Dec 02 14:44:38.518 INFO testing tangle-0.4.0 against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Dec 02 14:44:38.518 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 14:44:38.959 INFO [stdout] 54761d6bcab65759f2aa0d44e4c617fb1e644ede7e87a20c762e96d54e965a5a
Dec 02 14:44:38.967 INFO running `"docker" "start" "-a" "54761d6bcab65759f2aa0d44e4c617fb1e644ede7e87a20c762e96d54e965a5a"`
Dec 02 14:44:39.996 INFO [stderr] usermod: no changes
Dec 02 14:44:40.070 INFO [stderr]    Compiling threadpool v1.7.1
Dec 02 14:44:41.535 INFO [stderr]    Compiling tangle v0.4.0 (/source)
Dec 02 14:44:42.130 INFO [stderr] warning: unused import: `std::thread`
Dec 02 14:44:42.130 INFO [stderr]  --> src/lib.rs:7:5
Dec 02 14:44:42.130 INFO [stderr]   |
Dec 02 14:44:42.130 INFO [stderr] 7 | use std::thread;
Dec 02 14:44:42.130 INFO [stderr]   |     ^^^^^^^^^^^
Dec 02 14:44:42.130 INFO [stderr]   |
Dec 02 14:44:42.130 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 02 14:44:42.130 INFO [stderr] 
Dec 02 14:44:42.130 INFO [stderr] warning: unused import: `std::convert`
Dec 02 14:44:42.130 INFO [stderr]   --> src/lib.rs:10:5
Dec 02 14:44:42.130 INFO [stderr]    |
Dec 02 14:44:42.131 INFO [stderr] 10 | use std::convert;
Dec 02 14:44:42.131 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 02 14:44:42.131 INFO [stderr] 
Dec 02 14:44:42.131 INFO [stderr] warning: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions.
Dec 02 14:44:42.132 INFO [stderr]    --> src/lib.rs:178:9
Dec 02 14:44:42.132 INFO [stderr]     |
Dec 02 14:44:42.132 INFO [stderr] 178 | impl<T, E=()> Future<T, E>
Dec 02 14:44:42.132 INFO [stderr]     |         ^
Dec 02 14:44:42.132 INFO [stderr]     |
Dec 02 14:44:42.132 INFO [stderr]     = note: #[warn(invalid_type_param_default)] on by default
Dec 02 14:44:42.132 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 02 14:44:42.132 INFO [stderr]     = note: for more information, see issue #36887 <https://github.com/rust-lang/rust/issues/36887>
Dec 02 14:44:42.132 INFO [stderr] 
Dec 02 14:44:42.217 INFO [stderr] warning: unused variable: `cont`
Dec 02 14:44:42.222 INFO [stderr]   --> src/lib.rs:46:29
Dec 02 14:44:42.222 INFO [stderr]    |
Dec 02 14:44:42.223 INFO [stderr] 46 |             Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.")
Dec 02 14:44:42.223 INFO [stderr]    |                             ^^^^ help: consider using `_cont` instead
Dec 02 14:44:42.223 INFO [stderr]    |
Dec 02 14:44:42.223 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 02 14:44:42.223 INFO [stderr] 
Dec 02 14:44:42.223 INFO [stderr] warning: unused variable: `cont`
Dec 02 14:44:42.223 INFO [stderr]   --> src/lib.rs:54:29
Dec 02 14:44:42.223 INFO [stderr]    |
Dec 02 14:44:42.223 INFO [stderr] 54 |             Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.")
