[INFO] fetching crate skiplist 0.4.0...
[INFO] testing skiplist-0.4.0 against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] extracting crate skiplist 0.4.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate skiplist 0.4.0 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 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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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 half v1.7.1
[INFO] [stderr]   Downloaded plotters-backend v0.3.2
[INFO] [stderr]   Downloaded itertools v0.10.1
[INFO] [stderr]   Downloaded rustc_version v0.4.0
[INFO] [stderr]   Downloaded semver v1.0.3
[INFO] [stderr]   Downloaded plotters-svg v0.3.1
[INFO] [stderr]   Downloaded tinytemplate v1.2.1
[INFO] [stderr]   Downloaded cast v0.2.7
[INFO] [stderr]   Downloaded criterion v0.3.4
[INFO] [stderr]   Downloaded oorandom v11.1.3
[INFO] [stderr]   Downloaded plotters v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 12341d0cf831860c69c6027b502f66493d16cccbbce317f0a2fc049e614ffb69
[INFO] running `Command { std: "docker" "start" "-a" "12341d0cf831860c69c6027b502f66493d16cccbbce317f0a2fc049e614ffb69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12341d0cf831860c69c6027b502f66493d16cccbbce317f0a2fc049e614ffb69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12341d0cf831860c69c6027b502f66493d16cccbbce317f0a2fc049e614ffb69", kill_on_drop: false }`
[INFO] [stdout] 12341d0cf831860c69c6027b502f66493d16cccbbce317f0a2fc049e614ffb69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b7e2d08f4d5f711b34f0bf9c72bd44046f36500d59e767eda58860320ac8472c
[INFO] running `Command { std: "docker" "start" "-a" "b7e2d08f4d5f711b34f0bf9c72bd44046f36500d59e767eda58860320ac8472c", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[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 2.73s
[INFO] running `Command { std: "docker" "inspect" "b7e2d08f4d5f711b34f0bf9c72bd44046f36500d59e767eda58860320ac8472c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7e2d08f4d5f711b34f0bf9c72bd44046f36500d59e767eda58860320ac8472c", kill_on_drop: false }`
[INFO] [stdout] b7e2d08f4d5f711b34f0bf9c72bd44046f36500d59e767eda58860320ac8472c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 83013f629ca3366aa9099c486e8fb001caa316f28afcf23ea7bc26c368da32fb
[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" "83013f629ca3366aa9099c486e8fb001caa316f28afcf23ea7bc26c368da32fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling semver v1.0.3
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling plotters-backend v0.3.2
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling half v1.7.1
[INFO] [stderr]    Compiling oorandom v11.1.3
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling plotters-svg v0.3.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling crossbeam-deque v0.8.0
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling criterion v0.3.4
[INFO] [stderr]    Compiling skiplist v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 35.42s
[INFO] running `Command { std: "docker" "inspect" "83013f629ca3366aa9099c486e8fb001caa316f28afcf23ea7bc26c368da32fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83013f629ca3366aa9099c486e8fb001caa316f28afcf23ea7bc26c368da32fb", kill_on_drop: false }`
[INFO] [stdout] 83013f629ca3366aa9099c486e8fb001caa316f28afcf23ea7bc26c368da32fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1a77ac50eb661a445888465596385a024c2e84ae6a8ec47712c7cb4a1a6f19fd
[INFO] running `Command { std: "docker" "start" "-a" "1a77ac50eb661a445888465596385a024c2e84ae6a8ec47712c7cb4a1a6f19fd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/skiplist-5163cfc7d7bb8fb1)
[INFO] [stdout] running 76 tests
[INFO] [stdout] test ordered_skiplist::tests::basic_small ... ok
[INFO] [stdout] test ordered_skiplist::tests::clear ... ok
[INFO] [stdout] test level_generator::tests::new ... ok
[INFO] [stdout] test ordered_skiplist::tests::contains ... ok
[INFO] [stdout] test ordered_skiplist::tests::debug_display ... ok
[INFO] [stdout] test ordered_skiplist::tests::remove ... ok
[INFO] [stdout] test ordered_skiplist::tests::range_small ... ok
[INFO] [stdout] test ordered_skiplist::tests::sort_by ... ok
[INFO] [stdout] test ordered_skiplist::tests::range_1000 ... ok
