[INFO] fetching crate tk-pool 0.5.3...
[INFO] checking tk-pool-0.5.3 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] extracting crate tk-pool 0.5.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate tk-pool 0.5.3 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tk-pool 0.5.3
[INFO] finished tweaking crates.io crate tk-pool 0.5.3
[INFO] tweaked toml for crates.io crate tk-pool 0.5.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "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] 530081df938ee20bc011aba73e2250de078cbdbee270eb3ca14d896a40bd0e4d
[INFO] running `Command { std: "docker" "start" "-a" "530081df938ee20bc011aba73e2250de078cbdbee270eb3ca14d896a40bd0e4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "530081df938ee20bc011aba73e2250de078cbdbee270eb3ca14d896a40bd0e4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "530081df938ee20bc011aba73e2250de078cbdbee270eb3ca14d896a40bd0e4d", kill_on_drop: false }`
[INFO] [stdout] 530081df938ee20bc011aba73e2250de078cbdbee270eb3ca14d896a40bd0e4d
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--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] 85c05d32f0fa83b5fdcc3f70b296c6674a478e4c7c8e8d0d19e33c3e0a57550a
[INFO] running `Command { std: "docker" "start" "-a" "85c05d32f0fa83b5fdcc3f70b296c6674a478e4c7c8e8d0d19e33c3e0a57550a", kill_on_drop: false }`
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking netbuf v0.4.1
[INFO] [stderr]     Checking sha1 v0.4.0
[INFO] [stderr]     Checking async-slot v0.1.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking abstract-ns v0.4.3
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tk-bufstream v0.3.0
[INFO] [stderr]     Checking ns-std-threaded v0.3.0
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]     Checking ns-router v0.1.6
[INFO] [stderr]     Checking tk-http v0.3.9
[INFO] [stderr]     Checking tk-pool v0.5.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/queue.rs:244:32
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn cause(&self) -> Option<&::std::error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/uniform/pool.rs:22:51
[INFO] [stdout]    |
[INFO] [stdout] 22 |       pub(in uniform) futures: FuturesUnordered<Box<Future<
[INFO] [stdout]    |  ___________________________________________________^
[INFO] [stdout] 23 | |                         Item=FutureOk<<C::Future as Future>::Item>,
[INFO] [stdout] 24 | |                         Error=FutureErr<E::ConnectionError, E::SinkError>>>>,
[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 the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub(in uniform) futures: FuturesUnordered<Box<dyn Future<
[INFO] [stdout] 23 |                         Item=FutureOk<<C::Future as Future>::Item>,
[INFO] [stdout] 24 |                         Error=FutureErr<E::ConnectionError, E::SinkError>>>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/queue.rs:244:32
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn cause(&self) -> Option<&::std::error::Error> {
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn (::std::error::Error)`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/uniform/pool.rs:22:51
[INFO] [stdout]    |
[INFO] [stdout] 22 |       pub(in uniform) futures: FuturesUnordered<Box<Future<
[INFO] [stdout]    |  ___________________________________________________^
[INFO] [stdout] 23 | |                         Item=FutureOk<<C::Future as Future>::Item>,
[INFO] [stdout] 24 | |                         Error=FutureErr<E::ConnectionError, E::SinkError>>>>,
[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 the 2021 edition!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub(in uniform) futures: FuturesUnordered<Box<dyn Future<
[INFO] [stdout] 23 |                         Item=FutureOk<<C::Future as Future>::Item>,
[INFO] [stdout] 24 |                         Error=FutureErr<E::ConnectionError, E::SinkError>>>>,
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.22s
[INFO] running `Command { std: "docker" "inspect" "85c05d32f0fa83b5fdcc3f70b296c6674a478e4c7c8e8d0d19e33c3e0a57550a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85c05d32f0fa83b5fdcc3f70b296c6674a478e4c7c8e8d0d19e33c3e0a57550a", kill_on_drop: false }`
[INFO] [stdout] 85c05d32f0fa83b5fdcc3f70b296c6674a478e4c7c8e8d0d19e33c3e0a57550a