[INFO] crate tangle 0.4.0 is already in cache [INFO] testing tangle-0.4.0 against beta-2020-06-03 for beta-1.45-1 [INFO] extracting crate tangle 0.4.0 into /workspace/builds/worker-8/source [INFO] validating manifest of crates.io crate tangle 0.4.0 on toolchain beta-2020-06-03 [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate tangle 0.4.0 [INFO] finished tweaking crates.io crate tangle 0.4.0 [INFO] tweaked toml for crates.io crate tangle 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 79088ae198969ee4f8214f782fb218a563e53202fbf9fa5cf6799de46eafb6ec [INFO] running `"docker" "start" "-a" "79088ae198969ee4f8214f782fb218a563e53202fbf9fa5cf6799de46eafb6ec"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling num_cpus v0.2.13 [INFO] [stderr] Compiling tangle v0.4.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/lib.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert` [INFO] [stderr] --> src/lib.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::convert; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/lib.rs:21:1 [INFO] [stderr] | [INFO] [stderr] 21 | / lazy_static! { [INFO] [stderr] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stderr] 23 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/lib.rs:21:1 [INFO] [stderr] | [INFO] [stderr] 21 | / lazy_static! { [INFO] [stderr] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stderr] 23 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions. [INFO] [stderr] --> src/lib.rs:178:9 [INFO] [stderr] | [INFO] [stderr] 178 | impl Future [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(invalid_type_param_default)]` on by default [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! [INFO] [stderr] = note: for more information, see issue #36887 [INFO] [stderr] [INFO] [stderr] warning: unused variable: `cont` [INFO] [stderr] --> src/lib.rs:46:29 [INFO] [stderr] | [INFO] [stderr] 46 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `cont` [INFO] [stderr] --> src/lib.rs:54:29 [INFO] [stderr] | [INFO] [stderr] 54 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:192:48 [INFO] [stderr] | [INFO] [stderr] 192 | POOL.lock().unwrap().execute(move || { tx.send(f()); }); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:274:30 [INFO] [stderr] | [INFO] [stderr] 274 | Ok(val) => { tx.send(f(val)); }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:275:31 [INFO] [stderr] | [INFO] [stderr] 275 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:305:30 [INFO] [stderr] | [INFO] [stderr] 305 | Ok(val) => { tx.send(Async::Ok(f(val))); }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:306:31 [INFO] [stderr] | [INFO] [stderr] 306 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:338:9 [INFO] [stderr] | [INFO] [stderr] 338 | tx.send(Async::Ok(val)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:354:9 [INFO] [stderr] | [INFO] [stderr] 354 | tx.send(Async::Err(err)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 14 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.76s [INFO] running `"docker" "inspect" "79088ae198969ee4f8214f782fb218a563e53202fbf9fa5cf6799de46eafb6ec"` [INFO] running `"docker" "rm" "-f" "79088ae198969ee4f8214f782fb218a563e53202fbf9fa5cf6799de46eafb6ec"` [INFO] [stdout] 79088ae198969ee4f8214f782fb218a563e53202fbf9fa5cf6799de46eafb6ec [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 8457c0603b5c494a84404db79a31370b1d1aa062facf05e56d09e161cedbc5b3 [INFO] running `"docker" "start" "-a" "8457c0603b5c494a84404db79a31370b1d1aa062facf05e56d09e161cedbc5b3"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling tangle v0.4.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/lib.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert` [INFO] [stderr] --> src/lib.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::convert; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/lib.rs:21:1 [INFO] [stderr] | [INFO] [stderr] 21 | / lazy_static! { [INFO] [stderr] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stderr] 23 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/lib.rs:21:1 [INFO] [stderr] | [INFO] [stderr] 21 | / lazy_static! { [INFO] [stderr] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stderr] 23 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions. [INFO] [stderr] --> src/lib.rs:178:9 [INFO] [stderr] | [INFO] [stderr] 178 | impl Future [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(invalid_type_param_default)]` on by default [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! [INFO] [stderr] = note: for more information, see issue #36887 [INFO] [stderr] [INFO] [stderr] warning: unused variable: `cont` [INFO] [stderr] --> src/lib.rs:46:29 [INFO] [stderr] | [INFO] [stderr] 46 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `cont` [INFO] [stderr] --> src/lib.rs:54:29 [INFO] [stderr] | [INFO] [stderr] 54 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:192:48 [INFO] [stderr] | [INFO] [stderr] 192 | POOL.lock().unwrap().execute(move || { tx.send(f()); }); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:274:30 [INFO] [stderr] | [INFO] [stderr] 274 | Ok(val) => { tx.send(f(val)); }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:275:31 [INFO] [stderr] | [INFO] [stderr] 275 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:305:30 [INFO] [stderr] | [INFO] [stderr] 305 | Ok(val) => { tx.send(Async::Ok(f(val))); }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:306:31 [INFO] [stderr] | [INFO] [stderr] 306 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:338:9 [INFO] [stderr] | [INFO] [stderr] 338 | tx.send(Async::Ok(val)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:354:9 [INFO] [stderr] | [INFO] [stderr] 354 | tx.send(Async::Err(err)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 14 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/lib.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert` [INFO] [stderr] --> src/lib.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::convert; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Receiver`, `Sender` [INFO] [stderr] --> src/lib.rs:368:36 [INFO] [stderr] | [INFO] [stderr] 368 | use std::sync::mpsc::{channel, Receiver, Sender}; [INFO] [stderr] | ^^^^^^^^ ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/lib.rs:21:1 [INFO] [stderr] | [INFO] [stderr] 21 | / lazy_static! { [INFO] [stderr] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stderr] 23 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/lib.rs:21:1 [INFO] [stderr] | [INFO] [stderr] 21 | / lazy_static! { [INFO] [stderr] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stderr] 23 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions. [INFO] [stderr] --> src/lib.rs:178:9 [INFO] [stderr] | [INFO] [stderr] 178 | impl Future [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(invalid_type_param_default)]` on by default [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! [INFO] [stderr] = note: for more information, see issue #36887 [INFO] [stderr] [INFO] [stderr] warning: unused variable: `cont` [INFO] [stderr] --> src/lib.rs:46:29 [INFO] [stderr] | [INFO] [stderr] 46 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `cont` [INFO] [stderr] --> src/lib.rs:54:29 [INFO] [stderr] | [INFO] [stderr] 54 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v` [INFO] [stderr] --> src/lib.rs:386:17 [INFO] [stderr] | [INFO] [stderr] 386 | let v = async!(v); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/lib.rs:429:17 [INFO] [stderr] | [INFO] [stderr] 429 | Err(err) => panic!("Unexpected case.") [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/lib.rs:478:17 [INFO] [stderr] | [INFO] [stderr] 478 | Err(err) => panic!("Unexpected value") [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/lib.rs:488:17 [INFO] [stderr] | [INFO] [stderr] 488 | Err(err) => panic!("Unexpected value") [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `n` [INFO] [stderr] --> src/lib.rs:496:51 [INFO] [stderr] | [INFO] [stderr] 496 | let curr: Future = count.and_then(|n| { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/lib.rs:504:17 [INFO] [stderr] | [INFO] [stderr] 504 | Err(err) => panic!("Unexpected value") [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:192:48 [INFO] [stderr] | [INFO] [stderr] 192 | POOL.lock().unwrap().execute(move || { tx.send(f()); }); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:274:30 [INFO] [stderr] | [INFO] [stderr] 274 | Ok(val) => { tx.send(f(val)); }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:275:31 [INFO] [stderr] | [INFO] [stderr] 275 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:305:30 [INFO] [stderr] | [INFO] [stderr] 305 | Ok(val) => { tx.send(Async::Ok(f(val))); }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:306:31 [INFO] [stderr] | [INFO] [stderr] 306 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:338:9 [INFO] [stderr] | [INFO] [stderr] 338 | tx.send(Async::Ok(val)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:354:9 [INFO] [stderr] | [INFO] [stderr] 354 | tx.send(Async::Err(err)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:425:9 [INFO] [stderr] | [INFO] [stderr] 425 | tx.send(123); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:447:9 [INFO] [stderr] | [INFO] [stderr] 447 | tx.send(555); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 23 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.55s [INFO] running `"docker" "inspect" "8457c0603b5c494a84404db79a31370b1d1aa062facf05e56d09e161cedbc5b3"` [INFO] running `"docker" "rm" "-f" "8457c0603b5c494a84404db79a31370b1d1aa062facf05e56d09e161cedbc5b3"` [INFO] [stdout] 8457c0603b5c494a84404db79a31370b1d1aa062facf05e56d09e161cedbc5b3 [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen"` [INFO] [stdout] 6b94f700ffea4a37e7d190387bb32544faa14b725c1a55f95c5d516a3aab7f59 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "6b94f700ffea4a37e7d190387bb32544faa14b725c1a55f95c5d516a3aab7f59"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/lib.