[INFO] fetching crate pcap-async 0.3.0...
[INFO] checking pcap-async-0.3.0 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate pcap-async 0.3.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate pcap-async 0.3.0 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pcap-async 0.3.0
[INFO] finished tweaking crates.io crate pcap-async 0.3.0
[INFO] tweaked toml for crates.io crate pcap-async 0.3.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "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" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1eddfeb354b3722e9bc3e6e89892a0de0f9420b1d02d9aa136b1f5a3e4bbc271
[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" "1eddfeb354b3722e9bc3e6e89892a0de0f9420b1d02d9aa136b1f5a3e4bbc271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1eddfeb354b3722e9bc3e6e89892a0de0f9420b1d02d9aa136b1f5a3e4bbc271", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1eddfeb354b3722e9bc3e6e89892a0de0f9420b1d02d9aa136b1f5a3e4bbc271", kill_on_drop: false }`
[INFO] [stdout] 1eddfeb354b3722e9bc3e6e89892a0de0f9420b1d02d9aa136b1f5a3e4bbc271
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5884eeeecfaa5b64591bc6acc55273cc24c7cd4195db2e10c20aeca2fa57ea16
[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" "5884eeeecfaa5b64591bc6acc55273cc24c7cd4195db2e10c20aeca2fa57ea16", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling proc-macro2 v1.0.21
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking futures-io v0.3.5
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]     Checking fastrand v1.3.5
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking event-listener v2.4.0
[INFO] [stderr]     Checking parking v1.0.6
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking async-task v3.0.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]     Checking futures-lite v0.1.11
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking async-channel v1.4.2
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling pcap-sys v0.1.3
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking rand_xoshiro v0.1.0
[INFO] [stderr]     Checking blocking v0.4.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking socket2 v0.3.15
[INFO] [stderr]     Checking net2 v0.2.35
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling syn v1.0.40
[INFO] [stderr]     Checking criterion-plot v0.3.1
[INFO] [stderr]     Checking rayon-core v1.8.0
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking rayon v1.4.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.23
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking pin-project v0.4.23
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking smol v0.1.18
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking pcap-async v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/bridge_stream.rs:47:21
[INFO] [stdout]    |
[INFO] [stdout] 47 |                     std::mem::replace(this.stream, Some(stream));
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![deny(unused_must_use, unused_imports, bare_trait_objects)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pcap-async`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/bridge_stream.rs:47:21
[INFO] [stdout]    |
[INFO] [stdout] 47 |                     std::mem::replace(this.stream, Some(stream));
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![deny(unused_must_use, unused_imports, bare_trait_objects)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5884eeeecfaa5b64591bc6acc55273cc24c7cd4195db2e10c20aeca2fa57ea16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5884eeeecfaa5b64591bc6acc55273cc24c7cd4195db2e10c20aeca2fa57ea16", kill_on_drop: false }`
[INFO] [stdout] 5884eeeecfaa5b64591bc6acc55273cc24c7cd4195db2e10c20aeca2fa57ea16
