[INFO] updating cached repository yogesum/port_sniffer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yogesum/port_sniffer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yogesum/port_sniffer" "work/ex/beta-1.37-6/sources/1.36.0/gh/yogesum/port_sniffer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/yogesum/port_sniffer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yogesum/port_sniffer" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yogesum/port_sniffer"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yogesum/port_sniffer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7dabb8e9f19b25d5fa1c8305c6b6b75248ffce53
[INFO] sha for GitHub repo yogesum/port_sniffer: 7dabb8e9f19b25d5fa1c8305c6b6b75248ffce53
[INFO] validating manifest of yogesum/port_sniffer 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 yogesum/port_sniffer 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 yogesum/port_sniffer
[INFO] finished frobbing yogesum/port_sniffer
[INFO] frobbed toml for yogesum/port_sniffer written to work/ex/beta-1.37-6/sources/1.36.0/gh/yogesum/port_sniffer/Cargo.toml
[INFO] started frobbing yogesum/port_sniffer
[INFO] finished frobbing yogesum/port_sniffer
[INFO] frobbed toml for yogesum/port_sniffer written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/yogesum/port_sniffer/Cargo.toml
[INFO] crate yogesum/port_sniffer 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 yogesum/port_sniffer against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/yogesum/port_sniffer:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 54ccfb056614bc316f6fc4c9627d713a227f81739df22a2afd6644b144abe53d
[INFO] running `"docker" "start" "-a" "54ccfb056614bc316f6fc4c9627d713a227f81739df22a2afd6644b144abe53d"`
[INFO] [stderr]    Compiling port_sniffer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `flag`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     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 1.76s
[INFO] running `"docker" "inspect" "54ccfb056614bc316f6fc4c9627d713a227f81739df22a2afd6644b144abe53d"`
[INFO] running `"docker" "rm" "-f" "54ccfb056614bc316f6fc4c9627d713a227f81739df22a2afd6644b144abe53d"`
[INFO] [stdout] 54ccfb056614bc316f6fc4c9627d713a227f81739df22a2afd6644b144abe53d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/yogesum/port_sniffer:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 5d95680c2bf0d4b28acadd6b29a6e594cd956e838252eb5018d0c2fdd9420e9e
[INFO] running `"docker" "start" "-a" "5d95680c2bf0d4b28acadd6b29a6e594cd956e838252eb5018d0c2fdd9420e9e"`
[INFO] [stderr]    Compiling port_sniffer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `flag`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     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 0.83s
[INFO] running `"docker" "inspect" "5d95680c2bf0d4b28acadd6b29a6e594cd956e838252eb5018d0c2fdd9420e9e"`
[INFO] running `"docker" "rm" "-f" "5d95680c2bf0d4b28acadd6b29a6e594cd956e838252eb5018d0c2fdd9420e9e"`
[INFO] [stdout] 5d95680c2bf0d4b28acadd6b29a6e594cd956e838252eb5018d0c2fdd9420e9e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/yogesum/port_sniffer:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] e1246fc65ec72ec3a339a065d8bc67b32b357dd6f5e70d25bdf20816fac2b9f0
[INFO] running `"docker" "start" "-a" "e1246fc65ec72ec3a339a065d8bc67b32b357dd6f5e70d25bdf20816fac2b9f0"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/port_sniffer-09ca81b72feafbc5
[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" "e1246fc65ec72ec3a339a065d8bc67b32b357dd6f5e70d25bdf20816fac2b9f0"`
[INFO] running `"docker" "rm" "-f" "e1246fc65ec72ec3a339a065d8bc67b32b357dd6f5e70d25bdf20816fac2b9f0"`
[INFO] [stdout] e1246fc65ec72ec3a339a065d8bc67b32b357dd6f5e70d25bdf20816fac2b9f0