[INFO] fetching crate validator_derive 0.9.0...
[INFO] extracting crate validator_derive 0.9.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/validator_derive/0.9.0
[INFO] extracting crate validator_derive 0.9.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/validator_derive/0.9.0
[INFO] validating manifest of validator_derive-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 validator_derive-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 validator_derive-0.9.0
[INFO] finished frobbing validator_derive-0.9.0
[INFO] frobbed toml for validator_derive-0.9.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/validator_derive/0.9.0/Cargo.toml
[INFO] started frobbing validator_derive-0.9.0
[INFO] finished frobbing validator_derive-0.9.0
[INFO] frobbed toml for validator_derive-0.9.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/validator_derive/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] [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" "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 validator_derive-0.9.0 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-0/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/validator_derive/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] c1d20604f974b135646895a077fe4282a1c154b402759be47cf182fe4fee40af
[INFO] running `"docker" "start" "-a" "c1d20604f974b135646895a077fe4282a1c154b402759be47cf182fe4fee40af"`
[INFO] [stderr]    Compiling if_chain v1.0.0
[INFO] [stderr]    Compiling validator v0.9.0
[INFO] [stderr]    Compiling validator_derive v0.9.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.29s
[INFO] running `"docker" "inspect" "c1d20604f974b135646895a077fe4282a1c154b402759be47cf182fe4fee40af"`
[INFO] running `"docker" "rm" "-f" "c1d20604f974b135646895a077fe4282a1c154b402759be47cf182fe4fee40af"`
[INFO] [stdout] c1d20604f974b135646895a077fe4282a1c154b402759be47cf182fe4fee40af
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/validator_derive/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1d93783cd039945087b60c7c0738f7dc4574b322442e1de4e8b9aa65a7a72093
[INFO] running `"docker" "start" "-a" "1d93783cd039945087b60c7c0738f7dc4574b322442e1de4e8b9aa65a7a72093"`
[INFO] [stderr]    Compiling compiletest_rs v0.3.22
[INFO] [stderr]    Compiling filetime v0.2.6
[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" "1d93783cd039945087b60c7c0738f7dc4574b322442e1de4e8b9aa65a7a72093"`
[INFO] running `"docker" "rm" "-f" "1d93783cd039945087b60c7c0738f7dc4574b322442e1de4e8b9aa65a7a72093"`
[INFO] [stdout] 1d93783cd039945087b60c7c0738f7dc4574b322442e1de4e8b9aa65a7a72093