[INFO] updating cached repository perlun/copper.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/perlun/copper.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/perlun/copper.rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/perlun/copper.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/perlun/copper.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/perlun/copper.rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/perlun/copper.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/perlun/copper.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1cabd3709594750f41344bfaf4891b6edab2de04
[INFO] sha for GitHub repo perlun/copper.rs: 1cabd3709594750f41344bfaf4891b6edab2de04
[INFO] validating manifest of perlun/copper.rs 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 perlun/copper.rs 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 perlun/copper.rs
[INFO] finished frobbing perlun/copper.rs
[INFO] frobbed toml for perlun/copper.rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/perlun/copper.rs/Cargo.toml
[INFO] started frobbing perlun/copper.rs
[INFO] finished frobbing perlun/copper.rs
[INFO] frobbed toml for perlun/copper.rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/perlun/copper.rs/Cargo.toml
[INFO] crate perlun/copper.rs 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] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/perlun/copper.rs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 perlun/copper.rs 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/perlun/copper.rs:/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] 19111e03c104c6dca22ea7395c06dafbc0863c3a239f2ad314ccfe3cfbcd8ffb
[INFO] running `"docker" "start" "-a" "19111e03c104c6dca22ea7395c06dafbc0863c3a239f2ad314ccfe3cfbcd8ffb"`
[INFO] [stderr]    Compiling groupable v0.2.0
[INFO] [stderr]    Compiling unicode-bidi v0.2.6
[INFO] [stderr]    Compiling humantime v0.1.3
[INFO] [stderr]    Compiling serde_yaml v0.2.5
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling mustache v0.9.0
[INFO] [stderr]    Compiling cookie v0.2.5
[INFO] [stderr]    Compiling uuid v0.2.3
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling ordered-float v0.1.0
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling serde-value v0.2.1
[INFO] [stderr]    Compiling url v0.5.10
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling log4rs v0.4.8
[INFO] [stderr]    Compiling hyper v0.8.1
[INFO] [stderr]    Compiling nickel v0.11.0
[INFO] [stderr]    Compiling copper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     server.listen(&host[..]);
[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 48.64s
[INFO] running `"docker" "inspect" "19111e03c104c6dca22ea7395c06dafbc0863c3a239f2ad314ccfe3cfbcd8ffb"`
[INFO] running `"docker" "rm" "-f" "19111e03c104c6dca22ea7395c06dafbc0863c3a239f2ad314ccfe3cfbcd8ffb"`
[INFO] [stdout] 19111e03c104c6dca22ea7395c06dafbc0863c3a239f2ad314ccfe3cfbcd8ffb
[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/perlun/copper.rs:/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] 76419f6398ce99f676a560198994e03a8bb86aac3d177257b7334b2ccbb4d0b5
[INFO] running `"docker" "start" "-a" "76419f6398ce99f676a560198994e03a8bb86aac3d177257b7334b2ccbb4d0b5"`
[INFO] [stderr]    Compiling copper v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     server.listen(&host[..]);
[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 1.34s
[INFO] running `"docker" "inspect" "76419f6398ce99f676a560198994e03a8bb86aac3d177257b7334b2ccbb4d0b5"`
[INFO] running `"docker" "rm" "-f" "76419f6398ce99f676a560198994e03a8bb86aac3d177257b7334b2ccbb4d0b5"`
[INFO] [stdout] 76419f6398ce99f676a560198994e03a8bb86aac3d177257b7334b2ccbb4d0b5
[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/perlun/copper.rs:/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] 7e47593de801d57a0c38a51aa4104f8805bb642deb9d721ee3bdb006068b526b
[INFO] running `"docker" "start" "-a" "7e47593de801d57a0c38a51aa4104f8805bb642deb9d721ee3bdb006068b526b"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/copper-a7041baddf3c901e
[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" "7e47593de801d57a0c38a51aa4104f8805bb642deb9d721ee3bdb006068b526b"`
[INFO] running `"docker" "rm" "-f" "7e47593de801d57a0c38a51aa4104f8805bb642deb9d721ee3bdb006068b526b"`
[INFO] [stdout] 7e47593de801d57a0c38a51aa4104f8805bb642deb9d721ee3bdb006068b526b