Nov 16 19:18:39.485 INFO testing mohas556/cassowaryr against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982
Nov 16 19:18:39.485 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-4/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 16 19:18:39.724 INFO [stdout] 145951d878b10929ca3931035018b10c3db4a6eda9bffa35f3dc0f5479e45d82
Nov 16 19:18:39.739 INFO running `"docker" "start" "-a" "145951d878b10929ca3931035018b10c3db4a6eda9bffa35f3dc0f5479e45d82"`
Nov 16 19:18:40.447 INFO [stderr] usermod: no changes
Nov 16 19:18:40.475 INFO [stderr]    Compiling cassowaryr v0.1.0 (/source)
Nov 16 19:18:40.687 INFO [stderr] warning: unnecessary parentheses around `if` condition
Nov 16 19:18:40.687 INFO [stderr]     --> src/lib.rs:2055:36
Nov 16 19:18:40.687 INFO [stderr]      |
Nov 16 19:18:40.687 INFO [stderr] 2055 |                                 if (val > 0f64 && var.pivotable()) {
Nov 16 19:18:40.687 INFO [stderr]      |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Nov 16 19:18:40.687 INFO [stderr]      |
Nov 16 19:18:40.687 INFO [stderr]      = note: #[warn(unused_parens)] on by default
Nov 16 19:18:40.687 INFO [stderr] 
Nov 16 19:18:40.970 INFO [stderr] warning: value assigned to `prev_edit_constant` is never read
Nov 16 19:18:40.970 INFO [stderr]     --> src/lib.rs:1838:25
Nov 16 19:18:40.970 INFO [stderr]      |
Nov 16 19:18:40.970 INFO [stderr] 1838 |                         prev_edit_constant =  some_val;
Nov 16 19:18:40.970 INFO [stderr]      |                         ^^^^^^^^^^^^^^^^^^
Nov 16 19:18:40.970 INFO [stderr]      |
Nov 16 19:18:40.970 INFO [stderr]      = note: #[warn(unused_assignments)] on by default
Nov 16 19:18:40.970 INFO [stderr] 
Nov 16 19:18:40.971 INFO [stderr] warning: value assigned to `r` is never read
Nov 16 19:18:40.971 INFO [stderr]     --> src/lib.rs:2006:25
Nov 16 19:18:40.971 INFO [stderr]      |
Nov 16 19:18:40.971 INFO [stderr] 2006 |                 let mut r: f64 = 0f64;
Nov 16 19:18:40.971 INFO [stderr]      |                         ^
Nov 16 19:18:40.971 INFO [stderr] 
Nov 16 19:18:42.095 INFO [stderr] warning: value assigned to `prev_edit_constant` is never read
Nov 16 19:18:42.095 INFO [stderr]     --> src/main.rs:1830:7
Nov 16 19:18:42.095 INFO [stderr]      |
Nov 16 19:18:42.095 INFO [stderr] 1830 |                         prev_edit_constant =  some_val;
Nov 16 19:18:42.095 INFO [stderr]      |                         ^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.095 INFO [stderr]      |
Nov 16 19:18:42.095 INFO [stderr]      = note: #[warn(unused_assignments)] on by default
Nov 16 19:18:42.095 INFO [stderr] 
Nov 16 19:18:42.095 INFO [stderr] warning: value assigned to `r` is never read
Nov 16 19:18:42.095 INFO [stderr]     --> src/main.rs:1997:25
Nov 16 19:18:42.095 INFO [stderr]      |
Nov 16 19:18:42.095 INFO [stderr] 1997 |                 let mut r: f64 = 0f64;
Nov 16 19:18:42.095 INFO [stderr]      |                         ^
Nov 16 19:18:42.095 INFO [stderr] 
Nov 16 19:18:42.139 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.139 INFO [stderr]    --> src/main.rs:863:14
Nov 16 19:18:42.139 INFO [stderr]     |
Nov 16 19:18:42.139 INFO [stderr] 863 |             let mut expr = Rc::new(Expression::new_blank());
Nov 16 19:18:42.139 INFO [stderr]     |                 ----^^^^
Nov 16 19:18:42.139 INFO [stderr]     |                 |
Nov 16 19:18:42.139 INFO [stderr]     |                 help: remove this `mut`
Nov 16 19:18:42.139 INFO [stderr]     |
Nov 16 19:18:42.139 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 16 19:18:42.139 INFO [stderr] 
Nov 16 19:18:42.139 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.139 INFO [stderr]    --> src/main.rs:915:21
Nov 16 19:18:42.141 INFO [stderr]     |
Nov 16 19:18:42.141 INFO [stderr] 915 |                 let mut expr = Rc::new(Expression::new_single_variable(var_two));
Nov 16 19:18:42.141 INFO [stderr]     |                     ----^^^^
Nov 16 19:18:42.141 INFO [stderr]     |                     |
Nov 16 19:18:42.141 INFO [stderr]     |                     help: remove this `mut`
Nov 16 19:18:42.142 INFO [stderr] 
Nov 16 19:18:42.142 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.142 INFO [stderr]    --> src/main.rs:937:17
Nov 16 19:18:42.142 INFO [stderr]     |
Nov 16 19:18:42.142 INFO [stderr] 937 |             let mut cexpr: Rc<Expression> = expr.clone();
Nov 16 19:18:42.142 INFO [stderr]     |                 ----^^^^^
Nov 16 19:18:42.142 INFO [stderr]     |                 |
Nov 16 19:18:42.144 INFO [stderr]     |                 help: remove this `mut`
Nov 16 19:18:42.144 INFO [stderr] 
Nov 16 19:18:42.144 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.144 INFO [stderr]    --> src/main.rs:966:17
Nov 16 19:18:42.144 INFO [stderr]     |
