[INFO] updating cached repository jawline/mdp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jawline/mdp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jawline/mdp" "work/ex/beta-1.38-1/sources/1.37.0/gh/jawline/mdp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jawline/mdp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jawline/mdp" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jawline/mdp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jawline/mdp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cf4618d31e21c93e57bfc8082970147d3ef1f769
[INFO] sha for GitHub repo jawline/mdp: cf4618d31e21c93e57bfc8082970147d3ef1f769
[INFO] validating manifest of jawline/mdp 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 jawline/mdp 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 jawline/mdp
[INFO] finished frobbing jawline/mdp
[INFO] frobbed toml for jawline/mdp written to work/ex/beta-1.38-1/sources/1.37.0/gh/jawline/mdp/Cargo.toml
[INFO] started frobbing jawline/mdp
[INFO] finished frobbing jawline/mdp
[INFO] frobbed toml for jawline/mdp written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jawline/mdp/Cargo.toml
[INFO] crate jawline/mdp 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 jawline/mdp 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/jawline/mdp:/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] 139e7ed60dc19cceaadcd69c9a2c82fa8b0acdedc9590641f5fbc208caf864c4
[INFO] running `"docker" "start" "-a" "139e7ed60dc19cceaadcd69c9a2c82fa8b0acdedc9590641f5fbc208caf864c4"`
[INFO] [stderr]    Compiling markov v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/matrix/mod.rs:13:46
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn print_matrix<T: Copy + Display>(mat: &Matrix<T>) {
[INFO] [stderr]    |                                              ^^^^^^^^^ help: use `dyn`: `dyn Matrix<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `GreedyAgent`
[INFO] [stderr]   --> src/main.rs:11:27
[INFO] [stderr]    |
[INFO] [stderr] 11 | use strategies::greedy::{ GreedyAgent };
[INFO] [stderr]    |                           ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MarkovChainAgent`
[INFO] [stderr]   --> src/main.rs:12:27
[INFO] [stderr]    |
[INFO] [stderr] 12 | use strategies::markov::{ MarkovChainAgent };
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/strategies/greedy.rs:15:28
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn select_transfer(&self, from: usize, possible: &Vec<(usize, f32, f32)>) -> Option<usize> {
[INFO] [stderr]    |                               ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/greedy.rs:26:72
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn select_reward(&self, process: &Process<T>, from: usize, to: usize, success: bool) -> f32 {
[INFO] [stderr]    |                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `process`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:30
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                 ^^^^^^^ help: consider prefixing with an underscore: `_process`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:52
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                       ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:67
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                      ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:80
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                   ^^ help: consider prefixing with an underscore: `_to`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reward`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:91
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                              ^^^^^^ help: consider prefixing with an underscore: `_reward`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:104
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/strategies/markov.rs:16:28
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn select_transfer(&self, from: usize, possible: &Vec<(usize, f32, f32)>) -> Option<usize> {
[INFO] [stderr]    |                               ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/markov.rs:36:72
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn select_reward(&self, process: &Process<T>, from: usize, to: usize, success: bool) -> f32 {
[INFO] [stderr]    |                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `process`
[INFO] [stderr]   --> src/strategies/markov.rs:42:30
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                 ^^^^^^^ help: consider prefixing with an underscore: `_process`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/strategies/markov.rs:42:52
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                       ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/strategies/markov.rs:42:67
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                      ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]   --> src/strategies/markov.rs:42:80
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                   ^^ help: consider prefixing with an underscore: `_to`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reward`
[INFO] [stderr]   --> src/strategies/markov.rs:42:91
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                              ^^^^^^ help: consider prefixing with an underscore: `_reward`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/markov.rs:42:104
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `process`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:11:25
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn try_transfer(&self, process: &Process<T>, from: usize, to: usize) -> bool {
[INFO] [stderr]    |                            ^^^^^^^ help: consider prefixing with an underscore: `_process`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:11:47
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn try_transfer(&self, process: &Process<T>, from: usize, to: usize) -> bool {
[INFO] [stderr]    |                                                  ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:11:60
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn try_transfer(&self, process: &Process<T>, from: usize, to: usize) -> bool {
[INFO] [stderr]    |                                                               ^^ help: consider prefixing with an underscore: `_to`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:54:72
[INFO] [stderr]    |
[INFO] [stderr] 54 |     fn select_reward(&self, process: &Process<T>, from: usize, to: usize, success: bool) -> f32 {
[INFO] [stderr]    |                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `process`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:58:30
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {
[INFO] [stderr]    |                                 ^^^^^^^ help: consider prefixing with an underscore: `_process`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:58:104
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {
[INFO] [stderr]    |                                                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DenseMatrix`
[INFO] [stderr]  --> src/matrix/dense.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct DenseMatrix<T: Copy> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/matrix/dense.rs:11:2
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(default: T, width: usize, height: usize) -> DenseMatrix<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `GreedyAgent`
[INFO] [stderr]  --> src/strategies/greedy.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct GreedyAgent {}
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MarkovChainAgent`
[INFO] [stderr]  --> src/strategies/markov.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct MarkovChainAgent {}
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `"docker" "inspect" "139e7ed60dc19cceaadcd69c9a2c82fa8b0acdedc9590641f5fbc208caf864c4"`
[INFO] running `"docker" "rm" "-f" "139e7ed60dc19cceaadcd69c9a2c82fa8b0acdedc9590641f5fbc208caf864c4"`
