[INFO] fetching crate pushgen 0.0.2...
[INFO] testing pushgen-0.0.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate pushgen 0.0.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate pushgen 0.0.2 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] started tweaking crates.io crate pushgen 0.0.2
[INFO] finished tweaking crates.io crate pushgen 0.0.2
[INFO] tweaked toml for crates.io crate pushgen 0.0.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate pushgen 0.0.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] aa12ff7d4ec6cfa6dae979245374431b7eb11f8a99d6dfb4964bb968c2b90401
[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" "aa12ff7d4ec6cfa6dae979245374431b7eb11f8a99d6dfb4964bb968c2b90401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa12ff7d4ec6cfa6dae979245374431b7eb11f8a99d6dfb4964bb968c2b90401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa12ff7d4ec6cfa6dae979245374431b7eb11f8a99d6dfb4964bb968c2b90401", kill_on_drop: false }`
[INFO] [stdout] aa12ff7d4ec6cfa6dae979245374431b7eb11f8a99d6dfb4964bb968c2b90401
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 840c3091fe0c831f18c85ac9af3493b78a3b0cfead8dd8ba27551cc42ec8261e
[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" "840c3091fe0c831f18c85ac9af3493b78a3b0cfead8dd8ba27551cc42ec8261e", kill_on_drop: false }`
[INFO] [stderr]    Compiling pushgen v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "840c3091fe0c831f18c85ac9af3493b78a3b0cfead8dd8ba27551cc42ec8261e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "840c3091fe0c831f18c85ac9af3493b78a3b0cfead8dd8ba27551cc42ec8261e", kill_on_drop: false }`
[INFO] [stdout] 840c3091fe0c831f18c85ac9af3493b78a3b0cfead8dd8ba27551cc42ec8261e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 53be05f005ff956fee1e913f094c871d25b8d0b38547ce1fea68f698fa491131
[INFO] running `Command { std: "docker" "start" "-a" "53be05f005ff956fee1e913f094c871d25b8d0b38547ce1fea68f698fa491131", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling plotters-backend v0.3.0
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling cast v0.2.6
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling plotters-svg v0.3.0
[INFO] [stderr]    Compiling plotters v0.3.1
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling criterion-plot v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling criterion v0.3.4
[INFO] [stderr]    Compiling pushgen v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 25.17s
[INFO] running `Command { std: "docker" "inspect" "53be05f005ff956fee1e913f094c871d25b8d0b38547ce1fea68f698fa491131", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "53be05f005ff956fee1e913f094c871d25b8d0b38547ce1fea68f698fa491131", kill_on_drop: false }`
[INFO] [stdout] 53be05f005ff956fee1e913f094c871d25b8d0b38547ce1fea68f698fa491131
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d08c9f55641bfd3c96726ecb3923116c5255a65b5bb94530f25e89d79811744f
[INFO] running `Command { std: "docker" "start" "-a" "d08c9f55641bfd3c96726ecb3923116c5255a65b5bb94530f25e89d79811744f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pushgen-490df1fdf04d2d34)
[INFO] [stdout] 
[INFO] [stdout] running 70 tests
[INFO] [stdout] test generators::slice_generator::tests::try_advance_available ... ok
[INFO] [stdout] test generators::slice_generator::tests::try_advance_inside ... ok
[INFO] [stdout] test generators::slice_generator::tests::try_advance_more_than_available ... ok
[INFO] [stdout] test structs::chain::tests::basic_chain ... ok
[INFO] [stdout] test structs::chain::tests::spuriously_stopping_first ... ok
[INFO] [stdout] test structs::chain::tests::spuriously_stopping_second ... ok
[INFO] [stdout] test structs::cloned::tests::spuriously_stopping ... ok
[INFO] [stdout] test generators::slice_generator::tests::try_advance ... ok
[INFO] [stdout] test structs::dedup::tests::dedup_all_duplicate ... ok
[INFO] [stdout] test structs::copied::tests::spuriously_stopping ... ok
[INFO] [stdout] test structs::dedup::tests::dedup_nonduplicate ... ok
[INFO] [stdout] test structs::dedup::tests::dedup_stopping_source ... ok
[INFO] [stdout] test structs::enumerate::tests::advance ... ok
[INFO] [stdout] test structs::enumerate::tests::enumerate ... ok
[INFO] [stdout] test structs::dedup::tests::dedup_some_duplicate ... ok
[INFO] [stdout] test structs::enumerate::tests::spuriously_stopping_advance ... ok
[INFO] [stdout] test structs::filter::tests::spuriously_stopping ... ok
[INFO] [stdout] test structs::filter_map::tests::spuriously_stopping ... ok
[INFO] [stdout] test structs::flatten::tests::slice_flatten ... ok