Nov 16 19:18:42.144 INFO [stderr] 966 |             let mut expr = expr_two.clone();
Nov 16 19:18:42.144 INFO [stderr]     |                 ----^^^^
Nov 16 19:18:42.144 INFO [stderr]     |                 |
Nov 16 19:18:42.144 INFO [stderr]     |                 help: remove this `mut`
Nov 16 19:18:42.146 INFO [stderr] 
Nov 16 19:18:42.150 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.151 INFO [stderr]     --> src/main.rs:1146:17
Nov 16 19:18:42.151 INFO [stderr]      |
Nov 16 19:18:42.151 INFO [stderr] 1146 |             let mut expr = Rc::new(Expression::new_blank());
Nov 16 19:18:42.151 INFO [stderr]      |                 ----^^^^
Nov 16 19:18:42.151 INFO [stderr]      |                 |
Nov 16 19:18:42.151 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:42.163 INFO [stderr] 
Nov 16 19:18:42.175 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.175 INFO [stderr]     --> src/main.rs:1268:17
Nov 16 19:18:42.176 INFO [stderr]      |
Nov 16 19:18:42.176 INFO [stderr] 1268 |             let mut prev_edit_constant = 0f64;
Nov 16 19:18:42.177 INFO [stderr]      |                 ----^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.177 INFO [stderr]      |                 |
Nov 16 19:18:42.177 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:42.177 INFO [stderr] 
Nov 16 19:18:42.178 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.178 INFO [stderr]     --> src/main.rs:1270:17
Nov 16 19:18:42.178 INFO [stderr]      |
Nov 16 19:18:42.179 INFO [stderr] 1270 |             let mut expr = self.new_expression(constraint,
Nov 16 19:18:42.179 INFO [stderr]      |                 ----^^^^
Nov 16 19:18:42.179 INFO [stderr]      |                 |
Nov 16 19:18:42.180 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:42.180 INFO [stderr] 
Nov 16 19:18:42.180 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.181 INFO [stderr]     --> src/main.rs:1389:22
Nov 16 19:18:42.181 INFO [stderr]      |
Nov 16 19:18:42.181 INFO [stderr] 1389 |                 Some(mut expr) => {
Nov 16 19:18:42.182 INFO [stderr]      |                      ----^^^^
Nov 16 19:18:42.182 INFO [stderr]      |                      |
Nov 16 19:18:42.182 INFO [stderr]      |                      help: remove this `mut`
Nov 16 19:18:42.187 INFO [stderr] 
Nov 16 19:18:42.199 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.199 INFO [stderr]     --> src/main.rs:1429:17
Nov 16 19:18:42.200 INFO [stderr]      |
Nov 16 19:18:42.200 INFO [stderr] 1429 |             let mut obj_row: Rc<Expression> = self.get_row_expression(&obj).unwrap();
Nov 16 19:18:42.200 INFO [stderr]      |                 ----^^^^^^^
Nov 16 19:18:42.201 INFO [stderr]      |                 |
Nov 16 19:18:42.201 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:42.201 INFO [stderr] 
Nov 16 19:18:42.202 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.202 INFO [stderr]     --> src/main.rs:1432:17
Nov 16 19:18:42.202 INFO [stderr]      |
Nov 16 19:18:42.203 INFO [stderr] 1432 |             let mut error_option = self.error_vars.borrow_mut().get(constraint).map(|x| x.clone());
Nov 16 19:18:42.203 INFO [stderr]      |                 ----^^^^^^^^^^^^
Nov 16 19:18:42.203 INFO [stderr]      |                 |
Nov 16 19:18:42.204 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:42.204 INFO [stderr] 
Nov 16 19:18:42.219 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.219 INFO [stderr]     --> src/main.rs:1760:25
Nov 16 19:18:42.220 INFO [stderr]      |
Nov 16 19:18:42.220 INFO [stderr] 1760 |                     let mut row_expr = self.get_row_expression(&obj).unwrap();
Nov 16 19:18:42.221 INFO [stderr]      |                         ----^^^^^^^^
Nov 16 19:18:42.221 INFO [stderr]      |                         |
Nov 16 19:18:42.221 INFO [stderr]      |                         help: remove this `mut`
Nov 16 19:18:42.221 INFO [stderr] 
Nov 16 19:18:42.222 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.222 INFO [stderr]     --> src/main.rs:1800:25
Nov 16 19:18:42.222 INFO [stderr]      |
Nov 16 19:18:42.223 INFO [stderr] 1800 |                     let mut row_expr = self.get_row_expression(&obj).unwrap();
Nov 16 19:18:42.223 INFO [stderr]      |                         ----^^^^^^^^
Nov 16 19:18:42.223 INFO [stderr]      |                         |
Nov 16 19:18:42.224 INFO [stderr]      |                         help: remove this `mut`
Nov 16 19:18:42.224 INFO [stderr] 
Nov 16 19:18:42.224 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.225 INFO [stderr]     --> src/main.rs:1816:25
Nov 16 19:18:42.225 INFO [stderr]      |
Nov 16 19:18:42.225 INFO [stderr] 1816 |                     let mut some_val = constraint_expr.mref.borrow().clone().constant.clone();
Nov 16 19:18:42.226 INFO [stderr]      |                         ----^^^^^^^^
