[INFO] fetching crate paw-attributes 1.0.0...
[INFO] extracting crate paw-attributes 1.0.0 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/paw-attributes/1.0.0
[INFO] extracting crate paw-attributes 1.0.0 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/paw-attributes/1.0.0
[INFO] validating manifest of paw-attributes-1.0.0 on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of paw-attributes-1.0.0 on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing paw-attributes-1.0.0
[INFO] finished frobbing paw-attributes-1.0.0
[INFO] frobbed toml for paw-attributes-1.0.0 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/paw-attributes/1.0.0/Cargo.toml
[INFO] started frobbing paw-attributes-1.0.0
[INFO] finished frobbing paw-attributes-1.0.0
[INFO] frobbed toml for paw-attributes-1.0.0 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/paw-attributes/1.0.0/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking paw-attributes-1.0.0 against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-3/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/paw-attributes/1.0.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 66ec68c15bdae6611a0315e05cd2a1a396b2030ebb526f3de49d8273daad5756
[INFO] running `"docker" "start" "-a" "66ec68c15bdae6611a0315e05cd2a1a396b2030ebb526f3de49d8273daad5756"`
[INFO] [stderr]     Checking syn v0.15.39
[INFO] [stderr]     Checking paw-attributes v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0659]: `main` is ambiguous (built-in attribute vs any other name)
[INFO] [stderr]   |
[INFO] [stderr]   = note: `main` could refer to a built-in attribute
[INFO] [stderr] note: `main` could also refer to the crate-local procedural macro defined here
[INFO] [stderr]  --> src/lib.rs:16:1
[INFO] [stderr]   |
[INFO] [stderr] 16| / pub fn main(_attr: TokenStream, item: TokenStream) -> TokenStream {
[INFO] [stderr] 17| |     let input = syn::parse_macro_input!(item as syn::ItemFn);
[INFO] [stderr] 18| |
[INFO] [stderr] 19| |     let ret = &input.decl.output;
[INFO] [stderr] ... |
[INFO] [stderr] 76| |     result.into()
[INFO] [stderr] 77| | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   = help: use `crate::main` to refer to this crate-local procedural macro unambiguously
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0659`.
[INFO] [stderr] error: Could not compile `paw-attributes`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "66ec68c15bdae6611a0315e05cd2a1a396b2030ebb526f3de49d8273daad5756"`
[INFO] running `"docker" "rm" "-f" "66ec68c15bdae6611a0315e05cd2a1a396b2030ebb526f3de49d8273daad5756"`
[INFO] [stdout] 66ec68c15bdae6611a0315e05cd2a1a396b2030ebb526f3de49d8273daad5756