[INFO] fetching crate genetic 0.2.1...
[INFO] checking genetic-0.2.1 against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781
[INFO] extracting crate genetic 0.2.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate genetic 0.2.1 on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate genetic 0.2.1
[INFO] finished tweaking crates.io crate genetic 0.2.1
[INFO] tweaked toml for crates.io crate genetic 0.2.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85f17ed0e98d22ca1c2a5e85539db02e043bae4e32a5d5ea6bd2bf58f3927419
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "85f17ed0e98d22ca1c2a5e85539db02e043bae4e32a5d5ea6bd2bf58f3927419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85f17ed0e98d22ca1c2a5e85539db02e043bae4e32a5d5ea6bd2bf58f3927419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85f17ed0e98d22ca1c2a5e85539db02e043bae4e32a5d5ea6bd2bf58f3927419", kill_on_drop: false }`
[INFO] [stdout] 85f17ed0e98d22ca1c2a5e85539db02e043bae4e32a5d5ea6bd2bf58f3927419
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 961061d860b02b52545602a23a68b1ed99c1ea576d983d567f61ee8f5210b28b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "961061d860b02b52545602a23a68b1ed99c1ea576d983d567f61ee8f5210b28b", kill_on_drop: false }`
[INFO] [stderr]     Checking genetic v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/universe.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |     evaluator: &'a mut Evaluator<T>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Evaluator<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/universe.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |     reproducer: &'b mut Reproducer<T>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^ help: use `dyn`: `dyn Reproducer<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/universe.rs:33:32
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn new(evaluator: &'a mut Evaluator<T>, reproducer: &'b mut Reproducer<T>) -> Universe<'a, 'b, T> {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn Evaluator<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/universe.rs:33:66
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn new(evaluator: &'a mut Evaluator<T>, reproducer: &'b mut Reproducer<T>) -> Universe<'a, 'b, T> {
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Reproducer<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `universe::Universe`
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use universe::Universe;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/universe.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |     evaluator: &'a mut Evaluator<T>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Evaluator<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/universe.rs:23:22
[INFO] [stdout]    |
[INFO] [stdout] 23 |     reproducer: &'b mut Reproducer<T>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^ help: use `dyn`: `dyn Reproducer<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/universe.rs:33:32
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn new(evaluator: &'a mut Evaluator<T>, reproducer: &'b mut Reproducer<T>) -> Universe<'a, 'b, T> {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn Evaluator<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/universe.rs:33:66
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn new(evaluator: &'a mut Evaluator<T>, reproducer: &'b mut Reproducer<T>) -> Universe<'a, 'b, T> {
[INFO] [stdout]    |                                                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Reproducer<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutation_rate`
[INFO] [stdout]   --> src/lib.rs:63:23
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn mutate(&mut self, mutation_rate: f32) {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutation_rate`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `population`
[INFO] [stdout]    --> src/lib.rs:131:28
[INFO] [stdout]     |
[INFO] [stdout] 131 |     fn measure_fitness(&self, population: &mut Vec<LittleAnimal>) {
[INFO] [stdout]     |                               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_population`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `population`
[INFO] [stdout]    --> src/lib.rs:150:22
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn reproduce(&self, population: &mut Vec<LittleAnimal>) {
[INFO] [stdout]     |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_population`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pop_limit`
[INFO] [stdout]   --> src/universe.rs:26:2
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pop_limit: usize,
[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: `from_genome`
[INFO] [stdout]   --> src/lib.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn from_genome(genome: &Vec<u8>) -> LittleAnimal {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |     pub fn new() -> NaturalSelection {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/lib.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn new() -> NaturalReproduction {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mutation_rate`
[INFO] [stdout]   --> src/lib.rs:63:23
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn mutate(&mut self, mutation_rate: f32) {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutation_rate`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `population`
[INFO] [stdout]    --> src/lib.rs:131:28
[INFO] [stdout]     |
[INFO] [stdout] 131 |     fn measure_fitness(&self, population: &mut Vec<LittleAnimal>) {
[INFO] [stdout]     |                               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_population`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `population`
[INFO] [stdout]    --> src/lib.rs:150:22
[INFO] [stdout]     |
[INFO] [stdout] 150 |     fn reproduce(&self, population: &mut Vec<LittleAnimal>) {
[INFO] [stdout]     |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_population`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `pop_limit`
[INFO] [stdout]   --> src/universe.rs:26:2
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pop_limit: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "961061d860b02b52545602a23a68b1ed99c1ea576d983d567f61ee8f5210b28b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "961061d860b02b52545602a23a68b1ed99c1ea576d983d567f61ee8f5210b28b", kill_on_drop: false }`
[INFO] [stdout] 961061d860b02b52545602a23a68b1ed99c1ea576d983d567f61ee8f5210b28b