Nov 16 19:18:42.226 INFO [stderr]      |                         |
Nov 16 19:18:42.226 INFO [stderr]      |                         help: remove this `mut`
Nov 16 19:18:42.227 INFO [stderr] 
Nov 16 19:18:42.243 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.243 INFO [stderr]     --> src/main.rs:2038:17
Nov 16 19:18:42.244 INFO [stderr]      |
Nov 16 19:18:42.244 INFO [stderr] 2038 |             let mut len = self.infeasible_rows.borrow().len();
Nov 16 19:18:42.244 INFO [stderr]      |                 ----^^^
Nov 16 19:18:42.245 INFO [stderr]      |                 |
Nov 16 19:18:42.245 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:42.245 INFO [stderr] 
Nov 16 19:18:42.246 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:42.246 INFO [stderr]     --> src/main.rs:2184:14
Nov 16 19:18:42.246 INFO [stderr]      |
Nov 16 19:18:42.247 INFO [stderr] 2184 |             let mut m = self.columns.borrow().clone();
Nov 16 19:18:42.247 INFO [stderr]      |                 ----^
Nov 16 19:18:42.247 INFO [stderr]      |                 |
Nov 16 19:18:42.248 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:42.248 INFO [stderr] 
Nov 16 19:18:42.275 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.275 INFO [stderr]     --> src/main.rs:1216:10
Nov 16 19:18:42.276 INFO [stderr]      |
Nov 16 19:18:42.276 INFO [stderr] 1216 |             self.add_constraint(&c);
Nov 16 19:18:42.277 INFO [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.277 INFO [stderr]      |
Nov 16 19:18:42.277 INFO [stderr]      = note: #[warn(unused_must_use)] on by default
Nov 16 19:18:42.277 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.278 INFO [stderr] 
Nov 16 19:18:42.278 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.278 INFO [stderr]     --> src/main.rs:1280:21
Nov 16 19:18:42.279 INFO [stderr]      |
Nov 16 19:18:42.279 INFO [stderr] 1280 |                     self.add_with_artificial(&expr);
Nov 16 19:18:42.279 INFO [stderr]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.280 INFO [stderr]      |
Nov 16 19:18:42.280 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.280 INFO [stderr] 
Nov 16 19:18:42.281 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.281 INFO [stderr]     --> src/main.rs:1307:17
Nov 16 19:18:42.281 INFO [stderr]      |
Nov 16 19:18:42.282 INFO [stderr] 1307 |                 self.optimise(&obj);
Nov 16 19:18:42.282 INFO [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.282 INFO [stderr]      |
Nov 16 19:18:42.283 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.283 INFO [stderr] 
Nov 16 19:18:42.283 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.284 INFO [stderr]     --> src/main.rs:1373:13
Nov 16 19:18:42.284 INFO [stderr]      |
Nov 16 19:18:42.284 INFO [stderr] 1373 |             self.optimise(&obj_var);
Nov 16 19:18:42.284 INFO [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.285 INFO [stderr]      |
Nov 16 19:18:42.285 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.286 INFO [stderr] 
Nov 16 19:18:42.286 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.286 INFO [stderr]     --> src/main.rs:1401:29
Nov 16 19:18:42.286 INFO [stderr]      |
Nov 16 19:18:42.287 INFO [stderr] 1401 |                             self.pivot(&entry_var, &slack_var);
Nov 16 19:18:42.287 INFO [stderr]      |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.287 INFO [stderr]      |
Nov 16 19:18:42.288 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.288 INFO [stderr] 
Nov 16 19:18:42.288 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.289 INFO [stderr]     --> src/main.rs:1514:25
Nov 16 19:18:42.289 INFO [stderr]      |
Nov 16 19:18:42.289 INFO [stderr] 1514 |                         self.pivot(&marker, &exit_var.unwrap());
Nov 16 19:18:42.290 INFO [stderr]      |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.290 INFO [stderr]      |
Nov 16 19:18:42.290 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.291 INFO [stderr] 
Nov 16 19:18:42.291 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.291 INFO [stderr]     --> src/main.rs:1574:17
Nov 16 19:18:42.291 INFO [stderr]      |
Nov 16 19:18:42.292 INFO [stderr] 1574 |                 self.optimise(&obj);
Nov 16 19:18:42.292 INFO [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.292 INFO [stderr]      |
Nov 16 19:18:42.293 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.293 INFO [stderr] 
Nov 16 19:18:42.293 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.294 INFO [stderr]     --> src/main.rs:1691:13
Nov 16 19:18:42.294 INFO [stderr]      |
Nov 16 19:18:42.294 INFO [stderr] 1691 |             self.remove_constraint(constraint);
Nov 16 19:18:42.294 INFO [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.295 INFO [stderr]      |
