[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 beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffdietze%2Fchromogene" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fdietze/chromogene on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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-8/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" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `git://github.com/BurntSushi/rust-stats`
[INFO] [stderr] error: the lock file /workspace/builds/worker-8/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[INFO] the lockfile is outdated, regenerating it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" "+beta-2020-07-24" "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" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded palette v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] 675c5c7bca6f0b42296ab2f943edf3036bd7ab6b38cbee81447e2ecd8028d863
[INFO] running `Command { std: "docker" "start" "-a" "675c5c7bca6f0b42296ab2f943edf3036bd7ab6b38cbee81447e2ecd8028d863", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "675c5c7bca6f0b42296ab2f943edf3036bd7ab6b38cbee81447e2ecd8028d863", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "675c5c7bca6f0b42296ab2f943edf3036bd7ab6b38cbee81447e2ecd8028d863", kill_on_drop: false }`
[INFO] [stdout] 675c5c7bca6f0b42296ab2f943edf3036bd7ab6b38cbee81447e2ecd8028d863
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb9d3d7e31b22d65c6ce531d92921cef0f4a2044944bf8c20775b51567df03d3
[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" "fb9d3d7e31b22d65c6ce531d92921cef0f4a2044944bf8c20775b51567df03d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling approx v0.1.1
[INFO] [stderr]    Compiling lazy_static v0.1.16
[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_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand v0.4.6
[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_isaac v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling num-complex v0.1.43
[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-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chromogene v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(iter_arith)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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] error: aborting due to 2 previous errors; 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `chromogene`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "fb9d3d7e31b22d65c6ce531d92921cef0f4a2044944bf8c20775b51567df03d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb9d3d7e31b22d65c6ce531d92921cef0f4a2044944bf8c20775b51567df03d3", kill_on_drop: false }`
[INFO] [stdout] fb9d3d7e31b22d65c6ce531d92921cef0f4a2044944bf8c20775b51567df03d3