[INFO] fetching crate metasolver 0.0.1...
[INFO] checking metasolver-0.0.1 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate metasolver 0.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate metasolver 0.0.1 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metasolver 0.0.1
[INFO] finished tweaking crates.io crate metasolver 0.0.1
[INFO] tweaked toml for crates.io crate metasolver 0.0.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 54cedbfdb9d17ff5666e03dd952fbd5d1e46433b4c5fe3a4d1b64c83b8744a45
[INFO] running `Command { std: "docker" "start" "-a" "54cedbfdb9d17ff5666e03dd952fbd5d1e46433b4c5fe3a4d1b64c83b8744a45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "54cedbfdb9d17ff5666e03dd952fbd5d1e46433b4c5fe3a4d1b64c83b8744a45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54cedbfdb9d17ff5666e03dd952fbd5d1e46433b4c5fe3a4d1b64c83b8744a45", kill_on_drop: false }`
[INFO] [stdout] 54cedbfdb9d17ff5666e03dd952fbd5d1e46433b4c5fe3a4d1b64c83b8744a45
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c24fc70a2ce3ee33b6a13626d3fb7df95102c3129cf71f7b7c7d6a3f23997a18
[INFO] running `Command { std: "docker" "start" "-a" "c24fc70a2ce3ee33b6a13626d3fb7df95102c3129cf71f7b7c7d6a3f23997a18", kill_on_drop: false }`
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking metasolver v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/simulated_annealing/mod.rs:28:35
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn apply_neighbour(&mut self, Self::Neighbour);
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Self::Neighbour`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/simulated_annealing/mod.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn neighbour_fitness(&self, &Self::Neighbour) -> f32;
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Neighbour`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/simulated_annealing/mod.rs:49:21
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn update(self, &T) -> Self;
[INFO] [stdout]    |                     ^^ help: try naming the parameter or explicitly ignoring it: `_: &T`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/simulated_annealing/mod.rs:28:35
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn apply_neighbour(&mut self, Self::Neighbour);
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Self::Neighbour`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/simulated_annealing/mod.rs:29:33
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn neighbour_fitness(&self, &Self::Neighbour) -> f32;
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Neighbour`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/simulated_annealing/mod.rs:49:21
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn update(self, &T) -> Self;
[INFO] [stdout]    |                     ^^ help: try naming the parameter or explicitly ignoring it: `_: &T`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `solution_formula` should have an upper camel case name
[INFO] [stdout]   --> examples/simulated_annealing_formula.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct solution_formula {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `SolutionFormula`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "c24fc70a2ce3ee33b6a13626d3fb7df95102c3129cf71f7b7c7d6a3f23997a18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c24fc70a2ce3ee33b6a13626d3fb7df95102c3129cf71f7b7c7d6a3f23997a18", kill_on_drop: false }`
[INFO] [stdout] c24fc70a2ce3ee33b6a13626d3fb7df95102c3129cf71f7b7c7d6a3f23997a18