Nov 16 19:18:42.295 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.295 INFO [stderr] 
Nov 16 19:18:42.296 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.296 INFO [stderr]     --> src/main.rs:1702:17
Nov 16 19:18:42.296 INFO [stderr]      |
Nov 16 19:18:42.297 INFO [stderr] 1702 |                 self.add_edit_var(var, Strength::REQUIRED);
Nov 16 19:18:42.297 INFO [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.297 INFO [stderr]      |
Nov 16 19:18:42.298 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.298 INFO [stderr] 
Nov 16 19:18:42.298 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.299 INFO [stderr]     --> src/main.rs:1703:17
Nov 16 19:18:42.299 INFO [stderr]      |
Nov 16 19:18:42.299 INFO [stderr] 1703 |                 self.begin_edit();
Nov 16 19:18:42.300 INFO [stderr]      |                 ^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.300 INFO [stderr]      |
Nov 16 19:18:42.300 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.301 INFO [stderr] 
Nov 16 19:18:42.301 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.301 INFO [stderr]     --> src/main.rs:1706:25
Nov 16 19:18:42.302 INFO [stderr]      |
Nov 16 19:18:42.302 INFO [stderr] 1706 |                         self.end_edit();
Nov 16 19:18:42.302 INFO [stderr]      |                         ^^^^^^^^^^^^^^^^
Nov 16 19:18:42.303 INFO [stderr]      |
Nov 16 19:18:42.303 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.303 INFO [stderr] 
Nov 16 19:18:42.303 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.304 INFO [stderr]     --> src/main.rs:1854:13
Nov 16 19:18:42.304 INFO [stderr]      |
Nov 16 19:18:42.304 INFO [stderr] 1854 |             self.dual_optimise();
Nov 16 19:18:42.305 INFO [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.305 INFO [stderr]      |
Nov 16 19:18:42.305 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.306 INFO [stderr] 
Nov 16 19:18:42.306 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.306 INFO [stderr]     --> src/main.rs:2026:17
Nov 16 19:18:42.307 INFO [stderr]      |
Nov 16 19:18:42.307 INFO [stderr] 2026 |                 self.pivot(&entry_var.clone().unwrap(), &exit_var.clone().unwrap());
Nov 16 19:18:42.307 INFO [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.308 INFO [stderr]      |
Nov 16 19:18:42.308 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.308 INFO [stderr] 
Nov 16 19:18:42.309 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:42.309 INFO [stderr]     --> src/main.rs:2069:29
Nov 16 19:18:42.309 INFO [stderr]      |
Nov 16 19:18:42.309 INFO [stderr] 2069 |                             self.pivot(&entry_var.clone().unwrap(), &exit_var);
Nov 16 19:18:42.310 INFO [stderr]      |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:42.310 INFO [stderr]      |
Nov 16 19:18:42.310 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:42.311 INFO [stderr] 
Nov 16 19:18:42.597 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.13s
Nov 16 19:18:42.597 INFO [stderr] su: No module specific data is present
Nov 16 19:18:43.268 INFO running `"docker" "inspect" "145951d878b10929ca3931035018b10c3db4a6eda9bffa35f3dc0f5479e45d82"`
Nov 16 19:18:43.520 INFO running `"docker" "rm" "-f" "145951d878b10929ca3931035018b10c3db4a6eda9bffa35f3dc0f5479e45d82"`
Nov 16 19:18:43.918 INFO [stdout] 145951d878b10929ca3931035018b10c3db4a6eda9bffa35f3dc0f5479e45d82
Nov 16 19:18:43.925 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-4/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 16 19:18:44.423 INFO [stdout] 4893e0e8bda354a01bf01b493923d1e5071ae2015340440489d304885589c6e1
Nov 16 19:18:44.429 INFO running `"docker" "start" "-a" "4893e0e8bda354a01bf01b493923d1e5071ae2015340440489d304885589c6e1"`
Nov 16 19:18:45.415 INFO [stderr] usermod: no changes
Nov 16 19:18:45.457 INFO [stderr]    Compiling cassowaryr v0.1.0 (/source)
Nov 16 19:18:45.729 INFO [stderr] warning: unnecessary parentheses around `if` condition
Nov 16 19:18:45.729 INFO [stderr]     --> src/lib.rs:2055:36
Nov 16 19:18:45.729 INFO [stderr]      |
Nov 16 19:18:45.729 INFO [stderr] 2055 |                                 if (val > 0f64 && var.pivotable()) {
Nov 16 19:18:45.729 INFO [stderr]      |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Nov 16 19:18:45.729 INFO [stderr]      |
Nov 16 19:18:45.729 INFO [stderr]      = note: #[warn(unused_parens)] on by default
Nov 16 19:18:45.729 INFO [stderr] 
Nov 16 19:18:45.969 INFO [stderr] warning: value assigned to `prev_edit_constant` is never read
Nov 16 19:18:45.969 INFO [stderr]     --> src/main.rs:1830:7
Nov 16 19:18:45.969 INFO [stderr]      |
Nov 16 19:18:45.969 INFO [stderr] 1830 |                         prev_edit_constant =  some_val;
Nov 16 19:18:45.969 INFO [stderr]      |                         ^^^^^^^^^^^^^^^^^^
