[INFO] cloning repository https://github.com/fdietze/chromogene
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fdietze/chromogene" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffdietze%2Fchromogene", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffdietze%2Fchromogene'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 391ebde42589af9af8b27a48cf7d465bc933c1f0
[INFO] testing fdietze/chromogene against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffdietze%2Fchromogene" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fdietze/chromogene on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fdietze/chromogene
[INFO] finished tweaking git repo https://github.com/fdietze/chromogene
[INFO] tweaked toml for git repo https://github.com/fdietze/chromogene written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/fdietze/chromogene already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `git://github.com/BurntSushi/rust-stats`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5434a7d9d94f30a584b1af403840ccf1aa31bb040970838b5d93f4de5e408a78
[INFO] running `Command { std: "docker" "start" "-a" "5434a7d9d94f30a584b1af403840ccf1aa31bb040970838b5d93f4de5e408a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5434a7d9d94f30a584b1af403840ccf1aa31bb040970838b5d93f4de5e408a78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5434a7d9d94f30a584b1af403840ccf1aa31bb040970838b5d93f4de5e408a78", kill_on_drop: false }`
[INFO] [stdout] 5434a7d9d94f30a584b1af403840ccf1aa31bb040970838b5d93f4de5e408a78
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8867e0e7a1c2380c1a8f73ce346bb282bb96e741456d640ff00347b8911586fb
[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" "8867e0e7a1c2380c1a8f73ce346bb282bb96e741456d640ff00347b8911586fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling approx v0.1.1
[INFO] [stderr]    Compiling lazy_static v0.1.16
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling streaming-stats v0.2.3 (git://github.com/BurntSushi/rust-stats#aaa17b69)
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling palette v0.2.1
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chromogene v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:54:21
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let direction = try!(line.next().ok_or("expected string").and_then(|string| {
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let stat = try!(line.next().ok_or("expected string").and_then(|string| {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:79:21
[INFO] [stdout]    |
[INFO] [stdout] 79 |     let parameter = try!(line.next().ok_or("expected string").and_then(|string| {
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Lch`, `Rgb`
[INFO] [stdout]   --> src/main.rs:12:20
[INFO] [stdout]    |
[INFO] [stdout] 12 | use palette::{Lab, Lch, Rgb};
[INFO] [stdout]    |                    ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `palette::Limited`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use palette::Limited;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rand`, `Rng`
[INFO] [stdout]   --> src/main.rs:17:24
[INFO] [stdout]    |
[INFO] [stdout] 17 | use rand::{thread_rng, Rng, Rand};
[INFO] [stdout]    |                        ^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IndependentSample`, `Normal`
[INFO] [stdout]   --> src/main.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 | use rand::distributions::{Normal, IndependentSample};
[INFO] [stdout]    |                           ^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::distributions::exponential::Exp1`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use rand::distributions::exponential::Exp1;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `mean`, `stddev`
[INFO] [stdout]   --> src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 | use stats::{stddev, mean};
[INFO] [stdout]    |             ^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Lch`
[INFO] [stdout]  --> src/fitness.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use palette::{Lab, Lch};
[INFO] [stdout]   |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FitnessData`, `StatValues`
[INFO] [stdout]   --> src/main.rs:25:46
[INFO] [stdout]    |
[INFO] [stdout] 25 | use fitness::{ColorSchemeProblemDescription, FitnessData, StatValues};
[INFO] [stdout]    |                                              ^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::distributions::IndependentSample`
[INFO] [stdout]  --> src/genetic.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::distributions::IndependentSample;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ProblemDescription`
[INFO] [stdout]   --> src/main.rs:32:37
[INFO] [stdout]    |
[INFO] [stdout] 32 | use genetic::{Population, Genotype, ProblemDescription};
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::ops::Add;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rand`
[INFO] [stdout]  --> src/genetic.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{Rng, Rand};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `run`
