[INFO] crate rtdlib 1.5.0 is already in cache
[INFO] checking rtdlib-1.5.0 against master#2da942f32802c8233a09744024dfbc34431adf65 for pr-66963
[INFO] extracting crate rtdlib 1.5.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate rtdlib 1.5.0 on toolchain 2da942f32802c8233a09744024dfbc34431adf65
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rtdlib 1.5.0
[INFO] finished tweaking crates.io crate rtdlib 1.5.0
[INFO] tweaked toml for crates.io crate rtdlib 1.5.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2da942f32802c8233a09744024dfbc34431adf65" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+2da942f32802c8233a09744024dfbc34431adf65" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a2d031b9425365af133307d0e574b85d15f3f47d48a4328bf3af0763d6a8e8f4
[INFO] running `"docker" "start" "-a" "a2d031b9425365af133307d0e574b85d15f3f47d48a4328bf3af0763d6a8e8f4"`
[INFO] [stderr]     Checking rtdlib v1.5.0 (/opt/rustwide/workdir)
[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 --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,metadata -C debuginfo=2 --test -C metadata=364544a403a813bc -C extra-filename=-364544a403a813bc --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-fc3a9123d42de64d.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-646daf659ccbc7d2.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-a9ca215f14f8b74d.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-8ef36be5f7299766.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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: build failed
[INFO] running `"docker" "inspect" "a2d031b9425365af133307d0e574b85d15f3f47d48a4328bf3af0763d6a8e8f4"`
[INFO] running `"docker" "rm" "-f" "a2d031b9425365af133307d0e574b85d15f3f47d48a4328bf3af0763d6a8e8f4"`
[INFO] [stdout] a2d031b9425365af133307d0e574b85d15f3f47d48a4328bf3af0763d6a8e8f4