Dec 04 14:59:25.740 INFO checking lowellmower/server against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 14:59:25.740 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 14:59:25.946 INFO [stdout] e7f6af3196e00ed101bdf006bb94f5ab62a08a7b3203141e785ecdf3553dfcac
Dec 04 14:59:25.948 INFO running `"docker" "start" "-a" "e7f6af3196e00ed101bdf006bb94f5ab62a08a7b3203141e785ecdf3553dfcac"`
Dec 04 14:59:27.183 INFO [stderr] usermod: no changes
Dec 04 14:59:27.240 INFO [stderr]     Checking server v0.1.0 (/source)
Dec 04 14:59:27.699 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 04 14:59:27.699 INFO [stderr]   --> src/lib.rs:21:1
Dec 04 14:59:27.699 INFO [stderr]    |
Dec 04 14:59:27.699 INFO [stderr] 21 | pub type Job = Box<FnBox + Send + 'static>;
Dec 04 14:59:27.699 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:59:27.699 INFO [stderr]    |
Dec 04 14:59:27.699 INFO [stderr]    = note: #[warn(private_in_public)] on by default
Dec 04 14:59:27.699 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 04 14:59:27.699 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 04 14:59:27.699 INFO [stderr] 
Dec 04 14:59:27.699 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 04 14:59:27.699 INFO [stderr]   --> src/lib.rs:69:5
Dec 04 14:59:27.699 INFO [stderr]    |
Dec 04 14:59:27.699 INFO [stderr] 69 | /     pub fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
Dec 04 14:59:27.699 INFO [stderr] 70 | |         let thread = thread::spawn(move || loop {
Dec 04 14:59:27.699 INFO [stderr] 71 | |             let job = receiver.lock().unwrap().recv().unwrap();
Dec 04 14:59:27.699 INFO [stderr] 72 | |
Dec 04 14:59:27.699 INFO [stderr] ...  |
Dec 04 14:59:27.699 INFO [stderr] 85 | |         Worker { id, thread }
Dec 04 14:59:27.699 INFO [stderr] 86 | |     }
Dec 04 14:59:27.699 INFO [stderr]    | |_____^
Dec 04 14:59:27.699 INFO [stderr]    |
Dec 04 14:59:27.699 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 04 14:59:27.699 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 04 14:59:27.699 INFO [stderr] 
Dec 04 14:59:27.711 INFO [stderr] warning: field is never used: `workers`
Dec 04 14:59:27.711 INFO [stderr]  --> src/lib.rs:7:5
Dec 04 14:59:27.711 INFO [stderr]   |
Dec 04 14:59:27.711 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 04 14:59:27.711 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 04 14:59:27.711 INFO [stderr]   |
Dec 04 14:59:27.711 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 14:59:27.711 INFO [stderr] 
Dec 04 14:59:27.711 INFO [stderr] warning: field is never used: `id`
Dec 04 14:59:27.711 INFO [stderr]   --> src/lib.rs:58:5
Dec 04 14:59:27.711 INFO [stderr]    |
Dec 04 14:59:27.711 INFO [stderr] 58 |     id: usize,
Dec 04 14:59:27.711 INFO [stderr]    |     ^^^^^^^^^
Dec 04 14:59:27.711 INFO [stderr] 
Dec 04 14:59:27.711 INFO [stderr] warning: field is never used: `thread`
Dec 04 14:59:27.711 INFO [stderr]   --> src/lib.rs:59:5
Dec 04 14:59:27.711 INFO [stderr]    |
Dec 04 14:59:27.711 INFO [stderr] 59 |     thread: thread::JoinHandle<()>,
Dec 04 14:59:27.711 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:59:27.711 INFO [stderr] 
Dec 04 14:59:27.971 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 04 14:59:27.971 INFO [stderr]   --> src/lib.rs:21:1
Dec 04 14:59:27.971 INFO [stderr]    |
Dec 04 14:59:27.971 INFO [stderr] 21 | pub type Job = Box<FnBox + Send + 'static>;
Dec 04 14:59:27.971 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:59:27.971 INFO [stderr]    |
Dec 04 14:59:27.971 INFO [stderr]    = note: #[warn(private_in_public)] on by default
Dec 04 14:59:27.971 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 04 14:59:27.971 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 04 14:59:27.971 INFO [stderr] 
Dec 04 14:59:27.971 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 04 14:59:27.971 INFO [stderr]   --> src/lib.rs:69:5
Dec 04 14:59:27.971 INFO [stderr]    |
Dec 04 14:59:27.971 INFO [stderr] 69 | /     pub fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
Dec 04 14:59:27.971 INFO [stderr] 70 | |         let thread = thread::spawn(move || loop {
Dec 04 14:59:27.971 INFO [stderr] 71 | |             let job = receiver.lock().unwrap().recv().unwrap();
Dec 04 14:59:27.971 INFO [stderr] 72 | |
Dec 04 14:59:27.971 INFO [stderr] ...  |
Dec 04 14:59:27.971 INFO [stderr] 85 | |         Worker { id, thread }
Dec 04 14:59:27.971 INFO [stderr] 86 | |     }
Dec 04 14:59:27.971 INFO [stderr]    | |_____^
Dec 04 14:59:27.971 INFO [stderr]    |
Dec 04 14:59:27.971 INFO [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
Dec 04 14:59:27.971 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 04 14:59:27.971 INFO [stderr] 
Dec 04 14:59:27.995 INFO [stderr] warning: field is never used: `workers`
Dec 04 14:59:27.995 INFO [stderr]  --> src/lib.rs:7:5
Dec 04 14:59:27.995 INFO [stderr]   |
Dec 04 14:59:27.995 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 04 14:59:27.995 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 04 14:59:27.995 INFO [stderr]   |
Dec 04 14:59:27.995 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 04 14:59:27.995 INFO [stderr] 
Dec 04 14:59:27.995 INFO [stderr] warning: field is never used: `id`
Dec 04 14:59:27.995 INFO [stderr]   --> src/lib.rs:58:5
Dec 04 14:59:27.995 INFO [stderr]    |
Dec 04 14:59:27.995 INFO [stderr] 58 |     id: usize,
Dec 04 14:59:27.995 INFO [stderr]    |     ^^^^^^^^^
Dec 04 14:59:27.995 INFO [stderr] 
Dec 04 14:59:27.995 INFO [stderr] warning: field is never used: `thread`
Dec 04 14:59:27.995 INFO [stderr]   --> src/lib.rs:59:5
Dec 04 14:59:27.995 INFO [stderr]    |
Dec 04 14:59:27.995 INFO [stderr] 59 |     thread: thread::JoinHandle<()>,
Dec 04 14:59:27.995 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 14:59:27.995 INFO [stderr] 
Dec 04 14:59:28.265 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
Dec 04 14:59:28.267 INFO [stderr] su: No module specific data is present
Dec 04 14:59:28.513 INFO running `"docker" "inspect" "e7f6af3196e00ed101bdf006bb94f5ab62a08a7b3203141e785ecdf3553dfcac"`
Dec 04 14:59:28.625 INFO running `"docker" "rm" "-f" "e7f6af3196e00ed101bdf006bb94f5ab62a08a7b3203141e785ecdf3553dfcac"`
Dec 04 14:59:28.721 INFO [stdout] e7f6af3196e00ed101bdf006bb94f5ab62a08a7b3203141e785ecdf3553dfcac