[INFO] updating cached repository pipct/bananagrams-host
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pipct/bananagrams-host
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pipct/bananagrams-host" "work/ex/beta-1.38-1/sources/1.37.0/gh/pipct/bananagrams-host"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pipct/bananagrams-host'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pipct/bananagrams-host" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pipct/bananagrams-host"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pipct/bananagrams-host'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3bda27b51c5dbcb19d4c9ea391c0c74e9d87976f
[INFO] sha for GitHub repo pipct/bananagrams-host: 3bda27b51c5dbcb19d4c9ea391c0c74e9d87976f
[INFO] validating manifest of pipct/bananagrams-host 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 pipct/bananagrams-host 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 pipct/bananagrams-host
[INFO] finished frobbing pipct/bananagrams-host
[INFO] frobbed toml for pipct/bananagrams-host written to work/ex/beta-1.38-1/sources/1.37.0/gh/pipct/bananagrams-host/Cargo.toml
[INFO] started frobbing pipct/bananagrams-host
[INFO] finished frobbing pipct/bananagrams-host
[INFO] frobbed toml for pipct/bananagrams-host written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pipct/bananagrams-host/Cargo.toml
[INFO] crate pipct/bananagrams-host 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 pipct/bananagrams-host 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pipct/bananagrams-host:/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] 366b94e64091a709489b3c4fc987a0d8a4281751bff51c44714665c00235534b
[INFO] running `"docker" "start" "-a" "366b94e64091a709489b3c4fc987a0d8a4281751bff51c44714665c00235534b"`
[INFO] [stderr]    Compiling bananagrams-host v0.1.0 (/opt/crater/workdir)
[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]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=io::Result<u8>>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[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: consider prefixing 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] 
[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] 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] 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]     Finished dev [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `"docker" "inspect" "366b94e64091a709489b3c4fc987a0d8a4281751bff51c44714665c00235534b"`
[INFO] running `"docker" "rm" "-f" "366b94e64091a709489b3c4fc987a0d8a4281751bff51c44714665c00235534b"`
[INFO] [stdout] 366b94e64091a709489b3c4fc987a0d8a4281751bff51c44714665c00235534b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pipct/bananagrams-host:/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] e9f37612bb71c7ba7d82594dc964c51540916b4a6297b5be8fe2820965b14556
[INFO] running `"docker" "start" "-a" "e9f37612bb71c7ba7d82594dc964c51540916b4a6297b5be8fe2820965b14556"`
[INFO] [stderr]    Compiling bananagrams-host v0.1.0 (/opt/crater/workdir)
[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]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=io::Result<u8>>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[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: consider prefixing 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] 
[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] 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] 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]     Finished dev [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `"docker" "inspect" "e9f37612bb71c7ba7d82594dc964c51540916b4a6297b5be8fe2820965b14556"`
[INFO] running `"docker" "rm" "-f" "e9f37612bb71c7ba7d82594dc964c51540916b4a6297b5be8fe2820965b14556"`
[INFO] [stdout] e9f37612bb71c7ba7d82594dc964c51540916b4a6297b5be8fe2820965b14556
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pipct/bananagrams-host:/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] ae2742b8048a3637bf6c623e6baa90ce4a65baaccecefd2a8180429828c5812d
[INFO] running `"docker" "start" "-a" "ae2742b8048a3637bf6c623e6baa90ce4a65baaccecefd2a8180429828c5812d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bananagrams_host-98b22d1fc4d75299
[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" "ae2742b8048a3637bf6c623e6baa90ce4a65baaccecefd2a8180429828c5812d"`
[INFO] running `"docker" "rm" "-f" "ae2742b8048a3637bf6c623e6baa90ce4a65baaccecefd2a8180429828c5812d"`
[INFO] [stdout] ae2742b8048a3637bf6c623e6baa90ce4a65baaccecefd2a8180429828c5812d