[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-1.37-6/sources/1.36.0/gh/perlun/copper.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/perlun/copper.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/perlun/copper.rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/perlun/copper.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/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 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of perlun/copper.rs on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "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-1.37-6/sources/1.36.0/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-1.37-6/sources/beta-2019-07-23/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" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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[INFO] the lockfile is outdated, regenerating it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" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing perlun/copper.rs against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 3d5705891dd7b617bdb8ec769c7e12469a86f9a54a727ff71f0d072c7643c42f
[INFO] running `"docker" "start" "-a" "3d5705891dd7b617bdb8ec769c7e12469a86f9a54a727ff71f0d072c7643c42f"`
[INFO] [stderr]    Compiling serde_yaml v0.2.5
[INFO] [stderr]    Compiling humantime v0.1.3
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling mustache v0.9.0
[INFO] [stderr]    Compiling cookie v0.2.5
[INFO] [stderr]    Compiling solicit v0.4.4
[INFO] [stderr]    Compiling url v0.5.10
[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 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 48.61s
[INFO] running `"docker" "inspect" "3d5705891dd7b617bdb8ec769c7e12469a86f9a54a727ff71f0d072c7643c42f"`
[INFO] running `"docker" "rm" "-f" "3d5705891dd7b617bdb8ec769c7e12469a86f9a54a727ff71f0d072c7643c42f"`
[INFO] [stdout] 3d5705891dd7b617bdb8ec769c7e12469a86f9a54a727ff71f0d072c7643c42f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 92c7b68b1963975e6f6c13abad43ac31d4c49db78c6e0d270047b7cbb6376bbe
[INFO] running `"docker" "start" "-a" "92c7b68b1963975e6f6c13abad43ac31d4c49db78c6e0d270047b7cbb6376bbe"`
[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 1.12s
[INFO] running `"docker" "inspect" "92c7b68b1963975e6f6c13abad43ac31d4c49db78c6e0d270047b7cbb6376bbe"`
[INFO] running `"docker" "rm" "-f" "92c7b68b1963975e6f6c13abad43ac31d4c49db78c6e0d270047b7cbb6376bbe"`
[INFO] [stdout] 92c7b68b1963975e6f6c13abad43ac31d4c49db78c6e0d270047b7cbb6376bbe
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/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" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 85a5e4a6fbb7dd7010ac1f242ccb91d3af4a36cdff561051d4bbcb1e4c36a4c3
[INFO] running `"docker" "start" "-a" "85a5e4a6fbb7dd7010ac1f242ccb91d3af4a36cdff561051d4bbcb1e4c36a4c3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/copper-1cf1c9e11504c453
[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" "85a5e4a6fbb7dd7010ac1f242ccb91d3af4a36cdff561051d4bbcb1e4c36a4c3"`
[INFO] running `"docker" "rm" "-f" "85a5e4a6fbb7dd7010ac1f242ccb91d3af4a36cdff561051d4bbcb1e4c36a4c3"`
[INFO] [stdout] 85a5e4a6fbb7dd7010ac1f242ccb91d3af4a36cdff561051d4bbcb1e4c36a4c3