[INFO] [stdout]    --> src/main.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     for run in 0..runs {
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_run`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fixed_dist`
[INFO] [stdout]    --> src/colorscheme.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let fixed_dist: Vec<(&Lab, &Lab, f32)> = descr.fixed_colors
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fixed_dist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `free_dist`
[INFO] [stdout]    --> src/colorscheme.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let free_dist: Vec<(&Lab, &Lab, f32)> = self.free_colors
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_free_dist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]    --> src/colorscheme.rs:193:54
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn crossover<R: Rng>(&self, other: &ColorScheme, rng: &mut R) -> ColorScheme {
[INFO] [stdout]     |                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_col_dist`
[INFO] [stdout]   --> src/color.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn print_col_dist(coldist: (&Lab, &Lab, f32)) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Change`
[INFO] [stdout]   --> src/main.rs:46:6
[INFO] [stdout]    |
[INFO] [stdout] 46 | enum Change {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(slice_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `iter_arith` has been stable since 1.11.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(iter_arith)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.41s
[INFO] running `Command { std: "docker" "inspect" "8867e0e7a1c2380c1a8f73ce346bb282bb96e741456d640ff00347b8911586fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8867e0e7a1c2380c1a8f73ce346bb282bb96e741456d640ff00347b8911586fb", kill_on_drop: false }`
[INFO] [stdout] 8867e0e7a1c2380c1a8f73ce346bb282bb96e741456d640ff00347b8911586fb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3cb3ed899efa7bc95815558cbf7bd53a708aa5771a60a7d475d55fa6521d16a
[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" "d3cb3ed899efa7bc95815558cbf7bd53a708aa5771a60a7d475d55fa6521d16a", kill_on_drop: false }`
[INFO] [stderr]    Compiling chromogene v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:54:21
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let direction = try!(line.next().ok_or("expected string").and_then(|string| {
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:69:16
[INFO] [stdout]    |
[INFO] [stdout] 69 |     let stat = try!(line.next().ok_or("expected string").and_then(|string| {
[INFO] [stdout]    |                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/main.rs:79:21
[INFO] [stdout]    |
[INFO] [stdout] 79 |     let parameter = try!(line.next().ok_or("expected string").and_then(|string| {
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Lch`, `Rgb`
[INFO] [stdout]   --> src/main.rs:12:20
[INFO] [stdout]    |
[INFO] [stdout] 12 | use palette::{Lab, Lch, Rgb};
[INFO] [stdout]    |                    ^^^  ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `palette::Limited`
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use palette::Limited;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Rand`, `Rng`
[INFO] [stdout]   --> src/main.rs:17:24
[INFO] [stdout]    |
[INFO] [stdout] 17 | use rand::{thread_rng, Rng, Rand};
[INFO] [stdout]    |                        ^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `IndependentSample`, `Normal`
[INFO] [stdout]   --> src/main.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 | use rand::distributions::{Normal, IndependentSample};
[INFO] [stdout]    |                           ^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::distributions::exponential::Exp1`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | use rand::distributions::exponential::Exp1;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `mean`, `stddev`
[INFO] [stdout]   --> src/main.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 | use stats::{stddev, mean};
[INFO] [stdout]    |             ^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Lch`
[INFO] [stdout]  --> src/fitness.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use palette::{Lab, Lch};
[INFO] [stdout]   |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `FitnessData`, `StatValues`
[INFO] [stdout]   --> src/main.rs:25:46
[INFO] [stdout]    |
[INFO] [stdout] 25 | use fitness::{ColorSchemeProblemDescription, FitnessData, StatValues};
[INFO] [stdout]    |                                              ^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::distributions::IndependentSample`
[INFO] [stdout]  --> src/genetic.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use rand::distributions::IndependentSample;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ProblemDescription`
[INFO] [stdout]   --> src/main.rs:32:37
[INFO] [stdout]    |
[INFO] [stdout] 32 | use genetic::{Population, Genotype, ProblemDescription};
