[INFO] updating cached repository hustshawn/rust-iron-demo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hustshawn/rust-iron-demo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hustshawn/rust-iron-demo" "work/ex/beta-1.38-1/sources/1.37.0/gh/hustshawn/rust-iron-demo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hustshawn/rust-iron-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hustshawn/rust-iron-demo" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hustshawn/rust-iron-demo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hustshawn/rust-iron-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8f8107108916d5bed8c0b23adb975fb99cd665ed
[INFO] sha for GitHub repo hustshawn/rust-iron-demo: 8f8107108916d5bed8c0b23adb975fb99cd665ed
[INFO] validating manifest of hustshawn/rust-iron-demo 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 hustshawn/rust-iron-demo 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 hustshawn/rust-iron-demo
[INFO] finished frobbing hustshawn/rust-iron-demo
[INFO] frobbed toml for hustshawn/rust-iron-demo written to work/ex/beta-1.38-1/sources/1.37.0/gh/hustshawn/rust-iron-demo/Cargo.toml
[INFO] started frobbing hustshawn/rust-iron-demo
[INFO] finished frobbing hustshawn/rust-iron-demo
[INFO] frobbed toml for hustshawn/rust-iron-demo written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hustshawn/rust-iron-demo/Cargo.toml
[INFO] crate hustshawn/rust-iron-demo 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 hustshawn/rust-iron-demo 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hustshawn/rust-iron-demo:/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] e073f478731814e3dcca2e775cc8125a871baedf5f33af0c653f6720ba2bc72e
[INFO] running `"docker" "start" "-a" "e073f478731814e3dcca2e775cc8125a871baedf5f33af0c653f6720ba2bc72e"`
[INFO] [stderr]    Compiling base64 v0.5.2
[INFO] [stderr]    Compiling hyper v0.10.12
[INFO] [stderr]    Compiling iron v0.5.1
[INFO] [stderr]    Compiling router v0.5.1
[INFO] [stderr]    Compiling iron-prj v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `req`
[INFO] [stderr]   --> src/main.rs:99:12
[INFO] [stderr]    |
[INFO] [stderr] 99 | fn handler(req: &mut Request) -> IronResult<Response> {
[INFO] [stderr]    |            ^^^ help: consider prefixing with an underscore: `_req`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.08s
[INFO] running `"docker" "inspect" "e073f478731814e3dcca2e775cc8125a871baedf5f33af0c653f6720ba2bc72e"`
[INFO] running `"docker" "rm" "-f" "e073f478731814e3dcca2e775cc8125a871baedf5f33af0c653f6720ba2bc72e"`
[INFO] [stdout] e073f478731814e3dcca2e775cc8125a871baedf5f33af0c653f6720ba2bc72e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hustshawn/rust-iron-demo:/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] b4fa91daa3d808d97cd5d827147c0ae3d3b17ad7203caa3b795ef68a01a3d3f2
[INFO] running `"docker" "start" "-a" "b4fa91daa3d808d97cd5d827147c0ae3d3b17ad7203caa3b795ef68a01a3d3f2"`
[INFO] [stderr]    Compiling iron-prj v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `req`
[INFO] [stderr]   --> src/main.rs:99:12
[INFO] [stderr]    |
[INFO] [stderr] 99 | fn handler(req: &mut Request) -> IronResult<Response> {
[INFO] [stderr]    |            ^^^ help: consider prefixing with an underscore: `_req`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "b4fa91daa3d808d97cd5d827147c0ae3d3b17ad7203caa3b795ef68a01a3d3f2"`
[INFO] running `"docker" "rm" "-f" "b4fa91daa3d808d97cd5d827147c0ae3d3b17ad7203caa3b795ef68a01a3d3f2"`
[INFO] [stdout] b4fa91daa3d808d97cd5d827147c0ae3d3b17ad7203caa3b795ef68a01a3d3f2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hustshawn/rust-iron-demo:/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] 194dfc50f034906b5fe79a2435e81cf987100c3489ce67a2dc4acf06bf0c5aa6
[INFO] running `"docker" "start" "-a" "194dfc50f034906b5fe79a2435e81cf987100c3489ce67a2dc4acf06bf0c5aa6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/iron_prj-d07c4e87766e9b85
[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" "194dfc50f034906b5fe79a2435e81cf987100c3489ce67a2dc4acf06bf0c5aa6"`
[INFO] running `"docker" "rm" "-f" "194dfc50f034906b5fe79a2435e81cf987100c3489ce67a2dc4acf06bf0c5aa6"`
[INFO] [stdout] 194dfc50f034906b5fe79a2435e81cf987100c3489ce67a2dc4acf06bf0c5aa6