[INFO] fetching crate generic-str 0.3.1...
[INFO] testing generic-str-0.3.1 against 1.60.0 for beta-1.61-1
[INFO] extracting crate generic-str 0.3.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate generic-str 0.3.1 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate generic-str 0.3.1
[INFO] finished tweaking crates.io crate generic-str 0.3.1
[INFO] tweaked toml for crates.io crate generic-str 0.3.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cl-generic-vec v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9e46ee01495f93afe3e574ed4b1e796cd3190fcf951ab508af55815e835ef82
[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" "d9e46ee01495f93afe3e574ed4b1e796cd3190fcf951ab508af55815e835ef82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9e46ee01495f93afe3e574ed4b1e796cd3190fcf951ab508af55815e835ef82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9e46ee01495f93afe3e574ed4b1e796cd3190fcf951ab508af55815e835ef82", kill_on_drop: false }`
[INFO] [stdout] d9e46ee01495f93afe3e574ed4b1e796cd3190fcf951ab508af55815e835ef82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5fbc7492b68c0498856e86bc7492aa7dab6db39ec21a53769f5d303b8a208ab
[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" "e5fbc7492b68c0498856e86bc7492aa7dab6db39ec21a53769f5d303b8a208ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling cl-generic-vec v0.3.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cl-generic-vec-0.3.4/src/lib.rs:4:5
[INFO] [stdout]    |
[INFO] [stdout] 4  | /     feature(
[INFO] [stdout] 5  | |         trusted_len,
[INFO] [stdout] 6  | |         min_specialization,
[INFO] [stdout] 7  | |         exact_size_is_empty,
[INFO] [stdout] ...  |
[INFO] [stdout] 13 | |         ptr_metadata,
[INFO] [stdout] 14 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cl-generic-vec-0.3.4/src/lib.rs:16:58
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![cfg_attr(all(feature = "nightly", feature = "alloc"), feature(new_uninit))]
[INFO] [stdout]    |                                                          ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cl-generic-vec` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "e5fbc7492b68c0498856e86bc7492aa7dab6db39ec21a53769f5d303b8a208ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5fbc7492b68c0498856e86bc7492aa7dab6db39ec21a53769f5d303b8a208ab", kill_on_drop: false }`
[INFO] [stdout] e5fbc7492b68c0498856e86bc7492aa7dab6db39ec21a53769f5d303b8a208ab