[INFO] fetching crate nsutils 0.0.5...
[INFO] checking nsutils-0.0.5 against master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363
[INFO] extracting crate nsutils 0.0.5 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate nsutils 0.0.5 on toolchain 430feb24a46993e5073c1bb1b39da190d83fa2bf
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nsutils 0.0.5
[INFO] finished tweaking crates.io crate nsutils 0.0.5
[INFO] tweaked toml for crates.io crate nsutils 0.0.5 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e1dbb8e819c0dd188173a7fc9ba46b12429b5cedaf7a69beecdd4ebead94f89e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e1dbb8e819c0dd188173a7fc9ba46b12429b5cedaf7a69beecdd4ebead94f89e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1dbb8e819c0dd188173a7fc9ba46b12429b5cedaf7a69beecdd4ebead94f89e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1dbb8e819c0dd188173a7fc9ba46b12429b5cedaf7a69beecdd4ebead94f89e", kill_on_drop: false }`
[INFO] [stdout] e1dbb8e819c0dd188173a7fc9ba46b12429b5cedaf7a69beecdd4ebead94f89e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fea0c89c0a42b0832dc4147d0e1810393a7ec2ab7ff81e16996905bf145482ca
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fea0c89c0a42b0832dc4147d0e1810393a7ec2ab7ff81e16996905bf145482ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking nom v1.2.4
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]    Compiling procinfo v0.3.1
[INFO] [stderr]     Checking nix v0.4.3
[INFO] [stderr]     Checking unshare v0.1.15
[INFO] [stderr]     Checking nsutils v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/nsutils.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 let mut listns = result_nslist.get_mut(&nsid).unwrap();
[INFO] [stdout]    |                     ----^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/nsutils.rs:61:21
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 let mut listns = result_nslist.get_mut(&nsid).unwrap();
[INFO] [stdout]    |                     ----^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.93s
[INFO] running `Command { std: "docker" "inspect" "fea0c89c0a42b0832dc4147d0e1810393a7ec2ab7ff81e16996905bf145482ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fea0c89c0a42b0832dc4147d0e1810393a7ec2ab7ff81e16996905bf145482ca", kill_on_drop: false }`
[INFO] [stdout] fea0c89c0a42b0832dc4147d0e1810393a7ec2ab7ff81e16996905bf145482ca