[INFO] crate null-terminated 0.3.14 is already in cache
[INFO] checking null-terminated-0.3.14 against try#96b3c169cd2d8959926fa240f10342f1659f8ae3 for pr-71896
[INFO] extracting crate null-terminated 0.3.14 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate null-terminated 0.3.14 on toolchain 96b3c169cd2d8959926fa240f10342f1659f8ae3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+96b3c169cd2d8959926fa240f10342f1659f8ae3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate null-terminated 0.3.14
[INFO] finished tweaking crates.io crate null-terminated 0.3.14
[INFO] tweaked toml for crates.io crate null-terminated 0.3.14 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate null-terminated 0.3.14 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+96b3c169cd2d8959926fa240f10342f1659f8ae3" "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=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" "+96b3c169cd2d8959926fa240f10342f1659f8ae3" "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] d0b7e1aa2c46366d68033a2d5db42969c4a86cdb039d86350863e028f01c6ba3
[INFO] running `"docker" "start" "-a" "d0b7e1aa2c46366d68033a2d5db42969c4a86cdb039d86350863e028f01c6ba3"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking utf v0.1.5
[INFO] [stderr]     Checking system-call v0.1.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking null-terminated v0.3.14 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the feature `cfg_doctest` has been stable since 1.40.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 | #![feature(cfg_doctest)]
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking quickcheck v0.8.5
[INFO] [stderr]    Compiling quickcheck_macros v0.8.0
[INFO] [stderr] warning: the feature `cfg_doctest` has been stable since 1.40.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:25:12
[INFO] [stderr]    |
[INFO] [stderr] 25 | #![feature(cfg_doctest)]
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.75s
[INFO] running `"docker" "inspect" "d0b7e1aa2c46366d68033a2d5db42969c4a86cdb039d86350863e028f01c6ba3"`
[INFO] running `"docker" "rm" "-f" "d0b7e1aa2c46366d68033a2d5db42969c4a86cdb039d86350863e028f01c6ba3"`
[INFO] [stdout] d0b7e1aa2c46366d68033a2d5db42969c4a86cdb039d86350863e028f01c6ba3