[INFO] fetching crate peekmore 1.0.0...
[INFO] testing peekmore-1.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate peekmore 1.0.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate peekmore 1.0.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate peekmore 1.0.0
[INFO] finished tweaking crates.io crate peekmore 1.0.0
[INFO] tweaked toml for crates.io crate peekmore 1.0.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+beta-2021-09-08" "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] 97dfe7deeaeb7bf68dc4cd92453e5247421b7570db84a72c263bae9b11f4e161
[INFO] running `Command { std: "docker" "start" "-a" "97dfe7deeaeb7bf68dc4cd92453e5247421b7570db84a72c263bae9b11f4e161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97dfe7deeaeb7bf68dc4cd92453e5247421b7570db84a72c263bae9b11f4e161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97dfe7deeaeb7bf68dc4cd92453e5247421b7570db84a72c263bae9b11f4e161", kill_on_drop: false }`
[INFO] [stdout] 97dfe7deeaeb7bf68dc4cd92453e5247421b7570db84a72c263bae9b11f4e161
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d698a0dfdceedb90313063acb273fcaee094e5fc512adcf7925936eb042a19e3
[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" "d698a0dfdceedb90313063acb273fcaee094e5fc512adcf7925936eb042a19e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling peekmore v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "d698a0dfdceedb90313063acb273fcaee094e5fc512adcf7925936eb042a19e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d698a0dfdceedb90313063acb273fcaee094e5fc512adcf7925936eb042a19e3", kill_on_drop: false }`
[INFO] [stdout] d698a0dfdceedb90313063acb273fcaee094e5fc512adcf7925936eb042a19e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0f2a9a2d46331fc1a88c8d9c12c4050c4f8b415ad27ae493d8999f8f0b95a02
[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" "d0f2a9a2d46331fc1a88c8d9c12c4050c4f8b415ad27ae493d8999f8f0b95a02", kill_on_drop: false }`
[INFO] [stderr]    Compiling peekmore v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "d0f2a9a2d46331fc1a88c8d9c12c4050c4f8b415ad27ae493d8999f8f0b95a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0f2a9a2d46331fc1a88c8d9c12c4050c4f8b415ad27ae493d8999f8f0b95a02", kill_on_drop: false }`
[INFO] [stdout] d0f2a9a2d46331fc1a88c8d9c12c4050c4f8b415ad27ae493d8999f8f0b95a02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d09ca3fae620026a6d8ecf0dd90600268d70d6ab9c33645369b1a14cee51b4fb
[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" "d09ca3fae620026a6d8ecf0dd90600268d70d6ab9c33645369b1a14cee51b4fb", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/peekmore-5dcb11b7dd89743d)
[INFO] [stdout] 
[INFO] [stdout] running 54 tests
[INFO] [stdout] test tests::check_advance_chain ... ok
[INFO] [stdout] test tests::check_advance_separately ... ok
[INFO] [stdout] test tests::check_move_backward ... ok
[INFO] [stdout] test tests::check_move_forward ... ok
[INFO] [stdout] test tests::check_move_forward_while ... ok
[INFO] [stdout] test tests::check_move_nth_empty ... ok
[INFO] [stdout] test tests::check_move_previous ... ok
[INFO] [stdout] test tests::check_peek_backward ... ok
[INFO] [stdout] test tests::check_peek_backward_beyond_consumed_verify_cursor_position ... ok
[INFO] [stdout] test tests::check_peek_backward_or_first_beyond_consumed_verify_cursor_position ... ok
[INFO] [stdout] test tests::check_peek_backward_or_first_empty ... ok
[INFO] [stdout] test tests::check_peek_forward ... ok
[INFO] [stdout] test tests::check_peek_nth ... ok
[INFO] [stdout] test tests::check_peek_nth_empty ... ok
[INFO] [stdout] test tests::check_peek_window_moves_with_consume ... ok
[INFO] [stdout] test tests::empty ... ok
[INFO] [stdout] test tests::peek_amount_empty ... ok
[INFO] [stdout] test tests::peek_amount_from_start_bigger_than_input_len ... ok
[INFO] [stdout] test tests::peek_amount_from_start_eq_to_input_len ... ok
[INFO] [stdout] test tests::check_move_backward_or_reset_empty ... ok
