[INFO] fetching crate optim 0.2.0...
[INFO] testing optim-0.2.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate optim 0.2.0 into /workspace/builds/worker-1-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-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate optim 0.2.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82d1106ae2235bf95c9136482c9cdc2122f6556e305e8ca1093f77b6c65a50dc
[INFO] running `Command { std: "docker" "start" "-a" "82d1106ae2235bf95c9136482c9cdc2122f6556e305e8ca1093f77b6c65a50dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82d1106ae2235bf95c9136482c9cdc2122f6556e305e8ca1093f77b6c65a50dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82d1106ae2235bf95c9136482c9cdc2122f6556e305e8ca1093f77b6c65a50dc", kill_on_drop: false }`
[INFO] [stdout] 82d1106ae2235bf95c9136482c9cdc2122f6556e305e8ca1093f77b6c65a50dc
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7abdf84f7a120ed26d24c02e65103b6295d44996ac53178e28b8b7f7378791ea
[INFO] running `Command { std: "docker" "start" "-a" "7abdf84f7a120ed26d24c02e65103b6295d44996ac53178e28b8b7f7378791ea", 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]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn add_constraint(&mut self, _constraint: Constraint) {}
[INFO] [stdout]    |                                    +
[INFO] [stdout] help: you might have meant to pattern match on the similarly named struct `Constraint` (notice the capitalization)
[INFO] [stdout]    |
[INFO] [stdout] 24 -   pub fn add_constraint(&mut self, constraint: Constraint) {}
[INFO] [stdout] 24 +   pub fn add_constraint(&mut self, Constraint: Constraint) {}
[INFO] [stdout]    |
[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 0.55s
[INFO] running `Command { std: "docker" "inspect" "7abdf84f7a120ed26d24c02e65103b6295d44996ac53178e28b8b7f7378791ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7abdf84f7a120ed26d24c02e65103b6295d44996ac53178e28b8b7f7378791ea", kill_on_drop: false }`
[INFO] [stdout] 7abdf84f7a120ed26d24c02e65103b6295d44996ac53178e28b8b7f7378791ea
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63ed604e8450baeabcc8fb8d95bf8d65e1c3218b652274ef2794cd106f176150
[INFO] running `Command { std: "docker" "start" "-a" "63ed604e8450baeabcc8fb8d95bf8d65e1c3218b652274ef2794cd106f176150", kill_on_drop: false }`
[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]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn add_constraint(&mut self, _constraint: Constraint) {}
[INFO] [stdout]    |                                    +
[INFO] [stdout] help: you might have meant to pattern match on the similarly named struct `Constraint` (notice the capitalization)
[INFO] [stdout]    |
[INFO] [stdout] 24 -   pub fn add_constraint(&mut self, constraint: Constraint) {}
[INFO] [stdout] 24 +   pub fn add_constraint(&mut self, Constraint: Constraint) {}
[INFO] [stdout]    |
[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]    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]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: if this is intentional, prefix it with an underscore
[INFO] [stdout]    |
[INFO] [stdout] 24 |   pub fn add_constraint(&mut self, _constraint: Constraint) {}
[INFO] [stdout]    |                                    +
[INFO] [stdout] help: you might have meant to pattern match on the similarly named struct `Constraint` (notice the capitalization)
[INFO] [stdout]    |
[INFO] [stdout] 24 -   pub fn add_constraint(&mut self, constraint: Constraint) {}
[INFO] [stdout] 24 +   pub fn add_constraint(&mut self, Constraint: Constraint) {}
[INFO] [stdout]    |
[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 0.59s
[INFO] running `Command { std: "docker" "inspect" "63ed604e8450baeabcc8fb8d95bf8d65e1c3218b652274ef2794cd106f176150", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63ed604e8450baeabcc8fb8d95bf8d65e1c3218b652274ef2794cd106f176150", kill_on_drop: false }`
[INFO] [stdout] 63ed604e8450baeabcc8fb8d95bf8d65e1c3218b652274ef2794cd106f176150
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4dc372d746e4a1902b4bd9c07bdbf95102e8405a2632cfdb9dae7d96d49125d1
[INFO] running `Command { std: "docker" "start" "-a" "4dc372d746e4a1902b4bd9c07bdbf95102e8405a2632cfdb9dae7d96d49125d1", kill_on_drop: false }`
[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]    |                                    ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: if this is intentional, prefix it with an underscore
[INFO] [stderr]    |
[INFO] [stderr] 24 |   pub fn add_constraint(&mut self, _constraint: Constraint) {}
[INFO] [stderr]    |                                    +
[INFO] [stderr] help: you might have meant to pattern match on the similarly named struct `Constraint` (notice the capitalization)
[INFO] [stderr]    |
[INFO] [stderr] 24 -   pub fn add_constraint(&mut self, constraint: Constraint) {}
[INFO] [stderr] 24 +   pub fn add_constraint(&mut self, Constraint: Constraint) {}
[INFO] [stderr]    |
[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 1 suggestion)
[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] [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]      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 0.01s
[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" "4dc372d746e4a1902b4bd9c07bdbf95102e8405a2632cfdb9dae7d96d49125d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4dc372d746e4a1902b4bd9c07bdbf95102e8405a2632cfdb9dae7d96d49125d1", kill_on_drop: false }`
[INFO] [stdout] 4dc372d746e4a1902b4bd9c07bdbf95102e8405a2632cfdb9dae7d96d49125d1