[INFO] cloning repository https://github.com/JacobHaig/powder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JacobHaig/powder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobHaig%2Fpowder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobHaig%2Fpowder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ec967f7a53f504a74abdee6835714c007e502fc
[INFO] testing JacobHaig/powder against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJacobHaig%2Fpowder" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JacobHaig/powder on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JacobHaig/powder
[INFO] finished tweaking git repo https://github.com/JacobHaig/powder
[INFO] tweaked toml for git repo https://github.com/JacobHaig/powder written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/JacobHaig/powder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b858fb637c489cbb4cb48b1799aaa9f0ded03916df80608781292b382589d74
[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" "8b858fb637c489cbb4cb48b1799aaa9f0ded03916df80608781292b382589d74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b858fb637c489cbb4cb48b1799aaa9f0ded03916df80608781292b382589d74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b858fb637c489cbb4cb48b1799aaa9f0ded03916df80608781292b382589d74", kill_on_drop: false }`
[INFO] [stdout] 8b858fb637c489cbb4cb48b1799aaa9f0ded03916df80608781292b382589d74
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a716e23ebea726aac5aad1e5fe430fc45ab58d7a4c3fd7dccd85b1c1019531a9
[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" "a716e23ebea726aac5aad1e5fe430fc45ab58d7a4c3fd7dccd85b1c1019531a9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling sdl2 v0.34.5
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling sdl2-sys v0.34.5
[INFO] [stderr]    Compiling num-complex v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num v0.4.0
[INFO] [stderr]    Compiling powder 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(slice_group_by)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `rand::prelude::SliceRandom`
[INFO] [stdout]  --> src/grid.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::prelude::SliceRandom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::slice::GroupBy`
[INFO] [stdout]  --> src/sim.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::slice::GroupBy;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParticalType`
[INFO] [stdout]  --> src/sim.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::grid::{self, Change, Partical, ParticalType};
[INFO] [stdout]   |                                           ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 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 `powder` due to 2 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a716e23ebea726aac5aad1e5fe430fc45ab58d7a4c3fd7dccd85b1c1019531a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a716e23ebea726aac5aad1e5fe430fc45ab58d7a4c3fd7dccd85b1c1019531a9", kill_on_drop: false }`
[INFO] [stdout] a716e23ebea726aac5aad1e5fe430fc45ab58d7a4c3fd7dccd85b1c1019531a9