[INFO] crate yulid 0.1.0 is already in cache
[INFO] extracting crate yulid 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/yulid/0.1.0
[INFO] extracting crate yulid 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/yulid/0.1.0
[INFO] validating manifest of yulid-0.1.0 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 yulid-0.1.0 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 yulid-0.1.0
[INFO] finished frobbing yulid-0.1.0
[INFO] frobbed toml for yulid-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/yulid/0.1.0/Cargo.toml
[INFO] started frobbing yulid-0.1.0
[INFO] finished frobbing yulid-0.1.0
[INFO] frobbed toml for yulid-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/yulid/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] testing yulid-0.1.0 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-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/yulid/0.1.0:/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] 18809de058ed61bca68ae5fac1bce0efc88806d2fbeb4fd7303265a158e7092a
[INFO] running `"docker" "start" "-a" "18809de058ed61bca68ae5fac1bce0efc88806d2fbeb4fd7303265a158e7092a"`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling yulid v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.30s
[INFO] running `"docker" "inspect" "18809de058ed61bca68ae5fac1bce0efc88806d2fbeb4fd7303265a158e7092a"`
[INFO] running `"docker" "rm" "-f" "18809de058ed61bca68ae5fac1bce0efc88806d2fbeb4fd7303265a158e7092a"`
[INFO] [stdout] 18809de058ed61bca68ae5fac1bce0efc88806d2fbeb4fd7303265a158e7092a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-1/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/yulid/0.1.0:/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] 3d032912ed7c9fde25bf70d45fdd8ecd7e7a9542a1601d6fa828568c9c357e72
[INFO] running `"docker" "start" "-a" "3d032912ed7c9fde25bf70d45fdd8ecd7e7a9542a1601d6fa828568c9c357e72"`
[INFO] [stderr]    Compiling half v1.3.0
[INFO] [stderr]    Compiling serde_cbor v0.9.0
[INFO] [stderr]    Compiling yulid v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:14:19
[INFO] [stderr]    |
[INFO] [stderr] 14 | #![cfg_attr(test, feature(test))]
[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 `yulid`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3d032912ed7c9fde25bf70d45fdd8ecd7e7a9542a1601d6fa828568c9c357e72"`
[INFO] running `"docker" "rm" "-f" "3d032912ed7c9fde25bf70d45fdd8ecd7e7a9542a1601d6fa828568c9c357e72"`
[INFO] [stdout] 3d032912ed7c9fde25bf70d45fdd8ecd7e7a9542a1601d6fa828568c9c357e72