[INFO] updating cached repository ppedrot/kravanenn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ppedrot/kravanenn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ppedrot/kravanenn" "work/ex/beta-1.38-1/sources/1.37.0/gh/ppedrot/kravanenn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/ppedrot/kravanenn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ppedrot/kravanenn" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ppedrot/kravanenn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ppedrot/kravanenn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 61f089e2091d1f0c4eb57b2617532e7bee63508d
[INFO] sha for GitHub repo ppedrot/kravanenn: 61f089e2091d1f0c4eb57b2617532e7bee63508d
[INFO] validating manifest of ppedrot/kravanenn 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 ppedrot/kravanenn 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 ppedrot/kravanenn
[INFO] finished frobbing ppedrot/kravanenn
[INFO] frobbed toml for ppedrot/kravanenn written to work/ex/beta-1.38-1/sources/1.37.0/gh/ppedrot/kravanenn/Cargo.toml
[INFO] started frobbing ppedrot/kravanenn
[INFO] finished frobbing ppedrot/kravanenn
[INFO] frobbed toml for ppedrot/kravanenn written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/ppedrot/kravanenn/Cargo.toml
[INFO] crate ppedrot/kravanenn 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 ppedrot/kravanenn 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-2/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/ppedrot/kravanenn:/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] 794acf9cd5182d04af059e9cb4bb3e9b9c6f883e307a3b72dee0c9e548e3e44f
[INFO] running `"docker" "start" "-a" "794acf9cd5182d04af059e9cb4bb3e9b9c6f883e307a3b72dee0c9e548e3e44f"`
[INFO] [stderr]    Compiling crossbeam v0.3.0
[INFO] [stderr]    Compiling light_arena v0.1.1
[INFO] [stderr]    Compiling movecell v0.2.0
[INFO] [stderr]    Compiling take_mut v0.2.0
[INFO] [stderr]    Compiling fixedbitset v0.1.8
[INFO] [stderr]    Compiling smallvec v0.5.0
[INFO] [stderr]    Compiling lazy-init v0.2.0
[INFO] [stderr]    Compiling typed-arena v1.3.0
[INFO] [stderr] error[E0432]: unresolved imports `std::ops::Placer`, `std::ops::Place`, `std::ops::InPlace`
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/light_arena-0.1.1/src/lib.rs:80:16
[INFO] [stderr]    |
[INFO] [stderr] 80 | use std::ops::{Placer, Place, InPlace};
[INFO] [stderr]    |                ^^^^^^  ^^^^^  ^^^^^^^ no `InPlace` in `ops`
[INFO] [stderr]    |                |       |
[INFO] [stderr]    |                |       no `Place` in `ops`
[INFO] [stderr]    |                no `Placer` in `ops`
[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/light_arena-0.1.1/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(placement_in_syntax, placement_new_protocol)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: Could not compile `light_arena`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "794acf9cd5182d04af059e9cb4bb3e9b9c6f883e307a3b72dee0c9e548e3e44f"`
[INFO] running `"docker" "rm" "-f" "794acf9cd5182d04af059e9cb4bb3e9b9c6f883e307a3b72dee0c9e548e3e44f"`
[INFO] [stdout] 794acf9cd5182d04af059e9cb4bb3e9b9c6f883e307a3b72dee0c9e548e3e44f