[INFO] fetching crate streaming-iterator 0.1.5...
[INFO] testing streaming-iterator-0.1.5 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate streaming-iterator 0.1.5 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate streaming-iterator 0.1.5 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 streaming-iterator 0.1.5
[INFO] finished tweaking crates.io crate streaming-iterator 0.1.5
[INFO] tweaked toml for crates.io crate streaming-iterator 0.1.5 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] [stdout] bbcbf20958e27946abf24785eb6d3b7b108955c8504cdda20bd6d8758e14f0d6
[INFO] running `Command { std: "docker" "start" "-a" "bbcbf20958e27946abf24785eb6d3b7b108955c8504cdda20bd6d8758e14f0d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbcbf20958e27946abf24785eb6d3b7b108955c8504cdda20bd6d8758e14f0d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbcbf20958e27946abf24785eb6d3b7b108955c8504cdda20bd6d8758e14f0d6", kill_on_drop: false }`
[INFO] [stdout] bbcbf20958e27946abf24785eb6d3b7b108955c8504cdda20bd6d8758e14f0d6
[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] 855d050b70053fe237d900e2e94595f624040a8877188e7f47e15093d8251eb4
[INFO] running `Command { std: "docker" "start" "-a" "855d050b70053fe237d900e2e94595f624040a8877188e7f47e15093d8251eb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling streaming-iterator v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "855d050b70053fe237d900e2e94595f624040a8877188e7f47e15093d8251eb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "855d050b70053fe237d900e2e94595f624040a8877188e7f47e15093d8251eb4", kill_on_drop: false }`
[INFO] [stdout] 855d050b70053fe237d900e2e94595f624040a8877188e7f47e15093d8251eb4
[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] cd5ab736a5087c4c97fa4548425fa90b578d6e7d8b5ddfc64d66630b3d5869f6
[INFO] running `Command { std: "docker" "start" "-a" "cd5ab736a5087c4c97fa4548425fa90b578d6e7d8b5ddfc64d66630b3d5869f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling streaming-iterator v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/lib.rs:2099:28
[INFO] [stdout]      |
[INFO] [stdout] 2099 |     fn _is_object_safe(_: &StreamingIterator<Item = ()>) {}
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StreamingIterator<Item = ()>`
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.39s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cd5ab736a5087c4c97fa4548425fa90b578d6e7d8b5ddfc64d66630b3d5869f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd5ab736a5087c4c97fa4548425fa90b578d6e7d8b5ddfc64d66630b3d5869f6", kill_on_drop: false }`
[INFO] [stdout] cd5ab736a5087c4c97fa4548425fa90b578d6e7d8b5ddfc64d66630b3d5869f6
[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] 16ab5dc76a587964798fd296f653e41f3c2ef5d18a6c77ba65830e840e2a7cde
[INFO] running `Command { std: "docker" "start" "-a" "16ab5dc76a587964798fd296f653e41f3c2ef5d18a6c77ba65830e840e2a7cde", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/lib.rs:2099:28
[INFO] [stderr]      |
[INFO] [stderr] 2099 |     fn _is_object_safe(_: &StreamingIterator<Item = ()>) {}
[INFO] [stderr]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StreamingIterator<Item = ()>`
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] 
[INFO] [stderr] warning: `streaming-iterator` (lib test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/streaming_iterator-f42db81ce628a9be)
[INFO] [stdout] 
[INFO] [stdout] running 31 tests
[INFO] [stderr]    Doc-tests streaming-iterator
[INFO] [stdout] test test::empty_iterator ... ok
[INFO] [stdout] test test::filter_map ... ok
[INFO] [stdout] test test::filter ... ok
[INFO] [stdout] test test::cloned ... ok
[INFO] [stdout] test test::any ... ok
[INFO] [stdout] test test::count ... ok
[INFO] [stdout] test test::all ... ok
[INFO] [stdout] test test::fold ... ok
[INFO] [stdout] test test::for_each_rev ... ok
[INFO] [stdout] test test::filter_map_deref ... ok
[INFO] [stdout] test test::inspect ... ok
[INFO] [stdout] test test::map_deref ... ok
[INFO] [stdout] test test::fuse ... ok
[INFO] [stdout] test test::map_ref ... ok
[INFO] [stdout] test test::nth ... ok
[INFO] [stdout] test test::for_each ... ok
[INFO] [stdout] test test::rfold ... ok
[INFO] [stdout] test test::map ... ok
[INFO] [stdout] test test::rev ... ok
[INFO] [stdout] test test::skip_while ... ok
[INFO] [stdout] test test::take ... ok
[INFO] [stdout] test test::take_while ... ok
[INFO] [stdout] test test::test_chain ... ok
[INFO] [stdout] test test::skip ... ok
[INFO] [stdout] test test::position ... ok
[INFO] [stdout] test test::find ... ok
[INFO] [stdout] test test::test_chain_back ... ok
[INFO] [stdout] test test::test_chain_mixed ... ok
[INFO] [stdout] test test::test_convert ... ok
[INFO] [stdout] test test::flat_map ... ok
[INFO] [stdout] test test::test_convert_ref ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 31 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - (line 12) ... ignored
[INFO] [stdout] test src/lib.rs - (line 22) - compile ... ok
[INFO] [stdout] test src/lib.rs - convert (line 512) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.39s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "16ab5dc76a587964798fd296f653e41f3c2ef5d18a6c77ba65830e840e2a7cde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16ab5dc76a587964798fd296f653e41f3c2ef5d18a6c77ba65830e840e2a7cde", kill_on_drop: false }`
[INFO] [stdout] 16ab5dc76a587964798fd296f653e41f3c2ef5d18a6c77ba65830e840e2a7cde