Dec 11 16:39:42.825 INFO checking jakobdalsgaard/rust-examples against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 16:39:42.825 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 16:39:43.259 INFO [stdout] 5d6f2c337709132e97fee942f4a7702e5bba551c19505fc26964e8afa79808b7
Dec 11 16:39:43.268 INFO running `"docker" "start" "-a" "5d6f2c337709132e97fee942f4a7702e5bba551c19505fc26964e8afa79808b7"`
Dec 11 16:39:44.008 INFO [stderr] usermod: no changes
Dec 11 16:39:44.052 INFO [stderr]     Checking log v0.3.6
Dec 11 16:39:44.248 INFO [stderr]     Checking futures v0.1.10
Dec 11 16:39:46.060 INFO [stderr]     Checking rust-examples v0.1.0 (/source)
Dec 11 16:39:47.429 INFO [stderr] warning: variable does not need to be mutable
Dec 11 16:39:47.429 INFO [stderr]  --> examples/stdchannels.rs:8:16
Dec 11 16:39:47.429 INFO [stderr]   |
Dec 11 16:39:47.429 INFO [stderr] 8 |   let (mut tx, mut rx) = sync_channel(0);
Dec 11 16:39:47.429 INFO [stderr]   |                ----^^
Dec 11 16:39:47.429 INFO [stderr]   |                |
Dec 11 16:39:47.429 INFO [stderr]   |                help: remove this `mut`
Dec 11 16:39:47.429 INFO [stderr]   |
Dec 11 16:39:47.429 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 11 16:39:47.429 INFO [stderr] 
Dec 11 16:39:47.429 INFO [stderr] warning: variable does not need to be mutable
Dec 11 16:39:47.429 INFO [stderr]  --> examples/stdchannels.rs:8:8
Dec 11 16:39:47.429 INFO [stderr]   |
Dec 11 16:39:47.429 INFO [stderr] 8 |   let (mut tx, mut rx) = sync_channel(0);
Dec 11 16:39:47.429 INFO [stderr]   |        ----^^
Dec 11 16:39:47.429 INFO [stderr]   |        |
Dec 11 16:39:47.429 INFO [stderr]   |        help: remove this `mut`
Dec 11 16:39:47.429 INFO [stderr] 
Dec 11 16:39:47.439 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 16:39:47.439 INFO [stderr]   --> examples/stdchannels.rs:17:7
Dec 11 16:39:47.439 INFO [stderr]    |
Dec 11 16:39:47.439 INFO [stderr] 17 |       tx.send(7);
Dec 11 16:39:47.439 INFO [stderr]    |       ^^^^^^^^^^^
Dec 11 16:39:47.439 INFO [stderr]    |
Dec 11 16:39:47.439 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 16:39:47.439 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 16:39:47.439 INFO [stderr] 
Dec 11 16:39:47.656 INFO [stderr] warning: unused import: `std::thread`
Dec 11 16:39:47.656 INFO [stderr]  --> examples/inc.rs:1:5
Dec 11 16:39:47.656 INFO [stderr]   |
Dec 11 16:39:47.656 INFO [stderr] 1 | use std::thread;
Dec 11 16:39:47.656 INFO [stderr]   |     ^^^^^^^^^^^
Dec 11 16:39:47.664 INFO [stderr]   |
Dec 11 16:39:47.664 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 16:39:47.664 INFO [stderr] 
Dec 11 16:39:47.664 INFO [stderr] warning: unused import: `std::sync::mpsc::channel`
Dec 11 16:39:47.664 INFO [stderr]  --> examples/inc.rs:2:5
Dec 11 16:39:47.664 INFO [stderr]   |
Dec 11 16:39:47.664 INFO [stderr] 2 | use std::sync::mpsc::channel;
Dec 11 16:39:47.664 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:39:47.664 INFO [stderr] 
Dec 11 16:39:47.724 INFO [stderr] warning: unused import: `futures::sync::mpsc::Sender`
Dec 11 16:39:47.724 INFO [stderr]  --> examples/futurechannels.rs:7:5
Dec 11 16:39:47.724 INFO [stderr]   |
Dec 11 16:39:47.724 INFO [stderr] 7 | use futures::sync::mpsc::Sender;
