[INFO] fetching crate optim 0.2.0...
[INFO] testing optim-0.2.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate optim 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate optim 0.2.0
[INFO] finished tweaking crates.io crate optim 0.2.0
[INFO] tweaked toml for crates.io crate optim 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate optim 0.2.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate optim 0.2.0 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" "+beta-2025-10-28" "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" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b639aaa05997a2b56469b57c91b4c697780b315fb6b1b9d7cf9a1124605b2a69
[INFO] running `Command { std: "docker" "start" "-a" "b639aaa05997a2b56469b57c91b4c697780b315fb6b1b9d7cf9a1124605b2a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b639aaa05997a2b56469b57c91b4c697780b315fb6b1b9d7cf9a1124605b2a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b639aaa05997a2b56469b57c91b4c697780b315fb6b1b9d7cf9a1124605b2a69", kill_on_drop: false }`
[INFO] [stdout] b639aaa05997a2b56469b57c91b4c697780b315fb6b1b9d7cf9a1124605b2a69
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffcdf772f393d307888306851c595e49363cf014affd8374fe5e13d571f65981
[INFO] running `Command { std: "docker" "start" "-a" "ffcdf772f393d307888306851c595e49363cf014affd8374fe5e13d571f65981", kill_on_drop: false }`
[INFO] [stderr]    Compiling optim v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `constraint`
[INFO] [stdout]   --> src/lib.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn add_constraint(&mut self, constraint: Constraint) {}
[INFO] [stdout]    |                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variable`
[INFO] [stdout]   --> src/lib.rs:25:30
[INFO] [stdout]    |
[INFO] [stdout] 25 |   pub fn maximise(&mut self, variable: Variable) {}
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variable`
[INFO] [stdout]   --> src/lib.rs:26:30
[INFO] [stdout]    |
[INFO] [stdout] 26 |   pub fn minimise(&mut self, variable: Variable) {}
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `constraints` is never read
[INFO] [stdout]  --> src/lib.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Model {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 4 |   variables: HashMap<String, Option<f64>>,
[INFO] [stdout] 5 |   constraints: Vec<Constraint>,
[INFO] [stdout]   |   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "ffcdf772f393d307888306851c595e49363cf014affd8374fe5e13d571f65981", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffcdf772f393d307888306851c595e49363cf014affd8374fe5e13d571f65981", kill_on_drop: false }`
[INFO] [stdout] ffcdf772f393d307888306851c595e49363cf014affd8374fe5e13d571f65981
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10560af150c3e5d8192d387781384a1ab24c2eda757a9899ef1aabfcb5fcce20
[INFO] running `Command { std: "docker" "start" "-a" "10560af150c3e5d8192d387781384a1ab24c2eda757a9899ef1aabfcb5fcce20", kill_on_drop: false }`
[INFO] [stderr]    Compiling optim v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `constraint`
[INFO] [stdout]   --> src/lib.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn add_constraint(&mut self, constraint: Constraint) {}
[INFO] [stdout]    |                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variable`
[INFO] [stdout]   --> src/lib.rs:25:30
[INFO] [stdout]    |
[INFO] [stdout] 25 |   pub fn maximise(&mut self, variable: Variable) {}
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variable`
[INFO] [stdout]   --> src/lib.rs:26:30
[INFO] [stdout]    |
[INFO] [stdout] 26 |   pub fn minimise(&mut self, variable: Variable) {}
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `constraints` is never read
[INFO] [stdout]  --> src/lib.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Model {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 4 |   variables: HashMap<String, Option<f64>>,
[INFO] [stdout] 5 |   constraints: Vec<Constraint>,
[INFO] [stdout]   |   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `constraint`
[INFO] [stdout]   --> src/lib.rs:24:36
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn add_constraint(&mut self, constraint: Constraint) {}
[INFO] [stdout]    |                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variable`
[INFO] [stdout]   --> src/lib.rs:25:30
[INFO] [stdout]    |
[INFO] [stdout] 25 |   pub fn maximise(&mut self, variable: Variable) {}
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variable`
[INFO] [stdout]   --> src/lib.rs:26:30
[INFO] [stdout]    |
[INFO] [stdout] 26 |   pub fn minimise(&mut self, variable: Variable) {}
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `constraints` is never read
[INFO] [stdout]  --> src/lib.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Model {
[INFO] [stdout]   |            ----- field in this struct
[INFO] [stdout] 4 |   variables: HashMap<String, Option<f64>>,
[INFO] [stdout] 5 |   constraints: Vec<Constraint>,
[INFO] [stdout]   |   ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "10560af150c3e5d8192d387781384a1ab24c2eda757a9899ef1aabfcb5fcce20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10560af150c3e5d8192d387781384a1ab24c2eda757a9899ef1aabfcb5fcce20", kill_on_drop: false }`
[INFO] [stdout] 10560af150c3e5d8192d387781384a1ab24c2eda757a9899ef1aabfcb5fcce20
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dd3560f8997b4cbf209a3a67210160017703e8c103cbac837567cee55446274a
[INFO] running `Command { std: "docker" "start" "-a" "dd3560f8997b4cbf209a3a67210160017703e8c103cbac837567cee55446274a", kill_on_drop: false }`
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `constraint`
[INFO] [stderr]   --> src/lib.rs:24:36
[INFO] [stderr]    |
[INFO] [stderr] 24 |   pub fn add_constraint(&mut self, constraint: Constraint) {}
[INFO] [stderr]    |                                    ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_constraint`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `variable`
[INFO] [stderr]   --> src/lib.rs:25:30
[INFO] [stderr]    |
[INFO] [stderr] 25 |   pub fn maximise(&mut self, variable: Variable) {}
[INFO] [stderr]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `variable`
[INFO] [stderr]   --> src/lib.rs:26:30
[INFO] [stderr]    |
[INFO] [stderr] 26 |   pub fn minimise(&mut self, variable: Variable) {}
[INFO] [stderr]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variable`
[INFO] [stderr] 
[INFO] [stderr] warning: field `constraints` is never read
[INFO] [stderr]  --> src/lib.rs:5:3
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Model {
[INFO] [stderr]   |            ----- field in this struct
[INFO] [stderr] 4 |   variables: HashMap<String, Option<f64>>,
[INFO] [stderr] 5 |   constraints: Vec<Constraint>,
[INFO] [stderr]   |   ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `optim` (lib) generated 4 warnings (run `cargo fix --lib -p optim` to apply 3 suggestions)
[INFO] [stderr] warning: `optim` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/optim-7c44f66c50c9b1d3)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/optim-f0efa534c4788f7b)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests optim
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "dd3560f8997b4cbf209a3a67210160017703e8c103cbac837567cee55446274a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd3560f8997b4cbf209a3a67210160017703e8c103cbac837567cee55446274a", kill_on_drop: false }`
[INFO] [stdout] dd3560f8997b4cbf209a3a67210160017703e8c103cbac837567cee55446274a