[INFO] crate arraygen 0.1.12 is already in cache
[INFO] checking arraygen-0.1.12 against master#7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3 for pr-71873
[INFO] extracting crate arraygen 0.1.12 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate arraygen 0.1.12 on toolchain 7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate arraygen 0.1.12
[INFO] finished tweaking crates.io crate arraygen 0.1.12
[INFO] tweaked toml for crates.io crate arraygen 0.1.12 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "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" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "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] 4fa039afc1d18ca71a2b4cae8dee50bb773d5abb2e6443b4bffca7400e38d5c6
[INFO] running `"docker" "start" "-a" "4fa039afc1d18ca71a2b4cae8dee50bb773d5abb2e6443b4bffca7400e38d5c6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling compiletest_rs v0.4.1
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking diff v0.1.12
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.12
[INFO] [stderr]    Compiling proc-macro-error v0.4.12
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking filetime v0.2.10
[INFO] [stderr]     Checking memchr v2.3.3
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking proc-macro2 v1.0.13
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking rustfix v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking quote v1.0.6
[INFO] [stderr]     Checking tester v0.7.0
[INFO] [stderr]     Checking syn v1.0.22
[INFO] [stderr]    Compiling arraygen v0.1.12 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr] warning: Method 'foo' returns an empty array.
[INFO] [stderr]    --> tests/arraygen.rs:133:24
[INFO] [stderr]     |
[INFO] [stderr] 133 |         #[gen_array(fn foo: i32)]
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.27s
[INFO] running `"docker" "inspect" "4fa039afc1d18ca71a2b4cae8dee50bb773d5abb2e6443b4bffca7400e38d5c6"`
[INFO] running `"docker" "rm" "-f" "4fa039afc1d18ca71a2b4cae8dee50bb773d5abb2e6443b4bffca7400e38d5c6"`
[INFO] [stdout] 4fa039afc1d18ca71a2b4cae8dee50bb773d5abb2e6443b4bffca7400e38d5c6