[INFO] fetching crate fat_type 0.3.0...
[INFO] testing fat_type-0.3.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate fat_type 0.3.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate fat_type 0.3.0
[INFO] finished tweaking crates.io crate fat_type 0.3.0
[INFO] tweaked toml for crates.io crate fat_type 0.3.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fat_type 0.3.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1adb4955c037d0de3b0ce9f3cf37ddf30bbc5f9525fb2420308848f58c20521
[INFO] running `Command { std: "docker" "start" "-a" "d1adb4955c037d0de3b0ce9f3cf37ddf30bbc5f9525fb2420308848f58c20521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1adb4955c037d0de3b0ce9f3cf37ddf30bbc5f9525fb2420308848f58c20521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1adb4955c037d0de3b0ce9f3cf37ddf30bbc5f9525fb2420308848f58c20521", kill_on_drop: false }`
[INFO] [stdout] d1adb4955c037d0de3b0ce9f3cf37ddf30bbc5f9525fb2420308848f58c20521
[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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0537acf5b2a127eec8a5c4541283c037f6210c7a89fdf879ba004fa4dae6be50
[INFO] running `Command { std: "docker" "start" "-a" "0537acf5b2a127eec8a5c4541283c037f6210c7a89fdf879ba004fa4dae6be50", kill_on_drop: false }`
[INFO] [stderr]    Compiling fat_type v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(extern_types)]
[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:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | #![feature(layout_for_ptr)]
[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:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(ptr_metadata)]
[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:12:1
[INFO] [stdout]    |
[INFO] [stdout] 12 | #![feature(unsize)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:385:51
[INFO] [stdout]     |
[INFO] [stdout] 385 |         let layout_ptr = ptr::from_raw_parts::<T>(ptr::null(), *metadata);
[INFO] [stdout]     |                          ------------------------ ^^^^^^^^^ cannot infer type of the type parameter `T` declared on the function `null`
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Thin`
[INFO] [stdout] note: required by a bound in `core::ptr::from_raw_parts`
[INFO] [stdout]    --> /rustc/1159e78c4747b02ef996e55082b704c09b970588/library/core/src/ptr/metadata.rs:112:1
[INFO] [stdout] help: consider specifying the generic argument
[INFO] [stdout]     |
[INFO] [stdout] 385 |         let layout_ptr = ptr::from_raw_parts::<T>(ptr::null::<T>(), *metadata);
[INFO] [stdout]     |                                                            +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0283, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fat_type` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "0537acf5b2a127eec8a5c4541283c037f6210c7a89fdf879ba004fa4dae6be50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0537acf5b2a127eec8a5c4541283c037f6210c7a89fdf879ba004fa4dae6be50", kill_on_drop: false }`
[INFO] [stdout] 0537acf5b2a127eec8a5c4541283c037f6210c7a89fdf879ba004fa4dae6be50
