[INFO] fetching crate classical_solver 0.1.0...
[INFO] checking classical_solver-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate classical_solver 0.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate classical_solver 0.1.0
[INFO] finished tweaking crates.io crate classical_solver 0.1.0
[INFO] tweaked toml for crates.io crate classical_solver 0.1.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate classical_solver 0.1.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 18 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 556acc1c57a34673630c6da0fe9f6fc347cba9ec3d0cc1eaf6b06d038203b4c2
[INFO] running `Command { std: "docker" "start" "-a" "556acc1c57a34673630c6da0fe9f6fc347cba9ec3d0cc1eaf6b06d038203b4c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "556acc1c57a34673630c6da0fe9f6fc347cba9ec3d0cc1eaf6b06d038203b4c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "556acc1c57a34673630c6da0fe9f6fc347cba9ec3d0cc1eaf6b06d038203b4c2", kill_on_drop: false }`
[INFO] [stdout] 556acc1c57a34673630c6da0fe9f6fc347cba9ec3d0cc1eaf6b06d038203b4c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 439f24ada6c53f2ffdd0c99d92e8fbd3a5651f5e823ba2c6275dc5dcd5996c85
[INFO] running `Command { std: "docker" "start" "-a" "439f24ada6c53f2ffdd0c99d92e8fbd3a5651f5e823ba2c6275dc5dcd5996c85", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling syn v2.0.110
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]     Checking annealers v0.1.0
[INFO] [stderr]     Checking classical_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<SimulatedAnnealer<'_, P, <<P as SingleModelView>::Node as SingleNode>::RealType>, NoneError>
[INFO] [stdout]   --> src/sa.rs:43:80
[INFO] [stdout]    |
[INFO] [stdout] 43 |       fn generate(&self, model: &'a P) -> Result<Self::SolverType, Self::ErrorType> {
[INFO] [stdout]    |  ___________________________________________________________________________________^
[INFO] [stdout] 44 | |         // TODO: prevent copying model
[INFO] [stdout] 45 | |         let schedule = crate::beta::generate_schedule(&self.beta, model);
[INFO] [stdout] 46 | |         Ok(SimulatedAnnealer {
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |         })
[INFO] [stdout] 52 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<SimulatedAnnealer<'_, P, <<P as SingleModelView>::Node as SingleNode>::RealType>, NoneError>
[INFO] [stdout]   --> src/sa.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 46 | /         Ok(SimulatedAnnealer {
[INFO] [stdout] 47 | |             sweeps_per_round: self.sweeps_per_round,
[INFO] [stdout] 48 | |             beta_schedule: schedule,
[INFO] [stdout] 49 | |             model: model,
[INFO] [stdout] 50 | |             _phantom: PhantomData,
[INFO] [stdout] 51 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<SingleSolution<annealers::node::Binary<R>>>, NoneError>
[INFO] [stdout]   --> src/sa.rs:77:55
[INFO] [stdout]    |
[INFO] [stdout] 77 |       ) -> Result<Vec<SingleSolution<P::Node>>, NoneError> {
[INFO] [stdout]    |  __________________________________________________________^
[INFO] [stdout] 78 | |         let mut state = BinaryRepr::new_random(self.model.size(), r);
[INFO] [stdout] 79 | |         // let mut state = BinaryRepr::from_vec(&vec![true, false, true]);
[INFO] [stdout] 80 | |         simulated_annealing(
[INFO] [stdout] ...  |
[INFO] [stdout] 87 | |         Ok(vec![SingleSolution::from_state(state)])
[INFO] [stdout] 88 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<SingleSolution<annealers::node::Binary<R>>>, NoneError>
[INFO] [stdout]   --> src/sa.rs:87:3
[INFO] [stdout]    |
[INFO] [stdout] 87 |         Ok(vec![SingleSolution::from_state(state)])
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `classical_solver` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<SimulatedAnnealer<'_, P, <<P as SingleModelView>::Node as SingleNode>::RealType>, NoneError>
[INFO] [stdout]   --> src/sa.rs:43:80
[INFO] [stdout]    |
[INFO] [stdout] 43 |       fn generate(&self, model: &'a P) -> Result<Self::SolverType, Self::ErrorType> {
[INFO] [stdout]    |  ___________________________________________________________________________________^
[INFO] [stdout] 44 | |         // TODO: prevent copying model
[INFO] [stdout] 45 | |         let schedule = crate::beta::generate_schedule(&self.beta, model);
[INFO] [stdout] 46 | |         Ok(SimulatedAnnealer {
[INFO] [stdout] ...  |
[INFO] [stdout] 51 | |         })
[INFO] [stdout] 52 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<SimulatedAnnealer<'_, P, <<P as SingleModelView>::Node as SingleNode>::RealType>, NoneError>
[INFO] [stdout]   --> src/sa.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 46 | /         Ok(SimulatedAnnealer {
[INFO] [stdout] 47 | |             sweeps_per_round: self.sweeps_per_round,
[INFO] [stdout] 48 | |             beta_schedule: schedule,
[INFO] [stdout] 49 | |             model: model,
[INFO] [stdout] 50 | |             _phantom: PhantomData,
[INFO] [stdout] 51 | |         })
[INFO] [stdout]    | |__________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<SingleSolution<annealers::node::Binary<R>>>, NoneError>
[INFO] [stdout]   --> src/sa.rs:77:55
[INFO] [stdout]    |
[INFO] [stdout] 77 |       ) -> Result<Vec<SingleSolution<P::Node>>, NoneError> {
[INFO] [stdout]    |  __________________________________________________________^
[INFO] [stdout] 78 | |         let mut state = BinaryRepr::new_random(self.model.size(), r);
[INFO] [stdout] 79 | |         // let mut state = BinaryRepr::from_vec(&vec![true, false, true]);
[INFO] [stdout] 80 | |         simulated_annealing(
[INFO] [stdout] ...  |
[INFO] [stdout] 87 | |         Ok(vec![SingleSolution::from_state(state)])
[INFO] [stdout] 88 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<SingleSolution<annealers::node::Binary<R>>>, NoneError>
[INFO] [stdout]   --> src/sa.rs:87:3
[INFO] [stdout]    |
[INFO] [stdout] 87 |         Ok(vec![SingleSolution::from_state(state)])
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `classical_solver` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "439f24ada6c53f2ffdd0c99d92e8fbd3a5651f5e823ba2c6275dc5dcd5996c85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "439f24ada6c53f2ffdd0c99d92e8fbd3a5651f5e823ba2c6275dc5dcd5996c85", kill_on_drop: false }`
[INFO] [stdout] 439f24ada6c53f2ffdd0c99d92e8fbd3a5651f5e823ba2c6275dc5dcd5996c85