[INFO] cloning repository https://github.com/tiny-browserbook/exercise-rendering-tree [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tiny-browserbook/exercise-rendering-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiny-browserbook%2Fexercise-rendering-tree", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiny-browserbook%2Fexercise-rendering-tree'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 52ba96b59bd81422a97a8caa975f4f04a7e8f63e [INFO] checking tiny-browserbook/exercise-rendering-tree against try#38c2997544af84fe301d600d6896397738163002 for pr-154205-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiny-browserbook%2Fexercise-rendering-tree" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/tiny-browserbook/exercise-rendering-tree [INFO] finished tweaking git repo https://github.com/tiny-browserbook/exercise-rendering-tree [INFO] tweaked toml for git repo https://github.com/tiny-browserbook/exercise-rendering-tree written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/tiny-browserbook/exercise-rendering-tree on toolchain 38c2997544af84fe301d600d6896397738163002 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/tiny-browserbook/exercise-rendering-tree 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" "+38c2997544af84fe301d600d6896397738163002" "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 [ERROR] error running command: no output for 300 seconds [INFO] checking tiny-browserbook/exercise-rendering-tree against try#38c2997544af84fe301d600d6896397738163002 for pr-154205-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftiny-browserbook%2Fexercise-rendering-tree" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/tiny-browserbook/exercise-rendering-tree [INFO] finished tweaking git repo https://github.com/tiny-browserbook/exercise-rendering-tree [INFO] tweaked toml for git repo https://github.com/tiny-browserbook/exercise-rendering-tree written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/tiny-browserbook/exercise-rendering-tree on toolchain 38c2997544af84fe301d600d6896397738163002 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/tiny-browserbook/exercise-rendering-tree 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" "+38c2997544af84fe301d600d6896397738163002" "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 combine v4.5.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+38c2997544af84fe301d600d6896397738163002" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 62afbeebe4536968ac4516bda9433663254eca37b7378e4b620820353acf6d23 [INFO] running `Command { std: "docker" "start" "-a" "62afbeebe4536968ac4516bda9433663254eca37b7378e4b620820353acf6d23", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "62afbeebe4536968ac4516bda9433663254eca37b7378e4b620820353acf6d23", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "62afbeebe4536968ac4516bda9433663254eca37b7378e4b620820353acf6d23", kill_on_drop: false }` [INFO] [stdout] 62afbeebe4536968ac4516bda9433663254eca37b7378e4b620820353acf6d23 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+38c2997544af84fe301d600d6896397738163002" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 09c8c9bb4c3a2d33fcb3088ba86ed747b642fadea9bea44b82946a94d39bf92c [INFO] running `Command { std: "docker" "start" "-a" "09c8c9bb4c3a2d33fcb3088ba86ed747b642fadea9bea44b82946a94d39bf92c", kill_on_drop: false }` [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking bytes v1.0.1 [INFO] [stderr] Checking combine v4.5.2 [INFO] [stderr] Checking exercise-rendering-tree v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `NodeType` [INFO] [stdout] --> src/css.rs:9:24 [INFO] [stdout] | [INFO] [stdout] 9 | use crate::dom::{Node, NodeType}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] [FMTARGS] {"crate":"exercise_rendering_tree","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0} [INFO] [stderr] [FMTARGS] {"crate":"exercise_rendering_tree","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0} [INFO] [stdout] warning: unused import: `NodeType` [INFO] [stdout] --> src/css.rs:9:24 [INFO] [stdout] | [INFO] [stdout] 9 | use crate::dom::{Node, NodeType}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] [FMTARGS] {"crate":"exercise_rendering_tree","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0} [INFO] [stderr] [FMTARGS] {"crate":"exercise_rendering_tree","loc":"/rustc/38c2997544af84fe301d600d6896397738163002/library/core/src/macros/mod.rs:880:23","p":2,"ph":0,"wa":0,"pa":0,"a":0,"pos":0,"named":0,"cap":0,"ucap":0,"dup":0,"const":0,"constparam":0,"other_dup":0,"d2":0,"d3":0,"d4p":0,"deduped":0,"remaining":0,"a_old":0,"a_opt":0,"sz_no_dedup":0,"sz_old":0,"sz_opt":0} [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/css.rs:66:27 [INFO] [stdout] | [INFO] [stdout] 66 | pub fn matches(&self, n: &Box) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `node` [INFO] [stdout] --> src/style.rs:28:27 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn to_styled_node<'a>(node: &'a Box, stylesheet: &Stylesheet) -> Option> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_node` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `stylesheet` [INFO] [stdout] --> src/style.rs:28:48 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn to_styled_node<'a>(node: &'a Box, stylesheet: &Stylesheet) -> Option> { [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stylesheet` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `n` [INFO] [stdout] --> src/css.rs:66:27 [INFO] [stdout] | [INFO] [stdout] 66 | pub fn matches(&self, n: &Box) -> bool { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `node` [INFO] [stdout] --> src/style.rs:28:27 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn to_styled_node<'a>(node: &'a Box, stylesheet: &Stylesheet) -> Option> { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_node` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `stylesheet` [INFO] [stdout] --> src/style.rs:28:48 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn to_styled_node<'a>(node: &'a Box, stylesheet: &Stylesheet) -> Option> { [INFO] [stdout] | ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stylesheet` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.89s [INFO] running `Command { std: "docker" "inspect" "09c8c9bb4c3a2d33fcb3088ba86ed747b642fadea9bea44b82946a94d39bf92c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "09c8c9bb4c3a2d33fcb3088ba86ed747b642fadea9bea44b82946a94d39bf92c", kill_on_drop: false }` [INFO] [stdout] 09c8c9bb4c3a2d33fcb3088ba86ed747b642fadea9bea44b82946a94d39bf92c