[INFO] fetching crate utote 0.6.0...
[INFO] testing utote-0.6.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate utote 0.6.0 into /workspace/builds/worker-66/source
[INFO] validating manifest of crates.io crate utote 0.6.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-66/source/rust-toolchain
[INFO] started tweaking crates.io crate utote 0.6.0
[INFO] finished tweaking crates.io crate utote 0.6.0
[INFO] tweaked toml for crates.io crate utote 0.6.0 written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 540bd50b46d7f20219152fb47b771d1b1633a8e028f8d06dacbaf8c0dcad283a
[INFO] running `Command { std: "docker" "start" "-a" "540bd50b46d7f20219152fb47b771d1b1633a8e028f8d06dacbaf8c0dcad283a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "540bd50b46d7f20219152fb47b771d1b1633a8e028f8d06dacbaf8c0dcad283a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "540bd50b46d7f20219152fb47b771d1b1633a8e028f8d06dacbaf8c0dcad283a", kill_on_drop: false }`
[INFO] [stdout] 540bd50b46d7f20219152fb47b771d1b1633a8e028f8d06dacbaf8c0dcad283a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6675c86b69109e28ab2b6cc0df94b37838c562758e7d8b44a1ef26ef588013e
[INFO] running `Command { std: "docker" "start" "-a" "e6675c86b69109e28ab2b6cc0df94b37838c562758e7d8b44a1ef26ef588013e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling utote v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.53s
[INFO] running `Command { std: "docker" "inspect" "e6675c86b69109e28ab2b6cc0df94b37838c562758e7d8b44a1ef26ef588013e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6675c86b69109e28ab2b6cc0df94b37838c562758e7d8b44a1ef26ef588013e", kill_on_drop: false }`
[INFO] [stdout] e6675c86b69109e28ab2b6cc0df94b37838c562758e7d8b44a1ef26ef588013e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 732962a5401f5e6fc75144d0df232c13ce4addada9fab6779071cfa57d35ced3
[INFO] running `Command { std: "docker" "start" "-a" "732962a5401f5e6fc75144d0df232c13ce4addada9fab6779071cfa57d35ced3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling approx v0.4.0
[INFO] [stderr]    Compiling utote v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "732962a5401f5e6fc75144d0df232c13ce4addada9fab6779071cfa57d35ced3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "732962a5401f5e6fc75144d0df232c13ce4addada9fab6779071cfa57d35ced3", kill_on_drop: false }`
[INFO] [stdout] 732962a5401f5e6fc75144d0df232c13ce4addada9fab6779071cfa57d35ced3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d589cbc7a3930fa6027a87281f3a7a20d47b082d0fd6283f8ca388ed4ac88755
[INFO] running `Command { std: "docker" "start" "-a" "d589cbc7a3930fa6027a87281f3a7a20d47b082d0fd6283f8ca388ed4ac88755", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/utote-5b8a56aa73474139)
[INFO] [stdout] 
[INFO] [stdout] running 52 tests
[INFO] [stdout] test multiset::tests::from_array ... ok
[INFO] [stdout] test multiset::tests::test_argmax ... ok
[INFO] [stdout] test multiset::tests::test_argmin ... ok
[INFO] [stdout] test multiset::tests::test_choose ... ok
[INFO] [stdout] test multiset::tests::test_clear ... ok
[INFO] [stdout] test multiset::tests::test_add ... ok
[INFO] [stdout] test multiset::tests::test_collision_entropy ... ok
[INFO] [stdout] test multiset::tests::from_slice ... ok
[INFO] [stdout] test multiset::tests::test_contains ... ok
[INFO] [stdout] test multiset::tests::test_contains_unchecked ... ok
[INFO] [stdout] test multiset::tests::test_count_non_zero ... ok
[INFO] [stdout] test multiset::tests::test_count_zero ... ok
