[INFO] fetching crate fuzzcheck_mutators 0.2.1...
[INFO] checking fuzzcheck_mutators-0.2.1 against master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] extracting crate fuzzcheck_mutators 0.2.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate fuzzcheck_mutators 0.2.1 on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fuzzcheck_mutators 0.2.1
[INFO] finished tweaking crates.io crate fuzzcheck_mutators 0.2.1
[INFO] tweaked toml for crates.io crate fuzzcheck_mutators 0.2.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate fuzzcheck_mutators 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "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" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "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] 1d368c09656f89923a99165ccd1711db703d3fd3255dcf999e775df612d67c77
[INFO] running `"docker" "start" "-a" "1d368c09656f89923a99165ccd1711db703d3fd3255dcf999e775df612d67c77"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking fuzzcheck_arg_parser v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking fuzzcheck v0.2.1
[INFO] [stderr]     Checking fuzzcheck_mutators v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0463]: can't find crate for `fuzzcheck_input`
[INFO] [stderr]  --> benches/vector.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | extern crate fuzzcheck_input;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `fuzzcheck_mutators`.
[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] error: build failed
[INFO] running `"docker" "inspect" "1d368c09656f89923a99165ccd1711db703d3fd3255dcf999e775df612d67c77"`
[INFO] running `"docker" "rm" "-f" "1d368c09656f89923a99165ccd1711db703d3fd3255dcf999e775df612d67c77"`
[INFO] [stdout] 1d368c09656f89923a99165ccd1711db703d3fd3255dcf999e775df612d67c77