[INFO] fetching crate slice_trait 0.2.0...
[INFO] building slice_trait-0.2.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate slice_trait 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate slice_trait 0.2.0
[INFO] finished tweaking crates.io crate slice_trait 0.2.0
[INFO] tweaked toml for crates.io crate slice_trait 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate slice_trait 0.2.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate slice_trait 0.2.0 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded moddef v0.2.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c89fc15a436409fe26e0808188bb3e454951b37c6670eb3fced99d76fca78f3b
[INFO] running `Command { std: "docker" "start" "-a" "c89fc15a436409fe26e0808188bb3e454951b37c6670eb3fced99d76fca78f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c89fc15a436409fe26e0808188bb3e454951b37c6670eb3fced99d76fca78f3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c89fc15a436409fe26e0808188bb3e454951b37c6670eb3fced99d76fca78f3b", kill_on_drop: false }`
[INFO] [stdout] c89fc15a436409fe26e0808188bb3e454951b37c6670eb3fced99d76fca78f3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6884ff6d5dee9afe0358ed909dec68fda14edd988ece5a03216539b3bf0edb5e
[INFO] running `Command { std: "docker" "start" "-a" "6884ff6d5dee9afe0358ed909dec68fda14edd988ece5a03216539b3bf0edb5e", kill_on_drop: false }`
[INFO] [stderr]    Compiling moddef v0.2.6
[INFO] [stderr]    Compiling slice_trait v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `const_array_as_mut_slice` has been stable since 1.89.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(const_array_as_mut_slice)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_vec_string_slice` has been stable since 1.87.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:7:40
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![cfg_attr(feature = "alloc", feature(const_vec_string_slice))]
[INFO] [stdout]   |                                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `const_deref`
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_deref)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `slice_trait` (lib) due to 1 previous error; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "6884ff6d5dee9afe0358ed909dec68fda14edd988ece5a03216539b3bf0edb5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6884ff6d5dee9afe0358ed909dec68fda14edd988ece5a03216539b3bf0edb5e", kill_on_drop: false }`
[INFO] [stdout] 6884ff6d5dee9afe0358ed909dec68fda14edd988ece5a03216539b3bf0edb5e