[INFO] updating cached repository davidspies/rsatsolver
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/davidspies/rsatsolver
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/davidspies/rsatsolver" "work/ex/beta-1.38-1/sources/1.37.0/gh/davidspies/rsatsolver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/davidspies/rsatsolver'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/davidspies/rsatsolver" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/davidspies/rsatsolver"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/davidspies/rsatsolver'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b74949aae6531b6390652ad82ca60f0bf4ef1a09
[INFO] sha for GitHub repo davidspies/rsatsolver: b74949aae6531b6390652ad82ca60f0bf4ef1a09
[INFO] validating manifest of davidspies/rsatsolver 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 davidspies/rsatsolver 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 davidspies/rsatsolver
[INFO] finished frobbing davidspies/rsatsolver
[INFO] frobbed toml for davidspies/rsatsolver written to work/ex/beta-1.38-1/sources/1.37.0/gh/davidspies/rsatsolver/Cargo.toml
[INFO] started frobbing davidspies/rsatsolver
[INFO] finished frobbing davidspies/rsatsolver
[INFO] frobbed toml for davidspies/rsatsolver written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/davidspies/rsatsolver/Cargo.toml
[INFO] crate davidspies/rsatsolver 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 davidspies/rsatsolver 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-7/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/davidspies/rsatsolver:/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] 913382c18f530550f8b49a59198180dc73cbb3e54913365475887b0a10b53510
[INFO] running `"docker" "start" "-a" "913382c18f530550f8b49a59198180dc73cbb3e54913365475887b0a10b53510"`
[INFO] [stderr]    Compiling rsatsolver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `state::State`
[INFO] [stderr]  --> src/solver.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use state::State;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Disjunction`
[INFO] [stderr]   --> src/problem.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub struct Disjunction(HashMap<Variable, Sign>);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `DisjunctionIter`
[INFO] [stderr]   --> src/problem.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub type DisjunctionIter<'a> = hash_map::Iter<'a, Variable, Sign>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/problem.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/problem.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn iter(&self) -> DisjunctionIter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Problem`
[INFO] [stderr]   --> src/problem.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub struct Problem {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vars`
[INFO] [stderr]   --> src/problem.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn vars(&self) -> HashSet<Variable> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SignMap`
[INFO] [stderr]   --> src/problem.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub struct SignMap<V> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/problem.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn new<F: Fn(Sign) -> V>(init: F) -> SignMap<V> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `State`
[INFO] [stderr]  --> src/solver/state.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct State<'problem> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/solver/state.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new(problem: &'problem Problem) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `init_var`
[INFO] [stderr]   --> src/solver/state.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         fn init_var(&v: &Variable) -> (Variable, AssignInfo) {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_set`
[INFO] [stderr]   --> src/solver/state.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn is_set(&self, v: Variable) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sign_of`
[INFO] [stderr]   --> src/solver/state.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn sign_of(&self, v: Variable) -> Option<Sign> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_disjunction`
[INFO] [stderr]   --> src/solver/state.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn add_disjunction(&mut self, disjunction: &'problem Disjunction) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `assign`
[INFO] [stderr]   --> src/solver/state.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     pub fn assign(&mut self, var: Variable, sig: Sign) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unassign`
[INFO] [stderr]   --> src/solver/state.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn unassign(&mut self, var: Variable) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_and_clear_propagators`
[INFO] [stderr]    --> src/solver/state.rs:105:5
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn get_and_clear_propagators(&mut self) -> Vec<&'problem Disjunction> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_and_clear_pures`
[INFO] [stderr]    --> src/solver/state.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     pub fn get_and_clear_pures(&mut self) -> Vec<Variable> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `AssignInfo`
[INFO] [stderr]    --> src/solver/state.rs:113:1
[INFO] [stderr]     |
[INFO] [stderr] 113 | struct AssignInfo {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DisjunctionInfo`
[INFO] [stderr]    --> src/solver/state.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | struct DisjunctionInfo<'problem> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/solver/state.rs:125:5
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn new(state: &State, disjunction: &'problem Disjunction) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solver`
