[INFO] updating cached repository https://github.com/brundonsmith/loading_dock
[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] 19121fec9b909a06667bcf833f4cccbad16923fd
[INFO] checking brundonsmith/loading_dock against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrundonsmith%2Floading_dock" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brundonsmith/loading_dock on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/brundonsmith/loading_dock
[INFO] finished tweaking git repo https://github.com/brundonsmith/loading_dock
[INFO] tweaked toml for git repo https://github.com/brundonsmith/loading_dock written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/brundonsmith/loading_dock already has a lockfile, it will not be regenerated
[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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 38c6e8e25e2ddb888c2b6ea0e2c6a4234532e32cb85dba9d8bf931734f2bedc9
[INFO] running `"docker" "start" "-a" "38c6e8e25e2ddb888c2b6ea0e2c6a4234532e32cb85dba9d8bf931734f2bedc9"`
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[INFO] [stderr] warning: unused variable: `file_timestamps`
[INFO] [stderr]   --> src/requests.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn greet_contact(file_timestamps: &'static Mutex<HashMap<PathBuf,Duration>>, other_nodes: &'static Mutex<HashSet<String>>, my_port: &str, address: &str) {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_timestamps`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/serialization.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn new(source: I, delimiter: T) -> Interspersed<T,I> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `foo`
[INFO] [stderr]   --> src/serialization.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn foo() {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialize_file_timestamps`
[INFO] [stderr]   --> src/serialization.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 | pub fn deserialize_file_timestamps(string: &str) -> HashMap<PathBuf,Duration> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/serialization.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     Interspersed::new(vec![1, 2, 3, 4, 5].iter(), &0).collect::<Vec<&u32>>();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_timestamps`
[INFO] [stderr]   --> src/requests.rs:19:22
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn greet_contact(file_timestamps: &'static Mutex<HashMap<PathBuf,Duration>>, other_nodes: &'static Mutex<HashSet<String>>, my_port: &str, address: &str) {
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_timestamps`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/serialization.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn new(source: I, delimiter: T) -> Interspersed<T,I> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `foo`
[INFO] [stderr]   --> src/serialization.rs:38:4
[INFO] [stderr]    |
[INFO] [stderr] 38 | fn foo() {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deserialize_file_timestamps`
[INFO] [stderr]   --> src/serialization.rs:56:8
[INFO] [stderr]    |
[INFO] [stderr] 56 | pub fn deserialize_file_timestamps(string: &str) -> HashMap<PathBuf,Duration> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::iter::Iterator::collect` that must be used
[INFO] [stderr]   --> src/serialization.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     Interspersed::new(vec![1, 2, 3, 4, 5].iter(), &0).collect::<Vec<&u32>>();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 53s
[INFO] running `"docker" "inspect" "38c6e8e25e2ddb888c2b6ea0e2c6a4234532e32cb85dba9d8bf931734f2bedc9"`
[INFO] running `"docker" "rm" "-f" "38c6e8e25e2ddb888c2b6ea0e2c6a4234532e32cb85dba9d8bf931734f2bedc9"`
[INFO] [stdout] 38c6e8e25e2ddb888c2b6ea0e2c6a4234532e32cb85dba9d8bf931734f2bedc9