[INFO] crate umux 1.0.0 is already in cache
[INFO] extracting crate umux 1.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/umux/1.0.0
[INFO] extracting crate umux 1.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/umux/1.0.0
[INFO] validating manifest of umux-1.0.0 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 umux-1.0.0 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 umux-1.0.0
[INFO] finished frobbing umux-1.0.0
[INFO] frobbed toml for umux-1.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/umux/1.0.0/Cargo.toml
[INFO] started frobbing umux-1.0.0
[INFO] finished frobbing umux-1.0.0
[INFO] frobbed toml for umux-1.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/umux/1.0.0/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 umux-1.0.0 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-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/umux/1.0.0:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] b088a0aa49b44d2f81ed84f5ced0a6f9fd41fc1c9fdf9f1b2e181905ece020ba
[INFO] running `"docker" "start" "-a" "b088a0aa49b44d2f81ed84f5ced0a6f9fd41fc1c9fdf9f1b2e181905ece020ba"`
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]    Compiling semver v0.2.3
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]    Compiling error-chain v0.5.0
[INFO] [stderr]    Compiling clippy_lints v0.0.95
[INFO] [stderr] error[E0463]: can't find crate for `collections`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/clippy_lints-0.0.95/src/lib.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | extern crate collections;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[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 `clippy_lints`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "b088a0aa49b44d2f81ed84f5ced0a6f9fd41fc1c9fdf9f1b2e181905ece020ba"`
[INFO] running `"docker" "rm" "-f" "b088a0aa49b44d2f81ed84f5ced0a6f9fd41fc1c9fdf9f1b2e181905ece020ba"`
[INFO] [stdout] b088a0aa49b44d2f81ed84f5ced0a6f9fd41fc1c9fdf9f1b2e181905ece020ba