[INFO] updating cached repository henghuang/snake_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/henghuang/snake_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/henghuang/snake_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/henghuang/snake_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/henghuang/snake_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/henghuang/snake_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/henghuang/snake_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/henghuang/snake_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1dc03423ad59a962e01aa6a2b3fe3cca14c647ce
[INFO] sha for GitHub repo henghuang/snake_rust: 1dc03423ad59a962e01aa6a2b3fe3cca14c647ce
[INFO] validating manifest of henghuang/snake_rust 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 henghuang/snake_rust 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 henghuang/snake_rust
[INFO] finished frobbing henghuang/snake_rust
[INFO] frobbed toml for henghuang/snake_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/henghuang/snake_rust/Cargo.toml
[INFO] started frobbing henghuang/snake_rust
[INFO] finished frobbing henghuang/snake_rust
[INFO] frobbed toml for henghuang/snake_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/henghuang/snake_rust/Cargo.toml
[INFO] crate henghuang/snake_rust 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 henghuang/snake_rust 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/henghuang/snake_rust:/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] 8fd4fd4bf3a61ce11f48d48109b08015019fcc5a4a55937c8460bb9a924dd4df
[INFO] running `"docker" "start" "-a" "8fd4fd4bf3a61ce11f48d48109b08015019fcc5a4a55937c8460bb9a924dd4df"`
[INFO] [stderr]    Compiling snake_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:34:79
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn draw(&mut self, key: &Option<Result<u8, std::io::Error>>, stdout: &mut Write) -> bool {
[INFO] [stderr]    |                                                                               ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `"docker" "inspect" "8fd4fd4bf3a61ce11f48d48109b08015019fcc5a4a55937c8460bb9a924dd4df"`
[INFO] running `"docker" "rm" "-f" "8fd4fd4bf3a61ce11f48d48109b08015019fcc5a4a55937c8460bb9a924dd4df"`
[INFO] [stdout] 8fd4fd4bf3a61ce11f48d48109b08015019fcc5a4a55937c8460bb9a924dd4df
[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/henghuang/snake_rust:/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] 2b1bfca7b48c6d721cc44c33cdb92e51604c944ef475ed9546d5d30a7803c5b3
[INFO] running `"docker" "start" "-a" "2b1bfca7b48c6d721cc44c33cdb92e51604c944ef475ed9546d5d30a7803c5b3"`
[INFO] [stderr]    Compiling snake_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:34:79
[INFO] [stderr]    |
[INFO] [stderr] 34 |     fn draw(&mut self, key: &Option<Result<u8, std::io::Error>>, stdout: &mut Write) -> bool {
[INFO] [stderr]    |                                                                               ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "2b1bfca7b48c6d721cc44c33cdb92e51604c944ef475ed9546d5d30a7803c5b3"`
[INFO] running `"docker" "rm" "-f" "2b1bfca7b48c6d721cc44c33cdb92e51604c944ef475ed9546d5d30a7803c5b3"`
[INFO] [stdout] 2b1bfca7b48c6d721cc44c33cdb92e51604c944ef475ed9546d5d30a7803c5b3
[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/henghuang/snake_rust:/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] 8800f9b1ed4c55161c6b3d1c1bab36c8cf59fa90551e0d43c89a8bddf1b1c50a
[INFO] running `"docker" "start" "-a" "8800f9b1ed4c55161c6b3d1c1bab36c8cf59fa90551e0d43c89a8bddf1b1c50a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/snake_rust-3ad76a49e8e22b15
[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" "8800f9b1ed4c55161c6b3d1c1bab36c8cf59fa90551e0d43c89a8bddf1b1c50a"`
[INFO] running `"docker" "rm" "-f" "8800f9b1ed4c55161c6b3d1c1bab36c8cf59fa90551e0d43c89a8bddf1b1c50a"`
[INFO] [stdout] 8800f9b1ed4c55161c6b3d1c1bab36c8cf59fa90551e0d43c89a8bddf1b1c50a