[INFO] [stdout] test structs::flatten::tests::only_stopping_generators ... ok
[INFO] [stdout] test structs::flatten::tests::stopping_generator ... ok
[INFO] [stdout] test structs::inspect::tests::inspect ... ok
[INFO] [stdout] test structs::flatten::tests::stopping_nested_generator ... ok
[INFO] [stdout] test structs::iterator::tests::fold ... ok
[INFO] [stdout] test structs::iterator::tests::iter_over_slice ... ok
[INFO] [stdout] test structs::flatten::tests::vector_flatten ... ok
[INFO] [stdout] test structs::map::tests::spuriously_stopping ... ok
[INFO] [stdout] test structs::skip::tests::skip ... ok
[INFO] [stdout] test structs::skip::tests::skip_while ... ok
[INFO] [stdout] test structs::skip::tests::spuriously_stopping_skip ... ok
[INFO] [stdout] test structs::skip::tests::try_advance ... ok
[INFO] [stdout] test structs::skip::tests::spuriously_stopping_skip_while ... ok
[INFO] [stdout] test structs::skip::tests::try_advance_max ... ok
[INFO] [stdout] test structs::skip::tests::try_advance_stopping ... ok
[INFO] [stdout] test structs::skip::tests::try_advance_stopping_skip_region ... ok
[INFO] [stdout] test structs::step_by::tests::basic_test ... ok
[INFO] [stdout] test structs::step_by::tests::spuriously_multi_stopping ... ok
[INFO] [stdout] test structs::step_by::tests::spuriously_stopping ... ok
[INFO] [stdout] test structs::step_by::tests::step_next ... ok
[INFO] [stdout] test structs::step_by::tests::step_one ... ok
[INFO] [stdout] test structs::take::tests::spuriously_stopping_take ... ok
[INFO] [stdout] test structs::take::tests::spuriously_stopping_take_while ... ok
[INFO] [stdout] test structs::zip::tests::shorter_left_side ... ok
[INFO] [stdout] test structs::take::tests::take_restart ... ok
[INFO] [stdout] test structs::zip::tests::shorter_right_side ... ok
[INFO] [stdout] test traits::generator_ext::tests::collect_string ... ok
[INFO] [stdout] test traits::generator_ext::tests::collect_vec ... ok
[INFO] [stdout] test traits::generator_ext::tests::empty_reduce ... ok
[INFO] [stdout] test traits::generator_ext::tests::double_stop_try_reduce ... ok
[INFO] [stdout] test traits::generator_ext::tests::empty_try_reduce ... ok
[INFO] [stdout] test structs::take::tests::take_while ... ok
[INFO] [stdout] test traits::generator_ext::tests::empty_any ... ok
[INFO] [stdout] test traits::generator_ext::tests::single_element_reduce ... ok
[INFO] [stdout] test traits::generator_ext::tests::for_each_stopped ... ok
[INFO] [stdout] test structs::take::tests::take_while_with_restart ... ok
[INFO] [stdout] test traits::generator_ext::tests::shortcircuit_all ... ok
[INFO] [stdout] test structs::zip::tests::same_length ... ok
[INFO] [stdout] test traits::generator_ext::tests::empty_all ... ok
[INFO] [stdout] test traits::generator_ext::tests::basic_all ... ok
[INFO] [stdout] test traits::generator_ext::tests::single_element_try_reduce ... ok
[INFO] [stdout] test traits::generator_ext::tests::spuriously_stopping_try_fold ... ok
[INFO] [stdout] test traits::accum::tests::sum ... ok
[INFO] [stdout] test traits::accum::tests::product ... ok
[INFO] [stdout] test traits::generator_ext::tests::two_element_try_reduce ... ok
[INFO] [stdout] test structs::zip::tests::spuriously_stopped_right ... ok
[INFO] [stdout] test structs::zip::tests::spuriously_stopped_left ... ok
[INFO] [stdout] test traits::generator_ext::tests::two_element_reduce ... ok
[INFO] [stdout] test traits::generator_ext::tests::stop_at_start_try_reduce ... ok
[INFO] [stdout] test structs::take::tests::take ... ok
[INFO] [stdout] test structs::step_by::tests::zero_step_size - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 70 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pushgen
[INFO] [stdout] 
[INFO] [stdout] running 63 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 pushgen --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-947091ac0c051a26.rlib --extern either=/opt/rustwide/target/debug/deps/libeither-86164c251fc3f461.rlib --extern itertools=/opt/rustwide/target/debug/deps/libitertools-c0ea5b4b1d6f2c02.rlib --extern pushgen=/opt/rustwide/target/debug/deps/libpushgen-8b1132cb50315bc9.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="std"' --error-format human` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "d08c9f55641bfd3c96726ecb3923116c5255a65b5bb94530f25e89d79811744f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d08c9f55641bfd3c96726ecb3923116c5255a65b5bb94530f25e89d79811744f", kill_on_drop: false }`
[INFO] [stdout] d08c9f55641bfd3c96726ecb3923116c5255a65b5bb94530f25e89d79811744f