[INFO] fetching crate turbulence 0.3.0...
[INFO] checking turbulence-0.3.0 against try#81275a1445c7502a974118e0c69b795ab60be991 for pr-80243
[INFO] extracting crate turbulence 0.3.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate turbulence 0.3.0 on toolchain 81275a1445c7502a974118e0c69b795ab60be991
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "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-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded snap v1.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b28772603b15d99d529f55d579cb55c5f4a8b3dab3a79803c2d743064411a77
[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" "8b28772603b15d99d529f55d579cb55c5f4a8b3dab3a79803c2d743064411a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b28772603b15d99d529f55d579cb55c5f4a8b3dab3a79803c2d743064411a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b28772603b15d99d529f55d579cb55c5f4a8b3dab3a79803c2d743064411a77", kill_on_drop: false }`
[INFO] [stdout] 8b28772603b15d99d529f55d579cb55c5f4a8b3dab3a79803c2d743064411a77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 567118d0c851b42602400c84027ee4c7fa5f48d30d2a93120b04dddd20d870f3
[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" "567118d0c851b42602400c84027ee4c7fa5f48d30d2a93120b04dddd20d870f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]     Checking futures-io v0.3.8
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling snap v1.0.3
[INFO] [stderr]    Compiling syn v1.0.55
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[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 v1.0.22
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking futures-util v0.3.8
[INFO] [stderr]     Checking thiserror v1.0.22
[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 47.36s
[INFO] running `Command { std: "docker" "inspect" "567118d0c851b42602400c84027ee4c7fa5f48d30d2a93120b04dddd20d870f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "567118d0c851b42602400c84027ee4c7fa5f48d30d2a93120b04dddd20d870f3", kill_on_drop: false }`
[INFO] [stdout] 567118d0c851b42602400c84027ee4c7fa5f48d30d2a93120b04dddd20d870f3