[INFO] updating cached repository cygni/snakebot-client-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cygni/snakebot-client-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cygni/snakebot-client-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/cygni/snakebot-client-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/cygni/snakebot-client-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cygni/snakebot-client-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cygni/snakebot-client-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cygni/snakebot-client-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 53964389fea1970ae0fb35485aa184dd4ec9206b
[INFO] sha for GitHub repo cygni/snakebot-client-rust: 53964389fea1970ae0fb35485aa184dd4ec9206b
[INFO] validating manifest of cygni/snakebot-client-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 cygni/snakebot-client-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 cygni/snakebot-client-rust
[INFO] finished frobbing cygni/snakebot-client-rust
[INFO] frobbed toml for cygni/snakebot-client-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/cygni/snakebot-client-rust/Cargo.toml
[INFO] started frobbing cygni/snakebot-client-rust
[INFO] finished frobbing cygni/snakebot-client-rust
[INFO] frobbed toml for cygni/snakebot-client-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cygni/snakebot-client-rust/Cargo.toml
[INFO] crate cygni/snakebot-client-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 cygni/snakebot-client-rust against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cygni/snakebot-client-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] ec5f4a9a335da236ca72c6eadfdca4a73586c4642c32ea43e5a60c34b03b8eac
[INFO] running `"docker" "start" "-a" "ec5f4a9a335da236ca72c6eadfdca4a73586c4642c32ea43e5a60c34b03b8eac"`
[INFO] [stderr]    Compiling unicode-normalization v0.1.6
[INFO] [stderr]    Compiling target_info v0.1.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling nom v4.2.0
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling mio-extras v2.0.5
[INFO] [stderr]    Compiling serde-hjson v0.8.2
[INFO] [stderr]    Compiling env_logger v0.6.0
[INFO] [stderr]    Compiling config v0.9.2
[INFO] [stderr]    Compiling idna v0.1.4
[INFO] [stderr]    Compiling url v1.7.0
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.7.0/src/form_urlencoded.rs:261:40
[INFO] [stderr]     |
[INFO] [stderr] 259 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 260 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 261 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling ws v0.7.9
[INFO] [stderr]    Compiling snakebot_rust v1.2.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `"docker" "inspect" "ec5f4a9a335da236ca72c6eadfdca4a73586c4642c32ea43e5a60c34b03b8eac"`
[INFO] running `"docker" "rm" "-f" "ec5f4a9a335da236ca72c6eadfdca4a73586c4642c32ea43e5a60c34b03b8eac"`
[INFO] [stdout] ec5f4a9a335da236ca72c6eadfdca4a73586c4642c32ea43e5a60c34b03b8eac
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cygni/snakebot-client-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4fb24f296034a2150ec9b64e2e3543545423e6a1767b622456b6e35519038eef
[INFO] running `"docker" "start" "-a" "4fb24f296034a2150ec9b64e2e3543545423e6a1767b622456b6e35519038eef"`
[INFO] [stderr]    Compiling snakebot_rust v1.2.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.85s
[INFO] running `"docker" "inspect" "4fb24f296034a2150ec9b64e2e3543545423e6a1767b622456b6e35519038eef"`
[INFO] running `"docker" "rm" "-f" "4fb24f296034a2150ec9b64e2e3543545423e6a1767b622456b6e35519038eef"`
[INFO] [stdout] 4fb24f296034a2150ec9b64e2e3543545423e6a1767b622456b6e35519038eef
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/cygni/snakebot-client-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 649989de08ab598f26f0b952761e99f8c1abf9a909709bcf666e95748753bce7
[INFO] running `"docker" "start" "-a" "649989de08ab598f26f0b952761e99f8c1abf9a909709bcf666e95748753bce7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/snakebot_rust-fd6f25fbf36d501a
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test utils::test::can_not_move_to_walls ... ok
[INFO] [stdout] test utils::test::tile_is_correctly_found ... ok
[INFO] [stdout] test utils::test::snake_can_be_found_by_id ... ok
[INFO] [stdout] test utils::test::tile_is_correctly_marked_as_movable ... ok
[INFO] [stdout] test utils::test::can_snake_move_identifies_correctly ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "649989de08ab598f26f0b952761e99f8c1abf9a909709bcf666e95748753bce7"`
[INFO] running `"docker" "rm" "-f" "649989de08ab598f26f0b952761e99f8c1abf9a909709bcf666e95748753bce7"`
[INFO] [stdout] 649989de08ab598f26f0b952761e99f8c1abf9a909709bcf666e95748753bce7