[INFO] [stdout] test ordered_skiplist::tests::equality ... ok
[INFO] [stdout] test level_generator::tests::invalid_p_0 - should panic ... ok
[INFO] [stdout] test skiplist::tests::append_test ... ok
[INFO] [stdout] test skiplist::tests::basic_small ... ok
[INFO] [stdout] test level_generator::tests::invalid_p_1 - should panic ... ok
[INFO] [stdout] test skiplist::tests::clear ... ok
[INFO] [stdout] test ordered_skiplist::tests::with_comp ... ok
[INFO] [stdout] test level_generator::tests::invalid_total - should panic ... ok
[INFO] [stdout] test skiplist::tests::contains ... ok
[INFO] [stdout] test skiplist::tests::debug_display ... ok
[INFO] [stdout] test ordered_skiplist::tests::sort_by_panic - should panic ... ok
[INFO] [stdout] test ordered_skiplist::tests::remove_index ... ok
[INFO] [stdout] test ordered_skiplist::tests::index_pop ... ok
[INFO] [stdout] test skiplist::tests::equality ... ok
[INFO] [stdout] test ordered_skiplist::tests::iter ... ok
[INFO] [stdout] test skiplist::tests::insert_repeat ... ok
[INFO] [stdout] test skiplist::tests::inplace_mut ... ok
[INFO] [stdout] test skiplist::tests::insert_rand ... ok
[INFO] [stdout] test skiplist::tests::last ... ok
[INFO] [stdout] test skiplist::tests::push_back ... ok
[INFO] [stdout] test skiplist::tests::push_front ... ok
[INFO] [stdout] test skiplist::tests::range_1000 ... ok
[INFO] [stdout] test skiplist::tests::range_small ... ok
[INFO] [stdout] test skiplist::tests::range_mut_1000 ... ok
[INFO] [stdout] test ordered_skiplist::tests::iter_mixed ... ok
[INFO] [stdout] test skiplist::tests::remove_rand ... ok
[INFO] [stdout] test skipmap::tests::basic_small ... ok
[INFO] [stdout] test skipmap::tests::clear ... ok
[INFO] [stdout] test skiplist::tests::index_pop ... ok
[INFO] [stdout] test skipmap::tests::contains ... ok
[INFO] [stdout] test ordered_skiplist::tests::dedup ... ok
[INFO] [stdout] test skipmap::tests::debug_display ... ok
[INFO] [stdout] test skipmap::tests::insert_existing ... ok
[INFO] [stdout] test skipmap::tests::equality ... ok
[INFO] [stdout] test ordered_skiplist::tests::iter_rev ... ok
[INFO] [stdout] test skipmap::tests::iter_key_val ... ok
[INFO] [stdout] test skipmap::tests::iter_mixed ... ok
[INFO] [stdout] test ordered_skiplist::tests::basic_large ... ok
[INFO] [stdout] test skipmap::tests::iter_rev ... ok
[INFO] [stdout] test skipmap::tests::range_small ... ok
[INFO] [stdout] test skiplist::tests::dedup ... ok
[INFO] [stdout] test skipnode::test::miri_test_check ... ok
[INFO] [stdout] test skipmap::tests::range_1000 ... ok
[INFO] [stdout] test skipnode::test::miri_test_distance ... ok
[INFO] [stdout] test skipnode::test::miri_test_insert ... ok
[INFO] [stdout] test skipnode::test::miri_test_into_iter ... ok
[INFO] [stdout] test ordered_skiplist::tests::retain ... ok
[INFO] [stdout] test skipnode::test::miri_test_remove ... ok
[INFO] [stdout] test skiplist::tests::iter_mixed ... ok
[INFO] [stdout] test skiplist::tests::iter ... ok
[INFO] [stdout] test skipnode::test::miri_test_iter ... ok
[INFO] [stdout] test skipnode::test::miri_test_iter_mut ... 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::iter_rev ... ok
[INFO] [stdout] test skipmap::tests::index_pop ... ok
[INFO] [stdout] test skipmap::tests::basic_large ... ok
[INFO] [stdout] test ordered_skiplist::tests::pop ... ok
[INFO] [stdout] test skipmap::tests::iter ... ok
[INFO] [stdout] test skipmap::tests::remove_index ... 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] [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 3.80s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests skiplist
[INFO] [stdout] 
[INFO] [stdout] running 69 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 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-11e055f54183c0bd.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-82acc2d04d72d7e9.rlib --extern skiplist=/opt/rustwide/target/debug/deps/libskiplist-bc1f7a4228b1c365.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "1a77ac50eb661a445888465596385a024c2e84ae6a8ec47712c7cb4a1a6f19fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a77ac50eb661a445888465596385a024c2e84ae6a8ec47712c7cb4a1a6f19fd", kill_on_drop: false }`
[INFO] [stdout] 1a77ac50eb661a445888465596385a024c2e84ae6a8ec47712c7cb4a1a6f19fd