[INFO] crate mio-child-process 0.2.1 is already in cache
[INFO] checking mio-child-process-0.2.1 against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] extracting crate mio-child-process 0.2.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate mio-child-process 0.2.1 on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mio-child-process 0.2.1
[INFO] finished tweaking crates.io crate mio-child-process 0.2.1
[INFO] tweaked toml for crates.io crate mio-child-process 0.2.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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] 0c5d25f5a70613aca0bd8b048aad7be7b577da71c5862bddb0d08cca1b3201d3
[INFO] running `"docker" "start" "-a" "0c5d25f5a70613aca0bd8b048aad7be7b577da71c5862bddb0d08cca1b3201d3"`
[INFO] [stderr]     Checking mio-child-process v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: the item `Error` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:234:13
[INFO] [stderr]     |
[INFO] [stderr] 77  | use std::io::{Error, ErrorKind, Read, Result, Write};
[INFO] [stderr]     |               ----- the item `Error` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 234 |         use std::io::Error;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Error` is imported redundantly
[INFO] [stderr]    --> src/lib.rs:234:13
[INFO] [stderr]     |
[INFO] [stderr] 77  | use std::io::{Error, ErrorKind, Read, Result, Write};
[INFO] [stderr]     |               ----- the item `Error` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 234 |         use std::io::Error;
[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] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `"docker" "inspect" "0c5d25f5a70613aca0bd8b048aad7be7b577da71c5862bddb0d08cca1b3201d3"`
[INFO] running `"docker" "rm" "-f" "0c5d25f5a70613aca0bd8b048aad7be7b577da71c5862bddb0d08cca1b3201d3"`
[INFO] [stdout] 0c5d25f5a70613aca0bd8b048aad7be7b577da71c5862bddb0d08cca1b3201d3