[INFO] [stdout] test tests::peek_forward_without_reassignment_advance_and_peek_combined ... ok
[INFO] [stdout] test tests::check_move_nth ... ok
[INFO] [stdout] test tests::check_move_forward_while_some ... ok
[INFO] [stdout] test tests::peek_range_from_start_bigger_than_input_len ... ok
[INFO] [stdout] test tests::peek_range_from_start_eq_to_input_len ... ok
[INFO] [stdout] test tests::peek_range_from_start_smaller_than_input_len ... ok
[INFO] [stdout] test tests::peek_range_match ... ok
[INFO] [stdout] test tests::peek_range_out_of_bounds ... ok
[INFO] [stdout] test tests::peek_amount_from_start_smaller_than_input_len ... ok
[INFO] [stdout] test tests::check_move_forward_while_empty ... ok
[INFO] [stdout] test tests::peek_amount_zero ... ok
[INFO] [stdout] test tests::peek_previous ... ok
[INFO] [stdout] test tests::peek_previous_beyond_none ... ok
[INFO] [stdout] test tests::check_move_backward_beyond_consumed_verify_cursor_position ... ok
[INFO] [stdout] test tests::peek_range_from_middle ... ok
[INFO] [stdout] test tests::check_move_backward_or_reset ... ok
[INFO] [stdout] test tests::peek_amount_match ... ok
[INFO] [stdout] test tests::peek_amount_renewed_view ... ok
[INFO] [stdout] test tests::peek_forward_with_reassignment ... ok
[INFO] [stdout] test tests::peek_forward_without_reassignment_advance_and_peek_combined_and_reset_view ... ok
[INFO] [stdout] test tests::peek_forward_without_reassignment_separately_advance_and_peek ... ok
[INFO] [stdout] test tests::peek_range_empty ... ok
[INFO] [stdout] test tests::check_move_backward_or_reset_beyond_consumed_verify_cursor_position ... ok
[INFO] [stdout] test tests::truncate_iterator_to_cursor_is_noop_when_queue_is_empty_from_iteration ... ok
[INFO] [stdout] test tests::truncate_iterator_to_cursor_is_noop_when_queue_is_empty_from_no_peeking ... ok
[INFO] [stdout] test tests::truncate_to_iterator_on_empty_collection ... ok
[INFO] [stdout] test tests::readme_example ... ok
[INFO] [stdout] test tests::truncate_to_iterator_on_single_element_collection ... ok
[INFO] [stdout] test tests::test_with_consume ... ok
[INFO] [stdout] test tests::truncate_to_iterator_fill_queue ... ok
[INFO] [stdout] test tests::test_with_inherited_feature_count ... ok
[INFO] [stdout] test tests::test_with_consume_and_reset ... ok
[INFO] [stdout] test tests::truncate_to_iterator_cursor_and_queue_equal_length ... ok
[INFO] [stdout] test tests::peek_range_panic_on_invalid_range - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 54 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.15s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests peekmore
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test src/lib.rs - PeekMoreIterator<I>::peek (line 291) ... ok
[INFO] [stdout] test src/lib.rs - PeekMoreIterator<I>::peek (line 241) ... ok
[INFO] [stdout] test src/lib.rs - PeekMoreIterator<I>::truncate_iterator_to_cursor (line 625) ... ok
[INFO] [stdout] test src/lib.rs - PeekMoreIterator<I>::peek (line 221) ... ok
[INFO] [stdout] test src/lib.rs - PeekMoreIterator<I>::peek_amount (line 730) ... ok
[INFO] [stdout] test src/lib.rs - PeekMoreIterator<I>::peek (line 203) ... ok
[INFO] [stdout] test src/lib.rs - PeekMoreIterator<I>::peek (line 349) ... ok
[INFO] [stdout] test src/lib.rs - (line 29) ... ok
[INFO] [stdout] test src/lib.rs - PeekMoreIterator<I>::peek (line 262) ... ok
[INFO] [stdout] test src/lib.rs - PeekMoreIterator<I>::peek (line 316) ... ok
[INFO] [stdout] test src/lib.rs - PeekMoreIterator<I>::peek_range (line 676) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.26s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d09ca3fae620026a6d8ecf0dd90600268d70d6ab9c33645369b1a14cee51b4fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d09ca3fae620026a6d8ecf0dd90600268d70d6ab9c33645369b1a14cee51b4fb", kill_on_drop: false }`
[INFO] [stdout] d09ca3fae620026a6d8ecf0dd90600268d70d6ab9c33645369b1a14cee51b4fb