[INFO] crate twelve_factor 0.0.3 is already in cache
[INFO] extracting crate twelve_factor 0.0.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/twelve_factor/0.0.3
[INFO] extracting crate twelve_factor 0.0.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/twelve_factor/0.0.3
[INFO] validating manifest of twelve_factor-0.0.3 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 twelve_factor-0.0.3 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 twelve_factor-0.0.3
[INFO] finished frobbing twelve_factor-0.0.3
[INFO] frobbed toml for twelve_factor-0.0.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/twelve_factor/0.0.3/Cargo.toml
[INFO] started frobbing twelve_factor-0.0.3
[INFO] finished frobbing twelve_factor-0.0.3
[INFO] frobbed toml for twelve_factor-0.0.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/twelve_factor/0.0.3/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 twelve_factor-0.0.3 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/twelve_factor/0.0.3:/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] cb5de1ec9d144d36f75e899748005f13c6e8379e6b498a8336b627a307110c83
[INFO] running `"docker" "start" "-a" "cb5de1ec9d144d36f75e899748005f13c6e8379e6b498a8336b627a307110c83"`
[INFO] [stderr]    Compiling protobuf v2.8.0
[INFO] [stderr]    Compiling prometheus v0.6.1
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]    Compiling hyper-router v0.5.0
[INFO] [stderr]    Compiling twelve_factor v0.0.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/configuration.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 | /         a_config.merge(paths).unwrap()
[INFO] [stderr] 58 | |         .merge(env);
[INFO] [stderr]    | |____________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.38s
[INFO] running `"docker" "inspect" "cb5de1ec9d144d36f75e899748005f13c6e8379e6b498a8336b627a307110c83"`
[INFO] running `"docker" "rm" "-f" "cb5de1ec9d144d36f75e899748005f13c6e8379e6b498a8336b627a307110c83"`
[INFO] [stdout] cb5de1ec9d144d36f75e899748005f13c6e8379e6b498a8336b627a307110c83
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/twelve_factor/0.0.3:/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] db60eaa0e51ca36469b9bcc231a81926833dd1109131411d4138e74833191ada
[INFO] running `"docker" "start" "-a" "db60eaa0e51ca36469b9bcc231a81926833dd1109131411d4138e74833191ada"`
[INFO] [stderr]    Compiling twelve_factor v0.0.3 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
[INFO] [stderr]   --> tests/metrics_test.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     std::thread::sleep_ms(6000);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `app`
[INFO] [stderr]  --> tests/metrics_test.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let app = ApplicationBuilder::default().build();
[INFO] [stderr]   |         ^^^ help: consider prefixing with an underscore: `_app`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/configuration.rs:57:9
[INFO] [stderr]    |
[INFO] [stderr] 57 | /         a_config.merge(paths).unwrap()
[INFO] [stderr] 58 | |         .merge(env);
[INFO] [stderr]    | |____________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.03s
[INFO] running `"docker" "inspect" "db60eaa0e51ca36469b9bcc231a81926833dd1109131411d4138e74833191ada"`
[INFO] running `"docker" "rm" "-f" "db60eaa0e51ca36469b9bcc231a81926833dd1109131411d4138e74833191ada"`
[INFO] [stdout] db60eaa0e51ca36469b9bcc231a81926833dd1109131411d4138e74833191ada
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/twelve_factor/0.0.3:/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] 4ba8ce5e1254b94743e73278c72b4c2df5c4dc83316662530e95cfbc5bae34d7
[INFO] running `"docker" "start" "-a" "4ba8ce5e1254b94743e73278c72b4c2df5c4dc83316662530e95cfbc5bae34d7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/twelve_factor-7f48ea7020351994
[INFO] [stderr]      Running /opt/crater/target/debug/deps/metrics_test-1144627b4cc76cce
[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 1 test
[INFO] [stdout] test testmetrics ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests twelve_factor
[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" "4ba8ce5e1254b94743e73278c72b4c2df5c4dc83316662530e95cfbc5bae34d7"`
[INFO] running `"docker" "rm" "-f" "4ba8ce5e1254b94743e73278c72b4c2df5c4dc83316662530e95cfbc5bae34d7"`
[INFO] [stdout] 4ba8ce5e1254b94743e73278c72b4c2df5c4dc83316662530e95cfbc5bae34d7