Nov 16 19:18:45.969 INFO [stderr]      |
Nov 16 19:18:45.969 INFO [stderr]      = note: #[warn(unused_assignments)] on by default
Nov 16 19:18:45.969 INFO [stderr] 
Nov 16 19:18:45.969 INFO [stderr] warning: value assigned to `r` is never read
Nov 16 19:18:45.969 INFO [stderr]     --> src/main.rs:1997:25
Nov 16 19:18:45.970 INFO [stderr]      |
Nov 16 19:18:45.970 INFO [stderr] 1997 |                 let mut r: f64 = 0f64;
Nov 16 19:18:45.970 INFO [stderr]      |                         ^
Nov 16 19:18:45.970 INFO [stderr] 
Nov 16 19:18:46.012 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.012 INFO [stderr]    --> src/main.rs:863:14
Nov 16 19:18:46.013 INFO [stderr]     |
Nov 16 19:18:46.013 INFO [stderr] 863 |             let mut expr = Rc::new(Expression::new_blank());
Nov 16 19:18:46.013 INFO [stderr]     |                 ----^^^^
Nov 16 19:18:46.013 INFO [stderr]     |                 |
Nov 16 19:18:46.014 INFO [stderr]     |                 help: remove this `mut`
Nov 16 19:18:46.014 INFO [stderr]     |
Nov 16 19:18:46.014 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 16 19:18:46.014 INFO [stderr] 
Nov 16 19:18:46.016 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.016 INFO [stderr]    --> src/main.rs:915:21
Nov 16 19:18:46.016 INFO [stderr]     |
Nov 16 19:18:46.017 INFO [stderr] 915 |                 let mut expr = Rc::new(Expression::new_single_variable(var_two));
Nov 16 19:18:46.017 INFO [stderr]     |                     ----^^^^
Nov 16 19:18:46.017 INFO [stderr]     |                     |
Nov 16 19:18:46.018 INFO [stderr]     |                     help: remove this `mut`
Nov 16 19:18:46.018 INFO [stderr] 
Nov 16 19:18:46.019 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.019 INFO [stderr]    --> src/main.rs:937:17
Nov 16 19:18:46.019 INFO [stderr]     |
Nov 16 19:18:46.020 INFO [stderr] 937 |             let mut cexpr: Rc<Expression> = expr.clone();
Nov 16 19:18:46.020 INFO [stderr]     |                 ----^^^^^
Nov 16 19:18:46.020 INFO [stderr]     |                 |
Nov 16 19:18:46.021 INFO [stderr]     |                 help: remove this `mut`
Nov 16 19:18:46.021 INFO [stderr] 
Nov 16 19:18:46.022 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.023 INFO [stderr]    --> src/main.rs:966:17
Nov 16 19:18:46.024 INFO [stderr]     |
Nov 16 19:18:46.024 INFO [stderr] 966 |             let mut expr = expr_two.clone();
Nov 16 19:18:46.024 INFO [stderr]     |                 ----^^^^
Nov 16 19:18:46.024 INFO [stderr]     |                 |
Nov 16 19:18:46.024 INFO [stderr]     |                 help: remove this `mut`
Nov 16 19:18:46.024 INFO [stderr] 
Nov 16 19:18:46.029 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.029 INFO [stderr]     --> src/main.rs:1146:17
Nov 16 19:18:46.029 INFO [stderr]      |
Nov 16 19:18:46.029 INFO [stderr] 1146 |             let mut expr = Rc::new(Expression::new_blank());
Nov 16 19:18:46.029 INFO [stderr]      |                 ----^^^^
Nov 16 19:18:46.029 INFO [stderr]      |                 |
Nov 16 19:18:46.029 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:46.029 INFO [stderr] 
Nov 16 19:18:46.045 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.045 INFO [stderr]     --> src/main.rs:1268:17
Nov 16 19:18:46.045 INFO [stderr]      |
Nov 16 19:18:46.045 INFO [stderr] 1268 |             let mut prev_edit_constant = 0f64;
Nov 16 19:18:46.045 INFO [stderr]      |                 ----^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.045 INFO [stderr]      |                 |
Nov 16 19:18:46.045 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:46.045 INFO [stderr] 
Nov 16 19:18:46.045 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.045 INFO [stderr]     --> src/main.rs:1270:17
Nov 16 19:18:46.045 INFO [stderr]      |
Nov 16 19:18:46.045 INFO [stderr] 1270 |             let mut expr = self.new_expression(constraint,
Nov 16 19:18:46.045 INFO [stderr]      |                 ----^^^^
Nov 16 19:18:46.045 INFO [stderr]      |                 |
Nov 16 19:18:46.045 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:46.045 INFO [stderr] 
Nov 16 19:18:46.055 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.055 INFO [stderr]     --> src/main.rs:1389:22
Nov 16 19:18:46.055 INFO [stderr]      |
Nov 16 19:18:46.055 INFO [stderr] 1389 |                 Some(mut expr) => {
Nov 16 19:18:46.055 INFO [stderr]      |                      ----^^^^
Nov 16 19:18:46.055 INFO [stderr]      |                      |
Nov 16 19:18:46.055 INFO [stderr]      |                      help: remove this `mut`
Nov 16 19:18:46.055 INFO [stderr] 
Nov 16 19:18:46.077 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.077 INFO [stderr]     --> src/main.rs:1429:17
Nov 16 19:18:46.077 INFO [stderr]      |
