[INFO] cloning repository https://github.com/Denteyon/simple-shell
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Denteyon/simple-shell" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDenteyon%2Fsimple-shell"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDenteyon%2Fsimple-shell'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 53018b2351c29924e1143f5201a886f1f1ade9a1
[INFO] checking Denteyon/simple-shell against try#1a399c10897767c36d147199696c96f193034e49 for pr-72644
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDenteyon%2Fsimple-shell" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Denteyon/simple-shell on toolchain 1a399c10897767c36d147199696c96f193034e49
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a399c10897767c36d147199696c96f193034e49" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Denteyon/simple-shell
[INFO] finished tweaking git repo https://github.com/Denteyon/simple-shell
[INFO] tweaked toml for git repo https://github.com/Denteyon/simple-shell written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Denteyon/simple-shell already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a399c10897767c36d147199696c96f193034e49" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1a399c10897767c36d147199696c96f193034e49" "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] b3e851e0399e92a58ca8f2b2a72ec073fe0a73c24cc75c86c0dd12cf2cdf118f
[INFO] running `"docker" "start" "-a" "b3e851e0399e92a58ca8f2b2a72ec073fe0a73c24cc75c86c0dd12cf2cdf118f"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking simple-shell v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `child`
[INFO] [stderr]   --> src/main.rs:39:37
[INFO] [stderr]    |
[INFO] [stderr] 39 |             Ok(ForkResult::Parent { child, .. }) => {}
[INFO] [stderr]    |                                     ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `child`
[INFO] [stderr]   --> src/main.rs:39:37
[INFO] [stderr]    |
[INFO] [stderr] 39 |             Ok(ForkResult::Parent { child, .. }) => {}
[INFO] [stderr]    |                                     ^^^^^ help: try ignoring the field: `child: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.19s
[INFO] running `"docker" "inspect" "b3e851e0399e92a58ca8f2b2a72ec073fe0a73c24cc75c86c0dd12cf2cdf118f"`
[INFO] running `"docker" "rm" "-f" "b3e851e0399e92a58ca8f2b2a72ec073fe0a73c24cc75c86c0dd12cf2cdf118f"`
[INFO] [stdout] b3e851e0399e92a58ca8f2b2a72ec073fe0a73c24cc75c86c0dd12cf2cdf118f