[INFO] cloning repository https://github.com/pipct/bananagrams-host
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pipct/bananagrams-host" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpipct%2Fbananagrams-host", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpipct%2Fbananagrams-host'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3bda27b51c5dbcb19d4c9ea391c0c74e9d87976f
[INFO] testing pipct/bananagrams-host against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpipct%2Fbananagrams-host" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pipct/bananagrams-host on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pipct/bananagrams-host
[INFO] finished tweaking git repo https://github.com/pipct/bananagrams-host
[INFO] tweaked toml for git repo https://github.com/pipct/bananagrams-host written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/pipct/bananagrams-host already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84f92dceba76717888765c7ef4b55d7d74b519fcd078681af274b23b1f7e88e9
[INFO] running `Command { std: "docker" "start" "-a" "84f92dceba76717888765c7ef4b55d7d74b519fcd078681af274b23b1f7e88e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84f92dceba76717888765c7ef4b55d7d74b519fcd078681af274b23b1f7e88e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84f92dceba76717888765c7ef4b55d7d74b519fcd078681af274b23b1f7e88e9", kill_on_drop: false }`
[INFO] [stdout] 84f92dceba76717888765c7ef4b55d7d74b519fcd078681af274b23b1f7e88e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65caf3761f7a2d643df0c8593015b8bf824106d888d205e5f4e84561af44dfbc
[INFO] running `Command { std: "docker" "start" "-a" "65caf3761f7a2d643df0c8593015b8bf824106d888d205e5f4e84561af44dfbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling bananagrams-host v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::BufReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:47:36
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct MessageIterator<'a>(&'a mut Iterator<Item=io::Result<u8>>);
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 47 - struct MessageIterator<'a>(&'a mut Iterator<Item=io::Result<u8>>);
[INFO] [stdout] 47 + struct MessageIterator<'a>(&'a mut dyn Iterator<Item=io::Result<u8>>);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `GameState`
[INFO] [stdout]    --> src/main.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let mut GameState = GameState::Waiting(vec![false; 5]);
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_GameState`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let mut GameState = GameState::Waiting(vec![false; 5]);
[INFO] [stdout]     |         ----^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ProtocolError`
[INFO] [stdout]   --> src/main.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     ProtocolError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `MessageError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/main.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Clone, Eq, Hash, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnexpectedEOF`
[INFO] [stdout]   --> src/main.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     UnexpectedEOF,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `MessageError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/main.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Clone, Eq, Hash, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LetterError`
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     LetterError
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `MessageError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/main.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Clone, Eq, Hash, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readDigit` should have a snake case name
[INFO] [stdout]   --> src/main.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn readDigit(chr: u8) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^ help: convert the identifier to snake case: `read_digit`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readInt` should have a snake case name
[INFO] [stdout]   --> src/main.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn readInt<T>(seq: T) -> u64 where T: IntoIterator<Item=u8> {
[INFO] [stdout]    |    ^^^^^^^ help: convert the identifier to snake case: `read_int`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `GameState` should have a snake case name
[INFO] [stdout]    --> src/main.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let mut GameState = GameState::Waiting(vec![false; 5]);
[INFO] [stdout]     |             ^^^^^^^^^ help: convert the identifier to snake case: `game_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "65caf3761f7a2d643df0c8593015b8bf824106d888d205e5f4e84561af44dfbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65caf3761f7a2d643df0c8593015b8bf824106d888d205e5f4e84561af44dfbc", kill_on_drop: false }`
[INFO] [stdout] 65caf3761f7a2d643df0c8593015b8bf824106d888d205e5f4e84561af44dfbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98e1cb49a8e122b350bb41d5b6f35837f03b67b4f2e05970585b419dd55fb1cc
[INFO] running `Command { std: "docker" "start" "-a" "98e1cb49a8e122b350bb41d5b6f35837f03b67b4f2e05970585b419dd55fb1cc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bananagrams-host v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io::BufReader`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::io::BufReader;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:47:36
[INFO] [stdout]    |
[INFO] [stdout] 47 | struct MessageIterator<'a>(&'a mut Iterator<Item=io::Result<u8>>);
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 47 - struct MessageIterator<'a>(&'a mut Iterator<Item=io::Result<u8>>);
[INFO] [stdout] 47 + struct MessageIterator<'a>(&'a mut dyn Iterator<Item=io::Result<u8>>);
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `GameState`
[INFO] [stdout]    --> src/main.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let mut GameState = GameState::Waiting(vec![false; 5]);
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_GameState`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let mut GameState = GameState::Waiting(vec![false; 5]);
[INFO] [stdout]     |         ----^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ProtocolError`
