[INFO] updating cached repository jo/my-shiny-heroku-rust-test-app
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jo/my-shiny-heroku-rust-test-app
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jo/my-shiny-heroku-rust-test-app" "work/ex/beta-1.38-1/sources/1.37.0/gh/jo/my-shiny-heroku-rust-test-app"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jo/my-shiny-heroku-rust-test-app'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jo/my-shiny-heroku-rust-test-app" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jo/my-shiny-heroku-rust-test-app"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jo/my-shiny-heroku-rust-test-app'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b7ed6765382f144860a450f0432107b0387c0610
[INFO] sha for GitHub repo jo/my-shiny-heroku-rust-test-app: b7ed6765382f144860a450f0432107b0387c0610
[INFO] validating manifest of jo/my-shiny-heroku-rust-test-app 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 jo/my-shiny-heroku-rust-test-app 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 jo/my-shiny-heroku-rust-test-app
[INFO] finished frobbing jo/my-shiny-heroku-rust-test-app
[INFO] frobbed toml for jo/my-shiny-heroku-rust-test-app written to work/ex/beta-1.38-1/sources/1.37.0/gh/jo/my-shiny-heroku-rust-test-app/Cargo.toml
[INFO] started frobbing jo/my-shiny-heroku-rust-test-app
[INFO] finished frobbing jo/my-shiny-heroku-rust-test-app
[INFO] frobbed toml for jo/my-shiny-heroku-rust-test-app written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jo/my-shiny-heroku-rust-test-app/Cargo.toml
[INFO] crate jo/my-shiny-heroku-rust-test-app 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 jo/my-shiny-heroku-rust-test-app 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-3/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/jo/my-shiny-heroku-rust-test-app:/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] a9241b7a93855999b39e41989e51f6d7da9a1ed46568c140d5ac6b09a400bcb8
[INFO] running `"docker" "start" "-a" "a9241b7a93855999b39e41989e51f6d7da9a1ed46568c140d5ac6b09a400bcb8"`
[INFO] [stderr]    Compiling rand_os v0.1.0
[INFO] [stderr]    Compiling time v0.1.41
[INFO] [stderr]    Compiling rand v0.6.3
[INFO] [stderr]    Compiling hyper v0.10.15
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.6
[INFO] [stderr]    Compiling iron v0.6.0
[INFO] [stderr]    Compiling my-shiny-heroku-rust-test-app v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | /     Iron::new(|_: &mut Request| Ok(Response::with((status::Ok, "Hello world!"))))
[INFO] [stderr] 11 | |         .http(format!("0.0.0.0:{}", port));
[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 23.85s
[INFO] running `"docker" "inspect" "a9241b7a93855999b39e41989e51f6d7da9a1ed46568c140d5ac6b09a400bcb8"`
[INFO] running `"docker" "rm" "-f" "a9241b7a93855999b39e41989e51f6d7da9a1ed46568c140d5ac6b09a400bcb8"`
[INFO] [stdout] a9241b7a93855999b39e41989e51f6d7da9a1ed46568c140d5ac6b09a400bcb8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/jo/my-shiny-heroku-rust-test-app:/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] 15762e008d35f6cdc3e288f63ff9c4ba65be4a2515a8aae896ef462cd916c483
[INFO] running `"docker" "start" "-a" "15762e008d35f6cdc3e288f63ff9c4ba65be4a2515a8aae896ef462cd916c483"`
[INFO] [stderr]    Compiling my-shiny-heroku-rust-test-app v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | /     Iron::new(|_: &mut Request| Ok(Response::with((status::Ok, "Hello world!"))))
[INFO] [stderr] 11 | |         .http(format!("0.0.0.0:{}", port));
[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 0.86s
[INFO] running `"docker" "inspect" "15762e008d35f6cdc3e288f63ff9c4ba65be4a2515a8aae896ef462cd916c483"`
[INFO] running `"docker" "rm" "-f" "15762e008d35f6cdc3e288f63ff9c4ba65be4a2515a8aae896ef462cd916c483"`
[INFO] [stdout] 15762e008d35f6cdc3e288f63ff9c4ba65be4a2515a8aae896ef462cd916c483
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/jo/my-shiny-heroku-rust-test-app:/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] 838844f4850cd492248d41f2b5f9a4719308becc6a91defab75974b7870147be
[INFO] running `"docker" "start" "-a" "838844f4850cd492248d41f2b5f9a4719308becc6a91defab75974b7870147be"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/my_shiny_heroku_rust_test_app-8d0f35d56a46de1e
[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" "838844f4850cd492248d41f2b5f9a4719308becc6a91defab75974b7870147be"`
[INFO] running `"docker" "rm" "-f" "838844f4850cd492248d41f2b5f9a4719308becc6a91defab75974b7870147be"`
[INFO] [stdout] 838844f4850cd492248d41f2b5f9a4719308becc6a91defab75974b7870147be