[INFO] cloning repository https://github.com/daboross/futures-example-2019
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/daboross/futures-example-2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaboross%2Ffutures-example-2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaboross%2Ffutures-example-2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0727b32c5fc7bbf3c8670c9dfa67769f2931b430
[INFO] checking daboross/futures-example-2019 against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdaboross%2Ffutures-example-2019" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/daboross/futures-example-2019 on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/daboross/futures-example-2019
[INFO] finished tweaking git repo https://github.com/daboross/futures-example-2019
[INFO] tweaked toml for git repo https://github.com/daboross/futures-example-2019 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/daboross/futures-example-2019 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "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] 5ab33f18c25d3c3d9eeeb08b73d7a7b34705d3e5516ff53b172250a5a8e342f6
[INFO] running `Command { std: "docker" "start" "-a" "5ab33f18c25d3c3d9eeeb08b73d7a7b34705d3e5516ff53b172250a5a8e342f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ab33f18c25d3c3d9eeeb08b73d7a7b34705d3e5516ff53b172250a5a8e342f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ab33f18c25d3c3d9eeeb08b73d7a7b34705d3e5516ff53b172250a5a8e342f6", kill_on_drop: false }`
[INFO] [stdout] 5ab33f18c25d3c3d9eeeb08b73d7a7b34705d3e5516ff53b172250a5a8e342f6
[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=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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec5134451493f34d1eab1b10376169a9d2231d7eb070fd085f6c3e7981e38fe1
[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" "ec5134451493f34d1eab1b10376169a9d2231d7eb070fd085f6c3e7981e38fe1", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]     Checking lazy_static v1.3.0
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[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking fnv v1.0.6
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[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.16
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]    Compiling httparse v1.3.3
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking owning_ref v0.4.0
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[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.16
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[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
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[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.16
[INFO] [stderr]    Compiling rustc_version v0.2.3
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[INFO] [stderr]    Compiling parking_lot_core v0.4.0
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[INFO] [stderr]    Compiling openssl v0.10.22
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking tokio-threadpool v0.1.14
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.16
[INFO] [stderr]     Checking h2 v0.1.20
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.16
[INFO] [stderr]     Checking tokio v0.1.20
[INFO] [stderr]     Checking hyper v0.12.29
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking futures-example-2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Error = Box<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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 | type Error = Box<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] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_await)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `async_await` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_await)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.89s
[INFO] running `Command { std: "docker" "inspect" "ec5134451493f34d1eab1b10376169a9d2231d7eb070fd085f6c3e7981e38fe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec5134451493f34d1eab1b10376169a9d2231d7eb070fd085f6c3e7981e38fe1", kill_on_drop: false }`
[INFO] [stdout] ec5134451493f34d1eab1b10376169a9d2231d7eb070fd085f6c3e7981e38fe1