[INFO] updating cached repository christiansakai/ip_sniffer_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/christiansakai/ip_sniffer_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/christiansakai/ip_sniffer_rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/christiansakai/ip_sniffer_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/christiansakai/ip_sniffer_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/christiansakai/ip_sniffer_rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/christiansakai/ip_sniffer_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/christiansakai/ip_sniffer_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a6ed6bb5780f2fc4601ba402e0b886c520bffed0
[INFO] sha for GitHub repo christiansakai/ip_sniffer_rust: a6ed6bb5780f2fc4601ba402e0b886c520bffed0
[INFO] validating manifest of christiansakai/ip_sniffer_rust on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of christiansakai/ip_sniffer_rust on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing christiansakai/ip_sniffer_rust
[INFO] finished frobbing christiansakai/ip_sniffer_rust
[INFO] frobbed toml for christiansakai/ip_sniffer_rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/christiansakai/ip_sniffer_rust/Cargo.toml
[INFO] started frobbing christiansakai/ip_sniffer_rust
[INFO] finished frobbing christiansakai/ip_sniffer_rust
[INFO] frobbed toml for christiansakai/ip_sniffer_rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/christiansakai/ip_sniffer_rust/Cargo.toml
[INFO] crate christiansakai/ip_sniffer_rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing christiansakai/ip_sniffer_rust against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/christiansakai/ip_sniffer_rust:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 59f103fa437e1f9c60f671f1edaa74fb1e7cebbcf8f3dc7e005df979bb9071a5
[INFO] running `"docker" "start" "-a" "59f103fa437e1f9c60f671f1edaa74fb1e7cebbcf8f3dc7e005df979bb9071a5"`
[INFO] [stderr]    Compiling ip_sniffer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `flag`
[INFO] [stderr]   --> src/main.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     flag: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `"docker" "inspect" "59f103fa437e1f9c60f671f1edaa74fb1e7cebbcf8f3dc7e005df979bb9071a5"`
[INFO] running `"docker" "rm" "-f" "59f103fa437e1f9c60f671f1edaa74fb1e7cebbcf8f3dc7e005df979bb9071a5"`
[INFO] [stdout] 59f103fa437e1f9c60f671f1edaa74fb1e7cebbcf8f3dc7e005df979bb9071a5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/christiansakai/ip_sniffer_rust:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 35490ddc23e8a6b40e26bed9c8fe7f77edceccf31dbc2762d0386fdb4ee8b8dc
[INFO] running `"docker" "start" "-a" "35490ddc23e8a6b40e26bed9c8fe7f77edceccf31dbc2762d0386fdb4ee8b8dc"`
[INFO] [stderr]    Compiling ip_sniffer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `flag`
[INFO] [stderr]   --> src/main.rs:51:5
[INFO] [stderr]    |
[INFO] [stderr] 51 |     flag: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "35490ddc23e8a6b40e26bed9c8fe7f77edceccf31dbc2762d0386fdb4ee8b8dc"`
[INFO] running `"docker" "rm" "-f" "35490ddc23e8a6b40e26bed9c8fe7f77edceccf31dbc2762d0386fdb4ee8b8dc"`
[INFO] [stdout] 35490ddc23e8a6b40e26bed9c8fe7f77edceccf31dbc2762d0386fdb4ee8b8dc
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/christiansakai/ip_sniffer_rust:/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 03874c2ad5295ac0435f83bc76bb61f236d37f4be3fa1163709d9db456b66934
[INFO] running `"docker" "start" "-a" "03874c2ad5295ac0435f83bc76bb61f236d37f4be3fa1163709d9db456b66934"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ip_sniffer-286aebb024a59c34
[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" "03874c2ad5295ac0435f83bc76bb61f236d37f4be3fa1163709d9db456b66934"`
[INFO] running `"docker" "rm" "-f" "03874c2ad5295ac0435f83bc76bb61f236d37f4be3fa1163709d9db456b66934"`
[INFO] [stdout] 03874c2ad5295ac0435f83bc76bb61f236d37f4be3fa1163709d9db456b66934