[INFO] fetching crate unsized-vec 0.0.2-alpha.6...
[INFO] documenting unsized-vec-0.0.2-alpha.6 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate unsized-vec 0.0.2-alpha.6 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate unsized-vec 0.0.2-alpha.6 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate unsized-vec 0.0.2-alpha.6
[INFO] finished tweaking crates.io crate unsized-vec 0.0.2-alpha.6
[INFO] tweaked toml for crates.io crate unsized-vec 0.0.2-alpha.6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate unsized-vec 0.0.2-alpha.6 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded emplacable v0.1.0-alpha.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a03ac17ed36d026ca2b5361397843bdd52cd685ca8cf5b25f21250f3852c5a22
[INFO] running `Command { std: "docker" "start" "-a" "a03ac17ed36d026ca2b5361397843bdd52cd685ca8cf5b25f21250f3852c5a22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a03ac17ed36d026ca2b5361397843bdd52cd685ca8cf5b25f21250f3852c5a22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a03ac17ed36d026ca2b5361397843bdd52cd685ca8cf5b25f21250f3852c5a22", kill_on_drop: false }`
[INFO] [stdout] a03ac17ed36d026ca2b5361397843bdd52cd685ca8cf5b25f21250f3852c5a22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 348e55a8dab757d31c5cc574cf255ebecb5b12b6d84df8bca57dc9a64b4ff1ee
[INFO] running `Command { std: "docker" "start" "-a" "348e55a8dab757d31c5cc574cf255ebecb5b12b6d84df8bca57dc9a64b4ff1ee", kill_on_drop: false }`
[INFO] [stderr]     Checking emplacable v0.1.0-alpha.6
[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/emplacable-0.1.0-alpha.6/src/lib.rs:78:1
[INFO] [stdout]    |
[INFO] [stdout] 78 | / #![feature(
[INFO] [stdout] 79 | |     allocator_api,
[INFO] [stdout] 80 | |     array_zip,
[INFO] [stdout] 81 | |     closure_lifetime_binder,
[INFO] [stdout] ...  |
[INFO] [stdout] 89 | |     unsized_fn_params
[INFO] [stdout] 90 | | )]
[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/emplacable-0.1.0-alpha.6/src/lib.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     allocator_api,
[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/emplacable-0.1.0-alpha.6/src/lib.rs:80:5
[INFO] [stdout]    |
[INFO] [stdout] 80 |     array_zip,
[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/emplacable-0.1.0-alpha.6/src/lib.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     forget_unsized,
[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/emplacable-0.1.0-alpha.6/src/lib.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |     ptr_metadata,
[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/emplacable-0.1.0-alpha.6/src/lib.rs:87:5
[INFO] [stdout]    |
[INFO] [stdout] 87 |     unchecked_math,
[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/emplacable-0.1.0-alpha.6/src/lib.rs:88:5
[INFO] [stdout]    |
[INFO] [stdout] 88 |     unsize,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 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 `emplacable` due to 8 previous errors
[INFO] running `Command { std: "docker" "inspect" "348e55a8dab757d31c5cc574cf255ebecb5b12b6d84df8bca57dc9a64b4ff1ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "348e55a8dab757d31c5cc574cf255ebecb5b12b6d84df8bca57dc9a64b4ff1ee", kill_on_drop: false }`
[INFO] [stdout] 348e55a8dab757d31c5cc574cf255ebecb5b12b6d84df8bca57dc9a64b4ff1ee
