[INFO] crate core_extensions 0.1.16 is already in cache
[INFO] checking core_extensions-0.1.16 against try#b2a885c600d942fb829a214e798f7ae205a0594e for pr-71796
[INFO] extracting crate core_extensions 0.1.16 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate core_extensions 0.1.16 on toolchain b2a885c600d942fb829a214e798f7ae205a0594e
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b2a885c600d942fb829a214e798f7ae205a0594e" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate core_extensions 0.1.16
[INFO] finished tweaking crates.io crate core_extensions 0.1.16
[INFO] tweaked toml for crates.io crate core_extensions 0.1.16 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b2a885c600d942fb829a214e798f7ae205a0594e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b2a885c600d942fb829a214e798f7ae205a0594e" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+b2a885c600d942fb829a214e798f7ae205a0594e" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] b17fb8b5b2da4c349f7c3b10b0dd664a962d3868663049f79eca820f902c8745
[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" "b17fb8b5b2da4c349f7c3b10b0dd664a962d3868663049f79eca820f902c8745"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling core_extensions v0.1.16 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rand_derive v0.3.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.05s
[INFO] running `"docker" "inspect" "b17fb8b5b2da4c349f7c3b10b0dd664a962d3868663049f79eca820f902c8745"`
[INFO] running `"docker" "rm" "-f" "b17fb8b5b2da4c349f7c3b10b0dd664a962d3868663049f79eca820f902c8745"`
[INFO] [stdout] b17fb8b5b2da4c349f7c3b10b0dd664a962d3868663049f79eca820f902c8745