[INFO] updating cached repository sirkibsirkib/zork
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sirkibsirkib/zork
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sirkibsirkib/zork" "work/ex/beta-1.37-6/sources/1.36.0/gh/sirkibsirkib/zork"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/sirkibsirkib/zork'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sirkibsirkib/zork" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sirkibsirkib/zork"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sirkibsirkib/zork'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 46b51d031e607c350fc634426670f43e92542b50
[INFO] sha for GitHub repo sirkibsirkib/zork: 46b51d031e607c350fc634426670f43e92542b50
[INFO] validating manifest of sirkibsirkib/zork 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 sirkibsirkib/zork 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 sirkibsirkib/zork
[INFO] finished frobbing sirkibsirkib/zork
[INFO] frobbed toml for sirkibsirkib/zork written to work/ex/beta-1.37-6/sources/1.36.0/gh/sirkibsirkib/zork/Cargo.toml
[INFO] started frobbing sirkibsirkib/zork
[INFO] finished frobbing sirkibsirkib/zork
[INFO] frobbed toml for sirkibsirkib/zork written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/sirkibsirkib/zork/Cargo.toml
[INFO] crate sirkibsirkib/zork 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 sirkibsirkib/zork 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-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/sirkibsirkib/zork:/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] 296801f802d49bd033b8d72ee30fb13474f8df65a642ac862740aace432c9642
[INFO] running `"docker" "start" "-a" "296801f802d49bd033b8d72ee30fb13474f8df65a642ac862740aace432c9642"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling derive-new v0.5.6
[INFO] [stderr]    Compiling zork v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Person`
[INFO] [stderr]    --> src/main.rs:188:1
[INFO] [stderr]     |
[INFO] [stderr] 188 | struct Person {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.22s
[INFO] running `"docker" "inspect" "296801f802d49bd033b8d72ee30fb13474f8df65a642ac862740aace432c9642"`
[INFO] running `"docker" "rm" "-f" "296801f802d49bd033b8d72ee30fb13474f8df65a642ac862740aace432c9642"`
[INFO] [stdout] 296801f802d49bd033b8d72ee30fb13474f8df65a642ac862740aace432c9642
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/sirkibsirkib/zork:/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] 0cf9436c14e3c4b56189400a58161574bfc57cdf0a8283664ba3ad0e42fb6e77
[INFO] running `"docker" "start" "-a" "0cf9436c14e3c4b56189400a58161574bfc57cdf0a8283664ba3ad0e42fb6e77"`
[INFO] [stderr]    Compiling zork v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Person`
[INFO] [stderr]    --> src/main.rs:188:1
[INFO] [stderr]     |
[INFO] [stderr] 188 | struct Person {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `"docker" "inspect" "0cf9436c14e3c4b56189400a58161574bfc57cdf0a8283664ba3ad0e42fb6e77"`
[INFO] running `"docker" "rm" "-f" "0cf9436c14e3c4b56189400a58161574bfc57cdf0a8283664ba3ad0e42fb6e77"`
[INFO] [stdout] 0cf9436c14e3c4b56189400a58161574bfc57cdf0a8283664ba3ad0e42fb6e77
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/sirkibsirkib/zork:/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] 44af81d6b2f08fc78dbbe7d91a89dd904a745026d2a8e29ab4e46a14fe255cea
[INFO] running `"docker" "start" "-a" "44af81d6b2f08fc78dbbe7d91a89dd904a745026d2a8e29ab4e46a14fe255cea"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zork-88ff7472395d4b19
[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" "44af81d6b2f08fc78dbbe7d91a89dd904a745026d2a8e29ab4e46a14fe255cea"`
[INFO] running `"docker" "rm" "-f" "44af81d6b2f08fc78dbbe7d91a89dd904a745026d2a8e29ab4e46a14fe255cea"`
[INFO] [stdout] 44af81d6b2f08fc78dbbe7d91a89dd904a745026d2a8e29ab4e46a14fe255cea