[INFO] updating cached repository https://github.com/shinkwhek/SATsolver
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] be638a5296a4ad1884c0952d59ed7ba62739ccc9
[INFO] testing shinkwhek/SATsolver against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshinkwhek%2FSATsolver" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shinkwhek/SATsolver on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/shinkwhek/SATsolver
[INFO] finished tweaking git repo https://github.com/shinkwhek/SATsolver
[INFO] tweaked toml for git repo https://github.com/shinkwhek/SATsolver written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/shinkwhek/SATsolver already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-12/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d3602d505267280b961f2649f419cfa6e99dbc4a4b5cff0eb80ad85260faa536
[INFO] running `"docker" "start" "-a" "d3602d505267280b961f2649f419cfa6e99dbc4a4b5cff0eb80ad85260faa536"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling satsolver v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: type alias is never used: `Cnf`
[INFO] [stderr]  --> src/lexer.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Cnf = Vec<Vec<isize>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lexer`
[INFO] [stderr]  --> src/lexer.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Lexer;
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/lexer.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(filename: &str) -> Cnf {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_line`
[INFO] [stderr]   --> src/lexer.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn parse_line(s: &str) -> Vec<isize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/solver.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(cnf: Cnf) -> Dpll {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `solver`
[INFO] [stderr]   --> src/solver.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn solver(self) -> Option<Self> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unit_propagation`
[INFO] [stderr]   --> src/solver.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn unit_propagation(self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `assign`
[INFO] [stderr]   --> src/solver.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn assign(&self, lit: Literal) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `retain_lit`
[INFO] [stderr]   --> src/solver.rs:64:4
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn retain_lit(mut cl: Clause, lit: Literal) -> Clause {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `exists_empty_clause`
[INFO] [stderr]   --> src/solver.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     fn exists_empty_clause(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_unit_literal`
[INFO] [stderr]   --> src/solver.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn get_unit_literal(&self) -> Option<Literal> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `heuristic_select`
[INFO] [stderr]   --> src/solver.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn heuristic_select(&self) -> Literal {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/solver.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.50s
[INFO] running `"docker" "inspect" "d3602d505267280b961f2649f419cfa6e99dbc4a4b5cff0eb80ad85260faa536"`
[INFO] running `"docker" "rm" "-f" "d3602d505267280b961f2649f419cfa6e99dbc4a4b5cff0eb80ad85260faa536"`
[INFO] [stdout] d3602d505267280b961f2649f419cfa6e99dbc4a4b5cff0eb80ad85260faa536
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ebb0c0f48b317e6d26df00c3e94a6ee3f91abf36176d8fc6a6c5cc3aba1a927b
[INFO] running `"docker" "start" "-a" "ebb0c0f48b317e6d26df00c3e94a6ee3f91abf36176d8fc6a6c5cc3aba1a927b"`
[INFO] [stderr]    Compiling satsolver v1.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: type alias is never used: `Cnf`
[INFO] [stderr]  --> src/lexer.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Cnf = Vec<Vec<isize>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lexer`
[INFO] [stderr]  --> src/lexer.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Lexer;
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/lexer.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(filename: &str) -> Cnf {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_line`
[INFO] [stderr]   --> src/lexer.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn parse_line(s: &str) -> Vec<isize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/solver.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(cnf: Cnf) -> Dpll {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `solver`
[INFO] [stderr]   --> src/solver.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn solver(self) -> Option<Self> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unit_propagation`
[INFO] [stderr]   --> src/solver.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn unit_propagation(self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `assign`
[INFO] [stderr]   --> src/solver.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn assign(&self, lit: Literal) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `retain_lit`
[INFO] [stderr]   --> src/solver.rs:64:4
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn retain_lit(mut cl: Clause, lit: Literal) -> Clause {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `exists_empty_clause`
[INFO] [stderr]   --> src/solver.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     fn exists_empty_clause(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_unit_literal`
[INFO] [stderr]   --> src/solver.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn get_unit_literal(&self) -> Option<Literal> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `heuristic_select`