Nov 16 19:18:46.077 INFO [stderr] 1429 |             let mut obj_row: Rc<Expression> = self.get_row_expression(&obj).unwrap();
Nov 16 19:18:46.077 INFO [stderr]      |                 ----^^^^^^^
Nov 16 19:18:46.077 INFO [stderr]      |                 |
Nov 16 19:18:46.078 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:46.078 INFO [stderr] 
Nov 16 19:18:46.078 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.078 INFO [stderr]     --> src/main.rs:1432:17
Nov 16 19:18:46.078 INFO [stderr]      |
Nov 16 19:18:46.078 INFO [stderr] 1432 |             let mut error_option = self.error_vars.borrow_mut().get(constraint).map(|x| x.clone());
Nov 16 19:18:46.078 INFO [stderr]      |                 ----^^^^^^^^^^^^
Nov 16 19:18:46.078 INFO [stderr]      |                 |
Nov 16 19:18:46.078 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:46.078 INFO [stderr] 
Nov 16 19:18:46.090 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.090 INFO [stderr]     --> src/main.rs:1760:25
Nov 16 19:18:46.090 INFO [stderr]      |
Nov 16 19:18:46.090 INFO [stderr] 1760 |                     let mut row_expr = self.get_row_expression(&obj).unwrap();
Nov 16 19:18:46.090 INFO [stderr]      |                         ----^^^^^^^^
Nov 16 19:18:46.090 INFO [stderr]      |                         |
Nov 16 19:18:46.090 INFO [stderr]      |                         help: remove this `mut`
Nov 16 19:18:46.090 INFO [stderr] 
Nov 16 19:18:46.090 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.090 INFO [stderr]     --> src/main.rs:1800:25
Nov 16 19:18:46.090 INFO [stderr]      |
Nov 16 19:18:46.090 INFO [stderr] 1800 |                     let mut row_expr = self.get_row_expression(&obj).unwrap();
Nov 16 19:18:46.090 INFO [stderr]      |                         ----^^^^^^^^
Nov 16 19:18:46.090 INFO [stderr]      |                         |
Nov 16 19:18:46.090 INFO [stderr]      |                         help: remove this `mut`
Nov 16 19:18:46.091 INFO [stderr] 
Nov 16 19:18:46.091 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.091 INFO [stderr]     --> src/main.rs:1816:25
Nov 16 19:18:46.091 INFO [stderr]      |
Nov 16 19:18:46.091 INFO [stderr] 1816 |                     let mut some_val = constraint_expr.mref.borrow().clone().constant.clone();
Nov 16 19:18:46.091 INFO [stderr]      |                         ----^^^^^^^^
Nov 16 19:18:46.091 INFO [stderr]      |                         |
Nov 16 19:18:46.091 INFO [stderr]      |                         help: remove this `mut`
Nov 16 19:18:46.091 INFO [stderr] 
Nov 16 19:18:46.115 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.115 INFO [stderr]     --> src/main.rs:2038:17
Nov 16 19:18:46.115 INFO [stderr]      |
Nov 16 19:18:46.115 INFO [stderr] 2038 |             let mut len = self.infeasible_rows.borrow().len();
Nov 16 19:18:46.115 INFO [stderr]      |                 ----^^^
Nov 16 19:18:46.115 INFO [stderr]      |                 |
Nov 16 19:18:46.115 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:46.115 INFO [stderr] 
Nov 16 19:18:46.123 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.123 INFO [stderr]     --> src/main.rs:2184:14
Nov 16 19:18:46.123 INFO [stderr]      |
Nov 16 19:18:46.123 INFO [stderr] 2184 |             let mut m = self.columns.borrow().clone();
Nov 16 19:18:46.123 INFO [stderr]      |                 ----^
Nov 16 19:18:46.123 INFO [stderr]      |                 |
Nov 16 19:18:46.123 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:46.123 INFO [stderr] 
Nov 16 19:18:46.140 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.140 INFO [stderr]     --> src/main.rs:2406:17
Nov 16 19:18:46.140 INFO [stderr]      |
Nov 16 19:18:46.140 INFO [stderr] 2406 |             let mut x: Rc<Variable> = Rc::new(Variable::new(String::from("var1"),
Nov 16 19:18:46.140 INFO [stderr]      |                 ----^
Nov 16 19:18:46.140 INFO [stderr]      |                 |
Nov 16 19:18:46.140 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:46.140 INFO [stderr] 
Nov 16 19:18:46.140 INFO [stderr] warning: variable does not need to be mutable
Nov 16 19:18:46.140 INFO [stderr]     --> src/main.rs:2410:17
Nov 16 19:18:46.140 INFO [stderr]      |
Nov 16 19:18:46.140 INFO [stderr] 2410 |             let mut y: Rc<Variable> = Rc::new(Variable::new(String::from("var2"),
Nov 16 19:18:46.140 INFO [stderr]      |                 ----^
Nov 16 19:18:46.140 INFO [stderr]      |                 |
Nov 16 19:18:46.140 INFO [stderr]      |                 help: remove this `mut`
Nov 16 19:18:46.140 INFO [stderr] 
Nov 16 19:18:46.140 INFO [stderr] warning: value assigned to `prev_edit_constant` is never read
Nov 16 19:18:46.140 INFO [stderr]     --> src/lib.rs:1838:25
Nov 16 19:18:46.141 INFO [stderr]      |
Nov 16 19:18:46.141 INFO [stderr] 1838 |                         prev_edit_constant =  some_val;
