[INFO] cloning repository https://github.com/nickx720/iteratorsrust_playground [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nickx720/iteratorsrust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fiteratorsrust_playground", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fiteratorsrust_playground'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4179adbd86cceb16e0a571dd7a847d70b9fca449 [INFO] testing nickx720/iteratorsrust_playground against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnickx720%2Fiteratorsrust_playground" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/nickx720/iteratorsrust_playground on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/nickx720/iteratorsrust_playground [INFO] finished tweaking git repo https://github.com/nickx720/iteratorsrust_playground [INFO] tweaked toml for git repo https://github.com/nickx720/iteratorsrust_playground written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/nickx720/iteratorsrust_playground already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 7c89f7e33cda1d267542a3e29484ad9d0d617e5316f7054b572c20d68486ed50 [INFO] running `Command { std: "docker" "start" "-a" "7c89f7e33cda1d267542a3e29484ad9d0d617e5316f7054b572c20d68486ed50", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7c89f7e33cda1d267542a3e29484ad9d0d617e5316f7054b572c20d68486ed50", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7c89f7e33cda1d267542a3e29484ad9d0d617e5316f7054b572c20d68486ed50", kill_on_drop: false }` [INFO] [stdout] 7c89f7e33cda1d267542a3e29484ad9d0d617e5316f7054b572c20d68486ed50 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 0fb4fd8939fe45f2bcb8e20e9136c04f467a3e53e52936fad621dda8745bd5d7 [INFO] running `Command { std: "docker" "start" "-a" "0fb4fd8939fe45f2bcb8e20e9136c04f467a3e53e52936fad621dda8745bd5d7", kill_on_drop: false }` [INFO] [stderr] Compiling iterators v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variant is never constructed: `Leaf` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | Leaf(Item), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Children` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | Children(Vec>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `traverse` [INFO] [stdout] --> src/main.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 9 | fn traverse(&self, f: impl Fn(&It)) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.52s [INFO] running `Command { std: "docker" "inspect" "0fb4fd8939fe45f2bcb8e20e9136c04f467a3e53e52936fad621dda8745bd5d7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0fb4fd8939fe45f2bcb8e20e9136c04f467a3e53e52936fad621dda8745bd5d7", kill_on_drop: false }` [INFO] [stdout] 0fb4fd8939fe45f2bcb8e20e9136c04f467a3e53e52936fad621dda8745bd5d7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8f276f8a1513ddafb567a9c5a2f9168206c0509dc3a3f4631b98788ff4b608d3 [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" "8f276f8a1513ddafb567a9c5a2f9168206c0509dc3a3f4631b98788ff4b608d3", kill_on_drop: false }` [INFO] [stderr] Compiling iterators v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:249:9 [INFO] [stdout] | [INFO] [stdout] 249 | let mut tree = Node::Children(vec![ [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `traverse` [INFO] [stdout] --> src/main.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 9 | fn traverse(&self, f: impl Fn(&It)) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.89s [INFO] running `Command { std: "docker" "inspect" "8f276f8a1513ddafb567a9c5a2f9168206c0509dc3a3f4631b98788ff4b608d3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8f276f8a1513ddafb567a9c5a2f9168206c0509dc3a3f4631b98788ff4b608d3", kill_on_drop: false }` [INFO] [stdout] 8f276f8a1513ddafb567a9c5a2f9168206c0509dc3a3f4631b98788ff4b608d3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 1f60bd015151e86c1915c1b8a94cadee6aaeacef871486f35844dc72874354eb [INFO] running `Command { std: "docker" "start" "-a" "1f60bd015151e86c1915c1b8a94cadee6aaeacef871486f35844dc72874354eb", kill_on_drop: false }` [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:249:9 [INFO] [stderr] | [INFO] [stderr] 249 | let mut tree = Node::Children(vec![ [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `traverse` [INFO] [stderr] --> src/main.rs:9:8 [INFO] [stderr] | [INFO] [stderr] 9 | fn traverse(&self, f: impl Fn(&It)) { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/iterators-eafca7f1577421c1) [INFO] [stdout] [INFO] [stdout] running 6 tests [INFO] [stdout] test test_borrowing_for_node_loop ... ok [INFO] [stdout] test test_borrowing_iter ... ok [INFO] [stdout] test test_borrowing_node_iter ... ok [INFO] [stdout] test test_borrowing_for_loop ... ok [INFO] [stdout] test test_borrowing_mut_for_node_loop ... ok [INFO] [stdout] test test_borrowing_mut_node_iter ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "1f60bd015151e86c1915c1b8a94cadee6aaeacef871486f35844dc72874354eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1f60bd015151e86c1915c1b8a94cadee6aaeacef871486f35844dc72874354eb", kill_on_drop: false }` [INFO] [stdout] 1f60bd015151e86c1915c1b8a94cadee6aaeacef871486f35844dc72874354eb