Dec 11 16:39:47.724 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:39:47.724 INFO [stderr]   |
Dec 11 16:39:47.724 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 16:39:47.724 INFO [stderr] 
Dec 11 16:39:47.848 INFO [stderr] warning: unused variable: `child2`
Dec 11 16:39:47.848 INFO [stderr]   --> examples/futurechannels.rs:28:7
Dec 11 16:39:47.848 INFO [stderr]    |
Dec 11 16:39:47.848 INFO [stderr] 28 |   let child2 = thread::spawn(move || {
Dec 11 16:39:47.848 INFO [stderr]    |       ^^^^^^ help: consider using `_child2` instead
Dec 11 16:39:47.848 INFO [stderr]    |
Dec 11 16:39:47.848 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 16:39:47.848 INFO [stderr] 
Dec 11 16:39:47.848 INFO [stderr] warning: unused variable: `rest`
Dec 11 16:39:47.848 INFO [stderr]   --> examples/futurechannels.rs:66:14
Dec 11 16:39:47.848 INFO [stderr]    |
Dec 11 16:39:47.848 INFO [stderr] 66 |   let (item, rest) = rest.into_future().wait().ok().unwrap();
Dec 11 16:39:47.848 INFO [stderr]    |              ^^^^ help: consider using `_rest` instead
Dec 11 16:39:47.848 INFO [stderr] 
Dec 11 16:39:47.872 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 16:39:47.872 INFO [stderr]   --> examples/futurechannels.rs:14:5
Dec 11 16:39:47.872 INFO [stderr]    |
Dec 11 16:39:47.872 INFO [stderr] 14 | /     receiver.map(|i| {
Dec 11 16:39:47.873 INFO [stderr] 15 | |       println!("got: {}", i);
Dec 11 16:39:47.873 INFO [stderr] 16 | |     }).wait();
Dec 11 16:39:47.873 INFO [stderr]    | |______________^
Dec 11 16:39:47.873 INFO [stderr]    |
Dec 11 16:39:47.873 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 16:39:47.873 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 16:39:47.873 INFO [stderr] 
Dec 11 16:39:47.873 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 16:39:47.873 INFO [stderr]   --> examples/futurechannels.rs:30:5
Dec 11 16:39:47.873 INFO [stderr]    |
Dec 11 16:39:47.873 INFO [stderr] 30 |     sender2.send(1).and_then(|tx| { println!("sending 2"); tx.send(2) } ).wait();
Dec 11 16:39:47.873 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:39:47.873 INFO [stderr]    |
Dec 11 16:39:47.873 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 16:39:47.873 INFO [stderr] 
Dec 11 16:39:47.873 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 16:39:47.873 INFO [stderr]   --> examples/futurechannels.rs:49:3
Dec 11 16:39:47.873 INFO [stderr]    |
Dec 11 16:39:47.873 INFO [stderr] 49 |   sender3.send(5).and_then(|tx| tx.send(6)).wait();
Dec 11 16:39:47.873 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:39:47.873 INFO [stderr]    |
Dec 11 16:39:47.873 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 16:39:47.873 INFO [stderr] 
Dec 11 16:39:47.900 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.87s
Dec 11 16:39:47.904 INFO [stderr] su: No module specific data is present
Dec 11 16:39:48.551 INFO running `"docker" "inspect" "5d6f2c337709132e97fee942f4a7702e5bba551c19505fc26964e8afa79808b7"`
Dec 11 16:39:48.844 INFO running `"docker" "rm" "-f" "5d6f2c337709132e97fee942f4a7702e5bba551c19505fc26964e8afa79808b7"`
Dec 11 16:39:49.152 INFO [stdout] 5d6f2c337709132e97fee942f4a7702e5bba551c19505fc26964e8afa79808b7