[INFO] fetching crate generic-str 0.3.1...
[INFO] testing generic-str-0.3.1 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate generic-str 0.3.1 into /workspace/builds/worker-5-tc1/source
[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-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate generic-str 0.3.1 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to highest compatible version
[INFO] [stderr]       Adding cl-generic-vec v0.3.4 (available: v0.4.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "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-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3503785e816a4a5dec247c04c7515c7bab705a94a002a751c20c9c216cc1191a
[INFO] running `Command { std: "docker" "start" "3503785e816a4a5dec247c04c7515c7bab705a94a002a751c20c9c216cc1191a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3503785e816a4a5dec247c04c7515c7bab705a94a002a751c20c9c216cc1191a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3503785e816a4a5dec247c04c7515c7bab705a94a002a751c20c9c216cc1191a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3503785e816a4a5dec247c04c7515c7bab705a94a002a751c20c9c216cc1191a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3503785e816a4a5dec247c04c7515c7bab705a94a002a751c20c9c216cc1191a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling cl-generic-vec v0.3.4
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/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]    = help: the feature `const_fn_trait_bound` has been stable since `1.61.0` and no longer requires an attribute to enable
[INFO] [stdout]    = help: the feature `const_mut_refs` has been stable since `1.83.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot specialize on trait `Copy`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/cl-generic-vec-0.3.4/src/extension.rs:81:14
[INFO] [stdout]    |
[INFO] [stdout] 81 |     S::Item: Copy,
[INFO] [stdout]    |              ^^^^
[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` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "3503785e816a4a5dec247c04c7515c7bab705a94a002a751c20c9c216cc1191a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3503785e816a4a5dec247c04c7515c7bab705a94a002a751c20c9c216cc1191a", kill_on_drop: false }`
[INFO] [stdout] 3503785e816a4a5dec247c04c7515c7bab705a94a002a751c20c9c216cc1191a
