[INFO] updating cached repository quininer/enc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/quininer/enc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/quininer/enc" "work/ex/beta-1.38-1/sources/1.37.0/gh/quininer/enc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/quininer/enc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/quininer/enc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quininer/enc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quininer/enc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7b1bd8ab8655bb65d0d81a30d54982a9b8b80abe
[INFO] sha for GitHub repo quininer/enc: 7b1bd8ab8655bb65d0d81a30d54982a9b8b80abe
[INFO] validating manifest of quininer/enc 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 quininer/enc 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 quininer/enc
[INFO] finished frobbing quininer/enc
[INFO] frobbed toml for quininer/enc written to work/ex/beta-1.38-1/sources/1.37.0/gh/quininer/enc/Cargo.toml
[INFO] started frobbing quininer/enc
[INFO] finished frobbing quininer/enc
[INFO] frobbed toml for quininer/enc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quininer/enc/Cargo.toml
[INFO] crate quininer/enc already has a lockfile, it will not be regenerated
[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 quininer/enc against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/quininer/enc:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 293879a32dd1f5b516921de5dadd097012c9c6c0b8b28857a4a69e52efb9510f
[INFO] running `"docker" "start" "-a" "293879a32dd1f5b516921de5dadd097012c9c6c0b8b28857a4a69e52efb9510f"`
[INFO] [stderr]    Compiling constant_time_eq v0.1.2
[INFO] [stderr]    Compiling tiny-keccak v1.1.1
[INFO] [stderr]    Compiling unicode-width v0.1.3
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling term_size v0.2.1
[INFO] [stderr]    Compiling bitpack v0.1.0
[INFO] [stderr]    Compiling hc256 v0.1.4
[INFO] [stderr]    Compiling ascon v0.1.3
[INFO] [stderr]    Compiling blake2-rfc v0.2.17
[INFO] [stderr] error[E0463]: can't find crate for `collections`
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/ascon-0.1.3/src/lib.rs:4:14
[INFO] [stderr]   |
[INFO] [stderr] 4 | #[macro_use] extern crate collections;
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr]    Compiling clap v2.19.2
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `ascon`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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/blake2-rfc-0.2.17/src/lib.rs:17:31
[INFO] [stderr]    |
[INFO] [stderr] 17 | #![cfg_attr(feature = "simd", feature(platform_intrinsics, repr_simd))]
[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/blake2-rfc-0.2.17/src/lib.rs:18:35
[INFO] [stderr]    |
[INFO] [stderr] 18 | #![cfg_attr(feature = "simd_opt", feature(cfg_target_feature))]
[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/blake2-rfc-0.2.17/src/lib.rs:19:35
[INFO] [stderr]    |
[INFO] [stderr] 19 | #![cfg_attr(feature = "simd_asm", feature(asm))]
[INFO] [stderr]    |                                   ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `blake2-rfc`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "293879a32dd1f5b516921de5dadd097012c9c6c0b8b28857a4a69e52efb9510f"`
[INFO] running `"docker" "rm" "-f" "293879a32dd1f5b516921de5dadd097012c9c6c0b8b28857a4a69e52efb9510f"`
[INFO] [stdout] 293879a32dd1f5b516921de5dadd097012c9c6c0b8b28857a4a69e52efb9510f