[INFO] fetching crate slab 0.4.3...
[INFO] testing slab-0.4.3 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate slab 0.4.3 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate slab 0.4.3 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slab 0.4.3
[INFO] finished tweaking crates.io crate slab 0.4.3
[INFO] tweaked toml for crates.io crate slab 0.4.3 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2353da5c0e9d5072d0743fc335f72af5d595e9588ec48a656d0469095db7da4
[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" "d2353da5c0e9d5072d0743fc335f72af5d595e9588ec48a656d0469095db7da4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2353da5c0e9d5072d0743fc335f72af5d595e9588ec48a656d0469095db7da4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2353da5c0e9d5072d0743fc335f72af5d595e9588ec48a656d0469095db7da4", kill_on_drop: false }`
[INFO] [stdout] d2353da5c0e9d5072d0743fc335f72af5d595e9588ec48a656d0469095db7da4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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] e98d490936d4b4468e32e4ff3e7fb93792648822207c3ae031c5df22b705640a
[INFO] running `Command { std: "docker" "start" "-a" "e98d490936d4b4468e32e4ff3e7fb93792648822207c3ae031c5df22b705640a", kill_on_drop: false }`
[INFO] [stderr]    Compiling slab v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "e98d490936d4b4468e32e4ff3e7fb93792648822207c3ae031c5df22b705640a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e98d490936d4b4468e32e4ff3e7fb93792648822207c3ae031c5df22b705640a", kill_on_drop: false }`
[INFO] [stdout] e98d490936d4b4468e32e4ff3e7fb93792648822207c3ae031c5df22b705640a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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] ca8dab49aaa5082e27c79e2cef046a10d1d4a28b34ae50c5a46ce3099fa88b4f
[INFO] running `Command { std: "docker" "start" "-a" "ca8dab49aaa5082e27c79e2cef046a10d1d4a28b34ae50c5a46ce3099fa88b4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling serde_test v1.0.126
[INFO] [stderr]    Compiling slab v0.4.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 18.12s
[INFO] running `Command { std: "docker" "inspect" "ca8dab49aaa5082e27c79e2cef046a10d1d4a28b34ae50c5a46ce3099fa88b4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca8dab49aaa5082e27c79e2cef046a10d1d4a28b34ae50c5a46ce3099fa88b4f", kill_on_drop: false }`
[INFO] [stdout] ca8dab49aaa5082e27c79e2cef046a10d1d4a28b34ae50c5a46ce3099fa88b4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "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] 3eee1c25b2aaa24cba7c008daeaf7c7364fc8c0bd96223fc01871d3bb9265446
[INFO] running `Command { std: "docker" "start" "-a" "3eee1c25b2aaa24cba7c008daeaf7c7364fc8c0bd96223fc01871d3bb9265446", 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-5c030d1079c3fb9e)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/serde.rs (/opt/rustwide/target/debug/deps/serde-7d598375f6dca910)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/slab.rs (/opt/rustwide/target/debug/deps/slab-d9f08c16102a01fd)
[INFO] [stdout] 
[INFO] [stdout] running 40 tests
[INFO] [stdout] test compact_empty ... ok
[INFO] [stdout] test compact_doesnt_move_if_closure_errors ... ok
[INFO] [stdout] test clear ... ok
[INFO] [stdout] test compact_no_moves_needed ... ok
[INFO] [stdout] test compact_moves_successfully ... ok
[INFO] [stdout] test from_iterator_sorted ... ok
[INFO] [stdout] test from_iterator_unordered ... ok
[INFO] [stdout] test insert_get_remove_many ... ok
[INFO] [stdout] test insert_with_vacant_entry ... ok
[INFO] [stdout] test insert_get_remove_one ... ok
[INFO] [stdout] test insert_get_many ... ok
[INFO] [stdout] test get_vacant_entry_without_using ... ok
[INFO] [stdout] test from_iterator_new_in_order ... ok
[INFO] [stdout] test iter ... ok
[INFO] [stdout] test iter_mut ... ok
[INFO] [stdout] test drain_rev ... ok
[INFO] [stdout] test key_of_tagged ... ok
[INFO] [stdout] test key_of_layout_optimizable ... ok
[INFO] [stdout] test reserve_exact_does_not_allocate_if_available ... ok
[INFO] [stdout] test iter_rev ... ok
[INFO] [stdout] test key_of_zst ... ok
[INFO] [stdout] test retain ... ok
[INFO] [stdout] test into_iter_rev ... ok
[INFO] [stdout] test into_iter ... ok
[INFO] [stdout] test fully_consumed_drain ... ok
[INFO] [stdout] test shrink_to_fit_doesnt_recreate_list_when_nothing_can_be_done ... ok
[INFO] [stdout] test shrink_to_fit_doesnt_move ... ok
[INFO] [stdout] test slab_get_mut ... ok
[INFO] [stdout] test partially_consumed_drain ... ok
[INFO] [stdout] test iter_mut_rev ... ok
[INFO] [stdout] test reserve_does_not_allocate_if_available ... ok
[INFO] [stdout] test shrink_to_fit_no_vacant ... ok
[INFO] [stdout] test shrink_to_fit_empty ... ok
[INFO] [stdout] test double_remove_panics - should panic ... ok
[INFO] [stdout] test invalid_get_mut_panics - should panic ... ok
[INFO] [stdout] test invalid_get_panics - should panic ... ok
[INFO] [stdout] test invalid_remove_panics - should panic ... ok
[INFO] [stdout] test reserve_does_panic_with_capacity_overflow - should panic ... ok
[INFO] [stdout] test reserve_exact_does_panic_with_capacity_overflow - should panic ... ok
[INFO] [stdout] test compact_handles_closure_panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 40 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests slab
[INFO] [stdout] 
[INFO] [stdout] running 36 tests
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name slab --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern serde=/opt/rustwide/target/debug/deps/libserde-af61c44e3bed9e8f.rlib --extern serde_test=/opt/rustwide/target/debug/deps/libserde_test-d7fbaa51bcdc293f.rlib --extern slab=/opt/rustwide/target/debug/deps/libslab-b331bc6ad403a210.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="std"' --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "3eee1c25b2aaa24cba7c008daeaf7c7364fc8c0bd96223fc01871d3bb9265446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3eee1c25b2aaa24cba7c008daeaf7c7364fc8c0bd96223fc01871d3bb9265446", kill_on_drop: false }`
[INFO] [stdout] 3eee1c25b2aaa24cba7c008daeaf7c7364fc8c0bd96223fc01871d3bb9265446