Dec 11 14:33:15.345 INFO checking lowellmower/server against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 14:33:15.345 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 11 14:33:15.574 INFO [stdout] 4b7b0bfa576ffcd1832ddc7155061c7685bb5b61d0f59eba8bce68b218719ac2
Dec 11 14:33:15.576 INFO running `"docker" "start" "-a" "4b7b0bfa576ffcd1832ddc7155061c7685bb5b61d0f59eba8bce68b218719ac2"`
Dec 11 14:33:16.768 INFO [stderr] usermod: no changes
Dec 11 14:33:16.813 INFO [stderr]     Checking server v0.1.0 (/source)
Dec 11 14:33:17.332 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 11 14:33:17.332 INFO [stderr]   --> src/lib.rs:21:1
Dec 11 14:33:17.332 INFO [stderr]    |
Dec 11 14:33:17.332 INFO [stderr] 21 | pub type Job = Box<FnBox + Send + 'static>;
Dec 11 14:33:17.332 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 14:33:17.332 INFO [stderr]    |
Dec 11 14:33:17.332 INFO [stderr]    = note: #[warn(private_in_public)] on by default
Dec 11 14:33:17.332 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 11 14:33:17.332 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 11 14:33:17.332 INFO [stderr] 
Dec 11 14:33:17.332 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 11 14:33:17.332 INFO [stderr]   --> src/lib.rs:69:5
Dec 11 14:33:17.332 INFO [stderr]    |
Dec 11 14:33:17.332 INFO [stderr] 69 | /     pub fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
Dec 11 14:33:17.332 INFO [stderr] 70 | |         let thread = thread::spawn(move || loop {
Dec 11 14:33:17.332 INFO [stderr] 71 | |             let job = receiver.lock().unwrap().recv().unwrap();
Dec 11 14:33:17.332 INFO [stderr] 72 | |
Dec 11 14:33:17.332 INFO [stderr] ...  |
Dec 11 14:33:17.333 INFO [stderr] 85 | |         Worker { id, thread }
Dec 11 14:33:17.333 INFO [stderr] 86 | |     }
Dec 11 14:33:17.333 INFO [stderr]    | |_____^
Dec 11 14:33:17.333 INFO [stderr]    |
Dec 11 14:33:17.333 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 11 14:33:17.333 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 11 14:33:17.333 INFO [stderr] 
Dec 11 14:33:17.340 INFO [stderr] warning: field is never used: `workers`
Dec 11 14:33:17.340 INFO [stderr]  --> src/lib.rs:7:5
Dec 11 14:33:17.340 INFO [stderr]   |
Dec 11 14:33:17.340 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 11 14:33:17.340 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 11 14:33:17.344 INFO [stderr]   |
Dec 11 14:33:17.344 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 14:33:17.344 INFO [stderr] 
Dec 11 14:33:17.344 INFO [stderr] warning: field is never used: `id`
Dec 11 14:33:17.344 INFO [stderr]   --> src/lib.rs:58:5
Dec 11 14:33:17.344 INFO [stderr]    |
Dec 11 14:33:17.344 INFO [stderr] 58 |     id: usize,
Dec 11 14:33:17.344 INFO [stderr]    |     ^^^^^^^^^
Dec 11 14:33:17.344 INFO [stderr] 
Dec 11 14:33:17.344 INFO [stderr] warning: field is never used: `thread`
Dec 11 14:33:17.344 INFO [stderr]   --> src/lib.rs:59:5
Dec 11 14:33:17.344 INFO [stderr]    |
Dec 11 14:33:17.344 INFO [stderr] 59 |     thread: thread::JoinHandle<()>,
Dec 11 14:33:17.344 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 14:33:17.344 INFO [stderr] 
Dec 11 14:33:17.568 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 11 14:33:17.568 INFO [stderr]   --> src/lib.rs:21:1
Dec 11 14:33:17.568 INFO [stderr]    |
Dec 11 14:33:17.568 INFO [stderr] 21 | pub type Job = Box<FnBox + Send + 'static>;
Dec 11 14:33:17.568 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 14:33:17.568 INFO [stderr]    |
Dec 11 14:33:17.568 INFO [stderr]    = note: #[warn(private_in_public)] on by default
Dec 11 14:33:17.568 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 11 14:33:17.568 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 11 14:33:17.568 INFO [stderr] 
Dec 11 14:33:17.568 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 11 14:33:17.568 INFO [stderr]   --> src/lib.rs:69:5
Dec 11 14:33:17.568 INFO [stderr]    |
Dec 11 14:33:17.568 INFO [stderr] 69 | /     pub fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
Dec 11 14:33:17.568 INFO [stderr] 70 | |         let thread = thread::spawn(move || loop {
Dec 11 14:33:17.568 INFO [stderr] 71 | |             let job = receiver.lock().unwrap().recv().unwrap();
Dec 11 14:33:17.568 INFO [stderr] 72 | |
Dec 11 14:33:17.568 INFO [stderr] ...  |
Dec 11 14:33:17.568 INFO [stderr] 85 | |         Worker { id, thread }
Dec 11 14:33:17.568 INFO [stderr] 86 | |     }
Dec 11 14:33:17.568 INFO [stderr]    | |_____^
Dec 11 14:33:17.568 INFO [stderr]    |
Dec 11 14:33:17.569 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 11 14:33:17.569 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 11 14:33:17.569 INFO [stderr] 
Dec 11 14:33:17.584 INFO [stderr] warning: field is never used: `workers`
Dec 11 14:33:17.584 INFO [stderr]  --> src/lib.rs:7:5
Dec 11 14:33:17.584 INFO [stderr]   |
Dec 11 14:33:17.584 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 11 14:33:17.584 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 11 14:33:17.584 INFO [stderr]   |
Dec 11 14:33:17.584 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 11 14:33:17.584 INFO [stderr] 
Dec 11 14:33:17.584 INFO [stderr] warning: field is never used: `id`
Dec 11 14:33:17.584 INFO [stderr]   --> src/lib.rs:58:5
Dec 11 14:33:17.584 INFO [stderr]    |
Dec 11 14:33:17.584 INFO [stderr] 58 |     id: usize,
Dec 11 14:33:17.584 INFO [stderr]    |     ^^^^^^^^^
Dec 11 14:33:17.584 INFO [stderr] 
Dec 11 14:33:17.584 INFO [stderr] warning: field is never used: `thread`
Dec 11 14:33:17.584 INFO [stderr]   --> src/lib.rs:59:5
Dec 11 14:33:17.584 INFO [stderr]    |
Dec 11 14:33:17.584 INFO [stderr] 59 |     thread: thread::JoinHandle<()>,
Dec 11 14:33:17.584 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 14:33:17.584 INFO [stderr] 
Dec 11 14:33:17.909 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
Dec 11 14:33:17.911 INFO [stderr] su: No module specific data is present
Dec 11 14:33:18.438 INFO running `"docker" "inspect" "4b7b0bfa576ffcd1832ddc7155061c7685bb5b61d0f59eba8bce68b218719ac2"`
Dec 11 14:33:18.620 INFO running `"docker" "rm" "-f" "4b7b0bfa576ffcd1832ddc7155061c7685bb5b61d0f59eba8bce68b218719ac2"`
Dec 11 14:33:18.787 INFO [stdout] 4b7b0bfa576ffcd1832ddc7155061c7685bb5b61d0f59eba8bce68b218719ac2