[INFO] fetching crate skiplist 0.4.0...
[INFO] testing skiplist-0.4.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate skiplist 0.4.0 into /workspace/builds/worker-97/source
[INFO] validating manifest of crates.io crate skiplist 0.4.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate skiplist 0.4.0
[INFO] finished tweaking crates.io crate skiplist 0.4.0
[INFO] tweaked toml for crates.io crate skiplist 0.4.0 written to /workspace/builds/worker-97/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65da44055e5f7a7f810bf1b37ec8e29868591bd581981c884536e3bae0bd2bc4
[INFO] running `Command { std: "docker" "start" "-a" "65da44055e5f7a7f810bf1b37ec8e29868591bd581981c884536e3bae0bd2bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65da44055e5f7a7f810bf1b37ec8e29868591bd581981c884536e3bae0bd2bc4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65da44055e5f7a7f810bf1b37ec8e29868591bd581981c884536e3bae0bd2bc4", kill_on_drop: false }`
[INFO] [stdout] 65da44055e5f7a7f810bf1b37ec8e29868591bd581981c884536e3bae0bd2bc4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb6cc91d0faaf73edb1c47a643eff69d64d5ea17c6b701090dc1b7aeed657331
[INFO] running `Command { std: "docker" "start" "-a" "eb6cc91d0faaf73edb1c47a643eff69d64d5ea17c6b701090dc1b7aeed657331", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling skiplist v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.69s
[INFO] running `Command { std: "docker" "inspect" "eb6cc91d0faaf73edb1c47a643eff69d64d5ea17c6b701090dc1b7aeed657331", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb6cc91d0faaf73edb1c47a643eff69d64d5ea17c6b701090dc1b7aeed657331", kill_on_drop: false }`
[INFO] [stdout] eb6cc91d0faaf73edb1c47a643eff69d64d5ea17c6b701090dc1b7aeed657331
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64248c70c324a1a1394956ab9aa2c70325f07b26b53347d39eb565390374716f
[INFO] running `Command { std: "docker" "start" "-a" "64248c70c324a1a1394956ab9aa2c70325f07b26b53347d39eb565390374716f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling crossbeam-deque v0.8.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling criterion-plot v0.4.4
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]    Compiling serde_cbor v0.11.2
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling criterion v0.3.5
[INFO] [stderr]    Compiling skiplist v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 25.46s
[INFO] running `Command { std: "docker" "inspect" "64248c70c324a1a1394956ab9aa2c70325f07b26b53347d39eb565390374716f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64248c70c324a1a1394956ab9aa2c70325f07b26b53347d39eb565390374716f", kill_on_drop: false }`
[INFO] [stdout] 64248c70c324a1a1394956ab9aa2c70325f07b26b53347d39eb565390374716f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-97/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c843b6a459133803dbb227d4e60b91100afd5ee3f506ea6b6c2801e742c1af7b
[INFO] running `Command { std: "docker" "start" "-a" "c843b6a459133803dbb227d4e60b91100afd5ee3f506ea6b6c2801e742c1af7b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/skiplist-077fd3629e393d30)
[INFO] [stdout] 
[INFO] [stdout] running 76 tests
[INFO] [stdout] test level_generator::tests::new ... ok
[INFO] [stdout] test ordered_skiplist::tests::contains ... ok
[INFO] [stdout] test ordered_skiplist::tests::basic_small ... ok
[INFO] [stdout] test ordered_skiplist::tests::clear ... ok
[INFO] [stdout] test ordered_skiplist::tests::debug_display ... ok
[INFO] [stdout] test ordered_skiplist::tests::range_small ... ok
[INFO] [stdout] test skiplist::tests::append_test ... ok
[INFO] [stdout] test ordered_skiplist::tests::equality ... ok
[INFO] [stdout] test skiplist::tests::clear ... ok
[INFO] [stdout] test skiplist::tests::basic_small ... ok
[INFO] [stdout] test ordered_skiplist::tests::with_comp ... ok
[INFO] [stdout] test skiplist::tests::insert_rand ... ok
[INFO] [stdout] test ordered_skiplist::tests::sort_by ... ok
[INFO] [stdout] test skiplist::tests::debug_display ... ok
[INFO] [stdout] test skiplist::tests::last ... ok
[INFO] [stdout] test skiplist::tests::push_front ... ok
[INFO] [stdout] test skiplist::tests::contains ... ok
[INFO] [stdout] test skiplist::tests::range_small ... ok
[INFO] [stdout] test ordered_skiplist::tests::range_1000 ... ok
[INFO] [stdout] test ordered_skiplist::tests::remove ... ok
[INFO] [stdout] test skipmap::tests::clear ... ok
[INFO] [stdout] test skipmap::tests::basic_small ... ok
[INFO] [stdout] test skiplist::tests::insert_repeat ... ok
[INFO] [stdout] test skiplist::tests::push_back ... ok
[INFO] [stdout] test skipmap::tests::contains ... ok
[INFO] [stdout] test skiplist::tests::equality ... ok
[INFO] [stdout] test skipmap::tests::debug_display ... ok
[INFO] [stdout] test skipmap::tests::equality ... ok
