[INFO] crate binary_macros 0.6.3 is already in cache
[INFO] extracting crate binary_macros 0.6.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/binary_macros/0.6.3
[INFO] extracting crate binary_macros 0.6.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/binary_macros/0.6.3
[INFO] validating manifest of binary_macros-0.6.3 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 binary_macros-0.6.3 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 binary_macros-0.6.3
[INFO] finished frobbing binary_macros-0.6.3
[INFO] frobbed toml for binary_macros-0.6.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/binary_macros/0.6.3/Cargo.toml
[INFO] started frobbing binary_macros-0.6.3
[INFO] finished frobbing binary_macros-0.6.3
[INFO] frobbed toml for binary_macros-0.6.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/binary_macros/0.6.3/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] [stderr]     Blocking waiting for file lock on package cache
[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 binary_macros-0.6.3 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/binary_macros/0.6.3:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 4d0f0f3b1f01195b366ac4fa8e2c37bc4f177cea8074e8aa92f9015e09b653ec
[INFO] running `"docker" "start" "-a" "4d0f0f3b1f01195b366ac4fa8e2c37bc4f177cea8074e8aa92f9015e09b653ec"`
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.3.3
[INFO] [stderr]    Compiling data-encoding v1.2.0
[INFO] [stderr]    Compiling proc-macro-hack v0.3.3
[INFO] [stderr]    Compiling binary_macros_impl v0.6.0
[INFO] [stderr]    Compiling binary_macros v0.6.3 (/opt/crater/workdir)
[INFO] [stderr] error: proc-macro derive panicked
[INFO] [stderr]   --> src/lib.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | proc_macro_expr_decl!(base2! => base2_impl);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: message: assertion failed: `(left == right)`
[INFO] [stderr]              left: `Some("#[allow(unused,")`,
[INFO] [stderr]             right: `Some("#[allow(unused")`
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `binary_macros`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "4d0f0f3b1f01195b366ac4fa8e2c37bc4f177cea8074e8aa92f9015e09b653ec"`
[INFO] running `"docker" "rm" "-f" "4d0f0f3b1f01195b366ac4fa8e2c37bc4f177cea8074e8aa92f9015e09b653ec"`
[INFO] [stdout] 4d0f0f3b1f01195b366ac4fa8e2c37bc4f177cea8074e8aa92f9015e09b653ec