Dec 02 14:44:42.223 INFO [stderr]    |                             ^^^^ help: consider using `_cont` instead
Dec 02 14:44:42.223 INFO [stderr] 
Dec 02 14:44:42.247 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:42.248 INFO [stderr]    --> src/lib.rs:192:48
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr] 192 |         POOL.lock().unwrap().execute(move || { tx.send(f()); });
Dec 02 14:44:42.248 INFO [stderr]     |                                                ^^^^^^^^^^^^^
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 02 14:44:42.248 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:42.248 INFO [stderr] 
Dec 02 14:44:42.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:42.248 INFO [stderr]    --> src/lib.rs:274:30
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr] 274 |                 Ok(val) => { tx.send(f(val)); },
Dec 02 14:44:42.248 INFO [stderr]     |                              ^^^^^^^^^^^^^^^^
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:42.248 INFO [stderr] 
Dec 02 14:44:42.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:42.248 INFO [stderr]    --> src/lib.rs:275:31
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr] 275 |                 Err(err) => { tx.send(Async::Err(err)); }
Dec 02 14:44:42.248 INFO [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:42.248 INFO [stderr] 
Dec 02 14:44:42.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:42.248 INFO [stderr]    --> src/lib.rs:305:30
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr] 305 |                 Ok(val) => { tx.send(Async::Ok(f(val))); },
Dec 02 14:44:42.248 INFO [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:42.248 INFO [stderr] 
Dec 02 14:44:42.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:42.248 INFO [stderr]    --> src/lib.rs:306:31
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr] 306 |                 Err(err) => { tx.send(Async::Err(err)); }
Dec 02 14:44:42.248 INFO [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:42.248 INFO [stderr] 
Dec 02 14:44:42.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:42.248 INFO [stderr]    --> src/lib.rs:338:9
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr] 338 |         tx.send(Async::Ok(val));
Dec 02 14:44:42.248 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:42.248 INFO [stderr] 
Dec 02 14:44:42.248 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:42.248 INFO [stderr]    --> src/lib.rs:354:9
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr] 354 |         tx.send(Async::Err(err));
Dec 02 14:44:42.248 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:44:42.248 INFO [stderr]     |
Dec 02 14:44:42.248 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:42.248 INFO [stderr] 
Dec 02 14:44:42.447 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.41s
Dec 02 14:44:42.447 INFO [stderr] su: No module specific data is present
Dec 02 14:44:42.951 INFO running `"docker" "inspect" "54761d6bcab65759f2aa0d44e4c617fb1e644ede7e87a20c762e96d54e965a5a"`
Dec 02 14:44:43.178 INFO running `"docker" "rm" "-f" "54761d6bcab65759f2aa0d44e4c617fb1e644ede7e87a20c762e96d54e965a5a"`
Dec 02 14:44:43.479 INFO [stdout] 54761d6bcab65759f2aa0d44e4c617fb1e644ede7e87a20c762e96d54e965a5a
Dec 02 14:44:43.492 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 14:44:43.901 INFO [stdout] 9eaeab639ab83bd1ae06cc305b0814c70a6c41a6070a978be81a56b6c88486d4
Dec 02 14:44:43.903 INFO running `"docker" "start" "-a" "9eaeab639ab83bd1ae06cc305b0814c70a6c41a6070a978be81a56b6c88486d4"`
Dec 02 14:44:45.797 INFO [stderr] usermod: no changes
Dec 02 14:44:45.873 INFO [stderr]    Compiling tangle v0.4.0 (/source)
Dec 02 14:44:46.567 INFO [stderr] warning: unused import: `std::thread`
Dec 02 14:44:46.567 INFO [stderr]  --> src/lib.rs:7:5
Dec 02 14:44:46.567 INFO [stderr]   |
Dec 02 14:44:46.567 INFO [stderr] 7 | use std::thread;
Dec 02 14:44:46.567 INFO [stderr]   |     ^^^^^^^^^^^
Dec 02 14:44:46.567 INFO [stderr]   |
Dec 02 14:44:46.567 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 02 14:44:46.567 INFO [stderr] 
Dec 02 14:44:46.567 INFO [stderr] warning: unused import: `std::convert`
Dec 02 14:44:46.567 INFO [stderr]   --> src/lib.rs:10:5
Dec 02 14:44:46.567 INFO [stderr]    |
Dec 02 14:44:46.567 INFO [stderr] 10 | use std::convert;
Dec 02 14:44:46.567 INFO [stderr]    |     ^^^^^^^^^^^^
Dec 02 14:44:46.567 INFO [stderr] 
Dec 02 14:44:46.567 INFO [stderr] warning: unused imports: `Receiver`, `Sender`
Dec 02 14:44:46.567 INFO [stderr]    --> src/lib.rs:368:36
Dec 02 14:44:46.567 INFO [stderr]     |
Dec 02 14:44:46.567 INFO [stderr] 368 |     use std::sync::mpsc::{channel, Receiver, Sender};
Dec 02 14:44:46.567 INFO [stderr]     |                                    ^^^^^^^^  ^^^^^^
Dec 02 14:44:46.567 INFO [stderr] 
Dec 02 14:44:46.575 INFO [stderr] warning: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions.
