[INFO] fetching crate be-tree 0.1.0...
[INFO] testing be-tree-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate be-tree 0.1.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate be-tree 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 be-tree 0.1.0
[INFO] finished tweaking crates.io crate be-tree 0.1.0
[INFO] tweaked toml for crates.io crate be-tree 0.1.0 written to /workspace/builds/worker-14/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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] d8620ed2e324f57ee0c369a7c59c9e55c5ab15174d7e40b0216e41a16bd10e9a
[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" "d8620ed2e324f57ee0c369a7c59c9e55c5ab15174d7e40b0216e41a16bd10e9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8620ed2e324f57ee0c369a7c59c9e55c5ab15174d7e40b0216e41a16bd10e9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8620ed2e324f57ee0c369a7c59c9e55c5ab15174d7e40b0216e41a16bd10e9a", kill_on_drop: false }`
[INFO] [stdout] d8620ed2e324f57ee0c369a7c59c9e55c5ab15174d7e40b0216e41a16bd10e9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 771b6bd5cfad2d07e72f3eb3f3b794976689dd621b804557d58f161d8ea24fdf
[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" "771b6bd5cfad2d07e72f3eb3f3b794976689dd621b804557d58f161d8ea24fdf", kill_on_drop: false }`
[INFO] [stderr]    Compiling be-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "771b6bd5cfad2d07e72f3eb3f3b794976689dd621b804557d58f161d8ea24fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "771b6bd5cfad2d07e72f3eb3f3b794976689dd621b804557d58f161d8ea24fdf", kill_on_drop: false }`
[INFO] [stdout] 771b6bd5cfad2d07e72f3eb3f3b794976689dd621b804557d58f161d8ea24fdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 5eca200d45202d553a209e481d4e704a5e3770e769a8c80fb7f02d54cefc84fc
[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" "5eca200d45202d553a209e481d4e704a5e3770e769a8c80fb7f02d54cefc84fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling be-tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "5eca200d45202d553a209e481d4e704a5e3770e769a8c80fb7f02d54cefc84fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eca200d45202d553a209e481d4e704a5e3770e769a8c80fb7f02d54cefc84fc", kill_on_drop: false }`
[INFO] [stdout] 5eca200d45202d553a209e481d4e704a5e3770e769a8c80fb7f02d54cefc84fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d101a3dd229fe81a1912f8eb4a8b7300daeef0fae21c0ffba28fa33ef8d4e7a4
[INFO] running `Command { std: "docker" "start" "-a" "d101a3dd229fe81a1912f8eb4a8b7300daeef0fae21c0ffba28fa33ef8d4e7a4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 9 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/be_tree-c4fc5f931e530276
[INFO] [stdout] test tests::can_construct ... ok
[INFO] [stdout] test tests::can_clear ... ok
[INFO] [stdout] test tests::can_delete_existing ... ok
[INFO] [stdout] test tests::can_delete_nothing ... ok
[INFO] [stdout] test tests::can_delete_only_existing ... ok
[INFO] [stdout] test tests::can_split ... ok
[INFO] [stdout] test tests::can_insert_two ... ok
[INFO] [stdout] test tests::insert_replaces_existing ... ok
[INFO] [stdout] test tests::can_insert_single ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests be-tree
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d101a3dd229fe81a1912f8eb4a8b7300daeef0fae21c0ffba28fa33ef8d4e7a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d101a3dd229fe81a1912f8eb4a8b7300daeef0fae21c0ffba28fa33ef8d4e7a4", kill_on_drop: false }`
[INFO] [stdout] d101a3dd229fe81a1912f8eb4a8b7300daeef0fae21c0ffba28fa33ef8d4e7a4