[INFO] crate enum-utils 0.1.1 is already in cache
[INFO] extracting crate enum-utils 0.1.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/enum-utils/0.1.1
[INFO] extracting crate enum-utils 0.1.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/enum-utils/0.1.1
[INFO] validating manifest of enum-utils-0.1.1 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 enum-utils-0.1.1 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 enum-utils-0.1.1
[INFO] finished frobbing enum-utils-0.1.1
[INFO] frobbed toml for enum-utils-0.1.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/enum-utils/0.1.1/Cargo.toml
[INFO] started frobbing enum-utils-0.1.1
[INFO] finished frobbing enum-utils-0.1.1
[INFO] frobbed toml for enum-utils-0.1.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/enum-utils/0.1.1/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 enum-utils-0.1.1 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/enum-utils/0.1.1:/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] 34e11aec48a348ab2376c8bf08623293df82f74e192e3aa639835802e9a9d831
[INFO] running `"docker" "start" "-a" "34e11aec48a348ab2376c8bf08623293df82f74e192e3aa639835802e9a9d831"`
[INFO] [stderr]    Compiling enum-utils-from-str v0.1.0
[INFO] [stderr]    Compiling serde_derive_internals v0.24.1
[INFO] [stderr]    Compiling enum-utils v0.1.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.45s
[INFO] running `"docker" "inspect" "34e11aec48a348ab2376c8bf08623293df82f74e192e3aa639835802e9a9d831"`
[INFO] running `"docker" "rm" "-f" "34e11aec48a348ab2376c8bf08623293df82f74e192e3aa639835802e9a9d831"`
[INFO] [stdout] 34e11aec48a348ab2376c8bf08623293df82f74e192e3aa639835802e9a9d831
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/enum-utils/0.1.1:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 93143160477c9039a8d3dbf9c6c69dadcc323269a220687e989f1fab1fe595a7
[INFO] running `"docker" "start" "-a" "93143160477c9039a8d3dbf9c6c69dadcc323269a220687e989f1fab1fe595a7"`
[INFO] [stderr]    Compiling enum-utils v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> tests/iter.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(repr_align_enum)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning[E0566]: conflicting representation hints
[INFO] [stderr]   --> tests/iter.rs:59:8
[INFO] [stderr]    |
[INFO] [stderr] 59 | #[repr(C, u16)]
[INFO] [stderr]    |        ^  ^^^
[INFO] [stderr] 60 | #[repr(align(2))]
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `enum-utils`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "93143160477c9039a8d3dbf9c6c69dadcc323269a220687e989f1fab1fe595a7"`
[INFO] running `"docker" "rm" "-f" "93143160477c9039a8d3dbf9c6c69dadcc323269a220687e989f1fab1fe595a7"`
[INFO] [stdout] 93143160477c9039a8d3dbf9c6c69dadcc323269a220687e989f1fab1fe595a7