[INFO] fetching crate bulls-and-cows 1.0.13...
[INFO] checking bulls-and-cows-1.0.13 against master#7f940ef5d91b53e889f111f27e00849f2f5ae4a2 for pr-72493
[INFO] extracting crate bulls-and-cows 1.0.13 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate bulls-and-cows 1.0.13 on toolchain 7f940ef5d91b53e889f111f27e00849f2f5ae4a2
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7f940ef5d91b53e889f111f27e00849f2f5ae4a2" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate bulls-and-cows 1.0.13
[INFO] finished tweaking crates.io crate bulls-and-cows 1.0.13
[INFO] tweaked toml for crates.io crate bulls-and-cows 1.0.13 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate bulls-and-cows 1.0.13 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7f940ef5d91b53e889f111f27e00849f2f5ae4a2" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+7f940ef5d91b53e889f111f27e00849f2f5ae4a2" "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] 2ce5e1e6777f9511ee61622b29010d5fc2596528e47c5198a194392b423ac963
[INFO] running `"docker" "start" "-a" "2ce5e1e6777f9511ee61622b29010d5fc2596528e47c5198a194392b423ac963"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling memchr v2.3.2
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]     Checking debug-helper v0.3.8
[INFO] [stderr]     Checking permutohedron v0.2.4
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.8
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking random-integer v1.0.5
[INFO] [stderr]     Checking random-pick v1.2.7
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking bulls-and-cows v1.0.13 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary braces around block return value
[INFO] [stderr]   --> examples/custom_2_players.rs:15:38
[INFO] [stderr]    |
[INFO] [stderr] 15 |     static ref AB_PARSER: ABParser = { ABParser::new() };
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.31s
[INFO] running `"docker" "inspect" "2ce5e1e6777f9511ee61622b29010d5fc2596528e47c5198a194392b423ac963"`
[INFO] running `"docker" "rm" "-f" "2ce5e1e6777f9511ee61622b29010d5fc2596528e47c5198a194392b423ac963"`
[INFO] [stdout] 2ce5e1e6777f9511ee61622b29010d5fc2596528e47c5198a194392b423ac963