Nov 16 19:18:46.141 INFO [stderr]      |                         ^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.141 INFO [stderr]      |
Nov 16 19:18:46.141 INFO [stderr]      = note: #[warn(unused_assignments)] on by default
Nov 16 19:18:46.141 INFO [stderr] 
Nov 16 19:18:46.141 INFO [stderr] warning: value assigned to `r` is never read
Nov 16 19:18:46.141 INFO [stderr]     --> src/lib.rs:2006:25
Nov 16 19:18:46.141 INFO [stderr]      |
Nov 16 19:18:46.141 INFO [stderr] 2006 |                 let mut r: f64 = 0f64;
Nov 16 19:18:46.141 INFO [stderr]      |                         ^
Nov 16 19:18:46.141 INFO [stderr] 
Nov 16 19:18:46.151 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.151 INFO [stderr]     --> src/main.rs:1216:10
Nov 16 19:18:46.151 INFO [stderr]      |
Nov 16 19:18:46.151 INFO [stderr] 1216 |             self.add_constraint(&c);
Nov 16 19:18:46.151 INFO [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.154 INFO [stderr]      |
Nov 16 19:18:46.154 INFO [stderr]      = note: #[warn(unused_must_use)] on by default
Nov 16 19:18:46.154 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.154 INFO [stderr] 
Nov 16 19:18:46.154 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.154 INFO [stderr]     --> src/main.rs:1280:21
Nov 16 19:18:46.154 INFO [stderr]      |
Nov 16 19:18:46.154 INFO [stderr] 1280 |                     self.add_with_artificial(&expr);
Nov 16 19:18:46.154 INFO [stderr]      |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.154 INFO [stderr]      |
Nov 16 19:18:46.154 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.154 INFO [stderr] 
Nov 16 19:18:46.154 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.154 INFO [stderr]     --> src/main.rs:1307:17
Nov 16 19:18:46.154 INFO [stderr]      |
Nov 16 19:18:46.154 INFO [stderr] 1307 |                 self.optimise(&obj);
Nov 16 19:18:46.154 INFO [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.154 INFO [stderr]      |
Nov 16 19:18:46.154 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.154 INFO [stderr] 
Nov 16 19:18:46.154 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.154 INFO [stderr]     --> src/main.rs:1373:13
Nov 16 19:18:46.154 INFO [stderr]      |
Nov 16 19:18:46.154 INFO [stderr] 1373 |             self.optimise(&obj_var);
Nov 16 19:18:46.154 INFO [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.154 INFO [stderr]      |
Nov 16 19:18:46.154 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.154 INFO [stderr] 
Nov 16 19:18:46.154 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.154 INFO [stderr]     --> src/main.rs:1401:29
Nov 16 19:18:46.154 INFO [stderr]      |
Nov 16 19:18:46.154 INFO [stderr] 1401 |                             self.pivot(&entry_var, &slack_var);
Nov 16 19:18:46.154 INFO [stderr]      |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.154 INFO [stderr]      |
Nov 16 19:18:46.154 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.154 INFO [stderr] 
Nov 16 19:18:46.154 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.154 INFO [stderr]     --> src/main.rs:1514:25
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr] 1514 |                         self.pivot(&marker, &exit_var.unwrap());
Nov 16 19:18:46.155 INFO [stderr]      |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.155 INFO [stderr] 
Nov 16 19:18:46.155 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.155 INFO [stderr]     --> src/main.rs:1574:17
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr] 1574 |                 self.optimise(&obj);
Nov 16 19:18:46.155 INFO [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.155 INFO [stderr] 
Nov 16 19:18:46.155 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.155 INFO [stderr]     --> src/main.rs:1691:13
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr] 1691 |             self.remove_constraint(constraint);
Nov 16 19:18:46.155 INFO [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.155 INFO [stderr] 
Nov 16 19:18:46.155 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.155 INFO [stderr]     --> src/main.rs:1702:17
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr] 1702 |                 self.add_edit_var(var, Strength::REQUIRED);
Nov 16 19:18:46.155 INFO [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.155 INFO [stderr] 
Nov 16 19:18:46.155 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.155 INFO [stderr]     --> src/main.rs:1703:17
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr] 1703 |                 self.begin_edit();
Nov 16 19:18:46.155 INFO [stderr]      |                 ^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.155 INFO [stderr] 
Nov 16 19:18:46.155 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.155 INFO [stderr]     --> src/main.rs:1706:25
