[INFO] crate j4rs 0.10.0 is already in cache
[INFO] checking j4rs-0.10.0 against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66852
[INFO] extracting crate j4rs 0.10.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate j4rs 0.10.0 on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate j4rs 0.10.0
[INFO] finished tweaking crates.io crate j4rs 0.10.0
[INFO] tweaked toml for crates.io crate j4rs 0.10.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "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] 4d91c96cf6c1eecb054094099d6d12159f126ccb0806bb25ac50749d21393e51
[INFO] running `"docker" "start" "-a" "4d91c96cf6c1eecb054094099d6d12159f126ccb0806bb25ac50749d21393e51"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking jni-sys v0.3.0
[INFO] [stderr]    Compiling java-locator v0.1.1
[INFO] [stderr]     Checking criterion v0.2.11
[INFO] [stderr]    Compiling j4rs v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/errors.rs:104:46
[INFO] [stderr]     |
[INFO] [stderr] 104 |         J4RsError::RustError(format!("{:?}", err))
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr]     |                                              |
[INFO] [stderr]     |                                              unreachable expression
[INFO] [stderr]     |                                              any code following this expression is unreachable
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]    --> src/errors.rs:104:46
[INFO] [stderr]     |
[INFO] [stderr] 104 |         J4RsError::RustError(format!("{:?}", err))
[INFO] [stderr]     |                                              ^^^
[INFO] [stderr]     |                                              |
[INFO] [stderr]     |                                              unreachable expression
[INFO] [stderr]     |                                              any code following this expression is unreachable
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.20s
[INFO] running `"docker" "inspect" "4d91c96cf6c1eecb054094099d6d12159f126ccb0806bb25ac50749d21393e51"`
[INFO] running `"docker" "rm" "-f" "4d91c96cf6c1eecb054094099d6d12159f126ccb0806bb25ac50749d21393e51"`
[INFO] [stdout] 4d91c96cf6c1eecb054094099d6d12159f126ccb0806bb25ac50749d21393e51