[INFO] cloning repository https://github.com/hpp-playground/rust-playground [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hpp-playground/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhpp-playground%2Frust-playground", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhpp-playground%2Frust-playground'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 26dc94c579620f6222d2f48f2054150f4cabbb43 [INFO] testing hpp-playground/rust-playground against 1.55.0 for beta-1.56-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhpp-playground%2Frust-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/hpp-playground/rust-playground on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/hpp-playground/rust-playground [INFO] finished tweaking git repo https://github.com/hpp-playground/rust-playground [INFO] tweaked toml for git repo https://github.com/hpp-playground/rust-playground written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/hpp-playground/rust-playground already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "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] aedcf2a6ae24943fee8c7e0800a6860e826dd1162c114b3b5547f8898d76d89c [INFO] running `Command { std: "docker" "start" "-a" "aedcf2a6ae24943fee8c7e0800a6860e826dd1162c114b3b5547f8898d76d89c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "aedcf2a6ae24943fee8c7e0800a6860e826dd1162c114b3b5547f8898d76d89c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aedcf2a6ae24943fee8c7e0800a6860e826dd1162c114b3b5547f8898d76d89c", kill_on_drop: false }` [INFO] [stdout] aedcf2a6ae24943fee8c7e0800a6860e826dd1162c114b3b5547f8898d76d89c [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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a3663fb3cc0bd8a7d9a625fa20ce824bdd6541ff68f2004cb40fda9ea0eae106 [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" "a3663fb3cc0bd8a7d9a625fa20ce824bdd6541ff68f2004cb40fda9ea0eae106", kill_on_drop: false }` [INFO] [stderr] Compiling either v1.6.0 [INFO] [stderr] Compiling itertools v0.9.0 [INFO] [stderr] Compiling rust-playground v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::collections::binary_heap::Iter` [INFO] [stdout] --> src/bin/iterator-learning.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::binary_heap::Iter; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/bin/iterator-learning.rs:79:9 [INFO] [stdout] | [INFO] [stdout] 79 | let b: std::slice::Iter = a.iter(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Leaf` [INFO] [stdout] --> src/bin/iterator-learning.rs:4:5 [INFO] [stdout] | [INFO] [stdout] 4 | 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/bin/iterator-learning.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | Children(Vec>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `traverse` [INFO] [stdout] --> src/bin/iterator-learning.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 9 | fn traverse(&self, f: impl Fn(&It)) { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.83s [INFO] running `Command { std: "docker" "inspect" "a3663fb3cc0bd8a7d9a625fa20ce824bdd6541ff68f2004cb40fda9ea0eae106", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a3663fb3cc0bd8a7d9a625fa20ce824bdd6541ff68f2004cb40fda9ea0eae106", kill_on_drop: false }` [INFO] [stdout] a3663fb3cc0bd8a7d9a625fa20ce824bdd6541ff68f2004cb40fda9ea0eae106 [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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 23cdaacb9158b11f50b43a6fe9443a34dc0fbd5e3a59780628f4484fcc4791ee [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" "23cdaacb9158b11f50b43a6fe9443a34dc0fbd5e3a59780628f4484fcc4791ee", kill_on_drop: false }` [INFO] [stderr] Compiling rust-playground v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::collections::binary_heap::Iter` [INFO] [stdout] --> src/bin/iterator-learning.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::collections::binary_heap::Iter; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/bin/iterator-learning.rs:79:9 [INFO] [stdout] | [INFO] [stdout] 79 | let b: std::slice::Iter = a.iter(); [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `traverse` [INFO] [stdout] --> src/bin/iterator-learning.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: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 3.02s [INFO] running `Command { std: "docker" "inspect" "23cdaacb9158b11f50b43a6fe9443a34dc0fbd5e3a59780628f4484fcc4791ee", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "23cdaacb9158b11f50b43a6fe9443a34dc0fbd5e3a59780628f4484fcc4791ee", kill_on_drop: false }` [INFO] [stdout] 23cdaacb9158b11f50b43a6fe9443a34dc0fbd5e3a59780628f4484fcc4791ee [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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 7f7a7a67fa532da7d6bde828c707096d6fb4b15c462e5ed358b16bce4cc5944e [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" "7f7a7a67fa532da7d6bde828c707096d6fb4b15c462e5ed358b16bce4cc5944e", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `std::collections::binary_heap::Iter` [INFO] [stderr] --> src/bin/iterator-learning.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::collections::binary_heap::Iter; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `b` [INFO] [stderr] --> src/bin/iterator-learning.rs:79:9 [INFO] [stderr] | [INFO] [stderr] 79 | let b: std::slice::Iter = a.iter(); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `traverse` [INFO] [stderr] --> src/bin/iterator-learning.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: `rust-playground` (bin "iterator-learning" test) generated 3 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/ctf_cpawq6-47a6656a86e19c56) [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/iterator_learning-772bf058152cd85a) [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test test_borrowing_for_loop ... ok [INFO] [stdout] test test_borrowing_iterator ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/none_eq-d3f61b01cc7ea2a9) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rust_playground-436e21daba8d5bf7) [INFO] [stdout] [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/string_chunk-f27a44c6890ef31b) [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "7f7a7a67fa532da7d6bde828c707096d6fb4b15c462e5ed358b16bce4cc5944e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f7a7a67fa532da7d6bde828c707096d6fb4b15c462e5ed358b16bce4cc5944e", kill_on_drop: false }` [INFO] [stdout] 7f7a7a67fa532da7d6bde828c707096d6fb4b15c462e5ed358b16bce4cc5944e