Dec 02 14:44:46.575 INFO [stderr]    --> src/lib.rs:178:9
Dec 02 14:44:46.575 INFO [stderr]     |
Dec 02 14:44:46.575 INFO [stderr] 178 | impl<T, E=()> Future<T, E>
Dec 02 14:44:46.575 INFO [stderr]     |         ^
Dec 02 14:44:46.575 INFO [stderr]     |
Dec 02 14:44:46.575 INFO [stderr]     = note: #[warn(invalid_type_param_default)] on by default
Dec 02 14:44:46.575 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 02 14:44:46.575 INFO [stderr]     = note: for more information, see issue #36887 <https://github.com/rust-lang/rust/issues/36887>
Dec 02 14:44:46.575 INFO [stderr] 
Dec 02 14:44:46.728 INFO [stderr] warning: unused variable: `v`
Dec 02 14:44:46.728 INFO [stderr]    --> src/lib.rs:386:17
Dec 02 14:44:46.728 INFO [stderr]     |
Dec 02 14:44:46.728 INFO [stderr] 386 |             let v = async!(v);
Dec 02 14:44:46.728 INFO [stderr]     |                 ^ help: consider using `_v` instead
Dec 02 14:44:46.728 INFO [stderr]     |
Dec 02 14:44:46.728 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 02 14:44:46.728 INFO [stderr] 
Dec 02 14:44:46.728 INFO [stderr] warning: unused variable: `err`
Dec 02 14:44:46.728 INFO [stderr]    --> src/lib.rs:429:17
Dec 02 14:44:46.728 INFO [stderr]     |
Dec 02 14:44:46.728 INFO [stderr] 429 |             Err(err) => panic!("Unexpected case.")
Dec 02 14:44:46.728 INFO [stderr]     |                 ^^^ help: consider using `_err` instead
Dec 02 14:44:46.728 INFO [stderr] 
Dec 02 14:44:46.728 INFO [stderr] warning: unused variable: `err`
Dec 02 14:44:46.728 INFO [stderr]    --> src/lib.rs:478:17
Dec 02 14:44:46.728 INFO [stderr]     |
Dec 02 14:44:46.728 INFO [stderr] 478 |             Err(err) => panic!("Unexpected value")
Dec 02 14:44:46.728 INFO [stderr]     |                 ^^^ help: consider using `_err` instead
Dec 02 14:44:46.728 INFO [stderr] 
Dec 02 14:44:46.728 INFO [stderr] warning: unused variable: `err`
Dec 02 14:44:46.728 INFO [stderr]    --> src/lib.rs:488:17
Dec 02 14:44:46.728 INFO [stderr]     |
Dec 02 14:44:46.728 INFO [stderr] 488 |             Err(err) => panic!("Unexpected value")
Dec 02 14:44:46.728 INFO [stderr]     |                 ^^^ help: consider using `_err` instead
Dec 02 14:44:46.728 INFO [stderr] 
Dec 02 14:44:46.728 INFO [stderr] warning: unused variable: `n`
Dec 02 14:44:46.728 INFO [stderr]    --> src/lib.rs:496:51
Dec 02 14:44:46.728 INFO [stderr]     |
Dec 02 14:44:46.728 INFO [stderr] 496 |         let curr: Future<usize> = count.and_then(|n| {
Dec 02 14:44:46.728 INFO [stderr]     |                                                   ^ help: consider using `_n` instead
Dec 02 14:44:46.728 INFO [stderr] 
Dec 02 14:44:46.728 INFO [stderr] warning: unused variable: `err`
Dec 02 14:44:46.728 INFO [stderr]    --> src/lib.rs:504:17
Dec 02 14:44:46.728 INFO [stderr]     |
Dec 02 14:44:46.728 INFO [stderr] 504 |             Err(err) => panic!("Unexpected value")
Dec 02 14:44:46.728 INFO [stderr]     |                 ^^^ help: consider using `_err` instead
Dec 02 14:44:46.728 INFO [stderr] 
Dec 02 14:44:46.728 INFO [stderr] warning: unused variable: `cont`
Dec 02 14:44:46.728 INFO [stderr]   --> src/lib.rs:46:29
Dec 02 14:44:46.728 INFO [stderr]    |
Dec 02 14:44:46.728 INFO [stderr] 46 |             Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.")
Dec 02 14:44:46.728 INFO [stderr]    |                             ^^^^ help: consider using `_cont` instead
Dec 02 14:44:46.728 INFO [stderr] 
Dec 02 14:44:46.728 INFO [stderr] warning: unused variable: `cont`
Dec 02 14:44:46.728 INFO [stderr]   --> src/lib.rs:54:29
Dec 02 14:44:46.728 INFO [stderr]    |
Dec 02 14:44:46.728 INFO [stderr] 54 |             Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.")
