[INFO] updating cached repository https://github.com/gamozolabs/slime_tree
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b3522d61582ee4bd0742a265b81d2b94ffcf1a6c
[INFO] checking gamozolabs/slime_tree against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgamozolabs%2Fslime_tree" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gamozolabs/slime_tree on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/gamozolabs/slime_tree
[INFO] finished tweaking git repo https://github.com/gamozolabs/slime_tree
[INFO] tweaked toml for git repo https://github.com/gamozolabs/slime_tree written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/gamozolabs/slime_tree already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 6650736ff052eeb1d72873f1cc5b590d64708e7224909618b6e19c9790772a63
[INFO] running `"docker" "start" "-a" "6650736ff052eeb1d72873f1cc5b590d64708e7224909618b6e19c9790772a63"`
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking slime_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]   --> src/main.rs:55:53
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn worker(listing: Arc<Vec<(PathBuf, bool, bool)>>, stream: Arc<Mutex<TcpStream>>) {
[INFO] [stderr]    |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `inform_filename`
[INFO] [stderr]    --> src/main.rs:122:4
[INFO] [stderr]     |
[INFO] [stderr] 122 | fn inform_filename(handle: &Mutex<TcpStream>, filename: &str) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stream`
[INFO] [stderr]   --> src/main.rs:55:53
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn worker(listing: Arc<Vec<(PathBuf, bool, bool)>>, stream: Arc<Mutex<TcpStream>>) {
[INFO] [stderr]    |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_stream`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `inform_filename`
[INFO] [stderr]    --> src/main.rs:122:4
[INFO] [stderr]     |
[INFO] [stderr] 122 | fn inform_filename(handle: &Mutex<TcpStream>, filename: &str) {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.83s
[INFO] running `"docker" "inspect" "6650736ff052eeb1d72873f1cc5b590d64708e7224909618b6e19c9790772a63"`
[INFO] running `"docker" "rm" "-f" "6650736ff052eeb1d72873f1cc5b590d64708e7224909618b6e19c9790772a63"`
[INFO] [stdout] 6650736ff052eeb1d72873f1cc5b590d64708e7224909618b6e19c9790772a63