[INFO] crate lockchain-core 0.9.0 is already in cache
[INFO] extracting crate lockchain-core 0.9.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/lockchain-core/0.9.0
[INFO] extracting crate lockchain-core 0.9.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/lockchain-core/0.9.0
[INFO] validating manifest of lockchain-core-0.9.0 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 lockchain-core-0.9.0 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 lockchain-core-0.9.0
[INFO] finished frobbing lockchain-core-0.9.0
[INFO] frobbed toml for lockchain-core-0.9.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/lockchain-core/0.9.0/Cargo.toml
[INFO] started frobbing lockchain-core-0.9.0
[INFO] finished frobbing lockchain-core-0.9.0
[INFO] frobbed toml for lockchain-core-0.9.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/lockchain-core/0.9.0/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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing lockchain-core-0.9.0 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-3/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/lockchain-core/0.9.0:/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] 12f59920000332e5df9efff6f5b9f8da458734ffeb6931fd38a72c6d0ed242b8
[INFO] running `"docker" "start" "-a" "12f59920000332e5df9efff6f5b9f8da458734ffeb6931fd38a72c6d0ed242b8"`
[INFO] [stderr]    Compiling pam-sys v0.5.6
[INFO] [stderr]    Compiling users v0.5.3
[INFO] [stderr]    Compiling block-cipher-trait v0.6.2
[INFO] [stderr]    Compiling keybob v0.3.1
[INFO] [stderr]    Compiling blowfish v0.4.0
[INFO] [stderr]    Compiling bcrypt v0.2.2
[INFO] [stderr]    Compiling pam-auth v0.5.5
[INFO] [stderr]    Compiling lockchain-core v0.9.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(external_doc)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/users/auth.rs:51:33
[INFO] [stderr]    |
[INFO] [stderr] 51 |             println!("{:#?}", e.cause());
[INFO] [stderr]    |                                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/users/auth.rs:60:33
[INFO] [stderr]    |
[INFO] [stderr] 60 |             println!("{:#?}", e.cause());
[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 `lockchain-core`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "12f59920000332e5df9efff6f5b9f8da458734ffeb6931fd38a72c6d0ed242b8"`
[INFO] running `"docker" "rm" "-f" "12f59920000332e5df9efff6f5b9f8da458734ffeb6931fd38a72c6d0ed242b8"`
[INFO] [stdout] 12f59920000332e5df9efff6f5b9f8da458734ffeb6931fd38a72c6d0ed242b8