[INFO] fetching crate plumtree 0.1.1...
[INFO] testing plumtree-0.1.1 against 1.47.0 for beta-1.48-1
[INFO] extracting crate plumtree 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate plumtree 0.1.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate plumtree 0.1.1
[INFO] finished tweaking crates.io crate plumtree 0.1.1
[INFO] tweaked toml for crates.io crate plumtree 0.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae7cdf414e2967c93a5e61318a43bb79b79ec0ee20ddffaf92559acd633b43aa
[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" "ae7cdf414e2967c93a5e61318a43bb79b79ec0ee20ddffaf92559acd633b43aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae7cdf414e2967c93a5e61318a43bb79b79ec0ee20ddffaf92559acd633b43aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae7cdf414e2967c93a5e61318a43bb79b79ec0ee20ddffaf92559acd633b43aa", kill_on_drop: false }`
[INFO] [stdout] ae7cdf414e2967c93a5e61318a43bb79b79ec0ee20ddffaf92559acd633b43aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e9a341c8fa20ccf269294cbc5cb5f9912b48e7d36dd3bfefaf63e521b378236
[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" "4e9a341c8fa20ccf269294cbc5cb5f9912b48e7d36dd3bfefaf63e521b378236", kill_on_drop: false }`
[INFO] [stderr]    Compiling plumtree v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "4e9a341c8fa20ccf269294cbc5cb5f9912b48e7d36dd3bfefaf63e521b378236", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e9a341c8fa20ccf269294cbc5cb5f9912b48e7d36dd3bfefaf63e521b378236", kill_on_drop: false }`
[INFO] [stdout] 4e9a341c8fa20ccf269294cbc5cb5f9912b48e7d36dd3bfefaf63e521b378236
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "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] 8633c7e56d4409ba477adc770a282475746c3c79959f6a385b692fb8a53137b5
[INFO] running `Command { std: "docker" "start" "-a" "8633c7e56d4409ba477adc770a282475746c3c79959f6a385b692fb8a53137b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling plumtree v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `Command { std: "docker" "inspect" "8633c7e56d4409ba477adc770a282475746c3c79959f6a385b692fb8a53137b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8633c7e56d4409ba477adc770a282475746c3c79959f6a385b692fb8a53137b5", kill_on_drop: false }`
[INFO] [stdout] 8633c7e56d4409ba477adc770a282475746c3c79959f6a385b692fb8a53137b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "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] 09845352d27cd4871c06fe0dc93590b4826fd3ec4b1e8c07255e07842d84482f
[INFO] running `Command { std: "docker" "start" "-a" "09845352d27cd4871c06fe0dc93590b4826fd3ec4b1e8c07255e07842d84482f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/plumtree-a468a4d87836dc1c
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::single_node_works ... ok
[INFO] [stdout] test tests::multi_node_works ... ok
[INFO] [stderr]    Doc-tests plumtree
[INFO] [stdout] test tests::many_node_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/time.rs - time::Clock::now (line 35) ... ok
[INFO] [stdout] test src/time.rs - time::Clock::new (line 21) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "09845352d27cd4871c06fe0dc93590b4826fd3ec4b1e8c07255e07842d84482f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09845352d27cd4871c06fe0dc93590b4826fd3ec4b1e8c07255e07842d84482f", kill_on_drop: false }`
[INFO] [stdout] 09845352d27cd4871c06fe0dc93590b4826fd3ec4b1e8c07255e07842d84482f