[INFO] cloning repository https://github.com/stsydow/parallel-stream-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/stsydow/parallel-stream-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstsydow%2Fparallel-stream-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstsydow%2Fparallel-stream-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6c83938a555178b262b0e79c1b5be25732040d2
[INFO] checking stsydow/parallel-stream-rs against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstsydow%2Fparallel-stream-rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/stsydow/parallel-stream-rs on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/stsydow/parallel-stream-rs
[INFO] finished tweaking git repo https://github.com/stsydow/parallel-stream-rs
[INFO] tweaked toml for git repo https://github.com/stsydow/parallel-stream-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/stsydow/parallel-stream-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 268dc861e04c63c32af047f67eb218d70de77978c4141ef6b2c4bd5446090529
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[INFO] running `Command { std: "docker" "inspect" "268dc861e04c63c32af047f67eb218d70de77978c4141ef6b2c4bd5446090529", kill_on_drop: false }`
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[INFO] [stdout] 268dc861e04c63c32af047f67eb218d70de77978c4141ef6b2c4bd5446090529
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "52993920968c64dd863f03997fbb0016b8cd69117f964dea723d1a5e61593ab8", kill_on_drop: false }`
[INFO] [stderr] warning: profiles for the non root package will be ignored, specify profiles at the workspace root:
[INFO] [stderr] package:   /opt/rustwide/workdir/rustwp/Cargo.toml
[INFO] [stderr] workspace: /opt/rustwide/workdir/Cargo.toml
[INFO] [stderr]    Compiling autocfg v1.0.1
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[INFO] [stderr]     Checking futures-core v0.3.8
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[INFO] [stderr]    Compiling time-macros-impl v0.1.1
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[INFO] [stderr]     Checking time-macros v0.1.1
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[INFO] [stderr]     Checking rustwp v0.1.0 (/opt/rustwide/workdir/rustwp)
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[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking parallel-stream v0.3.2 (/opt/rustwide/workdir/parallel-stream)
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[INFO] [stderr]     Checking benches v0.0.0 (/opt/rustwide/workdir/benchmarks)
[INFO] [stdout] warning: unused import: `executors::FuturesExecutor`
[INFO] [stdout]    --> benchmarks/channel.rs:280:9
[INFO] [stdout]     |
[INFO] [stdout] 280 |     use executors::FuturesExecutor;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]    --> benchmarks/channel.rs:282:9
[INFO] [stdout]     |
[INFO] [stdout] 282 |     use futures::executor::block_on;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> benchmarks/fs.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::runtime::{self, Runtime};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::executor::block_on`
[INFO] [stdout]  --> benchmarks/fs.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use futures::executor::block_on;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `block_on` is imported redundantly
[INFO] [stdout]   --> benchmarks/fs.rs:93:9
[INFO] [stdout]    |
[INFO] [stdout] 3  | use futures::executor::block_on;
[INFO] [stdout]    |     --------------------------- the item `block_on` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 93 |     use futures::executor::block_on;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `time_stream`
[INFO] [stdout]   --> benchmarks/bench.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn time_stream() -> impl Stream<Item=Instant> {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `async_stream_latency`
[INFO] [stdout]    --> benchmarks/bench.rs:189:4
[INFO] [stdout]     |
[INFO] [stdout] 189 | fn async_stream_latency(_b: &mut Bencher) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 31.83s
[INFO] running `Command { std: "docker" "inspect" "52993920968c64dd863f03997fbb0016b8cd69117f964dea723d1a5e61593ab8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52993920968c64dd863f03997fbb0016b8cd69117f964dea723d1a5e61593ab8", kill_on_drop: false }`
[INFO] [stdout] 52993920968c64dd863f03997fbb0016b8cd69117f964dea723d1a5e61593ab8