[INFO] fetching crate turbulence 0.3.0...
[INFO] checking turbulence-0.3.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate turbulence 0.3.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate turbulence 0.3.0 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 crates.io crate turbulence 0.3.0
[INFO] finished tweaking crates.io crate turbulence 0.3.0
[INFO] tweaked toml for crates.io crate turbulence 0.3.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] [stdout] d1a3fade74c842363544a7e9caaa99897d1cad19dd13ba8089ac717c563370d5
[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" "d1a3fade74c842363544a7e9caaa99897d1cad19dd13ba8089ac717c563370d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1a3fade74c842363544a7e9caaa99897d1cad19dd13ba8089ac717c563370d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1a3fade74c842363544a7e9caaa99897d1cad19dd13ba8089ac717c563370d5", kill_on_drop: false }`
[INFO] [stdout] d1a3fade74c842363544a7e9caaa99897d1cad19dd13ba8089ac717c563370d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] bbb7682bc5e608130f5d1e8b3aad13b8f3367463f0ea50045900fec8ce36f07b
[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" "bbb7682bc5e608130f5d1e8b3aad13b8f3367463f0ea50045900fec8ce36f07b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking futures-task v0.3.8
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]     Checking thiserror v1.0.23
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking serde v1.0.118
[INFO] [stderr]     Checking futures-executor v0.3.8
[INFO] [stderr]     Checking futures v0.3.8
[INFO] [stderr]     Checking bincode v1.3.1
[INFO] [stderr]     Checking turbulence v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `flush`
[INFO] [stdout]    --> src/message_channels.rs:477:29
[INFO] [stdout]     |
[INFO] [stdout] 477 | ...                   flush = flush_receiver.wait().fuse() => Next::Flush,
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_flush`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flush`
[INFO] [stdout]    --> src/message_channels.rs:523:29
[INFO] [stdout]     |
[INFO] [stdout] 523 | ...                   flush = flush_receiver.wait().fuse() => Next::Flush,
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_flush`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flush`
[INFO] [stdout]    --> src/message_channels.rs:569:29
[INFO] [stdout]     |
[INFO] [stdout] 569 | ...                   flush = flush_receiver.wait().fuse() => Next::Flush,
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_flush`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flush`
[INFO] [stdout]    --> src/message_channels.rs:477:29
[INFO] [stdout]     |
[INFO] [stdout] 477 | ...                   flush = flush_receiver.wait().fuse() => Next::Flush,
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_flush`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flush`
[INFO] [stdout]    --> src/message_channels.rs:523:29
[INFO] [stdout]     |
[INFO] [stdout] 523 | ...                   flush = flush_receiver.wait().fuse() => Next::Flush,
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_flush`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `flush`
[INFO] [stdout]    --> src/message_channels.rs:569:29
[INFO] [stdout]     |
[INFO] [stdout] 569 | ...                   flush = flush_receiver.wait().fuse() => Next::Flush,
[INFO] [stdout]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_flush`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.52s
[INFO] running `Command { std: "docker" "inspect" "bbb7682bc5e608130f5d1e8b3aad13b8f3367463f0ea50045900fec8ce36f07b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbb7682bc5e608130f5d1e8b3aad13b8f3367463f0ea50045900fec8ce36f07b", kill_on_drop: false }`
[INFO] [stdout] bbb7682bc5e608130f5d1e8b3aad13b8f3367463f0ea50045900fec8ce36f07b