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr] 1706 |                         self.end_edit();
Nov 16 19:18:46.155 INFO [stderr]      |                         ^^^^^^^^^^^^^^^^
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.155 INFO [stderr] 
Nov 16 19:18:46.155 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.155 INFO [stderr]     --> src/main.rs:1854:13
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr] 1854 |             self.dual_optimise();
Nov 16 19:18:46.155 INFO [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.155 INFO [stderr] 
Nov 16 19:18:46.155 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.155 INFO [stderr]     --> src/main.rs:2026:17
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.155 INFO [stderr] 2026 |                 self.pivot(&entry_var.clone().unwrap(), &exit_var.clone().unwrap());
Nov 16 19:18:46.155 INFO [stderr]      |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.155 INFO [stderr]      |
Nov 16 19:18:46.159 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.159 INFO [stderr] 
Nov 16 19:18:46.159 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.159 INFO [stderr]     --> src/main.rs:2069:29
Nov 16 19:18:46.159 INFO [stderr]      |
Nov 16 19:18:46.159 INFO [stderr] 2069 |                             self.pivot(&entry_var.clone().unwrap(), &exit_var);
Nov 16 19:18:46.159 INFO [stderr]      |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.159 INFO [stderr]      |
Nov 16 19:18:46.159 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.159 INFO [stderr] 
Nov 16 19:18:46.167 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 19:18:46.167 INFO [stderr]     --> src/main.rs:2424:13
Nov 16 19:18:46.167 INFO [stderr]      |
Nov 16 19:18:46.167 INFO [stderr] 2424 |             s.add_constraint(&c);
Nov 16 19:18:46.167 INFO [stderr]      |             ^^^^^^^^^^^^^^^^^^^^^
Nov 16 19:18:46.167 INFO [stderr]      |
Nov 16 19:18:46.167 INFO [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 19:18:46.167 INFO [stderr] 
Nov 16 19:18:49.860 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.41s
Nov 16 19:18:49.863 INFO [stderr] su: No module specific data is present
Nov 16 19:18:50.176 INFO running `"docker" "inspect" "4893e0e8bda354a01bf01b493923d1e5071ae2015340440489d304885589c6e1"`
Nov 16 19:18:50.234 INFO running `"docker" "rm" "-f" "4893e0e8bda354a01bf01b493923d1e5071ae2015340440489d304885589c6e1"`
Nov 16 19:18:50.330 INFO [stdout] 4893e0e8bda354a01bf01b493923d1e5071ae2015340440489d304885589c6e1
Nov 16 19:18:50.337 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-4/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +2e026d6e5d7621634147ad4c8074f1d964dbb1be-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 16 19:18:50.501 INFO [stdout] 1f6fc4e7016831a9fa0f65c8f8e0349796c9774a2a578bb4337c8b0e5e83c0f5
Nov 16 19:18:50.503 INFO running `"docker" "start" "-a" "1f6fc4e7016831a9fa0f65c8f8e0349796c9774a2a578bb4337c8b0e5e83c0f5"`
Nov 16 19:18:50.965 INFO [stderr] usermod: no changes
Nov 16 19:18:51.036 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
Nov 16 19:18:51.043 INFO [stderr]      Running /target/debug/deps/cassowaryr-d90e7b43c48bb762
Nov 16 19:18:51.053 INFO [stdout] 
Nov 16 19:18:51.053 INFO [stdout] running 4 tests
Nov 16 19:18:51.059 INFO [stdout] test cass_tests::t2 ... ok
Nov 16 19:18:51.061 INFO [stdout] test cass_tests::t3 ... ok
Nov 16 19:18:51.061 INFO [stdout] test cass_tests::t1 ... ok
Nov 16 19:18:51.062 INFO [stdout] test cass_tests::t4 ... ok
Nov 16 19:18:51.062 INFO [stdout] 
Nov 16 19:18:51.062 INFO [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 19:18:51.062 INFO [stdout] 
Nov 16 19:18:51.063 INFO [stderr]      Running /target/debug/deps/cassowaryr-2537c7f1cfe0754d
Nov 16 19:18:51.064 INFO [stdout] 
Nov 16 19:18:51.065 INFO [stdout] running 1 test
Nov 16 19:18:51.065 INFO [stdout] test cass_tests::t1 ... ok
Nov 16 19:18:51.065 INFO [stderr]    Doc-tests cassowaryr
Nov 16 19:18:51.065 INFO [stdout] 
Nov 16 19:18:51.065 INFO [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 19:18:51.065 INFO [stdout] 
Nov 16 19:18:51.412 INFO [stdout] 
Nov 16 19:18:51.412 INFO [stdout] running 0 tests
Nov 16 19:18:51.412 INFO [stdout] 
Nov 16 19:18:51.412 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 19:18:51.412 INFO [stdout] 
Nov 16 19:18:51.419 INFO [stderr] su: No module specific data is present
Nov 16 19:18:51.840 INFO running `"docker" "inspect" "1f6fc4e7016831a9fa0f65c8f8e0349796c9774a2a578bb4337c8b0e5e83c0f5"`
Nov 16 19:18:52.149 INFO running `"docker" "rm" "-f" "1f6fc4e7016831a9fa0f65c8f8e0349796c9774a2a578bb4337c8b0e5e83c0f5"`
Nov 16 19:18:52.415 INFO [stdout] 1f6fc4e7016831a9fa0f65c8f8e0349796c9774a2a578bb4337c8b0e5e83c0f5