[INFO] [stdout] 139e7ed60dc19cceaadcd69c9a2c82fa8b0acdedc9590641f5fbc208caf864c4
[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/jawline/mdp:/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] dd54a527f76247da294eb30870220baeebd731372f3de8f4667fd48b1c121ec0
[INFO] running `"docker" "start" "-a" "dd54a527f76247da294eb30870220baeebd731372f3de8f4667fd48b1c121ec0"`
[INFO] [stderr]    Compiling markov v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/matrix/mod.rs:13:46
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub fn print_matrix<T: Copy + Display>(mat: &Matrix<T>) {
[INFO] [stderr]    |                                              ^^^^^^^^^ help: use `dyn`: `dyn Matrix<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `GreedyAgent`
[INFO] [stderr]   --> src/main.rs:11:27
[INFO] [stderr]    |
[INFO] [stderr] 11 | use strategies::greedy::{ GreedyAgent };
[INFO] [stderr]    |                           ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MarkovChainAgent`
[INFO] [stderr]   --> src/main.rs:12:27
[INFO] [stderr]    |
[INFO] [stderr] 12 | use strategies::markov::{ MarkovChainAgent };
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/strategies/greedy.rs:15:28
[INFO] [stderr]    |
[INFO] [stderr] 15 |     fn select_transfer(&self, from: usize, possible: &Vec<(usize, f32, f32)>) -> Option<usize> {
[INFO] [stderr]    |                               ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/greedy.rs:26:72
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn select_reward(&self, process: &Process<T>, from: usize, to: usize, success: bool) -> f32 {
[INFO] [stderr]    |                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `process`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:30
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                 ^^^^^^^ help: consider prefixing with an underscore: `_process`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:52
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                       ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:67
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                      ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:80
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                   ^^ help: consider prefixing with an underscore: `_to`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reward`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:91
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                              ^^^^^^ help: consider prefixing with an underscore: `_reward`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/greedy.rs:32:104
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/strategies/markov.rs:16:28
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn select_transfer(&self, from: usize, possible: &Vec<(usize, f32, f32)>) -> Option<usize> {
[INFO] [stderr]    |                               ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/markov.rs:36:72
[INFO] [stderr]    |
[INFO] [stderr] 36 |     fn select_reward(&self, process: &Process<T>, from: usize, to: usize, success: bool) -> f32 {
[INFO] [stderr]    |                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `process`
[INFO] [stderr]   --> src/strategies/markov.rs:42:30
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                 ^^^^^^^ help: consider prefixing with an underscore: `_process`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/strategies/markov.rs:42:52
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                       ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/strategies/markov.rs:42:67
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                      ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]   --> src/strategies/markov.rs:42:80
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                   ^^ help: consider prefixing with an underscore: `_to`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `reward`
[INFO] [stderr]   --> src/strategies/markov.rs:42:91
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                              ^^^^^^ help: consider prefixing with an underscore: `_reward`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/markov.rs:42:104
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {}
[INFO] [stderr]    |                                                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `process`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:11:25
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn try_transfer(&self, process: &Process<T>, from: usize, to: usize) -> bool {
[INFO] [stderr]    |                            ^^^^^^^ help: consider prefixing with an underscore: `_process`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:11:47
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn try_transfer(&self, process: &Process<T>, from: usize, to: usize) -> bool {
[INFO] [stderr]    |                                                  ^^^^ help: consider prefixing with an underscore: `_from`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:11:60
[INFO] [stderr]    |
[INFO] [stderr] 11 |     fn try_transfer(&self, process: &Process<T>, from: usize, to: usize) -> bool {
[INFO] [stderr]    |                                                               ^^ help: consider prefixing with an underscore: `_to`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:54:72
[INFO] [stderr]    |
[INFO] [stderr] 54 |     fn select_reward(&self, process: &Process<T>, from: usize, to: usize, success: bool) -> f32 {
[INFO] [stderr]    |                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `process`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:58:30
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {
[INFO] [stderr]    |                                 ^^^^^^^ help: consider prefixing with an underscore: `_process`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `success`
[INFO] [stderr]   --> src/strategies/reinforcement/naive.rs:58:104
[INFO] [stderr]    |
[INFO] [stderr] 58 |     fn punish_action(&mut self, process: &Process<T>, state: &State, from: usize, to: usize, reward: f32, success: bool) {
[INFO] [stderr]    |                                                                                                           ^^^^^^^ help: consider prefixing with an underscore: `_success`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DenseMatrix`
[INFO] [stderr]  --> src/matrix/dense.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct DenseMatrix<T: Copy> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/matrix/dense.rs:11:2
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(default: T, width: usize, height: usize) -> DenseMatrix<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `GreedyAgent`
[INFO] [stderr]  --> src/strategies/greedy.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct GreedyAgent {}
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MarkovChainAgent`
[INFO] [stderr]  --> src/strategies/markov.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct MarkovChainAgent {}
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `"docker" "inspect" "dd54a527f76247da294eb30870220baeebd731372f3de8f4667fd48b1c121ec0"`
[INFO] running `"docker" "rm" "-f" "dd54a527f76247da294eb30870220baeebd731372f3de8f4667fd48b1c121ec0"`
[INFO] [stdout] dd54a527f76247da294eb30870220baeebd731372f3de8f4667fd48b1c121ec0
[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/jawline/mdp:/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] 903a6eeb694052d623b10947a67ac8ed0aea21a2bf16e7f671e162be707a0b90
[INFO] running `"docker" "start" "-a" "903a6eeb694052d623b10947a67ac8ed0aea21a2bf16e7f671e162be707a0b90"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/markov-221bebc64d3b38ae
[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" "903a6eeb694052d623b10947a67ac8ed0aea21a2bf16e7f671e162be707a0b90"`
[INFO] running `"docker" "rm" "-f" "903a6eeb694052d623b10947a67ac8ed0aea21a2bf16e7f671e162be707a0b90"`
[INFO] [stdout] 903a6eeb694052d623b10947a67ac8ed0aea21a2bf16e7f671e162be707a0b90