[INFO] fetching crate static-reflect 0.2.0-alpha.6...
[INFO] testing static-reflect-0.2.0-alpha.6 against 1.60.0 for beta-1.61-1
[INFO] extracting crate static-reflect 0.2.0-alpha.6 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate static-reflect 0.2.0-alpha.6 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 static-reflect 0.2.0-alpha.6
[INFO] finished tweaking crates.io crate static-reflect 0.2.0-alpha.6
[INFO] tweaked toml for crates.io crate static-reflect 0.2.0-alpha.6 written to /workspace/builds/worker-26/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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-kwargs-derive v0.1.5
[INFO] [stderr]   Downloaded proc-macro-kwargs v0.1.5
[INFO] [stderr]   Downloaded inherent v1.0.1
[INFO] [stderr]   Downloaded zerogc-derive v0.2.0-alpha.6
[INFO] [stderr]   Downloaded zerogc v0.2.0-alpha.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e4993364575488269bbecfb6f14eeb25c1ca90f2019926d45a891e5605042f8d
[INFO] running `Command { std: "docker" "start" "-a" "e4993364575488269bbecfb6f14eeb25c1ca90f2019926d45a891e5605042f8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e4993364575488269bbecfb6f14eeb25c1ca90f2019926d45a891e5605042f8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4993364575488269bbecfb6f14eeb25c1ca90f2019926d45a891e5605042f8d", kill_on_drop: false }`
[INFO] [stdout] e4993364575488269bbecfb6f14eeb25c1ca90f2019926d45a891e5605042f8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 777f480db28f1603546a867543fcf8f9a66c9d940c0756afc74a1780cb422022
[INFO] running `Command { std: "docker" "start" "-a" "777f480db28f1603546a867543fcf8f9a66c9d940c0756afc74a1780cb422022", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling static-reflect v0.2.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | / #![feature(
[INFO] [stdout] 14 | |     const_option, // We use Option::unwrap
[INFO] [stdout] 15 | |     const_fn_fn_ptr_basics, // We use PhantomData<fn() -> T>
[INFO] [stdout] 16 | |     const_fn_trait_bound,
[INFO] [stdout] 17 | |     // Used for field_offset macro
[INFO] [stdout] 18 | |     const_ptr_offset_from,
[INFO] [stdout] 19 | | )]
[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:20:32
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![cfg_attr(feature = "never", feature(never_type))]
[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 `static-reflect` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "777f480db28f1603546a867543fcf8f9a66c9d940c0756afc74a1780cb422022", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "777f480db28f1603546a867543fcf8f9a66c9d940c0756afc74a1780cb422022", kill_on_drop: false }`
[INFO] [stdout] 777f480db28f1603546a867543fcf8f9a66c9d940c0756afc74a1780cb422022