Dec 02 14:44:46.728 INFO [stderr]    |                             ^^^^ help: consider using `_cont` instead
Dec 02 14:44:46.728 INFO [stderr] 
Dec 02 14:44:46.783 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:46.783 INFO [stderr]    --> src/lib.rs:192:48
Dec 02 14:44:46.783 INFO [stderr]     |
Dec 02 14:44:46.783 INFO [stderr] 192 |         POOL.lock().unwrap().execute(move || { tx.send(f()); });
Dec 02 14:44:46.783 INFO [stderr]     |                                                ^^^^^^^^^^^^^
Dec 02 14:44:46.783 INFO [stderr]     |
Dec 02 14:44:46.783 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 02 14:44:46.783 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:46.783 INFO [stderr] 
Dec 02 14:44:46.784 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:46.784 INFO [stderr]    --> src/lib.rs:274:30
Dec 02 14:44:46.784 INFO [stderr]     |
Dec 02 14:44:46.784 INFO [stderr] 274 |                 Ok(val) => { tx.send(f(val)); },
Dec 02 14:44:46.784 INFO [stderr]     |                              ^^^^^^^^^^^^^^^^
Dec 02 14:44:46.784 INFO [stderr]     |
Dec 02 14:44:46.784 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:46.784 INFO [stderr] 
Dec 02 14:44:46.784 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:46.784 INFO [stderr]    --> src/lib.rs:275:31
Dec 02 14:44:46.784 INFO [stderr]     |
Dec 02 14:44:46.784 INFO [stderr] 275 |                 Err(err) => { tx.send(Async::Err(err)); }
Dec 02 14:44:46.784 INFO [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:44:46.784 INFO [stderr]     |
Dec 02 14:44:46.784 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:46.784 INFO [stderr] 
Dec 02 14:44:46.784 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:46.784 INFO [stderr]    --> src/lib.rs:305:30
Dec 02 14:44:46.784 INFO [stderr]     |
Dec 02 14:44:46.784 INFO [stderr] 305 |                 Ok(val) => { tx.send(Async::Ok(f(val))); },
Dec 02 14:44:46.784 INFO [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:44:46.784 INFO [stderr]     |
Dec 02 14:44:46.784 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:46.784 INFO [stderr] 
Dec 02 14:44:46.786 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:46.786 INFO [stderr]    --> src/lib.rs:306:31
Dec 02 14:44:46.786 INFO [stderr]     |
Dec 02 14:44:46.786 INFO [stderr] 306 |                 Err(err) => { tx.send(Async::Err(err)); }
Dec 02 14:44:46.786 INFO [stderr]     |                               ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:44:46.786 INFO [stderr]     |
Dec 02 14:44:46.786 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:46.786 INFO [stderr] 
Dec 02 14:44:46.786 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:46.786 INFO [stderr]    --> src/lib.rs:338:9
Dec 02 14:44:46.786 INFO [stderr]     |
Dec 02 14:44:46.786 INFO [stderr] 338 |         tx.send(Async::Ok(val));
Dec 02 14:44:46.786 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:44:46.786 INFO [stderr]     |
Dec 02 14:44:46.786 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:46.786 INFO [stderr] 
Dec 02 14:44:46.786 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:46.786 INFO [stderr]    --> src/lib.rs:354:9
Dec 02 14:44:46.786 INFO [stderr]     |
Dec 02 14:44:46.786 INFO [stderr] 354 |         tx.send(Async::Err(err));
Dec 02 14:44:46.786 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 14:44:46.786 INFO [stderr]     |
Dec 02 14:44:46.786 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:46.786 INFO [stderr] 
Dec 02 14:44:46.787 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:46.787 INFO [stderr]    --> src/lib.rs:425:9
Dec 02 14:44:46.787 INFO [stderr]     |
Dec 02 14:44:46.787 INFO [stderr] 425 |         tx.send(123);
Dec 02 14:44:46.787 INFO [stderr]     |         ^^^^^^^^^^^^^
Dec 02 14:44:46.787 INFO [stderr]     |
