[INFO] fetching crate rustfmt-config_proc_macro 0.1.0...
[INFO] extracting crate rustfmt-config_proc_macro 0.1.0 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/rustfmt-config_proc_macro/0.1.0
[INFO] extracting crate rustfmt-config_proc_macro 0.1.0 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/rustfmt-config_proc_macro/0.1.0
[INFO] validating manifest of rustfmt-config_proc_macro-0.1.0 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 rustfmt-config_proc_macro-0.1.0 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 rustfmt-config_proc_macro-0.1.0
[INFO] finished frobbing rustfmt-config_proc_macro-0.1.0
[INFO] frobbed toml for rustfmt-config_proc_macro-0.1.0 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/rustfmt-config_proc_macro/0.1.0/Cargo.toml
[INFO] started frobbing rustfmt-config_proc_macro-0.1.0
[INFO] finished frobbing rustfmt-config_proc_macro-0.1.0
[INFO] frobbed toml for rustfmt-config_proc_macro-0.1.0 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/rustfmt-config_proc_macro/0.1.0/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 rustfmt-config_proc_macro-0.1.0 against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-2/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/rustfmt-config_proc_macro/0.1.0:/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 61bd678f3b2b6c31d441ecff47bd9d74a29dcd4e4d17659a419b3901621b66b7
[INFO] running `"docker" "start" "-a" "61bd678f3b2b6c31d441ecff47bd9d74a29dcd4e4d17659a419b3901621b66b7"`
[INFO] [stderr]     Checking syn v0.15.39
[INFO] [stderr]    Compiling rustfmt-config_proc_macro v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking serde v1.0.94
[INFO] [stderr] error[E0432]: unresolved import `config_proc_macro`
[INFO] [stderr]   --> tests/smoke.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     use config_proc_macro::config_type;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^ use of undeclared type or module `config_proc_macro`
[INFO] [stderr] 
[INFO] [stderr] error: cannot determine resolution for the attribute macro `config_type`
[INFO] [stderr]   --> tests/smoke.rs:12:7
[INFO] [stderr]    |
[INFO] [stderr] 12 |     #[config_type]
[INFO] [stderr]    |       ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: The attribute `doc_hint` is currently unknown to the compiler and may have meaning added to it in the future
[INFO] [stderr]   --> tests/smoke.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |         #[doc_hint = "foo_bar"]
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/29642
[INFO] [stderr]    = help: add #![feature(custom_attribute)] to the crate attributes to enable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `rustfmt-config_proc_macro`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "61bd678f3b2b6c31d441ecff47bd9d74a29dcd4e4d17659a419b3901621b66b7"`
[INFO] running `"docker" "rm" "-f" "61bd678f3b2b6c31d441ecff47bd9d74a29dcd4e4d17659a419b3901621b66b7"`
[INFO] [stdout] 61bd678f3b2b6c31d441ecff47bd9d74a29dcd4e4d17659a419b3901621b66b7