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Add`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::ops::Add;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Rand`
[INFO] [stdout]  --> src/genetic.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{Rng, Rand};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `run`
[INFO] [stdout]    --> src/main.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     for run in 0..runs {
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_run`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fixed_dist`
[INFO] [stdout]    --> src/colorscheme.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let fixed_dist: Vec<(&Lab, &Lab, f32)> = descr.fixed_colors
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fixed_dist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `free_dist`
[INFO] [stdout]    --> src/colorscheme.rs:118:13
[INFO] [stdout]     |
[INFO] [stdout] 118 |         let free_dist: Vec<(&Lab, &Lab, f32)> = self.free_colors
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_free_dist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rng`
[INFO] [stdout]    --> src/colorscheme.rs:193:54
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn crossover<R: Rng>(&self, other: &ColorScheme, rng: &mut R) -> ColorScheme {
[INFO] [stdout]     |                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_col_dist`
[INFO] [stdout]   --> src/color.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 | pub fn print_col_dist(coldist: (&Lab, &Lab, f32)) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Change`
[INFO] [stdout]   --> src/main.rs:46:6
[INFO] [stdout]    |
[INFO] [stdout] 46 | enum Change {
[INFO] [stdout]    |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(slice_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `iter_arith` has been stable since 1.11.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(iter_arith)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "d3cb3ed899efa7bc95815558cbf7bd53a708aa5771a60a7d475d55fa6521d16a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3cb3ed899efa7bc95815558cbf7bd53a708aa5771a60a7d475d55fa6521d16a", kill_on_drop: false }`
[INFO] [stdout] d3cb3ed899efa7bc95815558cbf7bd53a708aa5771a60a7d475d55fa6521d16a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3bc6502ae011c82c072305a30d0960c042a85be157e95c36b6eff4044d2289ed
[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" "3bc6502ae011c82c072305a30d0960c042a85be157e95c36b6eff4044d2289ed", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:54:21
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let direction = try!(line.next().ok_or("expected string").and_then(|string| {
[INFO] [stderr]    |                     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:69:16
[INFO] [stderr]    |
[INFO] [stderr] 69 |     let stat = try!(line.next().ok_or("expected string").and_then(|string| {
[INFO] [stderr]    |                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/main.rs:79:21
[INFO] [stderr]    |
[INFO] [stderr] 79 |     let parameter = try!(line.next().ok_or("expected string").and_then(|string| {
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Lch`, `Rgb`
[INFO] [stderr]   --> src/main.rs:12:20
[INFO] [stderr]    |
[INFO] [stderr] 12 | use palette::{Lab, Lch, Rgb};
[INFO] [stderr]    |                    ^^^  ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `palette::Limited`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use palette::Limited;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Rand`, `Rng`
[INFO] [stderr]   --> src/main.rs:17:24
[INFO] [stderr]    |
[INFO] [stderr] 17 | use rand::{thread_rng, Rng, Rand};
[INFO] [stderr]    |                        ^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `IndependentSample`, `Normal`
[INFO] [stderr]   --> src/main.rs:18:27
[INFO] [stderr]    |
[INFO] [stderr] 18 | use rand::distributions::{Normal, IndependentSample};
[INFO] [stderr]    |                           ^^^^^^  ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::distributions::exponential::Exp1`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | use rand::distributions::exponential::Exp1;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `mean`, `stddev`
[INFO] [stderr]   --> src/main.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 | use stats::{stddev, mean};
[INFO] [stderr]    |             ^^^^^^  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Lch`
[INFO] [stderr]  --> src/fitness.rs:1:20
[INFO] [stderr]   |
[INFO] [stderr] 1 | use palette::{Lab, Lch};
[INFO] [stderr]   |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `FitnessData`, `StatValues`
[INFO] [stderr]   --> src/main.rs:25:46
[INFO] [stderr]    |
[INFO] [stderr] 25 | use fitness::{ColorSchemeProblemDescription, FitnessData, StatValues};
[INFO] [stderr]    |                                              ^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::distributions::IndependentSample`
