[INFO] fetching crate debug-helper 0.3.5...
[INFO] extracting crate debug-helper 0.3.5 into work/ex/beta-1.37-6/sources/1.36.0/reg/debug-helper/0.3.5
[INFO] extracting crate debug-helper 0.3.5 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/debug-helper/0.3.5
[INFO] validating manifest of debug-helper-0.3.5 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of debug-helper-0.3.5 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing debug-helper-0.3.5
[INFO] finished frobbing debug-helper-0.3.5
[INFO] frobbed toml for debug-helper-0.3.5 written to work/ex/beta-1.37-6/sources/1.36.0/reg/debug-helper/0.3.5/Cargo.toml
[INFO] started frobbing debug-helper-0.3.5
[INFO] finished frobbing debug-helper-0.3.5
[INFO] frobbed toml for debug-helper-0.3.5 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/debug-helper/0.3.5/Cargo.toml
[INFO] crate debug-helper-0.3.5 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing debug-helper-0.3.5 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/debug-helper/0.3.5:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 76080808e975a31167dc77af42df0c7d07c01e0946f291c5635961c9286a12b0
[INFO] running `"docker" "start" "-a" "76080808e975a31167dc77af42df0c7d07c01e0946f291c5635961c9286a12b0"`
[INFO] [stderr]    Compiling debug-helper v0.3.5 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "76080808e975a31167dc77af42df0c7d07c01e0946f291c5635961c9286a12b0"`
[INFO] running `"docker" "rm" "-f" "76080808e975a31167dc77af42df0c7d07c01e0946f291c5635961c9286a12b0"`
[INFO] [stdout] 76080808e975a31167dc77af42df0c7d07c01e0946f291c5635961c9286a12b0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/debug-helper/0.3.5:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] c99af41380f8613610f8c05a7be0f9eaec849ec9fed8a066f0930e5a9b41ec4d
[INFO] running `"docker" "start" "-a" "c99af41380f8613610f8c05a7be0f9eaec849ec9fed8a066f0930e5a9b41ec4d"`
[INFO] [stderr]    Compiling debug-helper v0.3.5 (/opt/crater/workdir)
[INFO] [stderr] error: enum variants on type aliases are experimental
[INFO] [stderr]   --> examples/enum.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         impl_debug_for_enum!(A::{V1, (V2(f1, _, f3): (.f1, (.f3, "{:.3}", f3))), {V3{f1, f2: _, f3}: (.f1, (.f3, "{:.3}", f3))}}, f, self);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error 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: enum variants on type aliases are experimental
[INFO] [stderr]   --> examples/enum.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         impl_debug_for_enum!(A::{V1, (V2(f1, _, f3): (.f1, (.f3, "{:.3}", f3))), {V3{f1, f2: _, f3}: (.f1, (.f3, "{:.3}", f3))}}, f, self);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error 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: enum variants on type aliases are experimental
[INFO] [stderr]   --> examples/enum.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |         impl_debug_for_enum!(A::{V1, (V2(f1, _, f3): (.f1, (.f3, "{:.3}", f3))), {V3{f1, f2: _, f3}: (.f1, (.f3, "{:.3}", f3))}}, f, self);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this error 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 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `debug-helper`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "c99af41380f8613610f8c05a7be0f9eaec849ec9fed8a066f0930e5a9b41ec4d"`
[INFO] running `"docker" "rm" "-f" "c99af41380f8613610f8c05a7be0f9eaec849ec9fed8a066f0930e5a9b41ec4d"`
[INFO] [stdout] c99af41380f8613610f8c05a7be0f9eaec849ec9fed8a066f0930e5a9b41ec4d