[INFO] [stderr]  --> src/solver.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Solver {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `"docker" "inspect" "913382c18f530550f8b49a59198180dc73cbb3e54913365475887b0a10b53510"`
[INFO] running `"docker" "rm" "-f" "913382c18f530550f8b49a59198180dc73cbb3e54913365475887b0a10b53510"`
[INFO] [stdout] 913382c18f530550f8b49a59198180dc73cbb3e54913365475887b0a10b53510
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/davidspies/rsatsolver:/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] 596b25cd5f1c2369a187f0febeceea374682ec9842150088da9196af635978a6
[INFO] running `"docker" "start" "-a" "596b25cd5f1c2369a187f0febeceea374682ec9842150088da9196af635978a6"`
[INFO] [stderr]    Compiling rsatsolver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `state::State`
[INFO] [stderr]  --> src/solver.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use state::State;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Disjunction`
[INFO] [stderr]   --> src/problem.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub struct Disjunction(HashMap<Variable, Sign>);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `DisjunctionIter`
[INFO] [stderr]   --> src/problem.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub type DisjunctionIter<'a> = hash_map::Iter<'a, Variable, Sign>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/problem.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/problem.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn iter(&self) -> DisjunctionIter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Problem`
[INFO] [stderr]   --> src/problem.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub struct Problem {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vars`
[INFO] [stderr]   --> src/problem.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     pub fn vars(&self) -> HashSet<Variable> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SignMap`
[INFO] [stderr]   --> src/problem.rs:62:1
[INFO] [stderr]    |
[INFO] [stderr] 62 | pub struct SignMap<V> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/problem.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn new<F: Fn(Sign) -> V>(init: F) -> SignMap<V> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `State`
[INFO] [stderr]  --> src/solver/state.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct State<'problem> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/solver/state.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new(problem: &'problem Problem) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `init_var`
[INFO] [stderr]   --> src/solver/state.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |         fn init_var(&v: &Variable) -> (Variable, AssignInfo) {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_set`
[INFO] [stderr]   --> src/solver/state.rs:41:5
[INFO] [stderr]    |
[INFO] [stderr] 41 |     pub fn is_set(&self, v: Variable) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sign_of`
[INFO] [stderr]   --> src/solver/state.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn sign_of(&self, v: Variable) -> Option<Sign> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_disjunction`
[INFO] [stderr]   --> src/solver/state.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn add_disjunction(&mut self, disjunction: &'problem Disjunction) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `assign`
[INFO] [stderr]   --> src/solver/state.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     pub fn assign(&mut self, var: Variable, sig: Sign) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unassign`
[INFO] [stderr]   --> src/solver/state.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     pub fn unassign(&mut self, var: Variable) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_and_clear_propagators`
[INFO] [stderr]    --> src/solver/state.rs:105:5
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn get_and_clear_propagators(&mut self) -> Vec<&'problem Disjunction> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_and_clear_pures`
[INFO] [stderr]    --> src/solver/state.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     pub fn get_and_clear_pures(&mut self) -> Vec<Variable> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `AssignInfo`
[INFO] [stderr]    --> src/solver/state.rs:113:1
[INFO] [stderr]     |
[INFO] [stderr] 113 | struct AssignInfo {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `DisjunctionInfo`
[INFO] [stderr]    --> src/solver/state.rs:118:1
[INFO] [stderr]     |
[INFO] [stderr] 118 | struct DisjunctionInfo<'problem> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/solver/state.rs:125:5
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn new(state: &State, disjunction: &'problem Disjunction) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Solver`
[INFO] [stderr]  --> src/solver.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | struct Solver {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "596b25cd5f1c2369a187f0febeceea374682ec9842150088da9196af635978a6"`
[INFO] running `"docker" "rm" "-f" "596b25cd5f1c2369a187f0febeceea374682ec9842150088da9196af635978a6"`
[INFO] [stdout] 596b25cd5f1c2369a187f0febeceea374682ec9842150088da9196af635978a6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/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/davidspies/rsatsolver:/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] ff7cf4d7d2c1e87a508854eb1e6534c1c469ecad554194e68a67f750b6d3b7cb
[INFO] running `"docker" "start" "-a" "ff7cf4d7d2c1e87a508854eb1e6534c1c469ecad554194e68a67f750b6d3b7cb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rsatsolver-e161d41e0ac937eb
[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" "ff7cf4d7d2c1e87a508854eb1e6534c1c469ecad554194e68a67f750b6d3b7cb"`
[INFO] running `"docker" "rm" "-f" "ff7cf4d7d2c1e87a508854eb1e6534c1c469ecad554194e68a67f750b6d3b7cb"`
[INFO] [stdout] ff7cf4d7d2c1e87a508854eb1e6534c1c469ecad554194e68a67f750b6d3b7cb