[INFO] fetching crate avltree 0.1.0...
[INFO] testing avltree-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate avltree 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate avltree 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate avltree 0.1.0
[INFO] finished tweaking crates.io crate avltree 0.1.0
[INFO] tweaked toml for crates.io crate avltree 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 465ed3312e1f7d84ce87590a4d45150a48124a01fec34b4e092fb5991a055f99
[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" "465ed3312e1f7d84ce87590a4d45150a48124a01fec34b4e092fb5991a055f99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "465ed3312e1f7d84ce87590a4d45150a48124a01fec34b4e092fb5991a055f99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "465ed3312e1f7d84ce87590a4d45150a48124a01fec34b4e092fb5991a055f99", kill_on_drop: false }`
[INFO] [stdout] 465ed3312e1f7d84ce87590a4d45150a48124a01fec34b4e092fb5991a055f99
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 047a611a65fda330f9b9191b1c5b327e752daf50276c548ad973103673546f88
[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" "047a611a65fda330f9b9191b1c5b327e752daf50276c548ad973103673546f88", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling avltree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.95s
[INFO] running `Command { std: "docker" "inspect" "047a611a65fda330f9b9191b1c5b327e752daf50276c548ad973103673546f88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "047a611a65fda330f9b9191b1c5b327e752daf50276c548ad973103673546f88", kill_on_drop: false }`
[INFO] [stdout] 047a611a65fda330f9b9191b1c5b327e752daf50276c548ad973103673546f88
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 119554e8dc8125f38ea1fc5fa82043e8980e95d655f2f5e540b8444c8e123e81
[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" "119554e8dc8125f38ea1fc5fa82043e8980e95d655f2f5e540b8444c8e123e81", kill_on_drop: false }`
[INFO] [stderr]    Compiling avltree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.83s
[INFO] running `Command { std: "docker" "inspect" "119554e8dc8125f38ea1fc5fa82043e8980e95d655f2f5e540b8444c8e123e81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "119554e8dc8125f38ea1fc5fa82043e8980e95d655f2f5e540b8444c8e123e81", kill_on_drop: false }`
[INFO] [stdout] 119554e8dc8125f38ea1fc5fa82043e8980e95d655f2f5e540b8444c8e123e81
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4a268809a5355b6652d5afc23f9741ae0e28941d385246893ab06982d4559f17
[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" "4a268809a5355b6652d5afc23f9741ae0e28941d385246893ab06982d4559f17", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/avltree-0abdc8e096e72fb0
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::insert_node ... ok
[INFO] [stdout] test tests::insert_left_rot ... ok
[INFO] [stdout] test tests::insert_right_rot ... ok
[INFO] [stdout] test tests::empty_tree ... ok
[INFO] [stdout] test tests::right_left_rot ... ok
[INFO] [stdout] test tests::left_right_rot ... ok
[INFO] [stderr]    Doc-tests avltree
[INFO] [stdout] test tests::random_values ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - SearchTree<T>::new (line 29) ... ok
[INFO] [stdout] test src/lib.rs - SearchTree<T>::insert (line 76) ... ok
[INFO] [stdout] test src/lib.rs - SearchTree<T>::is_empty (line 44) ... ok
[INFO] [stdout] test src/lib.rs - SearchTree<T>::iter (line 319) ... ok
[INFO] [stdout] test src/lib.rs - SearchTree<T>::contains (line 58) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4a268809a5355b6652d5afc23f9741ae0e28941d385246893ab06982d4559f17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a268809a5355b6652d5afc23f9741ae0e28941d385246893ab06982d4559f17", kill_on_drop: false }`
[INFO] [stdout] 4a268809a5355b6652d5afc23f9741ae0e28941d385246893ab06982d4559f17