[INFO] cloning repository https://github.com/alanwilhelm/starling-genesis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alanwilhelm/starling-genesis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falanwilhelm%2Fstarling-genesis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falanwilhelm%2Fstarling-genesis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 39c845b4b014123b1473ee6bc3c5188953ade27e
[INFO] testing alanwilhelm/starling-genesis against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falanwilhelm%2Fstarling-genesis" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alanwilhelm/starling-genesis on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/alanwilhelm/starling-genesis
[INFO] finished tweaking git repo https://github.com/alanwilhelm/starling-genesis
[INFO] tweaked toml for git repo https://github.com/alanwilhelm/starling-genesis written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/alanwilhelm/starling-genesis already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfa6a9e703b96372e8397fbce778dd198f01f289ae480d09c5c0372bd041c93c
[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" "dfa6a9e703b96372e8397fbce778dd198f01f289ae480d09c5c0372bd041c93c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfa6a9e703b96372e8397fbce778dd198f01f289ae480d09c5c0372bd041c93c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfa6a9e703b96372e8397fbce778dd198f01f289ae480d09c5c0372bd041c93c", kill_on_drop: false }`
[INFO] [stdout] dfa6a9e703b96372e8397fbce778dd198f01f289ae480d09c5c0372bd041c93c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b82b2e6827831f70dfdad59b2a69d7278fe4ee73745dd5b6a36d6aed3491e27
[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" "1b82b2e6827831f70dfdad59b2a69d7278fe4ee73745dd5b6a36d6aed3491e27", kill_on_drop: false }`
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling base-x v0.2.2
[INFO] [stderr]    Compiling byte-tools v0.1.3
[INFO] [stderr]    Compiling integer-encoding v1.0.5
[INFO] [stderr]    Compiling serde v1.0.55
[INFO] [stderr]    Compiling array-macro v1.0.2
[INFO] [stderr]    Compiling reexport-proc-macro v1.0.2
[INFO] [stderr]    Compiling enumset v0.3.3
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling ncurses v5.91.0
[INFO] [stderr]    Compiling rand v0.3.22
[INFO] [stderr]    Compiling bytes v0.4.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling syn v0.13.10
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling generic-array v0.6.0
[INFO] [stderr]    Compiling num-bigint v0.1.43
[INFO] [stderr]    Compiling digest v0.4.0
[INFO] [stderr]    Compiling digest-buffer v0.2.0
[INFO] [stderr]    Compiling multibase v0.6.0
[INFO] [stderr]    Compiling sha2 v0.4.2
[INFO] [stderr]    Compiling easy-hash v0.1.0
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling tiny-keccak v1.4.1
[INFO] [stderr]    Compiling rayon-core v1.4.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling tokio-fs v0.1.0
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling rayon v0.8.2
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.0
[INFO] [stderr]    Compiling tokio v0.1.6
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling enum-map-derive v0.2.5
[INFO] [stderr]    Compiling ring v0.12.1
[INFO] [stderr]    Compiling enum-map v0.2.29
[INFO] [stderr]    Compiling toml v0.4.6
[INFO] [stderr]    Compiling cursive v0.9.0-alpha.0 (https://github.com/gyscos/Cursive#4a3bbbb9)
[INFO] [stderr]    Compiling multihash v0.7.0
[INFO] [stderr]    Compiling cid v0.2.3
[INFO] [stderr]    Compiling multiaddr v0.3.0
[INFO] [stderr]    Compiling murmur v0.1.0 (https://github.com/alanwilhelm/murmur#26ad0148)
[INFO] [stderr]    Compiling starling v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_step_by)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Receiver`, `Sender`
[INFO] [stdout]  --> src/pow/mod.rs:3:23
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::{Sender, Receiver};
[INFO] [stdout]   |                       ^^^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TextView`
[INFO] [stdout]  --> src/cursive_ui/mod.rs:2:30
[INFO] [stdout]   |
[INFO] [stdout] 2 | use cursive::views::{Dialog, TextView};
[INFO] [stdout]   |                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cursive::Cursive`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use cursive::Cursive;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Dialog`, `TextView`
[INFO] [stdout]   --> src/main.rs:12:22
[INFO] [stdout]    |
[INFO] [stdout] 12 | use cursive::views::{Dialog, TextView};
[INFO] [stdout]    |                      ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `cursive_ui::*`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use cursive_ui::*;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Receiver`, `Sender`
[INFO] [stdout]   --> src/main.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 | use std::sync::mpsc::{Sender, Receiver};
[INFO] [stdout]    |                       ^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 6 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 `starling`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "1b82b2e6827831f70dfdad59b2a69d7278fe4ee73745dd5b6a36d6aed3491e27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b82b2e6827831f70dfdad59b2a69d7278fe4ee73745dd5b6a36d6aed3491e27", kill_on_drop: false }`
[INFO] [stdout] 1b82b2e6827831f70dfdad59b2a69d7278fe4ee73745dd5b6a36d6aed3491e27