[INFO] [stdout] test skipmap::tests::insert_existing ... ok
[INFO] [stdout] test skipnode::test::miri_test_check ... ok
[INFO] [stdout] test skipnode::test::miri_test_into_iter ... ok
[INFO] [stdout] test skipnode::test::miri_test_insert ... ok
[INFO] [stdout] test skipnode::test::miri_test_distance ... ok
[INFO] [stdout] test skipnode::test::miri_test_iter ... ok
[INFO] [stdout] test skipnode::test::miri_test_iter_mut ... ok
[INFO] [stdout] test skipmap::tests::range_small ... ok
[INFO] [stdout] test skipnode::test::miri_test_remove ... ok
[INFO] [stdout] test skipnode::test::test_covariance ... ok
[INFO] [stdout] test skipnode::test::miri_test_retain ... ok
[INFO] [stdout] test skipnode::test::test_level_index ... ok
[INFO] [stdout] test skipnode::test::test_level_required ... ok
[INFO] [stdout] test skiplist::tests::inplace_mut ... ok
[INFO] [stdout] test skiplist::tests::range_mut_1000 ... ok
[INFO] [stdout] test skiplist::tests::range_1000 ... ok
[INFO] [stdout] test skipmap::tests::iter_key_val ... ok
[INFO] [stdout] test skipmap::tests::iter_rev ... ok
[INFO] [stdout] test skipmap::tests::range_1000 ... ok
[INFO] [stdout] test skiplist::tests::remove_rand ... ok
[INFO] [stdout] test skipmap::tests::iter_mixed ... ok
[INFO] [stdout] test ordered_skiplist::tests::remove_index ... ok
[INFO] [stdout] test ordered_skiplist::tests::index_pop ... ok
[INFO] [stdout] test skipmap::tests::index_pop ... ok
[INFO] [stdout] test skiplist::tests::index_pop ... ok
[INFO] [stdout] test skipmap::tests::remove_index ... ok
[INFO] [stdout] test level_generator::tests::invalid_p_0 - should panic ... ok
[INFO] [stdout] test level_generator::tests::invalid_total - should panic ... ok
[INFO] [stdout] test level_generator::tests::invalid_p_1 - should panic ... ok
[INFO] [stdout] test ordered_skiplist::tests::sort_by_panic - should panic ... ok
[INFO] [stdout] test ordered_skiplist::tests::iter ... ok
[INFO] [stdout] test ordered_skiplist::tests::iter_mixed ... ok
[INFO] [stdout] test ordered_skiplist::tests::iter_rev ... ok
[INFO] [stdout] test skiplist::tests::iter_mixed ... ok
[INFO] [stdout] test skipmap::tests::iter ... ok
[INFO] [stdout] test skiplist::tests::iter_rev ... ok
[INFO] [stdout] test skiplist::tests::iter ... ok
[INFO] [stdout] test skiplist::tests::dedup ... ok
[INFO] [stdout] test ordered_skiplist::tests::retain ... ok
[INFO] [stdout] test ordered_skiplist::tests::dedup ... ok
[INFO] [stdout] test ordered_skiplist::tests::basic_large ... ok
[INFO] [stdout] test skipmap::tests::basic_large ... ok
[INFO] [stdout] test ordered_skiplist::tests::pop ... ok
[INFO] [stdout] test skiplist::tests::retain ... ok
[INFO] [stdout] test ordered_skiplist::tests::range ... ok
[INFO] [stdout] test skipmap::tests::range ... ok
[INFO] [stdout] test skiplist::tests::range ... ok
[INFO] [stderr]    Doc-tests skiplist
[INFO] [stdout] test skiplist::tests::basic_large ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 76 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.04s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 69 tests
[INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList<T>::retain (line 535) ... FAILED
[INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList<T>::pop_front (line 374) ... FAILED
[INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList<T>::remove_first (line 479) ... FAILED
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<T>::retain (line 412) ... FAILED
[INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList<T>::pop_back (line 399) ... FAILED
[INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap<K,V>::front (line 196) ... FAILED
[INFO] [stdout] test src/skiplist.rs - skiplist::SkipList<T>::range (line 488) ... FAILED
[INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap<K,V>::back_mut (line 262) ... FAILED
[INFO] [stdout] test src/ordered_skiplist.rs - ordered_skiplist::OrderedSkipList<T>::range (line 615) ... FAILED
[INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap<K,V>::get_mut (line 305) ... FAILED
[INFO] [stdout] test src/skipmap.rs - skipmap::SkipMap<K,V>::front_mut (line 219) ... FAILED
[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 skiplist --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern criterion=/opt/rustwide/target/debug/deps/libcriterion-52564854c0996906.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-6eb94b003c57a8fb.rlib --extern skiplist=/opt/rustwide/target/debug/deps/libskiplist-649f2b5e29f9c3a3.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "c843b6a459133803dbb227d4e60b91100afd5ee3f506ea6b6c2801e742c1af7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c843b6a459133803dbb227d4e60b91100afd5ee3f506ea6b6c2801e742c1af7b", kill_on_drop: false }`
[INFO] [stdout] c843b6a459133803dbb227d4e60b91100afd5ee3f506ea6b6c2801e742c1af7b