[INFO] cloning repository https://github.com/alexandraorth/snake
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexandraorth/snake" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexandraorth%2Fsnake", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexandraorth%2Fsnake'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 776a1f99328cfe3728ba60cfe8c908175b630d94
[INFO] testing alexandraorth/snake against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexandraorth%2Fsnake" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexandraorth/snake on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alexandraorth/snake
[INFO] finished tweaking git repo https://github.com/alexandraorth/snake
[INFO] tweaked toml for git repo https://github.com/alexandraorth/snake written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/alexandraorth/snake already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a46f78a05acf220d7ff5fe1b1d6418ffe72d90f9184c127ebe340734580d767
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2a46f78a05acf220d7ff5fe1b1d6418ffe72d90f9184c127ebe340734580d767", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a46f78a05acf220d7ff5fe1b1d6418ffe72d90f9184c127ebe340734580d767", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a46f78a05acf220d7ff5fe1b1d6418ffe72d90f9184c127ebe340734580d767", kill_on_drop: false }`
[INFO] [stdout] 2a46f78a05acf220d7ff5fe1b1d6418ffe72d90f9184c127ebe340734580d767
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec296a74a5f851f9455c152657295e4168334a3e68c2230f1049d3b421dbaf53
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ec296a74a5f851f9455c152657295e4168334a3e68c2230f1049d3b421dbaf53", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling snake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/snake.rs:18:24
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub body: VecDeque<(Segment)>,
[INFO] [stdout]    |                        ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:105:33
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn update_direction(stdin: &mut Read, game: &mut Game){
[INFO] [stdout]     |                                 ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:42:34
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 42 |             Direction::UP     => self.body.push_front(Segment{x: head.x, y: head.y - 1, direction: Direction::UP}),
[INFO] [stdout]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:43:34
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 43 |             Direction::DOWN   => self.body.push_front(Segment{x: head.x, y: head.y + 1, direction: Direction::DOWN}),
[INFO] [stdout]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:45:34
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 45 |             Direction::LEFT   => self.body.push_front(Segment{x: head.x - 1, y: head.y, direction: Direction::LEFT}),
[INFO] [stdout]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:44:34
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 44 |             Direction::RIGHT  => self.body.push_front(Segment{x: head.x + 1, y: head.y, direction: Direction::RIGHT}),
[INFO] [stdout]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:59:34
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 59 |             Direction::RIGHT  => self.body.push_back(Segment{x: tail.x - 1, y: tail.y, direction: Direction::RIGHT}),
[INFO] [stdout]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:57:34
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 57 |             Direction::UP     => self.body.push_back(Segment{x: tail.x, y: tail.y + 1, direction: Direction::UP}),
[INFO] [stdout]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:60:34
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 60 |             Direction::LEFT   => self.body.push_back(Segment{x: tail.x + 1, y: tail.y, direction: Direction::LEFT}),
[INFO] [stdout]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:58:34
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 58 |             Direction::DOWN   => self.body.push_back(Segment{x: tail.x, y: tail.y - 1, direction: Direction::DOWN}),
[INFO] [stdout]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.37s
[INFO] running `Command { std: "docker" "inspect" "ec296a74a5f851f9455c152657295e4168334a3e68c2230f1049d3b421dbaf53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec296a74a5f851f9455c152657295e4168334a3e68c2230f1049d3b421dbaf53", kill_on_drop: false }`
[INFO] [stdout] ec296a74a5f851f9455c152657295e4168334a3e68c2230f1049d3b421dbaf53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22bf6d9cc35f4d61fc1ca8db63f9af5dcaf8f4df14b6a1ccbb665f42373af371
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "22bf6d9cc35f4d61fc1ca8db63f9af5dcaf8f4df14b6a1ccbb665f42373af371", kill_on_drop: false }`
[INFO] [stderr]    Compiling snake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/snake.rs:18:24
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub body: VecDeque<(Segment)>,
[INFO] [stdout]    |                        ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:105:33
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn update_direction(stdin: &mut Read, game: &mut Game){
[INFO] [stdout]     |                                 ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:42:34
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 42 |             Direction::UP     => self.body.push_front(Segment{x: head.x, y: head.y - 1, direction: Direction::UP}),
[INFO] [stdout]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:43:34
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 43 |             Direction::DOWN   => self.body.push_front(Segment{x: head.x, y: head.y + 1, direction: Direction::DOWN}),
[INFO] [stdout]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:45:34
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 45 |             Direction::LEFT   => self.body.push_front(Segment{x: head.x - 1, y: head.y, direction: Direction::LEFT}),
[INFO] [stdout]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:44:34
[INFO] [stdout]    |
[INFO] [stdout] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 44 |             Direction::RIGHT  => self.body.push_front(Segment{x: head.x + 1, y: head.y, direction: Direction::RIGHT}),
