[INFO] fetching crate advancedresearch-tree_mem_sort 0.2.0...
[INFO] testing advancedresearch-tree_mem_sort-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate advancedresearch-tree_mem_sort 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate advancedresearch-tree_mem_sort 0.2.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate advancedresearch-tree_mem_sort 0.2.0
[INFO] finished tweaking crates.io crate advancedresearch-tree_mem_sort 0.2.0
[INFO] tweaked toml for crates.io crate advancedresearch-tree_mem_sort 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate advancedresearch-tree_mem_sort 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "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] eb1c0ee9e1794367bc924a72f53b428f4a70423337db216cec1372fc9ff8c907
[INFO] running `Command { std: "docker" "start" "-a" "eb1c0ee9e1794367bc924a72f53b428f4a70423337db216cec1372fc9ff8c907", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb1c0ee9e1794367bc924a72f53b428f4a70423337db216cec1372fc9ff8c907", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb1c0ee9e1794367bc924a72f53b428f4a70423337db216cec1372fc9ff8c907", kill_on_drop: false }`
[INFO] [stdout] eb1c0ee9e1794367bc924a72f53b428f4a70423337db216cec1372fc9ff8c907
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "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] 58360718c53b45ce62a340e59caa28a841403c35930c8b18f51a6f9977ed5fda
[INFO] running `Command { std: "docker" "start" "-a" "58360718c53b45ce62a340e59caa28a841403c35930c8b18f51a6f9977ed5fda", kill_on_drop: false }`
[INFO] [stderr]    Compiling advancedresearch-tree_mem_sort v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "58360718c53b45ce62a340e59caa28a841403c35930c8b18f51a6f9977ed5fda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58360718c53b45ce62a340e59caa28a841403c35930c8b18f51a6f9977ed5fda", kill_on_drop: false }`
[INFO] [stdout] 58360718c53b45ce62a340e59caa28a841403c35930c8b18f51a6f9977ed5fda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--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] 257583912d7bb2d19b18f1bed1f032b0d8cbc83f7b9bac9eb9555f5746fb8fbc
[INFO] running `Command { std: "docker" "start" "-a" "257583912d7bb2d19b18f1bed1f032b0d8cbc83f7b9bac9eb9555f5746fb8fbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling advancedresearch-tree_mem_sort v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "257583912d7bb2d19b18f1bed1f032b0d8cbc83f7b9bac9eb9555f5746fb8fbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "257583912d7bb2d19b18f1bed1f032b0d8cbc83f7b9bac9eb9555f5746fb8fbc", kill_on_drop: false }`
[INFO] [stdout] 257583912d7bb2d19b18f1bed1f032b0d8cbc83f7b9bac9eb9555f5746fb8fbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+beta-2021-09-08" "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] 0eed5f6edfc9b9d7c6f8b0462be96fa406ff2c970ea354733ab4ffb4de2119d5
[INFO] running `Command { std: "docker" "start" "-a" "0eed5f6edfc9b9d7c6f8b0462be96fa406ff2c970ea354733ab4ffb4de2119d5", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tree_mem_sort-1123b6bd330495b8)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::empty ... ok
[INFO] [stdout] test tests::four ... ok
[INFO] [stdout] test tests::three ... ok
[INFO] [stdout] test tests::two ... ok
[INFO] [stdout] test tests::one ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tree_mem_sort
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 65) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.41s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0eed5f6edfc9b9d7c6f8b0462be96fa406ff2c970ea354733ab4ffb4de2119d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0eed5f6edfc9b9d7c6f8b0462be96fa406ff2c970ea354733ab4ffb4de2119d5", kill_on_drop: false }`
[INFO] [stdout] 0eed5f6edfc9b9d7c6f8b0462be96fa406ff2c970ea354733ab4ffb4de2119d5