Nov 30 01:13:25.251 INFO checking jakobdalsgaard/rust-examples against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 01:13:25.251 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-2/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/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 +a49316ddc99d9d595193557fc899f6c52e4d9af9-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"`
Nov 30 01:13:25.432 INFO [stdout] b792a1a3c63a6a79f3948528f308a3c23913feabe62a44b791534e0ac29972ba
Nov 30 01:13:25.435 INFO running `"docker" "start" "-a" "b792a1a3c63a6a79f3948528f308a3c23913feabe62a44b791534e0ac29972ba"`
Nov 30 01:13:25.952 INFO [stderr] usermod: no changes
Nov 30 01:13:25.983 INFO [stderr]     Checking log v0.3.6
Nov 30 01:13:26.184 INFO [stderr]     Checking futures v0.1.10
Nov 30 01:13:28.075 INFO [stderr]     Checking rust-examples v0.1.0 (/source)
Nov 30 01:13:29.416 INFO [stderr] warning: unused import: `std::thread`
Nov 30 01:13:29.416 INFO [stderr]  --> examples/inc.rs:1:5
Nov 30 01:13:29.416 INFO [stderr]   |
Nov 30 01:13:29.416 INFO [stderr] 1 | use std::thread;
Nov 30 01:13:29.416 INFO [stderr]   |     ^^^^^^^^^^^
Nov 30 01:13:29.416 INFO [stderr]   |
Nov 30 01:13:29.416 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 01:13:29.416 INFO [stderr] 
Nov 30 01:13:29.417 INFO [stderr] warning: unused import: `std::sync::mpsc::channel`
Nov 30 01:13:29.417 INFO [stderr]  --> examples/inc.rs:2:5
Nov 30 01:13:29.417 INFO [stderr]   |
Nov 30 01:13:29.417 INFO [stderr] 2 | use std::sync::mpsc::channel;
Nov 30 01:13:29.417 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 01:13:29.417 INFO [stderr] 
Nov 30 01:13:29.604 INFO [stderr] warning: variable does not need to be mutable
Nov 30 01:13:29.604 INFO [stderr]  --> examples/stdchannels.rs:8:16
Nov 30 01:13:29.604 INFO [stderr]   |
Nov 30 01:13:29.604 INFO [stderr] 8 |   let (mut tx, mut rx) = sync_channel(0);
Nov 30 01:13:29.604 INFO [stderr]   |                ----^^
Nov 30 01:13:29.604 INFO [stderr]   |                |
Nov 30 01:13:29.604 INFO [stderr]   |                help: remove this `mut`
Nov 30 01:13:29.604 INFO [stderr]   |
Nov 30 01:13:29.604 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Nov 30 01:13:29.604 INFO [stderr] 
Nov 30 01:13:29.605 INFO [stderr] warning: variable does not need to be mutable
Nov 30 01:13:29.605 INFO [stderr]  --> examples/stdchannels.rs:8:8
Nov 30 01:13:29.605 INFO [stderr]   |
Nov 30 01:13:29.605 INFO [stderr] 8 |   let (mut tx, mut rx) = sync_channel(0);
Nov 30 01:13:29.605 INFO [stderr]   |        ----^^
Nov 30 01:13:29.605 INFO [stderr]   |        |
Nov 30 01:13:29.605 INFO [stderr]   |        help: remove this `mut`
Nov 30 01:13:29.605 INFO [stderr] 
Nov 30 01:13:29.613 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 01:13:29.613 INFO [stderr]   --> examples/stdchannels.rs:17:7
Nov 30 01:13:29.613 INFO [stderr]    |
Nov 30 01:13:29.613 INFO [stderr] 17 |       tx.send(7);
Nov 30 01:13:29.613 INFO [stderr]    |       ^^^^^^^^^^^
Nov 30 01:13:29.613 INFO [stderr]    |
Nov 30 01:13:29.613 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 01:13:29.614 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 01:13:29.614 INFO [stderr] 
Nov 30 01:13:29.664 INFO [stderr] warning: unused import: `futures::sync::mpsc::Sender`
Nov 30 01:13:29.664 INFO [stderr]  --> examples/futurechannels.rs:7:5