[INFO] [stderr]   --> src/solver.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn heuristic_select(&self) -> Literal {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/solver.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Cnf`
[INFO] [stderr]  --> src/lexer.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Cnf = Vec<Vec<isize>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lexer`
[INFO] [stderr]  --> src/lexer.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Lexer;
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/lexer.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(filename: &str) -> Cnf {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_line`
[INFO] [stderr]   --> src/lexer.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn parse_line(s: &str) -> Vec<isize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.04s
[INFO] running `"docker" "inspect" "ebb0c0f48b317e6d26df00c3e94a6ee3f91abf36176d8fc6a6c5cc3aba1a927b"`
[INFO] running `"docker" "rm" "-f" "ebb0c0f48b317e6d26df00c3e94a6ee3f91abf36176d8fc6a6c5cc3aba1a927b"`
[INFO] [stdout] ebb0c0f48b317e6d26df00c3e94a6ee3f91abf36176d8fc6a6c5cc3aba1a927b
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stdout] face037c58afb12b7419508fb8a09f0d15472aa1f9ba717f1c5360678713a45f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "face037c58afb12b7419508fb8a09f0d15472aa1f9ba717f1c5360678713a45f"`
[INFO] [stderr] warning: type alias is never used: `Cnf`
[INFO] [stderr]  --> src/lexer.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Cnf = Vec<Vec<isize>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lexer`
[INFO] [stderr]  --> src/lexer.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Lexer;
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/lexer.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(filename: &str) -> Cnf {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_line`
[INFO] [stderr]   --> src/lexer.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn parse_line(s: &str) -> Vec<isize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Cnf`
[INFO] [stderr]  --> src/lexer.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Cnf = Vec<Vec<isize>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Lexer`
[INFO] [stderr]  --> src/lexer.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Lexer;
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/lexer.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn new(filename: &str) -> Cnf {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_line`
[INFO] [stderr]   --> src/lexer.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn parse_line(s: &str) -> Vec<isize> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/solver.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn new(cnf: Cnf) -> Dpll {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `solver`
[INFO] [stderr]   --> src/solver.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn solver(self) -> Option<Self> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unit_propagation`
[INFO] [stderr]   --> src/solver.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     fn unit_propagation(self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `assign`
[INFO] [stderr]   --> src/solver.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     fn assign(&self, lit: Literal) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `retain_lit`
[INFO] [stderr]   --> src/solver.rs:64:4
[INFO] [stderr]    |
[INFO] [stderr] 64 | fn retain_lit(mut cl: Clause, lit: Literal) -> Clause {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `exists_empty_clause`
[INFO] [stderr]   --> src/solver.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     fn exists_empty_clause(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_unit_literal`
[INFO] [stderr]   --> src/solver.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     fn get_unit_literal(&self) -> Option<Literal> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `heuristic_select`
[INFO] [stderr]   --> src/solver.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     fn heuristic_select(&self) -> Literal {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/solver.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/satsolver-1afb4e92d0092a48
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test solver::unit_propagation_test_2 ... ok
[INFO] [stdout] test solver::unit_propagation_test_1 ... ok
[INFO] [stdout] test solver::is_empty_test ... ok
[INFO] [stdout] test solver::retain_lit_test ... ok
[INFO] [stdout] test solver::solver_test_1 ... ok
[INFO] [stdout] test solver::exists_empty_clause_test ... ok
[INFO] [stdout] test solver::solver_test_2 ... ok
[INFO] [stdout] test solver::get_unit_literal_test ... ok
[INFO] [stdout] test solver::heuristic_select_test ... ok
[INFO] [stdout] test solver::assign_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/satsolver-1ff45c171f398a57
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test solver::assign_test ... ok
[INFO] [stdout] test solver::solver_test_2 ... ok
[INFO] [stdout] test solver::unit_propagation_test_2 ... ok
[INFO] [stdout] test solver::solver_test_1 ... ok
[INFO] [stdout] test solver::is_empty_test ... ok
[INFO] [stdout] test solver::retain_lit_test ... ok
[INFO] [stdout] test solver::exists_empty_clause_test ... ok
[INFO] [stdout] test solver::get_unit_literal_test ... ok
[INFO] [stdout] test solver::heuristic_select_test ... ok
[INFO] [stdout] test solver::unit_propagation_test_1 ... ok
[INFO] [stderr]    Doc-tests satsolver
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "face037c58afb12b7419508fb8a09f0d15472aa1f9ba717f1c5360678713a45f"`
[INFO] running `"docker" "rm" "-f" "face037c58afb12b7419508fb8a09f0d15472aa1f9ba717f1c5360678713a45f"`
[INFO] [stdout] face037c58afb12b7419508fb8a09f0d15472aa1f9ba717f1c5360678713a45f