[INFO] fetching crate pelt 0.1.0...
[INFO] testing pelt-0.1.0 against 1.76.0 for beta-1.77-1
[INFO] extracting crate pelt 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate pelt 0.1.0 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pelt 0.1.0
[INFO] finished tweaking crates.io crate pelt 0.1.0
[INFO] tweaked toml for crates.io crate pelt 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate pelt 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0df15352cda8b9e0889b40acf9b35ee82390d744b03685f5730fdfc37830ced
[INFO] running `Command { std: "docker" "start" "-a" "f0df15352cda8b9e0889b40acf9b35ee82390d744b03685f5730fdfc37830ced", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0df15352cda8b9e0889b40acf9b35ee82390d744b03685f5730fdfc37830ced", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0df15352cda8b9e0889b40acf9b35ee82390d744b03685f5730fdfc37830ced", kill_on_drop: false }`
[INFO] [stdout] f0df15352cda8b9e0889b40acf9b35ee82390d744b03685f5730fdfc37830ced
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbab8bfae0dfae1551335e98551987098ee4ac9ed1ff30b98d2fd80d8292571e
[INFO] running `Command { std: "docker" "start" "-a" "fbab8bfae0dfae1551335e98551987098ee4ac9ed1ff30b98d2fd80d8292571e", kill_on_drop: false }`
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling pelt 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:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 | #![feature(test)]
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![feature(slice_partition_at_index)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `slice_partition_at_index`
[INFO] [stdout]   --> src/lib.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | #![feature(slice_partition_at_index)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `partition_at_index_by` found for struct `Vec<f64>` in the current scope
[INFO] [stdout]   --> src/cost.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 36 |         *x.partition_at_index_by(idx, |a, b| a.partial_cmp(b).unwrap())
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^ help: there is a method with a similar name: `partition_point`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pelt` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "fbab8bfae0dfae1551335e98551987098ee4ac9ed1ff30b98d2fd80d8292571e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbab8bfae0dfae1551335e98551987098ee4ac9ed1ff30b98d2fd80d8292571e", kill_on_drop: false }`
[INFO] [stdout] fbab8bfae0dfae1551335e98551987098ee4ac9ed1ff30b98d2fd80d8292571e