[INFO] [stderr]  --> src/genetic.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::distributions::IndependentSample;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ProblemDescription`
[INFO] [stderr]   --> src/main.rs:32:37
[INFO] [stderr]    |
[INFO] [stderr] 32 | use genetic::{Population, Genotype, ProblemDescription};
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::ops::Add`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::ops::Add;
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Rand`
[INFO] [stderr]  --> src/genetic.rs:1:17
[INFO] [stderr]   |
[INFO] [stderr] 1 | use rand::{Rng, Rand};
[INFO] [stderr]   |                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `run`
[INFO] [stderr]    --> src/main.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 |     for run in 0..runs {
[INFO] [stderr]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_run`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `fixed_dist`
[INFO] [stderr]    --> src/colorscheme.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 |         let fixed_dist: Vec<(&Lab, &Lab, f32)> = descr.fixed_colors
[INFO] [stderr]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fixed_dist`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `free_dist`
[INFO] [stderr]    --> src/colorscheme.rs:118:13
[INFO] [stderr]     |
[INFO] [stderr] 118 |         let free_dist: Vec<(&Lab, &Lab, f32)> = self.free_colors
[INFO] [stderr]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_free_dist`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rng`
[INFO] [stderr]    --> src/colorscheme.rs:193:54
[INFO] [stderr]     |
[INFO] [stderr] 193 |     fn crossover<R: Rng>(&self, other: &ColorScheme, rng: &mut R) -> ColorScheme {
[INFO] [stderr]     |                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_rng`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_col_dist`
[INFO] [stderr]   --> src/color.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn print_col_dist(coldist: (&Lab, &Lab, f32)) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Change`
[INFO] [stderr]   --> src/main.rs:46:6
[INFO] [stderr]    |
[INFO] [stderr] 46 | enum Change {
[INFO] [stderr]    |      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(slice_patterns)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `iter_arith` has been stable since 1.11.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(iter_arith)]
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 24 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/chromogene-78b0c36564578905
[INFO] [stdout] 
[INFO] [stdout] running 36 tests
[INFO] [stdout] test color::test::ciede2000_test19 ... ok
[INFO] [stdout] test color::test::ciede2000_test18 ... ok
[INFO] [stdout] test color::test::ciede2000_test24 ... ok
[INFO] [stdout] test color::test::ciede2000_test10 ... ok
[INFO] [stdout] test color::test::ciede2000_test16 ... ok
[INFO] [stdout] test color::test::ciede2000_test29 ... ok
[INFO] [stdout] test color::test::ciede2000_test2 ... ok
[INFO] [stdout] test color::test::ciede2000_test20 ... ok
[INFO] [stdout] test color::test::ciede2000_test222 ... ok
[INFO] [stdout] test color::test::ciede2000_test332 ... ok
[INFO] [stdout] test color::test::ciede2000_test26 ... ok
[INFO] [stdout] test color::test::ciede2000_test3 ... ok
[INFO] [stdout] test color::test::ciede2000_test33 ... ok
[INFO] [stdout] test color::test::ciede2000_test28 ... ok
[INFO] [stdout] test color::test::ciede2000_test27 ... ok
[INFO] [stdout] test color::test::ciede2000_test30 ... ok
[INFO] [stdout] test color::test::ciede2000_test37 ... ok
[INFO] [stdout] test color::test::ciede2000_test38 ... ok
[INFO] [stdout] test color::test::ciede2000_test40 ... ok
[INFO] [stdout] test color::test::ciede2000_test34 ... ok
[INFO] [stdout] test color::test::ciede2000_test39 ... ok
[INFO] [stdout] test color::test::ciede2000_test35 ... ok
[INFO] [stdout] test color::test::ciede2000_test4 ... ok
[INFO] [stdout] test color::test::ciede2000_test36 ... ok
[INFO] [stdout] test color::test::ciede2000_test5 ... ok
[INFO] [stdout] test fitness::test::target_calculate ... ok
[INFO] [stdout] test color::test::ciede2000_test9 ... ok
[INFO] [stdout] test color::test::ciede2000_test6 ... ok
[INFO] [stdout] test color::test::ciede2000_test7 ... ok
[INFO] [stdout] test color::test::ciede2000_test8 ... ok
[INFO] [stdout] test color::test::ciede2000_test114 ... ok
[INFO] [stdout] test color::test::ciede2000_test15 ... ok
[INFO] [stdout] test color::test::ciede2000_test17 ... ok
[INFO] [stdout] test color::test::ciede2000_test25 ... ok
[INFO] [stdout] test color::test::ciede2000_test1 ... ok
[INFO] [stdout] test color::test::ciede2000_test23 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 36 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3bc6502ae011c82c072305a30d0960c042a85be157e95c36b6eff4044d2289ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bc6502ae011c82c072305a30d0960c042a85be157e95c36b6eff4044d2289ed", kill_on_drop: false }`
[INFO] [stdout] 3bc6502ae011c82c072305a30d0960c042a85be157e95c36b6eff4044d2289ed