[INFO] cloning repository https://github.com/quelledanielle/palette-town
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/quelledanielle/palette-town" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquelledanielle%2Fpalette-town", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquelledanielle%2Fpalette-town'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0b2ab153ec18d143727b71e8ae0b82f6a590e056
[INFO] testing quelledanielle/palette-town against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fquelledanielle%2Fpalette-town" "/workspace/builds/worker-84/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-84/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/quelledanielle/palette-town on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/quelledanielle/palette-town
[INFO] finished tweaking git repo https://github.com/quelledanielle/palette-town
[INFO] tweaked toml for git repo https://github.com/quelledanielle/palette-town written to /workspace/builds/worker-84/source/Cargo.toml
[INFO] crate git repo https://github.com/quelledanielle/palette-town already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 328321add6e28afe8216e78decbfa4dba3e23d289c0c87fe23f08dbc036aeab0
[INFO] running `Command { std: "docker" "start" "-a" "328321add6e28afe8216e78decbfa4dba3e23d289c0c87fe23f08dbc036aeab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "328321add6e28afe8216e78decbfa4dba3e23d289c0c87fe23f08dbc036aeab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "328321add6e28afe8216e78decbfa4dba3e23d289c0c87fe23f08dbc036aeab0", kill_on_drop: false }`
[INFO] [stdout] 328321add6e28afe8216e78decbfa4dba3e23d289c0c87fe23f08dbc036aeab0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-84/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c090f61213cb4bb4c0c0f9e3682589ffe3f0532fc8dc2dfc86acb3b8a12b8d4
[INFO] running `Command { std: "docker" "start" "-a" "1c090f61213cb4bb4c0c0f9e3682589ffe3f0532fc8dc2dfc86acb3b8a12b8d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling palette-town v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_step_by)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `iterator_step_by` has been stable since 1.28.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_step_by)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning 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 `palette-town` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "1c090f61213cb4bb4c0c0f9e3682589ffe3f0532fc8dc2dfc86acb3b8a12b8d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c090f61213cb4bb4c0c0f9e3682589ffe3f0532fc8dc2dfc86acb3b8a12b8d4", kill_on_drop: false }`
[INFO] [stdout] 1c090f61213cb4bb4c0c0f9e3682589ffe3f0532fc8dc2dfc86acb3b8a12b8d4