Dec 17 20:32:09.235 INFO checking lowellmower/server against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 20:32:09.235 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/lowellmower/server:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 20:32:09.492 INFO [stdout] 5f948fc2ca3df254d8cac4d9428196e13e1f62af06d546eca1b9873c371ff50b
Dec 17 20:32:09.494 INFO running `"docker" "start" "-a" "5f948fc2ca3df254d8cac4d9428196e13e1f62af06d546eca1b9873c371ff50b"`
Dec 17 20:32:10.092 INFO [stderr]     Checking server v0.1.0 (/opt/crater/workdir)
Dec 17 20:32:10.242 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 17 20:32:10.242 INFO [stderr]   --> src/lib.rs:21:1
Dec 17 20:32:10.242 INFO [stderr]    |
Dec 17 20:32:10.242 INFO [stderr] 21 | pub type Job = Box<FnBox + Send + 'static>;
Dec 17 20:32:10.242 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:32:10.242 INFO [stderr]    |
Dec 17 20:32:10.242 INFO [stderr]    = note: #[warn(private_in_public)] on by default
Dec 17 20:32:10.242 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 17 20:32:10.242 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 17 20:32:10.242 INFO [stderr] 
Dec 17 20:32:10.242 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 17 20:32:10.242 INFO [stderr]   --> src/lib.rs:69:5
Dec 17 20:32:10.242 INFO [stderr]    |
Dec 17 20:32:10.242 INFO [stderr] 69 | /     pub fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
Dec 17 20:32:10.242 INFO [stderr] 70 | |         let thread = thread::spawn(move || loop {
Dec 17 20:32:10.242 INFO [stderr] 71 | |             let job = receiver.lock().unwrap().recv().unwrap();
Dec 17 20:32:10.242 INFO [stderr] 72 | |
Dec 17 20:32:10.242 INFO [stderr] ...  |
Dec 17 20:32:10.242 INFO [stderr] 85 | |         Worker { id, thread }
Dec 17 20:32:10.242 INFO [stderr] 86 | |     }
Dec 17 20:32:10.242 INFO [stderr]    | |_____^
Dec 17 20:32:10.242 INFO [stderr]    |
Dec 17 20:32:10.242 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 17 20:32:10.242 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 17 20:32:10.242 INFO [stderr] 
Dec 17 20:32:10.247 INFO [stderr] warning: field is never used: `workers`
Dec 17 20:32:10.247 INFO [stderr]  --> src/lib.rs:7:5
Dec 17 20:32:10.247 INFO [stderr]   |
Dec 17 20:32:10.247 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 17 20:32:10.248 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 17 20:32:10.248 INFO [stderr]   |
Dec 17 20:32:10.248 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 20:32:10.248 INFO [stderr] 
Dec 17 20:32:10.248 INFO [stderr] warning: field is never used: `id`
Dec 17 20:32:10.248 INFO [stderr]   --> src/lib.rs:58:5
Dec 17 20:32:10.248 INFO [stderr]    |
Dec 17 20:32:10.248 INFO [stderr] 58 |     id: usize,
Dec 17 20:32:10.248 INFO [stderr]    |     ^^^^^^^^^
Dec 17 20:32:10.248 INFO [stderr] 
Dec 17 20:32:10.248 INFO [stderr] warning: field is never used: `thread`
Dec 17 20:32:10.248 INFO [stderr]   --> src/lib.rs:59:5
Dec 17 20:32:10.248 INFO [stderr]    |
Dec 17 20:32:10.248 INFO [stderr] 59 |     thread: thread::JoinHandle<()>,
Dec 17 20:32:10.248 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:32:10.248 INFO [stderr] 
Dec 17 20:32:10.283 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 17 20:32:10.283 INFO [stderr]   --> src/lib.rs:21:1
Dec 17 20:32:10.283 INFO [stderr]    |
Dec 17 20:32:10.283 INFO [stderr] 21 | pub type Job = Box<FnBox + Send + 'static>;
Dec 17 20:32:10.283 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:32:10.283 INFO [stderr]    |
Dec 17 20:32:10.283 INFO [stderr]    = note: #[warn(private_in_public)] on by default
Dec 17 20:32:10.283 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 17 20:32:10.283 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 17 20:32:10.283 INFO [stderr] 
Dec 17 20:32:10.283 INFO [stderr] warning: private type `(dyn FnBox + std::marker::Send + 'static)` in public interface (error E0446)
Dec 17 20:32:10.283 INFO [stderr]   --> src/lib.rs:69:5
Dec 17 20:32:10.283 INFO [stderr]    |
Dec 17 20:32:10.283 INFO [stderr] 69 | /     pub fn new(id: usize, receiver: Arc<Mutex<mpsc::Receiver<Job>>>) -> Worker {
Dec 17 20:32:10.283 INFO [stderr] 70 | |         let thread = thread::spawn(move || loop {
Dec 17 20:32:10.283 INFO [stderr] 71 | |             let job = receiver.lock().unwrap().recv().unwrap();
Dec 17 20:32:10.283 INFO [stderr] 72 | |
Dec 17 20:32:10.283 INFO [stderr] ...  |
Dec 17 20:32:10.283 INFO [stderr] 85 | |         Worker { id, thread }
Dec 17 20:32:10.283 INFO [stderr] 86 | |     }
Dec 17 20:32:10.283 INFO [stderr]    | |_____^
Dec 17 20:32:10.283 INFO [stderr]    |
Dec 17 20:32:10.283 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 17 20:32:10.283 INFO [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
Dec 17 20:32:10.283 INFO [stderr] 
Dec 17 20:32:10.292 INFO [stderr] warning: field is never used: `workers`
Dec 17 20:32:10.292 INFO [stderr]  --> src/lib.rs:7:5
Dec 17 20:32:10.292 INFO [stderr]   |
Dec 17 20:32:10.292 INFO [stderr] 7 |     workers: Vec<Worker>,
Dec 17 20:32:10.292 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 17 20:32:10.292 INFO [stderr]   |
Dec 17 20:32:10.292 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 17 20:32:10.292 INFO [stderr] 
Dec 17 20:32:10.292 INFO [stderr] warning: field is never used: `id`
Dec 17 20:32:10.292 INFO [stderr]   --> src/lib.rs:58:5
Dec 17 20:32:10.292 INFO [stderr]    |
Dec 17 20:32:10.292 INFO [stderr] 58 |     id: usize,
Dec 17 20:32:10.292 INFO [stderr]    |     ^^^^^^^^^
Dec 17 20:32:10.292 INFO [stderr] 
Dec 17 20:32:10.292 INFO [stderr] warning: field is never used: `thread`
Dec 17 20:32:10.292 INFO [stderr]   --> src/lib.rs:59:5
Dec 17 20:32:10.292 INFO [stderr]    |
Dec 17 20:32:10.292 INFO [stderr] 59 |     thread: thread::JoinHandle<()>,
Dec 17 20:32:10.292 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 20:32:10.292 INFO [stderr] 
Dec 17 20:32:10.425 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.34s
Dec 17 20:32:10.646 INFO running `"docker" "inspect" "5f948fc2ca3df254d8cac4d9428196e13e1f62af06d546eca1b9873c371ff50b"`
Dec 17 20:32:10.731 INFO running `"docker" "rm" "-f" "5f948fc2ca3df254d8cac4d9428196e13e1f62af06d546eca1b9873c371ff50b"`
Dec 17 20:32:10.803 INFO [stdout] 5f948fc2ca3df254d8cac4d9428196e13e1f62af06d546eca1b9873c371ff50b