[INFO] updating cached repository justinbarclay/ArpPoison
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/justinbarclay/ArpPoison
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/justinbarclay/ArpPoison" "work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/justinbarclay/ArpPoison"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/justinbarclay/ArpPoison'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/justinbarclay/ArpPoison" "work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/justinbarclay/ArpPoison"`
[INFO] [stderr] Cloning into 'work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/justinbarclay/ArpPoison'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 53d1a0a195586797b1e4f9c29bfc4f73aed142bc
[INFO] sha for GitHub repo justinbarclay/ArpPoison: 53d1a0a195586797b1e4f9c29bfc4f73aed142bc
[INFO] validating manifest of justinbarclay/ArpPoison on toolchain master#e2f221c75932de7a29845c8d6f1f73536ad00c41
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of justinbarclay/ArpPoison on toolchain try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing justinbarclay/ArpPoison
[INFO] finished frobbing justinbarclay/ArpPoison
[INFO] frobbed toml for justinbarclay/ArpPoison written to work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/justinbarclay/ArpPoison/Cargo.toml
[INFO] started frobbing justinbarclay/ArpPoison
[INFO] finished frobbing justinbarclay/ArpPoison
[INFO] frobbed toml for justinbarclay/ArpPoison written to work/ex/pr-57617/sources/try#0bfb90d213a93e466b33d078a5b535a2a6f9c5ff/gh/justinbarclay/ArpPoison/Cargo.toml
[INFO] crate justinbarclay/ArpPoison has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0bfb90d213a93e466b33d078a5b535a2a6f9c5ff-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking justinbarclay/ArpPoison against master#e2f221c75932de7a29845c8d6f1f73536ad00c41 for pr-57617
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57617/worker-4/master#e2f221c75932de7a29845c8d6f1f73536ad00c41:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57617/sources/master#e2f221c75932de7a29845c8d6f1f73536ad00c41/gh/justinbarclay/ArpPoison:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e2f221c75932de7a29845c8d6f1f73536ad00c41-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bf3314aebc7fdfacd21b1cb79e0c3d0a223d0de941da75fc1d4bea3f947ef69b
[INFO] running `"docker" "start" "-a" "bf3314aebc7fdfacd21b1cb79e0c3d0a223d0de941da75fc1d4bea3f947ef69b"`
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]     Checking pnet_sys v0.20.0
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]     Checking pnet_datalink v0.20.0
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.20.0
[INFO] [stderr]    Compiling pnet_packet v0.20.0
[INFO] [stderr]     Checking pnet_transport v0.20.0
[INFO] [stderr]     Checking pnet v0.20.0
[INFO] [stderr]     Checking arp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:43:27
[INFO] [stderr]    |
[INFO] [stderr] 43 |                     &mut |mut new_packet| {
[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/main.rs:43:27
[INFO] [stderr]    |
[INFO] [stderr] 43 |                     &mut |mut new_packet| {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `"docker" "inspect" "bf3314aebc7fdfacd21b1cb79e0c3d0a223d0de941da75fc1d4bea3f947ef69b"`
[INFO] running `"docker" "rm" "-f" "bf3314aebc7fdfacd21b1cb79e0c3d0a223d0de941da75fc1d4bea3f947ef69b"`
[INFO] [stdout] bf3314aebc7fdfacd21b1cb79e0c3d0a223d0de941da75fc1d4bea3f947ef69b