[INFO] cloning repository https://github.com/asimihsan/constraint-solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/asimihsan/constraint-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasimihsan%2Fconstraint-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasimihsan%2Fconstraint-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d94fbcb544080152c97e7acd9e41a355c82f14fa
[INFO] checking asimihsan/constraint-solver against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fasimihsan%2Fconstraint-solver" "/workspace/builds/worker-64/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-64/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/asimihsan/constraint-solver on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/asimihsan/constraint-solver
[INFO] finished tweaking git repo https://github.com/asimihsan/constraint-solver
[INFO] tweaked toml for git repo https://github.com/asimihsan/constraint-solver written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] crate git repo https://github.com/asimihsan/constraint-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5efeecab4c587fc11241bde58cdb4cebc1306b04eefc7b0c81efdc8b293b2dd2
[INFO] running `Command { std: "docker" "start" "-a" "5efeecab4c587fc11241bde58cdb4cebc1306b04eefc7b0c81efdc8b293b2dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5efeecab4c587fc11241bde58cdb4cebc1306b04eefc7b0c81efdc8b293b2dd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5efeecab4c587fc11241bde58cdb4cebc1306b04eefc7b0c81efdc8b293b2dd2", kill_on_drop: false }`
[INFO] [stdout] 5efeecab4c587fc11241bde58cdb4cebc1306b04eefc7b0c81efdc8b293b2dd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9c4d4b0b8636b19c5ef4209eed2a1e39c9d6579d01a3af4e54123608d14e003
[INFO] running `Command { std: "docker" "start" "-a" "c9c4d4b0b8636b19c5ef4209eed2a1e39c9d6579d01a3af4e54123608d14e003", kill_on_drop: false }`
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stderr]     Checking float-ord v0.3.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking blake2 v0.9.2
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking approx v0.5.0
[INFO] [stderr]     Checking euclid v0.22.6
[INFO] [stderr]     Checking hashlink v0.7.0
[INFO] [stderr]     Checking rand_distr v0.4.2
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking math-util v0.1.0 (/opt/rustwide/workdir/math-util)
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking local-search v0.1.0 (/opt/rustwide/workdir/local-search)
[INFO] [stdout] warning: unused variable: `x_min`
[INFO] [stdout]    --> local-search/src/ackley.rs:214:13
[INFO] [stdout]     |
[INFO] [stdout] 214 |         let x_min = -32.768;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_min`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_max`
[INFO] [stdout]    --> local-search/src/ackley.rs:215:13
[INFO] [stdout]     |
[INFO] [stdout] 215 |         let x_max = 32.768;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> local-search/src/iterated_local_search.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |         for i in 0..self.max_iterations {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_min`
[INFO] [stdout]    --> local-search/src/ackley.rs:214:13
[INFO] [stdout]     |
[INFO] [stdout] 214 |         let x_min = -32.768;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_min`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x_max`
[INFO] [stdout]    --> local-search/src/ackley.rs:215:13
[INFO] [stdout]     |
[INFO] [stdout] 215 |         let x_max = 32.768;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_x_max`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> local-search/src/iterated_local_search.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |         for i in 0..self.max_iterations {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> local-search/src/ackley.rs:188:12
[INFO] [stdout]     |
[INFO] [stdout] 188 |     pub fn new(strategy: Vec<(AckleyPerturbationStrategy, u64)>) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> local-search/src/ackley.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn new(x: Vec<FloatOrd<f64>>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_score`
[INFO] [stdout]   --> local-search/src/ackley.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 34 |     pub fn get_score(&self) -> f64 {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> local-search/src/ackley.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn new(dimensions: usize) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> local-search/src/ackley.rs:97:12
[INFO] [stdout]    |
[INFO] [stdout] 97 |     pub fn new(dimensions: usize, min_move_size: f64, max_move_size: f64) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> local-search/src/ackley.rs:188:12
[INFO] [stdout]     |
[INFO] [stdout] 188 |     pub fn new(strategy: Vec<(AckleyPerturbationStrategy, u64)>) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking nqueens v0.1.0 (/opt/rustwide/workdir/examples/nqueens)
[INFO] [stderr]     Checking diagram v0.1.0 (/opt/rustwide/workdir/examples/diagram-box-only)
[INFO] [stdout] warning: unused import: `local_search::iterated_local_search::Perturbation`
[INFO] [stdout]  --> examples/nqueens/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use local_search::iterated_local_search::Perturbation;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MoveProposer`
[INFO] [stdout]  --> examples/nqueens/src/lib.rs:8:31
[INFO] [stdout]   |
[INFO] [stdout] 8 |     InitialSolutionGenerator, MoveProposer, Score, Solution, SolutionScoreCalculator,
[INFO] [stdout]   |                               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `local_search::iterated_local_search::Perturbation`
[INFO] [stdout]  --> examples/nqueens/src/lib.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use local_search::iterated_local_search::Perturbation;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MoveProposer`
[INFO] [stdout]  --> examples/nqueens/src/lib.rs:8:31
[INFO] [stdout]   |
[INFO] [stdout] 8 |     InitialSolutionGenerator, MoveProposer, Score, Solution, SolutionScoreCalculator,
[INFO] [stdout]   |                               ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `GridSizeConstraint`
[INFO] [stdout]   --> examples/diagram-box-only/src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     GridSizeConstraint(GridSizeConstraint),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DiagramSizeConstraint`
[INFO] [stdout]   --> examples/diagram-box-only/src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     DiagramSizeConstraint(DiagramSizeConstraint),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BoxPaddingConstraint`
[INFO] [stdout]   --> examples/diagram-box-only/src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     BoxPaddingConstraint(BoxPaddingConstraint),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BoxVariable`
[INFO] [stdout]   --> examples/diagram-box-only/src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     BoxVariable(BoxVariable),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `GridSizeConstraint`
[INFO] [stdout]   --> examples/diagram-box-only/src/main.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     GridSizeConstraint(GridSizeConstraint),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DiagramSizeConstraint`
[INFO] [stdout]   --> examples/diagram-box-only/src/main.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     DiagramSizeConstraint(DiagramSizeConstraint),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BoxPaddingConstraint`
[INFO] [stdout]   --> examples/diagram-box-only/src/main.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     BoxPaddingConstraint(BoxPaddingConstraint),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `BoxVariable`
[INFO] [stdout]   --> examples/diagram-box-only/src/main.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     BoxVariable(BoxVariable),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.32s
[INFO] running `Command { std: "docker" "inspect" "c9c4d4b0b8636b19c5ef4209eed2a1e39c9d6579d01a3af4e54123608d14e003", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9c4d4b0b8636b19c5ef4209eed2a1e39c9d6579d01a3af4e54123608d14e003", kill_on_drop: false }`
[INFO] [stdout] c9c4d4b0b8636b19c5ef4209eed2a1e39c9d6579d01a3af4e54123608d14e003