[INFO] fetching crate genetic 0.2.1...
[INFO] checking genetic-0.2.1 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate genetic 0.2.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate genetic 0.2.1 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 747beab34627ac8572ddb4824ec14a52a9f8cae3f308df4a4188fc33dc4b74e3
[INFO] running `"docker" "start" "-a" "747beab34627ac8572ddb4824ec14a52a9f8cae3f308df4a4188fc33dc4b74e3"`
[INFO] [stderr]     Checking genetic v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:22:21
[INFO] [stderr]    |
[INFO] [stderr] 22 |     evaluator: &'a mut Evaluator<T>,
[INFO] [stderr]    |                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Evaluator<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:23:22
[INFO] [stderr]    |
[INFO] [stderr] 23 |     reproducer: &'b mut Reproducer<T>,
[INFO] [stderr]    |                         ^^^^^^^^^^^^^ help: use `dyn`: `dyn Reproducer<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:33:32
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn new(evaluator: &'a mut Evaluator<T>, reproducer: &'b mut Reproducer<T>) -> Universe<'a, 'b, T> {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn Evaluator<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:33:66
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn new(evaluator: &'a mut Evaluator<T>, reproducer: &'b mut Reproducer<T>) -> Universe<'a, 'b, T> {
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Reproducer<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `universe::Universe`
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | use universe::Universe;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mutation_rate`
[INFO] [stderr]   --> src/lib.rs:63:23
[INFO] [stderr]    |
[INFO] [stderr] 63 |     fn mutate(&mut self, mutation_rate: f32) {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutation_rate`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `population`
[INFO] [stderr]    --> src/lib.rs:131:28
[INFO] [stderr]     |
[INFO] [stderr] 131 |     fn measure_fitness(&self, population: &mut Vec<LittleAnimal>) {
[INFO] [stderr]     |                               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_population`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `population`
[INFO] [stderr]    --> src/lib.rs:150:22
[INFO] [stderr]     |
[INFO] [stderr] 150 |     fn reproduce(&self, population: &mut Vec<LittleAnimal>) {
[INFO] [stderr]     |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_population`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:22:21
[INFO] [stderr]    |
[INFO] [stderr] 22 |     evaluator: &'a mut Evaluator<T>,
[INFO] [stderr]    |                        ^^^^^^^^^^^^ help: use `dyn`: `dyn Evaluator<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `pop_limit`
[INFO] [stderr]   --> src/universe.rs:26:2
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pop_limit: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_genome`
[INFO] [stderr]   --> src/lib.rs:38:2
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn from_genome(genome: &Vec<u8>) -> LittleAnimal {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:23:22
[INFO] [stderr]    |
[INFO] [stderr] 23 |     reproducer: &'b mut Reproducer<T>,
[INFO] [stderr]    |                         ^^^^^^^^^^^^^ help: use `dyn`: `dyn Reproducer<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/lib.rs:123:2
[INFO] [stderr]     |
[INFO] [stderr] 123 |     pub fn new() -> NaturalSelection {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:33:32
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn new(evaluator: &'a mut Evaluator<T>, reproducer: &'b mut Reproducer<T>) -> Universe<'a, 'b, T> {
[INFO] [stderr]    |                                   ^^^^^^^^^^^^ help: use `dyn`: `dyn Evaluator<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/lib.rs:142:2
[INFO] [stderr]     |
[INFO] [stderr] 142 |     pub fn new() -> NaturalReproduction {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/universe.rs:33:66
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn new(evaluator: &'a mut Evaluator<T>, reproducer: &'b mut Reproducer<T>) -> Universe<'a, 'b, T> {
[INFO] [stderr]    |                                                                     ^^^^^^^^^^^^^ help: use `dyn`: `dyn Reproducer<T>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `mutation_rate`
[INFO] [stderr]   --> src/lib.rs:63:23
[INFO] [stderr]    |
[INFO] [stderr] 63 |     fn mutate(&mut self, mutation_rate: f32) {
[INFO] [stderr]    |                          ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_mutation_rate`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `population`
[INFO] [stderr]    --> src/lib.rs:131:28
[INFO] [stderr]     |
[INFO] [stderr] 131 |     fn measure_fitness(&self, population: &mut Vec<LittleAnimal>) {
[INFO] [stderr]     |                               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_population`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `population`
[INFO] [stderr]    --> src/lib.rs:150:22
[INFO] [stderr]     |
[INFO] [stderr] 150 |     fn reproduce(&self, population: &mut Vec<LittleAnimal>) {
[INFO] [stderr]     |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_population`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `pop_limit`
[INFO] [stderr]   --> src/universe.rs:26:2
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pop_limit: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 8 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.56s
[INFO] running `"docker" "inspect" "747beab34627ac8572ddb4824ec14a52a9f8cae3f308df4a4188fc33dc4b74e3"`
[INFO] running `"docker" "rm" "-f" "747beab34627ac8572ddb4824ec14a52a9f8cae3f308df4a4188fc33dc4b74e3"`
[INFO] [stdout] 747beab34627ac8572ddb4824ec14a52a9f8cae3f308df4a4188fc33dc4b74e3