[INFO] crate indexing 0.3.2 is already in cache
[INFO] extracting crate indexing 0.3.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/indexing/0.3.2
[INFO] extracting crate indexing 0.3.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/indexing/0.3.2
[INFO] validating manifest of indexing-0.3.2 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 indexing-0.3.2 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 indexing-0.3.2
[INFO] finished frobbing indexing-0.3.2
[INFO] frobbed toml for indexing-0.3.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/indexing/0.3.2/Cargo.toml
[INFO] started frobbing indexing-0.3.2
[INFO] finished frobbing indexing-0.3.2
[INFO] frobbed toml for indexing-0.3.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/indexing/0.3.2/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 indexing-0.3.2 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/indexing/0.3.2:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 0ecd1ee42bc0fb0d5c34603d8d2a1348a48de56fa29a458ab901ea8517b99a86
[INFO] running `"docker" "start" "-a" "0ecd1ee42bc0fb0d5c34603d8d2a1348a48de56fa29a458ab901ea8517b99a86"`
[INFO] [stderr]    Compiling indexing v0.3.2 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]    --> src/lib.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     id: Id<'id>,
[INFO] [stderr]     |     ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `"docker" "inspect" "0ecd1ee42bc0fb0d5c34603d8d2a1348a48de56fa29a458ab901ea8517b99a86"`
[INFO] running `"docker" "rm" "-f" "0ecd1ee42bc0fb0d5c34603d8d2a1348a48de56fa29a458ab901ea8517b99a86"`
[INFO] [stdout] 0ecd1ee42bc0fb0d5c34603d8d2a1348a48de56fa29a458ab901ea8517b99a86
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/indexing/0.3.2:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] d3e3248193bc10d0f4645334f0ea598bf29f2a7dd63f461b3ffd32d07d9eadb5
[INFO] running `"docker" "start" "-a" "d3e3248193bc10d0f4645334f0ea598bf29f2a7dd63f461b3ffd32d07d9eadb5"`
[INFO] [stderr]    Compiling compiletest_rs v0.3.22
[INFO] [stderr]    Compiling quickcheck v0.5.0
[INFO] [stderr]    Compiling rustfix v0.4.5
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/compiletest_rs-0.3.22/src/lib.rs:13:39
[INFO] [stderr]    |
[INFO] [stderr] 13 | #![cfg_attr(not(feature = "norustc"), feature(rustc_private))]
[INFO] [stderr]    |                                       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/compiletest_rs-0.3.22/src/lib.rs:14:38
[INFO] [stderr]    |
[INFO] [stderr] 14 | #![cfg_attr(not(feature = "stable"), feature(test))]
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `compiletest_rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d3e3248193bc10d0f4645334f0ea598bf29f2a7dd63f461b3ffd32d07d9eadb5"`
[INFO] running `"docker" "rm" "-f" "d3e3248193bc10d0f4645334f0ea598bf29f2a7dd63f461b3ffd32d07d9eadb5"`
[INFO] [stdout] d3e3248193bc10d0f4645334f0ea598bf29f2a7dd63f461b3ffd32d07d9eadb5