[INFO] crate rundo 0.4.0 is already in cache
[INFO] checking rundo-0.4.0 against master#fe6d05a8b32f5c66c427ca524dbcce5a7145f87e for pr-64327
[INFO] extracting crate rundo 0.4.0 into work/builds/worker-1/source
[INFO] validating manifest of crates.io crate rundo 0.4.0 on toolchain fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rundo 0.4.0
[INFO] finished tweaking crates.io crate rundo 0.4.0
[INFO] tweaked toml for crates.io crate rundo 0.4.0 written to work/builds/worker-1/source/Cargo.toml
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 819fb962d9bcd48f3acfed2cf41f1a5c2f9bbef5dd5a59afcdc9f46dea1e6efb
[INFO] running `"docker" "start" "-a" "819fb962d9bcd48f3acfed2cf41f1a5c2f9bbef5dd5a59afcdc9f46dea1e6efb"`
[INFO] [stderr]    Compiling difference v2.0.0
[INFO] [stderr]     Checking rundo_types v0.4.0
[INFO] [stderr]    Compiling syn v0.12.15
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking bson v0.11.1
[INFO] [stderr]    Compiling rundo_attrs v0.4.0
[INFO] [stderr]     Checking rundo v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0658]: procedural macros cannot expand to macro definitions
[INFO] [stderr]   --> src/test.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     #[rundo]
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/54727
[INFO] [stderr]    = help: add `#![feature(proc_macro_hygiene)]` to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `proc_macro` has been stable since 1.29.0 and no longer requires an attribute to enable
[INFO] [stderr]    --> src/lib.rs:127:12
[INFO] [stderr]     |
[INFO] [stderr] 127 | #![feature(proc_macro)]
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] error: Could not compile `rundo`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "819fb962d9bcd48f3acfed2cf41f1a5c2f9bbef5dd5a59afcdc9f46dea1e6efb"`
[INFO] running `"docker" "rm" "-f" "819fb962d9bcd48f3acfed2cf41f1a5c2f9bbef5dd5a59afcdc9f46dea1e6efb"`
[INFO] [stdout] 819fb962d9bcd48f3acfed2cf41f1a5c2f9bbef5dd5a59afcdc9f46dea1e6efb