Dec 02 14:44:46.787 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:46.787 INFO [stderr] 
Dec 02 14:44:46.787 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 02 14:44:46.787 INFO [stderr]    --> src/lib.rs:447:9
Dec 02 14:44:46.787 INFO [stderr]     |
Dec 02 14:44:46.787 INFO [stderr] 447 |         tx.send(555);
Dec 02 14:44:46.787 INFO [stderr]     |         ^^^^^^^^^^^^^
Dec 02 14:44:46.787 INFO [stderr]     |
Dec 02 14:44:46.787 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 02 14:44:46.787 INFO [stderr] 
Dec 02 14:44:48.758 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.93s
Dec 02 14:44:48.761 INFO [stderr] su: No module specific data is present
Dec 02 14:44:49.423 INFO running `"docker" "inspect" "9eaeab639ab83bd1ae06cc305b0814c70a6c41a6070a978be81a56b6c88486d4"`
Dec 02 14:44:49.786 INFO running `"docker" "rm" "-f" "9eaeab639ab83bd1ae06cc305b0814c70a6c41a6070a978be81a56b6c88486d4"`
Dec 02 14:44:50.027 INFO [stdout] 9eaeab639ab83bd1ae06cc305b0814c70a6c41a6070a978be81a56b6c88486d4
Dec 02 14:44:50.033 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-1/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 14:44:50.495 INFO [stdout] d5750e32e7da719fc8b42f69e61c7214ab3e680ddb230a97b6ae116301e3ce8a
Dec 02 14:44:50.497 INFO running `"docker" "start" "-a" "d5750e32e7da719fc8b42f69e61c7214ab3e680ddb230a97b6ae116301e3ce8a"`
Dec 02 14:44:52.156 INFO [stderr] usermod: no changes
Dec 02 14:44:52.223 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
Dec 02 14:44:52.223 INFO [stderr]      Running /target/debug/deps/tangle-e5b1267b8075260d
Dec 02 14:44:52.226 INFO [stdout] 
Dec 02 14:44:52.226 INFO [stdout] running 11 tests
Dec 02 14:44:52.226 INFO [stdout] test tests::async_map_err ... ok
Dec 02 14:44:52.233 INFO [stdout] test tests::resolve_from_value ... ok
Dec 02 14:44:52.233 INFO [stdout] test tests::map_promise ... ok
Dec 02 14:44:52.233 INFO [stdout] test tests::from_chan1 ... ok
Dec 02 14:44:52.235 INFO [stdout] test tests::async_macro ... ok
Dec 02 14:44:52.235 INFO [stdout] test tests::async_map ... ok
Dec 02 14:44:52.235 INFO [stdout] test tests::async_macro_err ... ok
Dec 02 14:44:52.235 INFO [stdout] test tests::to_future_macro ... ok
Dec 02 14:44:52.235 INFO [stdout] test tests::create_channel ... ok
Dec 02 14:44:52.327 INFO [stdout] test tests::async_map_fail ... ok
Dec 02 14:44:52.390 INFO [stdout] test tests::test_async ... ok
Dec 02 14:44:52.390 INFO [stdout] 
Dec 02 14:44:52.390 INFO [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 02 14:44:52.390 INFO [stdout] 
Dec 02 14:44:52.395 INFO [stderr]    Doc-tests tangle
Dec 02 14:44:53.523 INFO [stdout] 
Dec 02 14:44:53.523 INFO [stdout] running 7 tests
Dec 02 14:45:04.136 INFO [stdout] test src/lib.rs - Future<T, E>::err (line 346) ... ok
Dec 02 14:45:04.423 INFO [stdout] test src/lib.rs - Future<T, E>::unit (line 330) ... ok
Dec 02 14:45:05.123 INFO [stdout] test src/lib.rs - Future<T, E>::new (line 182) ... ok
Dec 02 14:45:05.355 INFO [stdout] test src/lib.rs - Promise<T, E>::new (line 145) ... ok
Dec 02 14:45:05.710 INFO [stdout] test src/lib.rs - Future<T, E>::map (line 285) ... ok
Dec 02 14:45:05.984 INFO [stdout] test src/lib.rs - Future<T, E>::and_then (line 254) ... ok
Dec 02 14:45:05.993 INFO [stdout] test src/lib.rs - Future<T, E>::from_channel (line 226) ... ok
Dec 02 14:45:05.993 INFO [stdout] 
Dec 02 14:45:05.993 INFO [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 02 14:45:05.993 INFO [stdout] 
Dec 02 14:45:06.012 INFO [stderr] su: No module specific data is present
Dec 02 14:45:06.683 INFO running `"docker" "inspect" "d5750e32e7da719fc8b42f69e61c7214ab3e680ddb230a97b6ae116301e3ce8a"`
Dec 02 14:45:06.915 INFO running `"docker" "rm" "-f" "d5750e32e7da719fc8b42f69e61c7214ab3e680ddb230a97b6ae116301e3ce8a"`
Dec 02 14:45:07.323 INFO [stdout] d5750e32e7da719fc8b42f69e61c7214ab3e680ddb230a97b6ae116301e3ce8a
