[INFO] fetching crate skiplist 0.4.0...
[INFO] testing skiplist-0.4.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate skiplist 0.4.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate skiplist 0.4.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c76dbcc137939af81b0eba6858f5b33476ffe74bc9a8402db02401957141d197
[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" "c76dbcc137939af81b0eba6858f5b33476ffe74bc9a8402db02401957141d197", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c76dbcc137939af81b0eba6858f5b33476ffe74bc9a8402db02401957141d197", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c76dbcc137939af81b0eba6858f5b33476ffe74bc9a8402db02401957141d197", kill_on_drop: false }`
[INFO] [stdout] c76dbcc137939af81b0eba6858f5b33476ffe74bc9a8402db02401957141d197
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f902e259d38ecc6dc9a4b60ce35a731c190a55bb5a834f0fdf3aaf845a4f3c87
[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" "f902e259d38ecc6dc9a4b60ce35a731c190a55bb5a834f0fdf3aaf845a4f3c87", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling skiplist v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.05s
[INFO] running `Command { std: "docker" "inspect" "f902e259d38ecc6dc9a4b60ce35a731c190a55bb5a834f0fdf3aaf845a4f3c87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f902e259d38ecc6dc9a4b60ce35a731c190a55bb5a834f0fdf3aaf845a4f3c87", kill_on_drop: false }`
[INFO] [stdout] f902e259d38ecc6dc9a4b60ce35a731c190a55bb5a834f0fdf3aaf845a4f3c87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 88d4156703b5ed478e417d6cb723c60e60f54dee681151e927252c7000f9f5db
[INFO] running `Command { std: "docker" "start" "-a" "88d4156703b5ed478e417d6cb723c60e60f54dee681151e927252c7000f9f5db", kill_on_drop: false }`
[INFO] [stderr]    Compiling skiplist v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.86s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/skiplist-65b3b709a0124f89)
[INFO] running `Command { std: "docker" "inspect" "88d4156703b5ed478e417d6cb723c60e60f54dee681151e927252c7000f9f5db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88d4156703b5ed478e417d6cb723c60e60f54dee681151e927252c7000f9f5db", kill_on_drop: false }`
[INFO] [stdout] 88d4156703b5ed478e417d6cb723c60e60f54dee681151e927252c7000f9f5db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "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] 3792d66b069ebccf996b44d5cc508a714b4128a104a43c5d1e47cdeab12dae76
[INFO] running `Command { std: "docker" "start" "-a" "3792d66b069ebccf996b44d5cc508a714b4128a104a43c5d1e47cdeab12dae76", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/skiplist-65b3b709a0124f89)
[INFO] [stdout] 
[INFO] [stdout] running 76 tests
[INFO] [stdout] test level_generator::tests::new ... ok
[INFO] [stdout] test ordered_skiplist::tests::basic_small ... ok
[INFO] [stdout] test ordered_skiplist::tests::clear ... ok
[INFO] [stdout] test ordered_skiplist::tests::contains ... ok
[INFO] [stdout] test ordered_skiplist::tests::range_small ... ok
[INFO] [stdout] test ordered_skiplist::tests::equality ... ok
[INFO] [stdout] test ordered_skiplist::tests::debug_display ... ok
[INFO] [stdout] test ordered_skiplist::tests::range_1000 ... ok
[INFO] [stdout] test ordered_skiplist::tests::remove ... ok
[INFO] [stdout] test ordered_skiplist::tests::sort_by ... ok
[INFO] [stdout] test skiplist::tests::append_test ... ok
[INFO] [stdout] test ordered_skiplist::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 ordered_skiplist::tests::with_comp ... 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 skiplist::tests::contains ... ok
[INFO] [stdout] test skiplist::tests::basic_small ... ok
[INFO] [stdout] test skiplist::tests::debug_display ... ok
[INFO] [stdout] test skiplist::tests::clear ... ok
[INFO] [stdout] test ordered_skiplist::tests::index_pop ... ok
[INFO] [stdout] test skiplist::tests::equality ... ok
[INFO] [stdout] test skiplist::tests::insert_rand ... ok
[INFO] [stdout] test skiplist::tests::insert_repeat ... 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::inplace_mut ... ok
[INFO] [stdout] test ordered_skiplist::tests::iter_mixed ... ok
[INFO] [stdout] test skiplist::tests::range_1000 ... ok
[INFO] [stdout] test skiplist::tests::range_small ... ok
[INFO] [stdout] test ordered_skiplist::tests::iter_rev ... ok
[INFO] [stdout] test skiplist::tests::index_pop ... ok
[INFO] [stdout] test skiplist::tests::remove_rand ... ok
[INFO] [stdout] test skipmap::tests::basic_small ... ok
[INFO] [stdout] test skiplist::tests::range_mut_1000 ... ok
[INFO] [stdout] test skipmap::tests::clear ... ok
[INFO] [stdout] test skipmap::tests::debug_display ... ok
[INFO] [stdout] test skipmap::tests::contains ... ok
[INFO] [stdout] test ordered_skiplist::tests::iter ... ok
[INFO] [stdout] test skipmap::tests::equality ... ok
[INFO] [stdout] test skipmap::tests::insert_existing ... ok
[INFO] [stdout] test skipmap::tests::iter_key_val ... ok
[INFO] [stdout] test ordered_skiplist::tests::basic_large ... ok
[INFO] [stdout] test skipmap::tests::iter_mixed ... ok
[INFO] [stdout] test skipmap::tests::iter_rev ... ok
[INFO] [stdout] test ordered_skiplist::tests::retain ... ok
[INFO] [stdout] test skipmap::tests::range_small ... ok
[INFO] [stdout] test skiplist::tests::iter_mixed ... 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_into_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::miri_test_remove ... ok
[INFO] [stdout] test skipnode::test::miri_test_retain ... ok
[INFO] [stdout] test skipnode::test::test_covariance ... ok
[INFO] [stdout] test skipnode::test::test_level_index ... ok
[INFO] [stdout] test skipnode::test::test_level_required ... ok
[INFO] [stdout] test skipnode::test::miri_test_insert ... ok
[INFO] [stdout] test skiplist::tests::dedup ... ok
[INFO] [stdout] test skipmap::tests::index_pop ... ok
[INFO] [stdout] test skiplist::tests::iter ... ok
[INFO] [stdout] test skiplist::tests::iter_rev ... ok
[INFO] [stdout] test ordered_skiplist::tests::dedup ... ok
[INFO] [stdout] test skipmap::tests::basic_large ... ok
[INFO] [stdout] test skipmap::tests::remove_index ... ok
[INFO] [stdout] test skipmap::tests::iter ... ok
[INFO] [stdout] test ordered_skiplist::tests::pop ... ok
[INFO] [stdout] test skiplist::tests::retain ... ok
[INFO] [stdout] test skipmap::tests::range ... ok
[INFO] [stdout] test ordered_skiplist::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 5.10s
[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-6e909c54bc39a631.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-07e57542a618e596.rlib --extern skiplist=/opt/rustwide/target/debug/deps/libskiplist-b57e056c144615a7.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "3792d66b069ebccf996b44d5cc508a714b4128a104a43c5d1e47cdeab12dae76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3792d66b069ebccf996b44d5cc508a714b4128a104a43c5d1e47cdeab12dae76", kill_on_drop: false }`
[INFO] [stdout] 3792d66b069ebccf996b44d5cc508a714b4128a104a43c5d1e47cdeab12dae76