[INFO] fetching crate rustdds 0.4.6...
[INFO] checking rustdds-0.4.6 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate rustdds 0.4.6 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate rustdds 0.4.6 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustdds 0.4.6
[INFO] removed 2 missing examples
[INFO] finished tweaking crates.io crate rustdds 0.4.6
[INFO] tweaked toml for crates.io crate rustdds 0.4.6 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate rustdds 0.4.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded speedy-derive v0.6.0
[INFO] [stderr]   Downloaded speedy v0.6.0
[INFO] [stderr]   Downloaded timer v0.1.6
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 297fddb38222aa58297030df5dc638cd945895ee5b2403a58d7495aaeeba562c
[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" "297fddb38222aa58297030df5dc638cd945895ee5b2403a58d7495aaeeba562c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "297fddb38222aa58297030df5dc638cd945895ee5b2403a58d7495aaeeba562c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "297fddb38222aa58297030df5dc638cd945895ee5b2403a58d7495aaeeba562c", kill_on_drop: false }`
[INFO] [stdout] 297fddb38222aa58297030df5dc638cd945895ee5b2403a58d7495aaeeba562c
[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" "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" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 7634c72c19b1ec332c72d427461c9a0417464e0b98c66f2fddc04dcdd3df026d
[INFO] running `Command { std: "docker" "start" "-a" "7634c72c19b1ec332c72d427461c9a0417464e0b98c66f2fddc04dcdd3df026d", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling serde v1.0.117
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[INFO] [stderr]     Checking bytes v0.5.6
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[INFO] [stderr]    Compiling derivative v2.1.1
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[INFO] [stderr]    Compiling thiserror-impl v1.0.22
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[INFO] [stderr]    Compiling num-derive v0.3.3
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[INFO] [stderr]     Checking serde_yaml v0.8.14
[INFO] [stderr]     Checking serde-value v0.7.0
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[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-util v0.3.1
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[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking log4rs v1.0.0
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling num_enum_derive v0.5.1
[INFO] [stderr]     Checking num_enum v0.5.1
[INFO] [stderr]     Checking rustdds v0.4.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/dds/dp_event_loop.rs:362:11
[INFO] [stdout]     |
[INFO] [stdout] 362 | /           &self.poll.register(
[INFO] [stdout] 363 | |             &new_writer.writer_command_receiver,
[INFO] [stdout] 364 | |             new_writer.get_entity_token(),
[INFO] [stdout] 365 | |             Ready::readable(),
[INFO] [stdout] 366 | |             PollOpt::edge(),
[INFO] [stdout] 367 | |           );
[INFO] [stdout]     | |___________^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 362 |           let _ = &self.poll.register(
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/dds/dp_event_loop.rs:362:11
[INFO] [stdout]     |
[INFO] [stdout] 362 | /           &self.poll.register(
[INFO] [stdout] 363 | |             &new_writer.writer_command_receiver,
[INFO] [stdout] 364 | |             new_writer.get_entity_token(),
[INFO] [stdout] 365 | |             Ready::readable(),
[INFO] [stdout] 366 | |             PollOpt::edge(),
[INFO] [stdout] 367 | |           );
[INFO] [stdout]     | |___________^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 362 |           let _ = &self.poll.register(
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "7634c72c19b1ec332c72d427461c9a0417464e0b98c66f2fddc04dcdd3df026d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7634c72c19b1ec332c72d427461c9a0417464e0b98c66f2fddc04dcdd3df026d", kill_on_drop: false }`
[INFO] [stdout] 7634c72c19b1ec332c72d427461c9a0417464e0b98c66f2fddc04dcdd3df026d