[INFO] fetching crate proc-macro-rules 0.2.1...
[INFO] checking proc-macro-rules-0.2.1 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate proc-macro-rules 0.2.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate proc-macro-rules 0.2.1 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate proc-macro-rules 0.2.1
[INFO] removed 1 missing examples
[INFO] finished tweaking crates.io crate proc-macro-rules 0.2.1
[INFO] tweaked toml for crates.io crate proc-macro-rules 0.2.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ccf459dd512b94f9fdfe7399b7bcc83bfd8c3cee4767cfb10906b38492bb19f4
[INFO] running `"docker" "start" "-a" "ccf459dd512b94f9fdfe7399b7bcc83bfd8c3cee4767cfb10906b38492bb19f4"`
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]    Compiling proc-macro-rules-macros v0.2.0
[INFO] [stderr]     Checking proc-macro-rules v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: the `#[proc_macro]` attribute is only usable with crates of the `proc-macro` crate type
[INFO] [stderr]   --> examples/macro_rules.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | #[proc_macro]
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `macro_rules`
[INFO] [stderr]   --> examples/macro_rules.rs:9:1
[INFO] [stderr]    |
[INFO] [stderr] 9  | / #![allow(unused_macros)]
[INFO] [stderr] 10 | |
[INFO] [stderr] 11 | | extern crate proc_macro;
[INFO] [stderr] 12 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 47 | |     }).into()
[INFO] [stderr] 48 | | }
[INFO] [stderr]    | |_^ consider adding a `main` function to `examples/macro_rules.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `proc-macro-rules`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ccf459dd512b94f9fdfe7399b7bcc83bfd8c3cee4767cfb10906b38492bb19f4"`
[INFO] running `"docker" "rm" "-f" "ccf459dd512b94f9fdfe7399b7bcc83bfd8c3cee4767cfb10906b38492bb19f4"`
[INFO] [stdout] ccf459dd512b94f9fdfe7399b7bcc83bfd8c3cee4767cfb10906b38492bb19f4