[INFO] fetching crate slab_tree 0.3.2...
[INFO] testing slab_tree-0.3.2 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate slab_tree 0.3.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate slab_tree 0.3.2 on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slab_tree 0.3.2
[INFO] finished tweaking crates.io crate slab_tree 0.3.2
[INFO] tweaked toml for crates.io crate slab_tree 0.3.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate slab_tree 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded snowflake v1.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "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] 4a5d978f39d572be7a625eae2d5b00ee84842781f5bfe0c3e6130f669d0c6e22
[INFO] running `Command { std: "docker" "start" "-a" "4a5d978f39d572be7a625eae2d5b00ee84842781f5bfe0c3e6130f669d0c6e22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a5d978f39d572be7a625eae2d5b00ee84842781f5bfe0c3e6130f669d0c6e22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a5d978f39d572be7a625eae2d5b00ee84842781f5bfe0c3e6130f669d0c6e22", kill_on_drop: false }`
[INFO] [stdout] 4a5d978f39d572be7a625eae2d5b00ee84842781f5bfe0c3e6130f669d0c6e22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1cdfb001e0cbafc5b653f2b601128f231bdf4d505e7bc1258117f123dbed8ca
[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" "a1cdfb001e0cbafc5b653f2b601128f231bdf4d505e7bc1258117f123dbed8ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling snowflake v1.3.0
[INFO] [stderr]    Compiling slab_tree v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "a1cdfb001e0cbafc5b653f2b601128f231bdf4d505e7bc1258117f123dbed8ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1cdfb001e0cbafc5b653f2b601128f231bdf4d505e7bc1258117f123dbed8ca", kill_on_drop: false }`
[INFO] [stdout] a1cdfb001e0cbafc5b653f2b601128f231bdf4d505e7bc1258117f123dbed8ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2934f457a96e0a3e9574794f35773961ed26f7fb51f3784d7a67744c623362c6
[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" "2934f457a96e0a3e9574794f35773961ed26f7fb51f3784d7a67744c623362c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling slab_tree v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.87s
[INFO] running `Command { std: "docker" "inspect" "2934f457a96e0a3e9574794f35773961ed26f7fb51f3784d7a67744c623362c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2934f457a96e0a3e9574794f35773961ed26f7fb51f3784d7a67744c623362c6", kill_on_drop: false }`
[INFO] [stdout] 2934f457a96e0a3e9574794f35773961ed26f7fb51f3784d7a67744c623362c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1ba029f3018c6e2fe1d986cfa84835f4c3ee70b222b528567d62e3ad52e609d3
[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" "1ba029f3018c6e2fe1d986cfa84835f4c3ee70b222b528567d62e3ad52e609d3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slab_tree-c067b6d92bbe2ce2)
[INFO] [stdout] 
[INFO] [stdout] running 60 tests
[INFO] [stdout] test core_tree::tests::get_with_bad_id ... ok
[INFO] [stdout] test core_tree::tests::insert ... ok
[INFO] [stdout] test core_tree::tests::remove ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::append_two_children_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::append_no_children_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::first_child ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::last_child ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::next_sibling ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::node_id ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::parent ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::prepend_no_children_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::prepend_single_child_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::prepend_two_children_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::prev_sibling ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_first_drop_grandchild_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_first_drop_single_child_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_first_drop_three_children_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_first_drop_two_children_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_first_orphan_grandchild_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_last_no_children_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_last_single_child_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_last_orphan_grandchild_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_last_two_children_present ... ok
[INFO] [stdout] test node::node_ref::node_ref_tests::ancestors ... ok
[INFO] [stdout] test node::node_ref::node_ref_tests::children ... ok
[INFO] [stdout] test node::node_ref::node_ref_tests::data ... ok
[INFO] [stdout] test node::node_ref::node_ref_tests::first_child ... ok
[INFO] [stdout] test node::node_ref::node_ref_tests::last_child ... ok
[INFO] [stdout] test node::node_ref::node_ref_tests::next_sibling ... ok
[INFO] [stdout] test node::node_ref::node_ref_tests::parent ... ok
[INFO] [stdout] test slab::tests::double_remove ... ok
[INFO] [stdout] test slab::tests::get ... ok
[INFO] [stdout] test slab::tests::remove_basic ... ok
[INFO] [stdout] test slab::tests::get_mut ... ok
[INFO] [stdout] test core_tree::tests::get ... ok
[INFO] [stdout] test slab::tests::insert ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_first_no_children_present ... ok
[INFO] [stdout] test core_tree::tests::get_mut ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::append_single_child_present ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::remove_last_three_children_present ... ok
[INFO] [stdout] test slab::tests::remove_with_bad_index ... ok
[INFO] [stdout] test node::node_ref::node_ref_tests::prev_sibling ... ok
[INFO] [stdout] test node::node_mut::node_mut_tests::data ... ok
[INFO] [stdout] test tree::tree_tests::address_dropped ... ok
[INFO] [stdout] test tree::tree_tests::get_node ... ok
[INFO] [stdout] test tree::tree_tests::capacity ... ok
[INFO] [stdout] test tree::tree_tests::get_node_mut ... ok
[INFO] [stdout] test tree::tree_tests::remove_orphan ... ok
[INFO] [stdout] test tree::tree_tests::remove_drop ... ok
[INFO] [stdout] test tree::tree_tests::root ... ok
[INFO] [stdout] test tree::tree_tests::remove_root_drop ... ok
[INFO] [stdout] test tree::tree_tests::root_id ... ok
[INFO] [stdout] test tree::tree_tests::remove_root_orphan ... ok
[INFO] [stdout] test slab::tests::remove_and_reinsert ... ok
[INFO] [stdout] test tree::tree_tests::root_mut ... ok
[INFO] [stdout] test core_tree::tests::capacity ... ok
[INFO] [stdout] test slab::tests::remove_multiple ... ok
[INFO] [stderr]    Doc-tests slab_tree
[INFO] [stdout] test tree::tree_tests::get ... ok
[INFO] [stdout] test tree::tree_tests::get_mut ... ok
[INFO] [stdout] test slab::tests::capacity ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 60 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 44 tests
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name slab_tree --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern slab_tree=/opt/rustwide/target/debug/deps/libslab_tree-a6c3b7cbd3ae6033.rlib --extern snowflake=/opt/rustwide/target/debug/deps/libsnowflake-54ed847ac5eb395d.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "1ba029f3018c6e2fe1d986cfa84835f4c3ee70b222b528567d62e3ad52e609d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ba029f3018c6e2fe1d986cfa84835f4c3ee70b222b528567d62e3ad52e609d3", kill_on_drop: false }`
[INFO] [stdout] 1ba029f3018c6e2fe1d986cfa84835f4c3ee70b222b528567d62e3ad52e609d3