[INFO] fetching crate optim 0.2.0...
[INFO] building optim-0.2.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[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 d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 972db3b3bf2f2188e5923366c4178fd41c1477c5ccb6793c73426d95de221bd5
[INFO] running `Command { std: "docker" "start" "-a" "972db3b3bf2f2188e5923366c4178fd41c1477c5ccb6793c73426d95de221bd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "972db3b3bf2f2188e5923366c4178fd41c1477c5ccb6793c73426d95de221bd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "972db3b3bf2f2188e5923366c4178fd41c1477c5ccb6793c73426d95de221bd5", kill_on_drop: false }`
[INFO] [stdout] 972db3b3bf2f2188e5923366c4178fd41c1477c5ccb6793c73426d95de221bd5
[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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39fccbd8142e1e9aa27124ba8a2d06de996f17c95b78bcd6295fa970a052db9c
[INFO] running `Command { std: "docker" "start" "-a" "39fccbd8142e1e9aa27124ba8a2d06de996f17c95b78bcd6295fa970a052db9c", kill_on_drop: false }`
[INFO] [stderr]    Compiling optim v0.2.0 (/opt/rustwide/workdir)
[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]    = note: `#[warn(unused_variables)]` (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]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[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: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 0.62s
[INFO] running `Command { std: "docker" "inspect" "39fccbd8142e1e9aa27124ba8a2d06de996f17c95b78bcd6295fa970a052db9c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39fccbd8142e1e9aa27124ba8a2d06de996f17c95b78bcd6295fa970a052db9c", kill_on_drop: false }`
[INFO] [stdout] 39fccbd8142e1e9aa27124ba8a2d06de996f17c95b78bcd6295fa970a052db9c
[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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f39b6bfcbeb95a1b4f8c2aa9e42cc0e9d27c6babe590dd9e44576f2bf900f906
[INFO] running `Command { std: "docker" "start" "-a" "f39b6bfcbeb95a1b4f8c2aa9e42cc0e9d27c6babe590dd9e44576f2bf900f906", kill_on_drop: false }`
[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]    = note: `#[warn(unused_variables)]` (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]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[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: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: `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]    = note: `#[warn(unused_variables)]` (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]    |                                    ^^^^^^^^^^
[INFO] [stdout]    |
[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: 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 0.62s
[INFO] running `Command { std: "docker" "inspect" "f39b6bfcbeb95a1b4f8c2aa9e42cc0e9d27c6babe590dd9e44576f2bf900f906", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f39b6bfcbeb95a1b4f8c2aa9e42cc0e9d27c6babe590dd9e44576f2bf900f906", kill_on_drop: false }`
[INFO] [stdout] f39b6bfcbeb95a1b4f8c2aa9e42cc0e9d27c6babe590dd9e44576f2bf900f906