[INFO] fetching crate af_packet 0.3.0...
[INFO] checking af_packet-0.3.0 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate af_packet 0.3.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate af_packet 0.3.0 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate af_packet 0.3.0
[INFO] finished tweaking crates.io crate af_packet 0.3.0
[INFO] tweaked toml for crates.io crate af_packet 0.3.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e2d18ea1ccf942703041d7ed3b1cce27136909226f47be09ab2b0f0ad0b97e7f
[INFO] running `"docker" "start" "-a" "e2d18ea1ccf942703041d7ed3b1cce27136909226f47be09ab2b0f0ad0b97e7f"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking af_packet v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rx.rs:184:29
[INFO] [stderr]     |
[INFO] [stderr] 184 |                 if let Some(mut block) = self.get_single_block(i) {
[INFO] [stderr]     |                             ----^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/rx.rs:184:29
[INFO] [stderr]     |
[INFO] [stderr] 184 |                 if let Some(mut block) = self.get_single_block(i) {
[INFO] [stderr]     |                             ----^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.61s
[INFO] running `"docker" "inspect" "e2d18ea1ccf942703041d7ed3b1cce27136909226f47be09ab2b0f0ad0b97e7f"`
[INFO] running `"docker" "rm" "-f" "e2d18ea1ccf942703041d7ed3b1cce27136909226f47be09ab2b0f0ad0b97e7f"`
[INFO] [stdout] e2d18ea1ccf942703041d7ed3b1cce27136909226f47be09ab2b0f0ad0b97e7f