[INFO] updating cached repository mv86/hangman-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mv86/hangman-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mv86/hangman-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/mv86/hangman-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/mv86/hangman-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mv86/hangman-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mv86/hangman-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mv86/hangman-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c7e8f59f3488cc008ad4e6a33390c24462a3e72
[INFO] sha for GitHub repo mv86/hangman-rust: 7c7e8f59f3488cc008ad4e6a33390c24462a3e72
[INFO] validating manifest of mv86/hangman-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 mv86/hangman-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 mv86/hangman-rust
[INFO] finished frobbing mv86/hangman-rust
[INFO] frobbed toml for mv86/hangman-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/mv86/hangman-rust/Cargo.toml
[INFO] started frobbing mv86/hangman-rust
[INFO] finished frobbing mv86/hangman-rust
[INFO] frobbed toml for mv86/hangman-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/mv86/hangman-rust/Cargo.toml
[INFO] crate mv86/hangman-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 mv86/hangman-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-6/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/mv86/hangman-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] 1ef1e0478044c18f36e7355ed40f3732cae758d4cc369f644ce21e7d5e181513
[INFO] running `"docker" "start" "-a" "1ef1e0478044c18f36e7355ed40f3732cae758d4cc369f644ce21e7d5e181513"`
[INFO] [stderr]    Compiling hangman v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let mut player1 = player::new_player(String::from("Max"));
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `"docker" "inspect" "1ef1e0478044c18f36e7355ed40f3732cae758d4cc369f644ce21e7d5e181513"`
[INFO] running `"docker" "rm" "-f" "1ef1e0478044c18f36e7355ed40f3732cae758d4cc369f644ce21e7d5e181513"`
[INFO] [stdout] 1ef1e0478044c18f36e7355ed40f3732cae758d4cc369f644ce21e7d5e181513
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/mv86/hangman-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] 158421fb68ee63c39c6381861b981fd3b8545f8f2838872b11889423cf44641a
[INFO] running `"docker" "start" "-a" "158421fb68ee63c39c6381861b981fd3b8545f8f2838872b11889423cf44641a"`
[INFO] [stderr]    Compiling hangman v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let mut player1 = player::new_player(String::from("Max"));
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "158421fb68ee63c39c6381861b981fd3b8545f8f2838872b11889423cf44641a"`
[INFO] running `"docker" "rm" "-f" "158421fb68ee63c39c6381861b981fd3b8545f8f2838872b11889423cf44641a"`
[INFO] [stdout] 158421fb68ee63c39c6381861b981fd3b8545f8f2838872b11889423cf44641a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/mv86/hangman-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] 75fa45dc3e488bbd09cb4ea2404169b2969f54caaae5011d9136a609ce9f86a4
[INFO] running `"docker" "start" "-a" "75fa45dc3e488bbd09cb4ea2404169b2969f54caaae5011d9136a609ce9f86a4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[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] [stderr]      Running /opt/crater/target/debug/deps/hangman-ff46830ac9ff3058
[INFO] running `"docker" "inspect" "75fa45dc3e488bbd09cb4ea2404169b2969f54caaae5011d9136a609ce9f86a4"`
[INFO] running `"docker" "rm" "-f" "75fa45dc3e488bbd09cb4ea2404169b2969f54caaae5011d9136a609ce9f86a4"`
[INFO] [stdout] 75fa45dc3e488bbd09cb4ea2404169b2969f54caaae5011d9136a609ce9f86a4