[INFO] crate rtdlib 1.4.0 is already in cache
[INFO] testing rtdlib-1.4.0 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate rtdlib 1.4.0 into work/builds/worker-0/source
[INFO] validating manifest of crates.io crate rtdlib 1.4.0 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rtdlib 1.4.0
[INFO] finished tweaking crates.io crate rtdlib 1.4.0
[INFO] tweaked toml for crates.io crate rtdlib 1.4.0 written to work/builds/worker-0/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] f52cb9b6aedd2a2f4095ffd27e20d02426a92b7059ef76666a68028807647439
[INFO] running `"docker" "start" "-a" "f52cb9b6aedd2a2f4095ffd27e20d02426a92b7059ef76666a68028807647439"`
[INFO] [stderr]    Compiling rtdlib v1.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/errors.rs:36:30
[INFO] [stderr]    |
[INFO] [stderr] 36 |   fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `rtdlib`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --edition=2018 --crate-name rtdlib src/lib.rs --color never --crate-type lib --emit=dep-info,metadata,link -C debuginfo=2 -C metadata=b5197915d98af370 -C extra-filename=-b5197915d98af370 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-9f7a5de25bd5699b.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-99bda1236d933191.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-bd54226c59a291eb.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-d23617778eb43382.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "f52cb9b6aedd2a2f4095ffd27e20d02426a92b7059ef76666a68028807647439"`
[INFO] running `"docker" "rm" "-f" "f52cb9b6aedd2a2f4095ffd27e20d02426a92b7059ef76666a68028807647439"`
[INFO] [stdout] f52cb9b6aedd2a2f4095ffd27e20d02426a92b7059ef76666a68028807647439