[INFO] [stdout]   --> src/main.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     ProtocolError,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `MessageError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/main.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Clone, Eq, Hash, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `UnexpectedEOF`
[INFO] [stdout]   --> src/main.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     UnexpectedEOF,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `MessageError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/main.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Clone, Eq, Hash, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `LetterError`
[INFO] [stdout]   --> src/main.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     LetterError
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `MessageError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/main.rs:40:10
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[derive(Debug, Clone, Eq, Hash, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readDigit` should have a snake case name
[INFO] [stdout]   --> src/main.rs:49:4
[INFO] [stdout]    |
[INFO] [stdout] 49 | fn readDigit(chr: u8) -> u8 {
[INFO] [stdout]    |    ^^^^^^^^^ help: convert the identifier to snake case: `read_digit`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `readInt` should have a snake case name
[INFO] [stdout]   --> src/main.rs:57:4
[INFO] [stdout]    |
[INFO] [stdout] 57 | fn readInt<T>(seq: T) -> u64 where T: IntoIterator<Item=u8> {
[INFO] [stdout]    |    ^^^^^^^ help: convert the identifier to snake case: `read_int`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `GameState` should have a snake case name
[INFO] [stdout]    --> src/main.rs:122:13
[INFO] [stdout]     |
[INFO] [stdout] 122 |     let mut GameState = GameState::Waiting(vec![false; 5]);
[INFO] [stdout]     |             ^^^^^^^^^ help: convert the identifier to snake case: `game_state`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.01s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/bananagrams_host-113986c2894d4834)
[INFO] running `Command { std: "docker" "inspect" "98e1cb49a8e122b350bb41d5b6f35837f03b67b4f2e05970585b419dd55fb1cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98e1cb49a8e122b350bb41d5b6f35837f03b67b4f2e05970585b419dd55fb1cc", kill_on_drop: false }`
[INFO] [stdout] 98e1cb49a8e122b350bb41d5b6f35837f03b67b4f2e05970585b419dd55fb1cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 83dd7fbf0d7eda4850ee680bf7bdb7013d76f54cb3d5ffbc081f2aea2feab3ce
[INFO] running `Command { std: "docker" "start" "-a" "83dd7fbf0d7eda4850ee680bf7bdb7013d76f54cb3d5ffbc081f2aea2feab3ce", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::io::BufReader`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::io::BufReader;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:47:36
[INFO] [stderr]    |
[INFO] [stderr] 47 | struct MessageIterator<'a>(&'a mut Iterator<Item=io::Result<u8>>);
[INFO] [stderr]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 47 - struct MessageIterator<'a>(&'a mut Iterator<Item=io::Result<u8>>);
[INFO] [stderr] 47 + struct MessageIterator<'a>(&'a mut dyn Iterator<Item=io::Result<u8>>);
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `GameState`
[INFO] [stderr]    --> src/main.rs:122:13
[INFO] [stderr]     |
[INFO] [stderr] 122 |     let mut GameState = GameState::Waiting(vec![false; 5]);
[INFO] [stderr]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_GameState`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |     let mut GameState = GameState::Waiting(vec![false; 5]);
[INFO] [stderr]     |         ----^^^^^^^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ProtocolError`
[INFO] [stderr]   --> src/main.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     ProtocolError,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `MessageError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/main.rs:40:10
[INFO] [stderr]    |
[INFO] [stderr] 40 | #[derive(Debug, Clone, Eq, Hash, PartialEq)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UnexpectedEOF`
[INFO] [stderr]   --> src/main.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     UnexpectedEOF,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `MessageError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/main.rs:40:10
[INFO] [stderr]    |
[INFO] [stderr] 40 | #[derive(Debug, Clone, Eq, Hash, PartialEq)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `LetterError`
[INFO] [stderr]   --> src/main.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     LetterError
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: `MessageError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]   --> src/main.rs:40:10
[INFO] [stderr]    |
[INFO] [stderr] 40 | #[derive(Debug, Clone, Eq, Hash, PartialEq)]
[INFO] [stderr]    |          ^^^^^  ^^^^^
[INFO] [stderr]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: function `readDigit` should have a snake case name
[INFO] [stderr]   --> src/main.rs:49:4
[INFO] [stderr]    |
[INFO] [stderr] 49 | fn readDigit(chr: u8) -> u8 {
[INFO] [stderr]    |    ^^^^^^^^^ help: convert the identifier to snake case: `read_digit`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `readInt` should have a snake case name
[INFO] [stderr]   --> src/main.rs:57:4
[INFO] [stderr]    |
[INFO] [stderr] 57 | fn readInt<T>(seq: T) -> u64 where T: IntoIterator<Item=u8> {
[INFO] [stderr]    |    ^^^^^^^ help: convert the identifier to snake case: `read_int`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `GameState` should have a snake case name
[INFO] [stderr]    --> src/main.rs:122:13
[INFO] [stderr]     |
[INFO] [stderr] 122 |     let mut GameState = GameState::Waiting(vec![false; 5]);
[INFO] [stderr]     |             ^^^^^^^^^ help: convert the identifier to snake case: `game_state`
[INFO] [stderr] 
[INFO] [stderr] warning: `bananagrams-host` (bin "bananagrams-host" test) generated 10 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/bananagrams_host-113986c2894d4834)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "83dd7fbf0d7eda4850ee680bf7bdb7013d76f54cb3d5ffbc081f2aea2feab3ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83dd7fbf0d7eda4850ee680bf7bdb7013d76f54cb3d5ffbc081f2aea2feab3ce", kill_on_drop: false }`
[INFO] [stdout] 83dd7fbf0d7eda4850ee680bf7bdb7013d76f54cb3d5ffbc081f2aea2feab3ce