[INFO] fetching crate rtdlib 0.6.3...
[INFO] checking rtdlib-0.6.3 against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] extracting crate rtdlib 0.6.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate rtdlib 0.6.3 on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rtdlib 0.6.3
[INFO] finished tweaking crates.io crate rtdlib 0.6.3
[INFO] tweaked toml for crates.io crate rtdlib 0.6.3 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7ec6460fcac8ce3791beabba181f14297ebbb3c3b872343bf47360c1db1cf49
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f7ec6460fcac8ce3791beabba181f14297ebbb3c3b872343bf47360c1db1cf49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7ec6460fcac8ce3791beabba181f14297ebbb3c3b872343bf47360c1db1cf49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7ec6460fcac8ce3791beabba181f14297ebbb3c3b872343bf47360c1db1cf49", kill_on_drop: false }`
[INFO] [stdout] f7ec6460fcac8ce3791beabba181f14297ebbb3c3b872343bf47360c1db1cf49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c964f0de3e213c8daa6b72ee58815c84e5cd1e4a17671a5f70cc7ca7ce21a3d9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c964f0de3e213c8daa6b72ee58815c84e5cd1e4a17671a5f70cc7ca7ce21a3d9", kill_on_drop: false }`
[INFO] [stderr]     Checking serde-aux v0.6.1
[INFO] [stderr]     Checking rtdlib v0.6.3 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `rtdlib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name rtdlib --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' -C metadata=cec8f745a8cc4485 -C extra-filename=-cec8f745a8cc4485 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-3ef28a721f646438.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-8ef8509ef6dbe841.rmeta --extern serde_aux=/opt/rustwide/target/debug/deps/libserde_aux-1b3353c51f97d4c1.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-e7222b3471f52a7d.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-14b65202ac6706bd.rmeta --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:30:36
[INFO] [stdout]    |
[INFO] [stdout] 30 |       RTDError::Io(ref err) => err.description(),
[INFO] [stdout]    |                                    ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:31:43
[INFO] [stdout]    |
[INFO] [stdout] 31 |       RTDError::SerdeJson(ref err) => err.description(),
[INFO] [stdout]    |                                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c964f0de3e213c8daa6b72ee58815c84e5cd1e4a17671a5f70cc7ca7ce21a3d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c964f0de3e213c8daa6b72ee58815c84e5cd1e4a17671a5f70cc7ca7ce21a3d9", kill_on_drop: false }`
[INFO] [stdout] c964f0de3e213c8daa6b72ee58815c84e5cd1e4a17671a5f70cc7ca7ce21a3d9