[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] documenting AreebSiddiqui/rust-futures against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAreebSiddiqui%2Frust-futures" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  69% (969/1399)   
Checking out files:  70% (980/1399)   
Checking out files:  71% (994/1399)   
Checking out files:  72% (1008/1399)   
Checking out files:  73% (1022/1399)   
Checking out files:  74% (1036/1399)   
Checking out files:  75% (1050/1399)   
Checking out files:  76% (1064/1399)   
Checking out files:  77% (1078/1399)   
Checking out files:  78% (1092/1399)   
Checking out files:  79% (1106/1399)   
Checking out files:  79% (1112/1399)   
Checking out files:  80% (1120/1399)   
Checking out files:  81% (1134/1399)   
Checking out files:  81% (1138/1399)   
Checking out files:  82% (1148/1399)   
Checking out files:  82% (1161/1399)   
Checking out files:  83% (1162/1399)   
Checking out files:  83% (1167/1399)   
Checking out files:  84% (1176/1399)   
Checking out files:  85% (1190/1399)   
Checking out files:  86% (1204/1399)   
Checking out files:  86% (1214/1399)   
Checking out files:  87% (1218/1399)   
Checking out files:  88% (1232/1399)   
Checking out files:  89% (1246/1399)   
Checking out files:  89% (1254/1399)   
Checking out files:  90% (1260/1399)   
Checking out files:  91% (1274/1399)   
Checking out files:  92% (1288/1399)   
Checking out files:  93% (1302/1399)   
Checking out files:  94% (1316/1399)   
Checking out files:  95% (1330/1399)   
Checking out files:  96% (1344/1399)   
Checking out files:  97% (1358/1399)   
Checking out files:  98% (1372/1399)   
Checking out files:  99% (1386/1399)   
Checking out files: 100% (1399/1399)   
Checking out files: 100% (1399/1399), done.
[INFO] validating manifest of git repo https://github.com/AreebSiddiqui/rust-futures on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "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-11/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" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "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] 4416bd443f01611fc926b0f3ab47d04ee8220caeac1e565b93a80fbb3746c3fb
[INFO] running `Command { std: "docker" "start" "-a" "4416bd443f01611fc926b0f3ab47d04ee8220caeac1e565b93a80fbb3746c3fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4416bd443f01611fc926b0f3ab47d04ee8220caeac1e565b93a80fbb3746c3fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4416bd443f01611fc926b0f3ab47d04ee8220caeac1e565b93a80fbb3746c3fb", kill_on_drop: false }`
[INFO] [stdout] 4416bd443f01611fc926b0f3ab47d04ee8220caeac1e565b93a80fbb3746c3fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "RUSTDOCFLAGS=--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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a0307ef32ea51f32490b9830f6a6051bd5e76578d348ad05f4967d4a52b6f16
[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" "3a0307ef32ea51f32490b9830f6a6051bd5e76578d348ad05f4967d4a52b6f16", kill_on_drop: false }`
[INFO] [stderr]  Documenting 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.52s
[INFO] running `Command { std: "docker" "inspect" "3a0307ef32ea51f32490b9830f6a6051bd5e76578d348ad05f4967d4a52b6f16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a0307ef32ea51f32490b9830f6a6051bd5e76578d348ad05f4967d4a52b6f16", kill_on_drop: false }`
[INFO] [stdout] 3a0307ef32ea51f32490b9830f6a6051bd5e76578d348ad05f4967d4a52b6f16