Nov 30 01:13:29.664 INFO [stderr]   |
Nov 30 01:13:29.664 INFO [stderr] 7 | use futures::sync::mpsc::Sender;
Nov 30 01:13:29.664 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 01:13:29.664 INFO [stderr]   |
Nov 30 01:13:29.664 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 30 01:13:29.664 INFO [stderr] 
Nov 30 01:13:29.774 INFO [stderr] warning: unused variable: `child2`
Nov 30 01:13:29.774 INFO [stderr]   --> examples/futurechannels.rs:28:7
Nov 30 01:13:29.775 INFO [stderr]    |
Nov 30 01:13:29.775 INFO [stderr] 28 |   let child2 = thread::spawn(move || {
Nov 30 01:13:29.775 INFO [stderr]    |       ^^^^^^ help: consider using `_child2` instead
Nov 30 01:13:29.775 INFO [stderr]    |
Nov 30 01:13:29.776 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 01:13:29.776 INFO [stderr] 
Nov 30 01:13:29.776 INFO [stderr] warning: unused variable: `rest`
Nov 30 01:13:29.777 INFO [stderr]   --> examples/futurechannels.rs:66:14
Nov 30 01:13:29.777 INFO [stderr]    |
Nov 30 01:13:29.777 INFO [stderr] 66 |   let (item, rest) = rest.into_future().wait().ok().unwrap();
Nov 30 01:13:29.777 INFO [stderr]    |              ^^^^ help: consider using `_rest` instead
Nov 30 01:13:29.778 INFO [stderr] 
Nov 30 01:13:29.805 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 01:13:29.805 INFO [stderr]   --> examples/futurechannels.rs:14:5
Nov 30 01:13:29.805 INFO [stderr]    |
Nov 30 01:13:29.805 INFO [stderr] 14 | /     receiver.map(|i| {
Nov 30 01:13:29.805 INFO [stderr] 15 | |       println!("got: {}", i);
Nov 30 01:13:29.805 INFO [stderr] 16 | |     }).wait();
Nov 30 01:13:29.805 INFO [stderr]    | |______________^
Nov 30 01:13:29.805 INFO [stderr]    |
Nov 30 01:13:29.805 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Nov 30 01:13:29.805 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 01:13:29.805 INFO [stderr] 
Nov 30 01:13:29.805 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 01:13:29.805 INFO [stderr]   --> examples/futurechannels.rs:30:5
Nov 30 01:13:29.805 INFO [stderr]    |
Nov 30 01:13:29.805 INFO [stderr] 30 |     sender2.send(1).and_then(|tx| { println!("sending 2"); tx.send(2) } ).wait();
Nov 30 01:13:29.805 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 01:13:29.805 INFO [stderr]    |
Nov 30 01:13:29.805 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 01:13:29.805 INFO [stderr] 
Nov 30 01:13:29.805 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 01:13:29.805 INFO [stderr]   --> examples/futurechannels.rs:49:3
Nov 30 01:13:29.805 INFO [stderr]    |
Nov 30 01:13:29.805 INFO [stderr] 49 |   sender3.send(5).and_then(|tx| tx.send(6)).wait();
Nov 30 01:13:29.805 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 01:13:29.805 INFO [stderr]    |
Nov 30 01:13:29.805 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 01:13:29.805 INFO [stderr] 
Nov 30 01:13:29.830 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.86s
Nov 30 01:13:29.831 INFO [stderr] su: No module specific data is present
Nov 30 01:13:30.394 INFO running `"docker" "inspect" "b792a1a3c63a6a79f3948528f308a3c23913feabe62a44b791534e0ac29972ba"`
Nov 30 01:13:30.718 INFO running `"docker" "rm" "-f" "b792a1a3c63a6a79f3948528f308a3c23913feabe62a44b791534e0ac29972ba"`
Nov 30 01:13:30.964 INFO [stdout] b792a1a3c63a6a79f3948528f308a3c23913feabe62a44b791534e0ac29972ba