[INFO] updating cached repository yupferris/butterball
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yupferris/butterball
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yupferris/butterball" "work/ex/beta-1.38-1/sources/1.37.0/gh/yupferris/butterball"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/yupferris/butterball'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yupferris/butterball" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yupferris/butterball"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yupferris/butterball'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a3d5876a03fe4a9a8db1f732060646ba9db9c281
[INFO] sha for GitHub repo yupferris/butterball: a3d5876a03fe4a9a8db1f732060646ba9db9c281
[INFO] validating manifest of yupferris/butterball 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 yupferris/butterball 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 yupferris/butterball
[INFO] finished frobbing yupferris/butterball
[INFO] frobbed toml for yupferris/butterball written to work/ex/beta-1.38-1/sources/1.37.0/gh/yupferris/butterball/Cargo.toml
[INFO] started frobbing yupferris/butterball
[INFO] finished frobbing yupferris/butterball
[INFO] frobbed toml for yupferris/butterball written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/yupferris/butterball/Cargo.toml
[INFO] crate yupferris/butterball 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/yupferris/butterball/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[INFO] the lockfile is outdated, regenerating it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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing yupferris/butterball 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yupferris/butterball:/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] bbc05911154d25f84ea9b35f963afb3b5b8c3b99c626b7938dc5ff942072b9b8
[INFO] running `"docker" "start" "-a" "bbc05911154d25f84ea9b35f963afb3b5b8c3b99c626b7938dc5ff942072b9b8"`
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling nom v1.1.0
[INFO] [stderr]    Compiling minifb v0.3.1
[INFO] [stderr]    Compiling dylib v0.0.1
[INFO] [stderr]    Compiling x11-dl v2.2.1
[INFO] [stderr]    Compiling butterball v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/impls.rs:17:23
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub function: Box<Fn(&mut Context, &[Value]) -> Value>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Context, &[Value]) -> Value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/impls.rs:24:23
[INFO] [stderr]    |
[INFO] [stderr] 24 |         function: Box<Fn(&mut Context, &[Value]) -> Value>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Context, &[Value]) -> Value`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.00s
[INFO] running `"docker" "inspect" "bbc05911154d25f84ea9b35f963afb3b5b8c3b99c626b7938dc5ff942072b9b8"`
[INFO] running `"docker" "rm" "-f" "bbc05911154d25f84ea9b35f963afb3b5b8c3b99c626b7938dc5ff942072b9b8"`
[INFO] [stdout] bbc05911154d25f84ea9b35f963afb3b5b8c3b99c626b7938dc5ff942072b9b8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yupferris/butterball:/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] 440077a2e28c38844c240f6c8507ebaddab1a2ceaa00ec2b23acf80d35a72a18
[INFO] running `"docker" "start" "-a" "440077a2e28c38844c240f6c8507ebaddab1a2ceaa00ec2b23acf80d35a72a18"`
[INFO] [stderr]    Compiling butterball v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/impls.rs:17:23
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub function: Box<Fn(&mut Context, &[Value]) -> Value>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Context, &[Value]) -> Value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/impls.rs:24:23
[INFO] [stderr]    |
[INFO] [stderr] 24 |         function: Box<Fn(&mut Context, &[Value]) -> Value>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Context, &[Value]) -> Value`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.41s
[INFO] running `"docker" "inspect" "440077a2e28c38844c240f6c8507ebaddab1a2ceaa00ec2b23acf80d35a72a18"`
[INFO] running `"docker" "rm" "-f" "440077a2e28c38844c240f6c8507ebaddab1a2ceaa00ec2b23acf80d35a72a18"`
[INFO] [stdout] 440077a2e28c38844c240f6c8507ebaddab1a2ceaa00ec2b23acf80d35a72a18
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/yupferris/butterball:/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] d7de6cbb569d70125b30de1207c83dbfe7f2a7497da5a02cea07b40d4b18e139
[INFO] running `"docker" "start" "-a" "d7de6cbb569d70125b30de1207c83dbfe7f2a7497da5a02cea07b40d4b18e139"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[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] [stderr]      Running /opt/crater/target/debug/deps/butterball-8fd45fd619bbfa32
[INFO] running `"docker" "inspect" "d7de6cbb569d70125b30de1207c83dbfe7f2a7497da5a02cea07b40d4b18e139"`
[INFO] running `"docker" "rm" "-f" "d7de6cbb569d70125b30de1207c83dbfe7f2a7497da5a02cea07b40d4b18e139"`
[INFO] [stdout] d7de6cbb569d70125b30de1207c83dbfe7f2a7497da5a02cea07b40d4b18e139