[INFO] fetching crate elefren 0.20.1...
[INFO] checking elefren-0.20.1 against master#b61e69433951e31f7bd746e22f516a48ad41623b for prs-64470-and-65389
[INFO] extracting crate elefren 0.20.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate elefren 0.20.1 on toolchain b61e69433951e31f7bd746e22f516a48ad41623b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate elefren 0.20.1
[INFO] finished tweaking crates.io crate elefren 0.20.1
[INFO] tweaked toml for crates.io crate elefren 0.20.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b61e69433951e31f7bd746e22f516a48ad41623b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+b61e69433951e31f7bd746e22f516a48ad41623b" "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] 1bf36a8b30ac2a70567efc7c242787175b25d6edf669dbd6048dc482ea97e2bd
[INFO] running `"docker" "start" "-a" "1bf36a8b30ac2a70567efc7c242787175b25d6edf669dbd6048dc482ea97e2bd"`
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]     Checking bytecount v0.4.0
[INFO] [stderr]     Checking tap-reader v1.0.1
[INFO] [stderr]    Compiling pulldown-cmark v0.2.0
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]     Checking hyper-old-types v0.11.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking serde_qs v0.4.6
[INFO] [stderr]    Compiling isolang v1.0.0
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking cargo_metadata v0.6.4
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]    Compiling indoc-impl v0.3.4
[INFO] [stderr]     Checking skeptic v0.13.4
[INFO] [stderr]     Checking indoc v0.3.4
[INFO] [stderr]    Compiling serde_json v1.0.41
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling hyper v0.12.35
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling elefren v0.20.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking reqwest v0.9.22
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 50s
[INFO] running `"docker" "inspect" "1bf36a8b30ac2a70567efc7c242787175b25d6edf669dbd6048dc482ea97e2bd"`
[INFO] running `"docker" "rm" "-f" "1bf36a8b30ac2a70567efc7c242787175b25d6edf669dbd6048dc482ea97e2bd"`
[INFO] [stdout] 1bf36a8b30ac2a70567efc7c242787175b25d6edf669dbd6048dc482ea97e2bd