[INFO] updating cached repository garyemerson/metrics_update
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/garyemerson/metrics_update
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/garyemerson/metrics_update" "work/ex/beta-1.38-1/sources/1.37.0/gh/garyemerson/metrics_update"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/garyemerson/metrics_update'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/garyemerson/metrics_update" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garyemerson/metrics_update"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garyemerson/metrics_update'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 64e7496b098c8454969c44374412d35255070b18
[INFO] sha for GitHub repo garyemerson/metrics_update: 64e7496b098c8454969c44374412d35255070b18
[INFO] validating manifest of garyemerson/metrics_update 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 garyemerson/metrics_update 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 garyemerson/metrics_update
[INFO] finished frobbing garyemerson/metrics_update
[INFO] frobbed toml for garyemerson/metrics_update written to work/ex/beta-1.38-1/sources/1.37.0/gh/garyemerson/metrics_update/Cargo.toml
[INFO] started frobbing garyemerson/metrics_update
[INFO] finished frobbing garyemerson/metrics_update
[INFO] frobbed toml for garyemerson/metrics_update written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garyemerson/metrics_update/Cargo.toml
[INFO] crate garyemerson/metrics_update already has a lockfile, it will not be regenerated
[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 garyemerson/metrics_update against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garyemerson/metrics_update:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] efc6e6f7e2ebe576d45c886052706435868ebed88a31a3c67f59bda6f564a127
[INFO] running `"docker" "start" "-a" "efc6e6f7e2ebe576d45c886052706435868ebed88a31a3c67f59bda6f564a127"`
[INFO] [stderr]    Compiling chrono v0.4.0
[INFO] [stderr]    Compiling postgres-protocol v0.3.1
[INFO] [stderr]    Compiling postgres-shared v0.4.0
[INFO] [stderr]    Compiling postgres v0.15.1
[INFO] [stderr]    Compiling metrics_update v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Metric`
[INFO] [stderr]   --> src/main.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct Metric {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.18s
[INFO] running `"docker" "inspect" "efc6e6f7e2ebe576d45c886052706435868ebed88a31a3c67f59bda6f564a127"`
[INFO] running `"docker" "rm" "-f" "efc6e6f7e2ebe576d45c886052706435868ebed88a31a3c67f59bda6f564a127"`
[INFO] [stdout] efc6e6f7e2ebe576d45c886052706435868ebed88a31a3c67f59bda6f564a127
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garyemerson/metrics_update:/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0f13c5bab1e391a27356d37061339737996c50333042aa449c1fd4b9ae3e7f44
[INFO] running `"docker" "start" "-a" "0f13c5bab1e391a27356d37061339737996c50333042aa449c1fd4b9ae3e7f44"`
[INFO] [stderr]    Compiling metrics_update v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `Metric`
[INFO] [stderr]   --> src/main.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct Metric {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
[INFO] running `"docker" "inspect" "0f13c5bab1e391a27356d37061339737996c50333042aa449c1fd4b9ae3e7f44"`
[INFO] running `"docker" "rm" "-f" "0f13c5bab1e391a27356d37061339737996c50333042aa449c1fd4b9ae3e7f44"`
[INFO] [stdout] 0f13c5bab1e391a27356d37061339737996c50333042aa449c1fd4b9ae3e7f44
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/garyemerson/metrics_update:/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 0238a858465febabb0636933be509a60e2d10dc8d9390ffc96e4a98339143163
[INFO] running `"docker" "start" "-a" "0238a858465febabb0636933be509a60e2d10dc8d9390ffc96e4a98339143163"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/metrics_update-2d3e2a3cdd4778d6
[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" "0238a858465febabb0636933be509a60e2d10dc8d9390ffc96e4a98339143163"`
[INFO] running `"docker" "rm" "-f" "0238a858465febabb0636933be509a60e2d10dc8d9390ffc96e4a98339143163"`
[INFO] [stdout] 0238a858465febabb0636933be509a60e2d10dc8d9390ffc96e4a98339143163