[INFO] crate protobuf 2.14.0 is already in cache
[INFO] checking protobuf-2.14.0 against master#783139bd8fc3b94fac9a1bf81bba2c506e8221b6 for pr-72644
[INFO] extracting crate protobuf 2.14.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate protobuf 2.14.0 on toolchain 783139bd8fc3b94fac9a1bf81bba2c506e8221b6
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate protobuf 2.14.0
[INFO] finished tweaking crates.io crate protobuf 2.14.0
[INFO] tweaked toml for crates.io crate protobuf 2.14.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+783139bd8fc3b94fac9a1bf81bba2c506e8221b6" "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] 93fa0e1aaeba6fdce8ade31fca5ca5dd1ecf1a5f5af551633b0ea129bbe14a9d
[INFO] running `"docker" "start" "-a" "93fa0e1aaeba6fdce8ade31fca5ca5dd1ecf1a5f5af551633b0ea129bbe14a9d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling protobuf v2.14.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: couldn't read src/../../protobuf-test-common/src/hex.rs: No such file or directory (os error 2)
[INFO] [stderr]   --> src/lib.rs:72:1
[INFO] [stderr]    |
[INFO] [stderr] 72 | mod hex;
[INFO] [stderr]    | ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `protobuf`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/stream.rs:812:9
[INFO] [stderr]     |
[INFO] [stderr] 812 |         mem::replace(target, s);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "93fa0e1aaeba6fdce8ade31fca5ca5dd1ecf1a5f5af551633b0ea129bbe14a9d"`
[INFO] running `"docker" "rm" "-f" "93fa0e1aaeba6fdce8ade31fca5ca5dd1ecf1a5f5af551633b0ea129bbe14a9d"`
[INFO] [stdout] 93fa0e1aaeba6fdce8ade31fca5ca5dd1ecf1a5f5af551633b0ea129bbe14a9d