[INFO] crate zerocopy-derive 0.1.3 is already in cache
[INFO] extracting crate zerocopy-derive 0.1.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/zerocopy-derive/0.1.3
[INFO] extracting crate zerocopy-derive 0.1.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/zerocopy-derive/0.1.3
[INFO] validating manifest of zerocopy-derive-0.1.3 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 zerocopy-derive-0.1.3 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 zerocopy-derive-0.1.3
[INFO] finished frobbing zerocopy-derive-0.1.3
[INFO] frobbed toml for zerocopy-derive-0.1.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/zerocopy-derive/0.1.3/Cargo.toml
[INFO] started frobbing zerocopy-derive-0.1.3
[INFO] finished frobbing zerocopy-derive-0.1.3
[INFO] frobbed toml for zerocopy-derive-0.1.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/zerocopy-derive/0.1.3/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 zerocopy-derive-0.1.3 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/zerocopy-derive/0.1.3:/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] f6153596ecb47a3eb77a03b1c9db8dff2a96061cbe950db0f593a341c20fa820
[INFO] running `"docker" "start" "-a" "f6153596ecb47a3eb77a03b1c9db8dff2a96061cbe950db0f593a341c20fa820"`
[INFO] [stderr]    Compiling zerocopy-derive v0.1.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.02s
[INFO] running `"docker" "inspect" "f6153596ecb47a3eb77a03b1c9db8dff2a96061cbe950db0f593a341c20fa820"`
[INFO] running `"docker" "rm" "-f" "f6153596ecb47a3eb77a03b1c9db8dff2a96061cbe950db0f593a341c20fa820"`
[INFO] [stdout] f6153596ecb47a3eb77a03b1c9db8dff2a96061cbe950db0f593a341c20fa820
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/zerocopy-derive/0.1.3:/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] 0cadce3cfa1076fad5b0d4641fc4023f26f9131c5a67242e13a7d7f7e7cc72d1
[INFO] running `"docker" "start" "-a" "0cadce3cfa1076fad5b0d4641fc4023f26f9131c5a67242e13a7d7f7e7cc72d1"`
[INFO] [stderr]    Compiling compiletest_rs v0.3.22
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling filetime v0.2.7
[INFO] [stderr]    Compiling zerocopy-derive v0.1.4
[INFO] [stderr]    Compiling rustfix v0.4.6
[INFO] [stderr]    Compiling zerocopy v0.2.8
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable 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 stable 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] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "0cadce3cfa1076fad5b0d4641fc4023f26f9131c5a67242e13a7d7f7e7cc72d1"`
[INFO] running `"docker" "rm" "-f" "0cadce3cfa1076fad5b0d4641fc4023f26f9131c5a67242e13a7d7f7e7cc72d1"`
[INFO] [stdout] 0cadce3cfa1076fad5b0d4641fc4023f26f9131c5a67242e13a7d7f7e7cc72d1