[INFO] fetching crate twine-core 0.3.0...
[INFO] checking twine-core-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate twine-core 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate twine-core 0.3.0
[INFO] finished tweaking crates.io crate twine-core 0.3.0
[INFO] tweaked toml for crates.io crate twine-core 0.3.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate twine-core 0.3.0 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] crate crates.io crate twine-core 0.3.0 already has a lockfile, it will not be regenerated
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2a8d41c0a34076fb59bc8bae08528c535c6cd2a5f560ebc0eda1a0b9e5450835
[INFO] running `Command { std: "docker" "start" "-a" "2a8d41c0a34076fb59bc8bae08528c535c6cd2a5f560ebc0eda1a0b9e5450835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a8d41c0a34076fb59bc8bae08528c535c6cd2a5f560ebc0eda1a0b9e5450835", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a8d41c0a34076fb59bc8bae08528c535c6cd2a5f560ebc0eda1a0b9e5450835", kill_on_drop: false }`
[INFO] [stdout] 2a8d41c0a34076fb59bc8bae08528c535c6cd2a5f560ebc0eda1a0b9e5450835
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f143e0ad48623f24835bb1ddda0eed04055f8fdcbec02bdf247aa8190d5ccd74
[INFO] running `Command { std: "docker" "start" "-a" "f143e0ad48623f24835bb1ddda0eed04055f8fdcbec02bdf247aa8190d5ccd74", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking hashbrown v0.15.4
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]     Checking fixedbitset v0.5.7
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking uom v0.37.0
[INFO] [stderr]     Checking indexmap v2.10.0
[INFO] [stderr]     Checking petgraph v0.7.1
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]     Checking twine-core v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<simulation::tests::Output, Infallible>
[INFO] [stdout]    --> src/simulation.rs:370:81
[INFO] [stdout]     |
[INFO] [stdout] 370 |           fn call(&self, input: Self::Input) -> Result<Self::Output, Self::Error> {
[INFO] [stdout]     |  _________________________________________________________________________________^
[INFO] [stdout] 371 | |             let Input {
[INFO] [stdout] 372 | |                 position, velocity, ..
[INFO] [stdout] 373 | |             } = input;
[INFO] [stdout] ...   |
[INFO] [stdout] 377 | |             Ok(Output { acceleration })
[INFO] [stdout] 378 | |         }
[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<simulation::tests::Output, Infallible>
[INFO] [stdout]    --> src/simulation.rs:377:13
[INFO] [stdout]     |
[INFO] [stdout] 377 |             Ok(Output { acceleration })
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Input, Infallible>
[INFO] [stdout]    --> src/simulation.rs:397:45
[INFO] [stdout]     |
[INFO] [stdout] 397 |           ) -> Result<Input, Self::StepError> {
[INFO] [stdout]     |  _____________________________________________^
[INFO] [stdout] 398 | |             let seconds = dt.as_secs_f64();
[INFO] [stdout] 399 | |             let time_in_minutes = state.input.time_in_minutes + seconds / 60.0;
[INFO] [stdout] ...   |
[INFO] [stdout] 408 | |             })
[INFO] [stdout] 409 | |         }
[INFO] [stdout]     | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Input, Infallible>
[INFO] [stdout]    --> src/simulation.rs:404:13
[INFO] [stdout]     |
[INFO] [stdout] 404 | /             Ok(Input {
[INFO] [stdout] 405 | |                 time_in_minutes,
[INFO] [stdout] 406 | |                 position,
[INFO] [stdout] 407 | |                 velocity,
[INFO] [stdout] 408 | |             })
[INFO] [stdout]     | |______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Vec<simulation::State<Spring>>, Infallible>
[INFO] [stdout]    --> src/simulation.rs:430:22
[INFO] [stdout]     |
[INFO] [stdout] 430 |         let states = sim.step_many(initial, steps, dt).unwrap();
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<simulation::State<Spring>, Infallible>
[INFO] [stdout]    --> src/simulation.rs:495:35
[INFO] [stdout]     |
[INFO] [stdout] 495 |             .find_map(|res| match res {
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `twine-core` (lib test) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "f143e0ad48623f24835bb1ddda0eed04055f8fdcbec02bdf247aa8190d5ccd74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f143e0ad48623f24835bb1ddda0eed04055f8fdcbec02bdf247aa8190d5ccd74", kill_on_drop: false }`
[INFO] [stdout] f143e0ad48623f24835bb1ddda0eed04055f8fdcbec02bdf247aa8190d5ccd74