[INFO] [stdout]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:59:34
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 59 |             Direction::RIGHT  => self.body.push_back(Segment{x: tail.x - 1, y: tail.y, direction: Direction::RIGHT}),
[INFO] [stdout]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:57:34
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 57 |             Direction::UP     => self.body.push_back(Segment{x: tail.x, y: tail.y + 1, direction: Direction::UP}),
[INFO] [stdout]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:60:34
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 60 |             Direction::LEFT   => self.body.push_back(Segment{x: tail.x + 1, y: tail.y, direction: Direction::LEFT}),
[INFO] [stdout]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/snake.rs:58:34
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stdout]    |                    --------- immutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 58 |             Direction::DOWN   => self.body.push_back(Segment{x: tail.x, y: tail.y - 1, direction: Direction::DOWN}),
[INFO] [stdout]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stdout]    |                                  |
[INFO] [stdout]    |                                  mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "22bf6d9cc35f4d61fc1ca8db63f9af5dcaf8f4df14b6a1ccbb665f42373af371", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22bf6d9cc35f4d61fc1ca8db63f9af5dcaf8f4df14b6a1ccbb665f42373af371", kill_on_drop: false }`
[INFO] [stdout] 22bf6d9cc35f4d61fc1ca8db63f9af5dcaf8f4df14b6a1ccbb665f42373af371
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3528c55478a279ca7f04df4b8abcc21680fd559aff57a9c0a1f39be8c81cdfba
[INFO] running `Command { std: "docker" "start" "-a" "3528c55478a279ca7f04df4b8abcc21680fd559aff57a9c0a1f39be8c81cdfba", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/snake.rs:18:24
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub body: VecDeque<(Segment)>,
[INFO] [stderr]    |                        ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:105:33
[INFO] [stderr]     |
[INFO] [stderr] 105 | fn update_direction(stdin: &mut Read, game: &mut Game){
[INFO] [stderr]     |                                 ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/snake.rs:42:34
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stderr]    |                    --------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 42 |             Direction::UP     => self.body.push_front(Segment{x: head.x, y: head.y - 1, direction: Direction::UP}),
[INFO] [stderr]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/snake.rs:43:34
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stderr]    |                    --------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 43 |             Direction::DOWN   => self.body.push_front(Segment{x: head.x, y: head.y + 1, direction: Direction::DOWN}),
[INFO] [stderr]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/snake.rs:45:34
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stderr]    |                    --------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 45 |             Direction::LEFT   => self.body.push_front(Segment{x: head.x - 1, y: head.y, direction: Direction::LEFT}),
[INFO] [stderr]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/snake.rs:44:34
[INFO] [stderr]    |
[INFO] [stderr] 39 |         let head = self.body.front().unwrap(); //TODO dont use unwrap
[INFO] [stderr]    |                    --------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 44 |             Direction::RIGHT  => self.body.push_front(Segment{x: head.x + 1, y: head.y, direction: Direction::RIGHT}),
[INFO] [stderr]    |                                  ^^^^^^^^^                       ------ immutable borrow later used here
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/snake.rs:59:34
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stderr]    |                    --------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 59 |             Direction::RIGHT  => self.body.push_back(Segment{x: tail.x - 1, y: tail.y, direction: Direction::RIGHT}),
[INFO] [stderr]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/snake.rs:57:34
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stderr]    |                    --------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 57 |             Direction::UP     => self.body.push_back(Segment{x: tail.x, y: tail.y + 1, direction: Direction::UP}),
[INFO] [stderr]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/snake.rs:60:34
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stderr]    |                    --------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 60 |             Direction::LEFT   => self.body.push_back(Segment{x: tail.x + 1, y: tail.y, direction: Direction::LEFT}),
[INFO] [stderr]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `self.body` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/snake.rs:58:34
[INFO] [stderr]    |
[INFO] [stderr] 54 |         let tail = self.body.back().unwrap(); //TODO dont use unwrap
[INFO] [stderr]    |                    --------- immutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 58 |             Direction::DOWN   => self.body.push_back(Segment{x: tail.x, y: tail.y - 1, direction: Direction::DOWN}),
[INFO] [stderr]    |                                  ^^^^^^^^^                      ------ immutable borrow later used here
[INFO] [stderr]    |                                  |
[INFO] [stderr]    |                                  mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/snake-3f03f4bff0994850
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test snake::tests::snake_created_has_size_2 ... ok
[INFO] [stdout] test snake::tests::crawling_snake_has_moved ... ok
[INFO] [stdout] test snake::tests::growing_snake_has_increased_size ... ok
[INFO] [stdout] test snake::tests::crawling_snake_has_same_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3528c55478a279ca7f04df4b8abcc21680fd559aff57a9c0a1f39be8c81cdfba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3528c55478a279ca7f04df4b8abcc21680fd559aff57a9c0a1f39be8c81cdfba", kill_on_drop: false }`
[INFO] [stdout] 3528c55478a279ca7f04df4b8abcc21680fd559aff57a9c0a1f39be8c81cdfba
