[INFO] fetching crate futures-poll-log 1.0.1...
[INFO] testing futures-poll-log-1.0.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate futures-poll-log 1.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate futures-poll-log 1.0.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-poll-log 1.0.1
[INFO] finished tweaking crates.io crate futures-poll-log 1.0.1
[INFO] tweaked toml for crates.io crate futures-poll-log 1.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] 02174b6e9e889fd577df599654b99a9be0d2b9e358aa9970927e8709070a7270
[INFO] running `Command { std: "docker" "start" "-a" "02174b6e9e889fd577df599654b99a9be0d2b9e358aa9970927e8709070a7270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02174b6e9e889fd577df599654b99a9be0d2b9e358aa9970927e8709070a7270", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02174b6e9e889fd577df599654b99a9be0d2b9e358aa9970927e8709070a7270", kill_on_drop: false }`
[INFO] [stdout] 02174b6e9e889fd577df599654b99a9be0d2b9e358aa9970927e8709070a7270
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac0b8dd648394a6ffe20b8b647089ec5016b0178ff3b86a74164da8d5d327f29
[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" "ac0b8dd648394a6ffe20b8b647089ec5016b0178ff3b86a74164da8d5d327f29", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-poll-log v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "ac0b8dd648394a6ffe20b8b647089ec5016b0178ff3b86a74164da8d5d327f29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac0b8dd648394a6ffe20b8b647089ec5016b0178ff3b86a74164da8d5d327f29", kill_on_drop: false }`
[INFO] [stdout] ac0b8dd648394a6ffe20b8b647089ec5016b0178ff3b86a74164da8d5d327f29
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] c5d36ad54ecbd63edc09ff4ef401fc1c487f1ac7fa57d36f10856ac48f479239
[INFO] running `Command { std: "docker" "start" "-a" "c5d36ad54ecbd63edc09ff4ef401fc1c487f1ac7fa57d36f10856ac48f479239", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-poll-log v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]     --> examples/simple_future.rs:18:10
[INFO] [stdout]      |
[INFO] [stdout] 18   |         .inspect("immeditate future")
[INFO] [stdout]      |          ^^^^^^^ multiple `inspect` found
[INFO] [stdout]      |
[INFO] [stdout]      = note: candidate #1 is defined in an impl of the trait `futures::Future` for the type `Finished<T, E>`
[INFO] [stdout]      = note: candidate #2 is defined in an impl of the trait `LoggingExt` for the type `F`
[INFO] [stdout] note: candidate #3 is defined in the trait `Iterator`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]      |
[INFO] [stdout] 17   |     let _: Result<i32, _> = futures::Future::inspect(futures::future::ok(3), "immeditate future")
[INFO] [stdout]      |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]      |
[INFO] [stdout] 17   |     let _: Result<i32, _> = LoggingExt::inspect(futures::future::ok(3), "immeditate future")
[INFO] [stdout]      |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] help: disambiguate the associated function for candidate #3
[INFO] [stdout]      |
[INFO] [stdout] 17   |     let _: Result<i32, _> = Iterator::inspect(futures::future::ok(3), "immeditate future")
[INFO] [stdout]      |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures_poll_log::LoggingExt`
[INFO] [stdout]  --> examples/simple_future.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use futures_poll_log::LoggingExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::Future`
[INFO] [stdout]  --> examples/simple_future.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use futures::Future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-poll-log`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c5d36ad54ecbd63edc09ff4ef401fc1c487f1ac7fa57d36f10856ac48f479239", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5d36ad54ecbd63edc09ff4ef401fc1c487f1ac7fa57d36f10856ac48f479239", kill_on_drop: false }`
[INFO] [stdout] c5d36ad54ecbd63edc09ff4ef401fc1c487f1ac7fa57d36f10856ac48f479239