758343eb902b9460197ce2dc33", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `children`
[INFO] [stdout]  --> src/html.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     children: Vec<Node>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `node_type`
[INFO] [stdout]  --> src/html.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     node_type: NodeType,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tag_name`
[INFO] [stdout]   --> src/html.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     tag_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `attributes`
[INFO] [stdout]   --> src/html.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     attributes: AttrMap,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rules`
[INFO] [stdout]  --> src/css.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     rules: Vec<Rule>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `selectors`
[INFO] [stdout]  --> src/css.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     selectors: Vec<Selector>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `declarations`
[INFO] [stdout]  --> src/css.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     declarations: Vec<Declaration>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/css.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> src/css.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     value: Value,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `r`
[INFO] [stdout]   --> src/css.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     r: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `g`
[INFO] [stdout]   --> src/css.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     g: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]   --> src/css.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     b: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]   --> src/css.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     a: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `children`
[INFO] [stdout]  --> src/html.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     children: Vec<Node>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `node_type`
[INFO] [stdout]  --> src/html.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     node_type: NodeType,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `tag_name`
[INFO] [stdout]   --> src/html.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     tag_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `attributes`
[INFO] [stdout]   --> src/html.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     attributes: AttrMap,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `rules`
[INFO] [stdout]  --> src/css.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     rules: Vec<Rule>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `selectors`
[INFO] [stdout]  --> src/css.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     selectors: Vec<Selector>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `declarations`
[INFO] [stdout]  --> src/css.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     declarations: Vec<Declaration>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `name`
[INFO] [stdout]   --> src/css.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> src/css.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     value: Value,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `r`
[INFO] [stdout]   --> src/css.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     r: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `g`
[INFO] [stdout]   --> src/css.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 58 |     g: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]   --> src/css.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     b: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]   --> src/css.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 60 |     a: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `Command { std: "docker" "inspect" "c1f6442cb628c8f9a0634d87816708d1256eb2758343eb902b9460197ce2dc33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1f6442cb628c8f9a0634d87816708d1256eb2758343eb902b9460197ce2dc33", kill_on_drop: false }`
[INFO] [stdout] c1f6442cb628c8f9a0634d87816708d1256eb2758343eb902b9460197ce2dc33