[INFO] [stdout] test multiset::tests::test_difference ... ok
[INFO] [stdout] test multiset::tests::test_div ... ok
[INFO] [stdout] test multiset::tests::test_empty ... ok
[INFO] [stdout] test multiset::tests::test_from_elements ... ok
[INFO] [stdout] test multiset::tests::test_from_elements_panic ... ok
[INFO] [stdout] test multiset::tests::test_generic ... ok
[INFO] [stdout] test multiset::tests::test_get ... ok
[INFO] [stdout] test multiset::tests::test_get_unchecked ... ok
[INFO] [stdout] test multiset::tests::test_imax ... ok
[INFO] [stdout] test multiset::tests::test_imin ... ok
[INFO] [stdout] test multiset::tests::test_index ... ok
[INFO] [stdout] test multiset::tests::test_insert ... ok
[INFO] [stdout] test multiset::tests::test_index_mut ... ok
[INFO] [stdout] test multiset::tests::test_insert_unchecked ... ok
[INFO] [stdout] test multiset::tests::test_intersection ... ok
[INFO] [stdout] test multiset::tests::test_is_any_greater ... ok
[INFO] [stdout] test multiset::tests::test_is_disjoint ... ok
[INFO] [stdout] test multiset::tests::test_is_any_lesser ... ok
[INFO] [stdout] test multiset::tests::test_is_empty ... ok
[INFO] [stdout] test multiset::tests::test_is_proper_subset ... ok
[INFO] [stdout] test multiset::tests::test_is_proper_superset ... ok
[INFO] [stdout] test multiset::tests::test_is_singleton ... ok
[INFO] [stdout] test multiset::tests::test_is_subset ... ok
[INFO] [stdout] test multiset::tests::test_is_superset ... ok
[INFO] [stdout] test multiset::tests::test_len ... ok
[INFO] [stdout] test multiset::tests::test_max ... ok
[INFO] [stdout] test multiset::tests::test_min ... ok
[INFO] [stdout] test multiset::tests::test_mul ... ok
[INFO] [stdout] test multiset::tests::test_new ... ok
[INFO] [stdout] test multiset::tests::test_rem ... ok
[INFO] [stdout] test multiset::tests::test_remove ... ok
[INFO] [stdout] test multiset::tests::test_remove_unchecked ... ok
[INFO] [stdout] test multiset::tests::test_repeat ... ok
[INFO] [stdout] test multiset::tests::test_shannon_entropy ... ok
[INFO] [stdout] test multiset::tests::test_sub ... ok
[INFO] [stdout] test multiset::tests::test_symmetric_difference ... ok
[INFO] [stdout] test multiset::tests::test_total ... ok
[INFO] [stdout] test multiset::tests::test_union ... ok
[INFO] [stdout] test multiset::tests::test_zip_map ... ok
[INFO] [stdout] test multiset::tests::to_array ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 52 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests utote
[INFO] [stdout] 
[INFO] [stdout] running 45 tests
[INFO] [stdout] test src/multiset.rs - multiset::Multiset (line 174) - compile ... ok
[INFO] [stdout] test src/lib.rs - (line 25) ... FAILED
[INFO] [stdout] test src/multiset.rs - multiset::Multiset (line 133) ... 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 utote --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern approx=/opt/rustwide/target/debug/deps/libapprox-728ecda554423607.rlib --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-7b6445d372d84407.rlib --extern paste=/opt/rustwide/target/debug/deps/libpaste-b66aa8d00e9b66d0.so --extern utote=/opt/rustwide/target/debug/deps/libutote-165e8ac29bf0fe06.rlib -C embed-bitcode=no --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "d589cbc7a3930fa6027a87281f3a7a20d47b082d0fd6283f8ca388ed4ac88755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d589cbc7a3930fa6027a87281f3a7a20d47b082d0fd6283f8ca388ed4ac88755", kill_on_drop: false }`
[INFO] [stdout] d589cbc7a3930fa6027a87281f3a7a20d47b082d0fd6283f8ca388ed4ac88755