[INFO] fetching crate tk-bufstream 0.3.0...
[INFO] checking tk-bufstream-0.3.0 against master#f9fdf642bab2bfcabe1829a4c82aaf055330661b for pr-73102
[INFO] extracting crate tk-bufstream 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tk-bufstream 0.3.0 on toolchain f9fdf642bab2bfcabe1829a4c82aaf055330661b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate tk-bufstream 0.3.0
[INFO] finished tweaking crates.io crate tk-bufstream 0.3.0
[INFO] tweaked toml for crates.io crate tk-bufstream 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+f9fdf642bab2bfcabe1829a4c82aaf055330661b" "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] dbd3d1791eda36bc5520b8c73a324b6d93b36f97a40e58fad549cb96f655a6eb
[INFO] running `"docker" "start" "-a" "dbd3d1791eda36bc5520b8c73a324b6d93b36f97a40e58fad549cb96f655a6eb"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking netbuf v0.4.1
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking tokio-service v0.1.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tk-bufstream v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio-uds v0.2.6
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr] warning: unused import: `std::str`
[INFO] [stderr]  --> examples/raw_echo.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::str;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.67s
[INFO] running `"docker" "inspect" "dbd3d1791eda36bc5520b8c73a324b6d93b36f97a40e58fad549cb96f655a6eb"`
[INFO] running `"docker" "rm" "-f" "dbd3d1791eda36bc5520b8c73a324b6d93b36f97a40e58fad549cb96f655a6eb"`
[INFO] [stdout] dbd3d1791eda36bc5520b8c73a324b6d93b36f97a40e58fad549cb96f655a6eb