[INFO] cloning repository https://github.com/AreebSiddiqui/rust-futures
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AreebSiddiqui/rust-futures" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAreebSiddiqui%2Frust-futures", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAreebSiddiqui%2Frust-futures'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89598644e39526c039498aabdeb69eac64ef527b
[INFO] checking AreebSiddiqui/rust-futures against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAreebSiddiqui%2Frust-futures" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  79% (1110/1399)   
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Checking out files: 100% (1399/1399), done.
[INFO] validating manifest of git repo https://github.com/AreebSiddiqui/rust-futures on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AreebSiddiqui/rust-futures
[INFO] finished tweaking git repo https://github.com/AreebSiddiqui/rust-futures
[INFO] tweaked toml for git repo https://github.com/AreebSiddiqui/rust-futures written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/AreebSiddiqui/rust-futures already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] 661d16aa31556811252141ed891b69838839daf27c1102c0c8abffe0268314f0
[INFO] running `Command { std: "docker" "start" "-a" "661d16aa31556811252141ed891b69838839daf27c1102c0c8abffe0268314f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "661d16aa31556811252141ed891b69838839daf27c1102c0c8abffe0268314f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "661d16aa31556811252141ed891b69838839daf27c1102c0c8abffe0268314f0", kill_on_drop: false }`
[INFO] [stdout] 661d16aa31556811252141ed891b69838839daf27c1102c0c8abffe0268314f0
[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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a5a6a74b250eedffa328506d5b9eaf30b6b23b3c6c2bd677d8e7bb692a211338
[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" "a5a6a74b250eedffa328506d5b9eaf30b6b23b3c6c2bd677d8e7bb692a211338", kill_on_drop: false }`
[INFO] [stderr]     Checking futures v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:79:35
[INFO] [stdout]    |
[INFO] [stdout] 79 |             3 =>  Ok(Async::Ready((self.count))),
[INFO] [stdout]    |                                   ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/main.rs:79:35
[INFO] [stdout]    |
[INFO] [stdout] 79 |             3 =>  Ok(Async::Ready((self.count))),
[INFO] [stdout]    |                                   ^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "a5a6a74b250eedffa328506d5b9eaf30b6b23b3c6c2bd677d8e7bb692a211338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5a6a74b250eedffa328506d5b9eaf30b6b23b3c6c2bd677d8e7bb692a211338", kill_on_drop: false }`
[INFO] [stdout] a5a6a74b250eedffa328506d5b9eaf30b6b23b3c6c2bd677d8e7bb692a211338