[INFO] fetching crate msiz_rustc-ap-rustc_macros 3.0.0...
[INFO] testing msiz_rustc-ap-rustc_macros-3.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate msiz_rustc-ap-rustc_macros 3.0.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate msiz_rustc-ap-rustc_macros 3.0.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate msiz_rustc-ap-rustc_macros 3.0.0
[INFO] finished tweaking crates.io crate msiz_rustc-ap-rustc_macros 3.0.0
[INFO] tweaked toml for crates.io crate msiz_rustc-ap-rustc_macros 3.0.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6da36426b0407bb9d5bd931083731023ecedd159adbe036683a1e8a3875ac9f
[INFO] running `Command { std: "docker" "start" "-a" "a6da36426b0407bb9d5bd931083731023ecedd159adbe036683a1e8a3875ac9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6da36426b0407bb9d5bd931083731023ecedd159adbe036683a1e8a3875ac9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6da36426b0407bb9d5bd931083731023ecedd159adbe036683a1e8a3875ac9f", kill_on_drop: false }`
[INFO] [stdout] a6da36426b0407bb9d5bd931083731023ecedd159adbe036683a1e8a3875ac9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f856e55dcdef3f5f57726f595f92c5ef488b7689656a46efb72c31ab2e72be80
[INFO] running `Command { std: "docker" "start" "-a" "f856e55dcdef3f5f57726f595f92c5ef488b7689656a46efb72c31ab2e72be80", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling msiz_rustc-ap-rustc_macros v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0034]: multiple applicable items in scope
[INFO] [stdout]    --> src/query.rs:477:45
[INFO] [stdout]     |
[INFO] [stdout] 477 |             for e in attributes.into_iter().intersperse(quote! {,}) {
[INFO] [stdout]     |                                             ^^^^^^^^^^^ multiple `intersperse` found
[INFO] [stdout]     |
[INFO] [stdout]     = note: candidate #1 is defined in an impl of the trait `Iterator` for the type `std::vec::IntoIter<T, A>`
[INFO] [stdout]     = note: candidate #2 is defined in an impl of the trait `Itertools` for the type `T`
[INFO] [stdout] help: disambiguate the associated function for candidate #1
[INFO] [stdout]     |
[INFO] [stdout] 477 ~             for e in Iterator::intersperse(attributes.into_iter(), {
[INFO] [stdout] 478 +         let mut _s = $crate::__rt::TokenStream::new();
[INFO] [stdout] 479 +         let _span = $span;
[INFO] [stdout] 480 +         quote_each_token!(_s _span $($tt)*);
[INFO] [stdout] 481 +         _s
[INFO] [stdout] 482 ~     }) {
[INFO] [stdout]     |
[INFO] [stdout] help: disambiguate the associated function for candidate #2
[INFO] [stdout]     |
[INFO] [stdout] 477 ~             for e in Itertools::intersperse(attributes.into_iter(), {
[INFO] [stdout] 478 +         let mut _s = $crate::__rt::TokenStream::new();
[INFO] [stdout] 479 +         let _span = $span;
[INFO] [stdout] 480 +         quote_each_token!(_s _span $($tt)*);
[INFO] [stdout] 481 +         _s
[INFO] [stdout] 482 ~     }) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::Itertools`
[INFO] [stdout]   --> src/query.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use itertools::Itertools;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0034, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0034`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `msiz_rustc-ap-rustc_macros` due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "f856e55dcdef3f5f57726f595f92c5ef488b7689656a46efb72c31ab2e72be80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f856e55dcdef3f5f57726f595f92c5ef488b7689656a46efb72c31ab2e72be80", kill_on_drop: false }`
[INFO] [stdout] f856e55dcdef3f5f57726f595f92c5ef488b7689656a46efb72c31ab2e72be80