[INFO] fetching crate flattree 2.0.0...
[INFO] testing flattree-2.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate flattree 2.0.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate flattree 2.0.0 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 flattree 2.0.0
[INFO] finished tweaking crates.io crate flattree 2.0.0
[INFO] tweaked toml for crates.io crate flattree 2.0.0 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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] cfa2a0ac2f21041ba90710d373c66bb110da8a08e011d92392b0bbeb1d4a5987
[INFO] running `Command { std: "docker" "start" "-a" "cfa2a0ac2f21041ba90710d373c66bb110da8a08e011d92392b0bbeb1d4a5987", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfa2a0ac2f21041ba90710d373c66bb110da8a08e011d92392b0bbeb1d4a5987", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfa2a0ac2f21041ba90710d373c66bb110da8a08e011d92392b0bbeb1d4a5987", kill_on_drop: false }`
[INFO] [stdout] cfa2a0ac2f21041ba90710d373c66bb110da8a08e011d92392b0bbeb1d4a5987
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fe4662a4d6ae0ee0d128c2a3f9aae07cfca95acdff172f237a80b866743dd345
[INFO] running `Command { std: "docker" "start" "-a" "fe4662a4d6ae0ee0d128c2a3f9aae07cfca95acdff172f237a80b866743dd345", kill_on_drop: false }`
[INFO] [stderr]    Compiling flattree v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "fe4662a4d6ae0ee0d128c2a3f9aae07cfca95acdff172f237a80b866743dd345", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe4662a4d6ae0ee0d128c2a3f9aae07cfca95acdff172f237a80b866743dd345", kill_on_drop: false }`
[INFO] [stdout] fe4662a4d6ae0ee0d128c2a3f9aae07cfca95acdff172f237a80b866743dd345
[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] c4c740bf37b7bbb1812ae1875fed2c8dc69371641fd10c7e0540a1e6ac434f3a
[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" "c4c740bf37b7bbb1812ae1875fed2c8dc69371641fd10c7e0540a1e6ac434f3a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling flattree v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "c4c740bf37b7bbb1812ae1875fed2c8dc69371641fd10c7e0540a1e6ac434f3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4c740bf37b7bbb1812ae1875fed2c8dc69371641fd10c7e0540a1e6ac434f3a", kill_on_drop: false }`
[INFO] [stdout] c4c740bf37b7bbb1812ae1875fed2c8dc69371641fd10c7e0540a1e6ac434f3a
[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] 12503c80d590fe544eed0a0a58198edccb708f2bb40df59543102d74e995a7a8
[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" "12503c80d590fe544eed0a0a58198edccb708f2bb40df59543102d74e995a7a8", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/flattree-c8c8e148adb5eb73
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test test_count ... ok
[INFO] [stdout] test test_full_roots ... ok
[INFO] [stdout] test test_base_blocks ... ok
[INFO] [stdout] test test_child_to_parent_to_child ... ok
[INFO] [stdout] test test_iterator_non_leaf_start ... ok
[INFO] [stdout] test test_left_child ... ok
[INFO] [stdout] test test_left_span ... ok
[INFO] [stdout] test test_parents ... ok
[INFO] [stdout] test test_right_child ... ok
[INFO] [stdout] test test_iterator ... ok
[INFO] [stdout] test test_children ... ok
[INFO] [stdout] test test_offsets ... ok
[INFO] [stdout] test test_depths ... ok
[INFO] [stdout] test test_right_span ... ok
[INFO] [stdout] test test_siblings ... ok
[INFO] [stdout] test test_spans ... ok
[INFO] [stderr]    Doc-tests flattree
[INFO] [stdout] test test_parent_gt_int32 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "12503c80d590fe544eed0a0a58198edccb708f2bb40df59543102d74e995a7a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12503c80d590fe544eed0a0a58198edccb708f2bb40df59543102d74e995a7a8", kill_on_drop: false }`
[INFO] [stdout] 12503c80d590fe544eed0a0a58198edccb708f2bb40df59543102d74e995a7a8