[INFO] updating cached repository https://github.com/kdy1/stackoverflow-56728860
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d62317ad0185ef789216ea871c78016ff9649be1
[INFO] testing kdy1/stackoverflow-56728860 against beta-2020-06-03 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkdy1%2Fstackoverflow-56728860" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kdy1/stackoverflow-56728860 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kdy1/stackoverflow-56728860
[INFO] finished tweaking git repo https://github.com/kdy1/stackoverflow-56728860
[INFO] tweaked toml for git repo https://github.com/kdy1/stackoverflow-56728860 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/kdy1/stackoverflow-56728860 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stdout] e1603a26b2e514e90c20d3ce0a936fe3003252336eed8529bd0b7e7c411fffbb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e1603a26b2e514e90c20d3ce0a936fe3003252336eed8529bd0b7e7c411fffbb"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling parking_lot v0.4.8
[INFO] [stderr]    Compiling chashmap v2.2.2
[INFO] [stderr]    Compiling stackoverflow-56728860 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0515]: cannot return value referencing local variable `lib`
[INFO] [stderr]   --> src/main.rs:32:16
[INFO] [stderr]    |
[INFO] [stderr] 31 |     if let Some(ty) = lib.types.get(name) {
[INFO] [stderr]    |                       --- `lib` is borrowed here
[INFO] [stderr] 32 |         return Some(&*ty);
[INFO] [stderr]    |                ^^^^^^^^^^ returns a value referencing data owned by the current function
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0515`.
[INFO] [stderr] error: could not compile `stackoverflow-56728860`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e1603a26b2e514e90c20d3ce0a936fe3003252336eed8529bd0b7e7c411fffbb"`
[INFO] running `"docker" "rm" "-f" "e1603a26b2e514e90c20d3ce0a936fe3003252336eed8529bd0b7e7c411fffbb"`
[INFO] [stdout] e1603a26b2e514e90c20d3ce0a936fe3003252336eed8529bd0b7e7c411fffbb