[INFO] crate namedarg_rustc_macro 0.1.1474613452 is already in cache
[INFO] extracting crate namedarg_rustc_macro 0.1.1474613452 into work/ex/beta-1.38-1/sources/1.37.0/reg/namedarg_rustc_macro/0.1.1474613452
[INFO] extracting crate namedarg_rustc_macro 0.1.1474613452 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/namedarg_rustc_macro/0.1.1474613452
[INFO] validating manifest of namedarg_rustc_macro-0.1.1474613452 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of namedarg_rustc_macro-0.1.1474613452 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing namedarg_rustc_macro-0.1.1474613452
[INFO] removed path dependency namedarg_hack from namedarg_rustc_macro-0.1.1474613452
[INFO] finished frobbing namedarg_rustc_macro-0.1.1474613452
[INFO] frobbed toml for namedarg_rustc_macro-0.1.1474613452 written to work/ex/beta-1.38-1/sources/1.37.0/reg/namedarg_rustc_macro/0.1.1474613452/Cargo.toml
[INFO] started frobbing namedarg_rustc_macro-0.1.1474613452
[INFO] removed path dependency namedarg_hack from namedarg_rustc_macro-0.1.1474613452
[INFO] finished frobbing namedarg_rustc_macro-0.1.1474613452
[INFO] frobbed toml for namedarg_rustc_macro-0.1.1474613452 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/namedarg_rustc_macro/0.1.1474613452/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing namedarg_rustc_macro-0.1.1474613452 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/namedarg_rustc_macro/0.1.1474613452:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] ca90fa84a876ded8dea22e7592c72aff51ba2f2087e84ac2e32081874cbb020e
[INFO] running `"docker" "start" "-a" "ca90fa84a876ded8dea22e7592c72aff51ba2f2087e84ac2e32081874cbb020e"`
[INFO] [stderr] warning: unused manifest key: lib.rustc-macro
[INFO] [stderr]    Compiling namedarg_hack v0.1.1474613452
[INFO] [stderr]    Compiling namedarg_rustc_macro v0.1.1474613452 (/opt/crater/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `rustc_macro`
[INFO] [stderr]  --> src/lib.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | extern crate rustc_macro;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `namedarg_rustc_macro`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ca90fa84a876ded8dea22e7592c72aff51ba2f2087e84ac2e32081874cbb020e"`
[INFO] running `"docker" "rm" "-f" "ca90fa84a876ded8dea22e7592c72aff51ba2f2087e84ac2e32081874cbb020e"`
[INFO] [stdout] ca90fa84a876ded8dea22e7592c72aff51ba2f2087e84ac2e32081874cbb020e