[INFO] crate af_packet 0.3.0 is already in cache
[INFO] extracting crate af_packet 0.3.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/af_packet/0.3.0
[INFO] extracting crate af_packet 0.3.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/af_packet/0.3.0
[INFO] validating manifest of af_packet-0.3.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of af_packet-0.3.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing af_packet-0.3.0
[INFO] finished frobbing af_packet-0.3.0
[INFO] frobbed toml for af_packet-0.3.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/af_packet/0.3.0/Cargo.toml
[INFO] started frobbing af_packet-0.3.0
[INFO] finished frobbing af_packet-0.3.0
[INFO] frobbed toml for af_packet-0.3.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/af_packet/0.3.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing af_packet-0.3.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/af_packet/0.3.0:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] be62e2a2d63f4d2951d17cac230505e9cbee91f2b6cda1ecbad669d5f204b58c
[INFO] running `"docker" "start" "-a" "be62e2a2d63f4d2951d17cac230505e9cbee91f2b6cda1ecbad669d5f204b58c"`
[INFO] [stderr]    Compiling af_packet v0.3.0 (/opt/crater/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]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `"docker" "inspect" "be62e2a2d63f4d2951d17cac230505e9cbee91f2b6cda1ecbad669d5f204b58c"`
[INFO] running `"docker" "rm" "-f" "be62e2a2d63f4d2951d17cac230505e9cbee91f2b6cda1ecbad669d5f204b58c"`
[INFO] [stdout] be62e2a2d63f4d2951d17cac230505e9cbee91f2b6cda1ecbad669d5f204b58c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/af_packet/0.3.0:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9c7124ccf69054e5b408f3b91ce1b8ab2b72b3009b3cc4e92a34344511d04213
[INFO] running `"docker" "start" "-a" "9c7124ccf69054e5b408f3b91ce1b8ab2b72b3009b3cc4e92a34344511d04213"`
[INFO] [stderr]    Compiling af_packet v0.3.0 (/opt/crater/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]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "9c7124ccf69054e5b408f3b91ce1b8ab2b72b3009b3cc4e92a34344511d04213"`
[INFO] running `"docker" "rm" "-f" "9c7124ccf69054e5b408f3b91ce1b8ab2b72b3009b3cc4e92a34344511d04213"`
[INFO] [stdout] 9c7124ccf69054e5b408f3b91ce1b8ab2b72b3009b3cc4e92a34344511d04213
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/af_packet/0.3.0:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 94c913b4846b4434f70a563e6a37382308ae008ded4d4cffe377395af12bfb0f
[INFO] running `"docker" "start" "-a" "94c913b4846b4434f70a563e6a37382308ae008ded4d4cffe377395af12bfb0f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/af_packet-7b114eb7a510ec89
[INFO] [stderr]    Doc-tests af_packet
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "94c913b4846b4434f70a563e6a37382308ae008ded4d4cffe377395af12bfb0f"`
[INFO] running `"docker" "rm" "-f" "94c913b4846b4434f70a563e6a37382308ae008ded4d4cffe377395af12bfb0f"`
[INFO] [stdout] 94c913b4846b4434f70a563e6a37382308ae008ded4d4cffe377395af12bfb0f