[INFO] fetching crate stream-kmerge 0.2.0...
[INFO] testing stream-kmerge-0.2.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate stream-kmerge 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate stream-kmerge 0.2.0
[INFO] finished tweaking crates.io crate stream-kmerge 0.2.0
[INFO] tweaked toml for crates.io crate stream-kmerge 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stream-kmerge 0.2.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 23 packages to latest compatible versions
[INFO] [stderr]       Adding binary-heap-plus v0.4.1 (available: v0.5.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded binary-heap-plus v0.4.1
[INFO] [stderr]   Downloaded tokio-stream v0.1.18
[INFO] [stderr]   Downloaded doc-comment v0.3.4
[INFO] [stderr]   Downloaded tokio-macros v2.7.0
[INFO] [stderr]   Downloaded tokio-test v0.4.5
[INFO] [stderr]   Downloaded tokio v1.52.1
[INFO] [stderr]   Downloaded compare v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ac0e0ae4ef52e3116232be8aca49cbacd75f58730e2df28594130447e0ef0a1
[INFO] running `Command { std: "docker" "start" "-a" "6ac0e0ae4ef52e3116232be8aca49cbacd75f58730e2df28594130447e0ef0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ac0e0ae4ef52e3116232be8aca49cbacd75f58730e2df28594130447e0ef0a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ac0e0ae4ef52e3116232be8aca49cbacd75f58730e2df28594130447e0ef0a1", kill_on_drop: false }`
[INFO] [stdout] 6ac0e0ae4ef52e3116232be8aca49cbacd75f58730e2df28594130447e0ef0a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4a5d5c864026a5589bafff79f02d920b0ed1d19032656885427e596c225b7e8
[INFO] running `Command { std: "docker" "start" "-a" "f4a5d5c864026a5589bafff79f02d920b0ed1d19032656885427e596c225b7e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling futures-sink v0.3.32
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling memchr v2.8.0
[INFO] [stderr]    Compiling futures-io v0.3.32
[INFO] [stderr]    Compiling futures-task v0.3.32
[INFO] [stderr]    Compiling pin-project-lite v0.2.17
[INFO] [stderr]    Compiling slab v0.4.12
[INFO] [stderr]    Compiling compare v0.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling binary-heap-plus v0.4.1
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling futures-executor v0.3.32
[INFO] [stderr]    Compiling futures v0.3.32
[INFO] [stderr]    Compiling stream-kmerge v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on type aliases
[INFO] [stdout]   --> src/lib.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | #[must_use = "stream adaptors are lazy and do nothing unless consumed"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, functions, and traits
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.50s
[INFO] running `Command { std: "docker" "inspect" "f4a5d5c864026a5589bafff79f02d920b0ed1d19032656885427e596c225b7e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4a5d5c864026a5589bafff79f02d920b0ed1d19032656885427e596c225b7e8", kill_on_drop: false }`
[INFO] [stdout] f4a5d5c864026a5589bafff79f02d920b0ed1d19032656885427e596c225b7e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e14c032826daf34b34dc7cc8c5ab5bac0271981b6e41a7da3706467eb0e01bf5
[INFO] running `Command { std: "docker" "start" "-a" "e14c032826daf34b34dc7cc8c5ab5bac0271981b6e41a7da3706467eb0e01bf5", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.32
[INFO] [stderr]    Compiling doc-comment v0.3.4
[INFO] [stderr]    Compiling tokio-macros v2.7.0
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling tokio v1.52.1
[INFO] [stderr]    Compiling tokio-stream v0.1.18
[INFO] [stderr]    Compiling futures-executor v0.3.32
[INFO] [stderr]    Compiling tokio-test v0.4.5
[INFO] [stderr]    Compiling futures v0.3.32
[INFO] [stderr]    Compiling stream-kmerge v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on type aliases
[INFO] [stdout]   --> src/lib.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | #[must_use = "stream adaptors are lazy and do nothing unless consumed"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, functions, and traits
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on type aliases
[INFO] [stdout]   --> src/lib.rs:48:1
[INFO] [stdout]    |
[INFO] [stdout] 48 | #[must_use = "stream adaptors are lazy and do nothing unless consumed"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = help: `#[must_use]` can be applied to data types, functions, and traits
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.55s
[INFO] running `Command { std: "docker" "inspect" "e14c032826daf34b34dc7cc8c5ab5bac0271981b6e41a7da3706467eb0e01bf5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e14c032826daf34b34dc7cc8c5ab5bac0271981b6e41a7da3706467eb0e01bf5", kill_on_drop: false }`
[INFO] [stdout] e14c032826daf34b34dc7cc8c5ab5bac0271981b6e41a7da3706467eb0e01bf5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b4525121363b48c4a85ded0ebaf82e8b40f29eb742876cc337cef16fb6080b2a
[INFO] running `Command { std: "docker" "start" "-a" "b4525121363b48c4a85ded0ebaf82e8b40f29eb742876cc337cef16fb6080b2a", kill_on_drop: false }`
[INFO] [stderr] warning: `#[must_use]` attribute cannot be used on type aliases
[INFO] [stderr]   --> src/lib.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | #[must_use = "stream adaptors are lazy and do nothing unless consumed"]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = help: `#[must_use]` can be applied to data types, functions, and traits
[INFO] [stderr]    = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `stream-kmerge` (lib) generated 1 warning (run `cargo fix --lib -p stream-kmerge` to apply 1 suggestion)
[INFO] [stderr] warning: `stream-kmerge` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/stream_kmerge-7c1ad721a333d05b)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test test::by ... ok
[INFO] [stdout] test test::concurrent_initialization ... ok
[INFO] [stdout] test test::by_key ... ok
[INFO] [stdout] test test::sync ... ok
[INFO] [stdout] test test::kmerge_async ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests stream_kmerge
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - (line 379) ... ok
[INFO] [stdout] test src/lib.rs - kmerge_by_key (line 141) ... ok
[INFO] [stdout] test src/lib.rs - kmerge (line 95) ... ok
[INFO] [stdout] test src/lib.rs - (line 385) ... ok
[INFO] [stdout] test src/lib.rs - kmerge_by (line 118) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.96s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b4525121363b48c4a85ded0ebaf82e8b40f29eb742876cc337cef16fb6080b2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4525121363b48c4a85ded0ebaf82e8b40f29eb742876cc337cef16fb6080b2a", kill_on_drop: false }`
[INFO] [stdout] b4525121363b48c4a85ded0ebaf82e8b40f29eb742876cc337cef16fb6080b2a