[INFO] fetching crate defs 0.1.0...
[INFO] testing defs-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate defs 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate defs 0.1.0 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 defs 0.1.0
[INFO] finished tweaking crates.io crate defs 0.1.0
[INFO] tweaked toml for crates.io crate defs 0.1.0 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-quote-impl v0.3.2
[INFO] [stderr]   Downloaded proc-quote v0.3.2
[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] 52bd999fa20575a3254bbf6fc11740cb80b16eb015bd5a6c28fdd7ce7c62f129
[INFO] running `Command { std: "docker" "start" "-a" "52bd999fa20575a3254bbf6fc11740cb80b16eb015bd5a6c28fdd7ce7c62f129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52bd999fa20575a3254bbf6fc11740cb80b16eb015bd5a6c28fdd7ce7c62f129", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52bd999fa20575a3254bbf6fc11740cb80b16eb015bd5a6c28fdd7ce7c62f129", kill_on_drop: false }`
[INFO] [stdout] 52bd999fa20575a3254bbf6fc11740cb80b16eb015bd5a6c28fdd7ce7c62f129
[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] f7cf3ab2ff3ffeb1842f6b0c5e73538a0f1c84581975fc3bec9526731a07b832
[INFO] running `Command { std: "docker" "start" "-a" "f7cf3ab2ff3ffeb1842f6b0c5e73538a0f1c84581975fc3bec9526731a07b832", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-quote-impl v0.3.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling proc-quote v0.3.2
[INFO] [stderr]    Compiling defs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `proc_macro_error::proc_macro2`
[INFO] [stdout]  --> src/isel_pat.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     proc_macro2::{Group, Ident, Span},
[INFO] [stdout]   |     ^^^^^^^^^^^ could not find `proc_macro2` in `proc_macro_error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `proc_macro2`
[INFO] [stdout]   --> src/isel_pat.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | type TS = proc_macro2::TokenStream;
[INFO] [stdout]    |           ^^^^^^^^^^^ use of undeclared crate or module `proc_macro2`
[INFO] [stdout] 
[INFO] [stdout] 
[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_span)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `*`
[INFO] [stdout]  --> src/isel_pat.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     *,
[INFO] [stdout]   |     ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `defs` due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "f7cf3ab2ff3ffeb1842f6b0c5e73538a0f1c84581975fc3bec9526731a07b832", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7cf3ab2ff3ffeb1842f6b0c5e73538a0f1c84581975fc3bec9526731a07b832", kill_on_drop: false }`
[INFO] [stdout] f7cf3ab2ff3ffeb1842f6b0c5e73538a0f1c84581975fc3bec9526731a07b832