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert` [INFO] [stderr] --> src/lib.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::convert; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> src/lib.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::convert` [INFO] [stderr] --> src/lib.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::convert; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `Receiver`, `Sender` [INFO] [stderr] --> src/lib.rs:368:36 [INFO] [stderr] | [INFO] [stderr] 368 | use std::sync::mpsc::{channel, Receiver, Sender}; [INFO] [stderr] | ^^^^^^^^ ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/lib.rs:21:1 [INFO] [stderr] | [INFO] [stderr] 21 | / lazy_static! { [INFO] [stderr] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stderr] 23 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/lib.rs:21:1 [INFO] [stderr] | [INFO] [stderr] 21 | / lazy_static! { [INFO] [stderr] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stderr] 23 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/lib.rs:21:1 [INFO] [stderr] | [INFO] [stderr] 21 | / lazy_static! { [INFO] [stderr] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stderr] 23 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions. [INFO] [stderr] --> src/lib.rs:178:9 [INFO] [stderr] | [INFO] [stderr] 178 | impl Future [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(invalid_type_param_default)]` on by default [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! [INFO] [stderr] = note: for more information, see issue #36887 [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred [INFO] [stderr] --> src/lib.rs:21:1 [INFO] [stderr] | [INFO] [stderr] 21 | / lazy_static! { [INFO] [stderr] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stderr] 23 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unused variable: `cont` [INFO] [stderr] --> src/lib.rs:46:29 [INFO] [stderr] | [INFO] [stderr] 46 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `cont` [INFO] [stderr] --> src/lib.rs:54:29 [INFO] [stderr] | [INFO] [stderr] 54 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stderr] [INFO] [stderr] warning: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions. [INFO] [stderr] --> src/lib.rs:178:9 [INFO] [stderr] | [INFO] [stderr] 178 | impl Future [INFO] [stderr] | ^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(invalid_type_param_default)]` on by default [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! [INFO] [stderr] = note: for more information, see issue #36887 [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:192:48 [INFO] [stderr] | [INFO] [stderr] 192 | POOL.lock().unwrap().execute(move || { tx.send(f()); }); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `cont` [INFO] [stderr] --> src/lib.rs:46:29 [INFO] [stderr] | [INFO] [stderr] 46 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:274:30 [INFO] [stderr] | [INFO] [stderr] 274 | Ok(val) => { tx.send(f(val)); }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `cont` [INFO] [stderr] --> src/lib.rs:54:29 [INFO] [stderr] | [INFO] [stderr] 54 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:275:31 [INFO] [stderr] | [INFO] [stderr] 275 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `v` [INFO] [stderr] --> src/lib.rs:386:17 [INFO] [stderr] | [INFO] [stderr] 386 | let v = async!(v); [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:305:30 [INFO] [stderr] | [INFO] [stderr] 305 | Ok(val) => { tx.send(Async::Ok(f(val))); }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/lib.rs:429:17 [INFO] [stderr] | [INFO] [stderr] 429 | Err(err) => panic!("Unexpected case.") [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:306:31 [INFO] [stderr] | [INFO] [stderr] 306 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:338:9 [INFO] [stderr] | [INFO] [stderr] 338 | tx.send(Async::Ok(val)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/lib.rs:478:17 [INFO] [stderr] | [INFO] [stderr] 478 | Err(err) => panic!("Unexpected value") [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/lib.rs:488:17 [INFO] [stderr] | [INFO] [stderr] 488 | Err(err) => panic!("Unexpected value") [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:354:9 [INFO] [stderr] | [INFO] [stderr] 354 | tx.send(Async::Err(err)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 14 warnings emitted [INFO] [stderr] [INFO] [stderr] warning: unused variable: `n` [INFO] [stderr] --> src/lib.rs:496:51 [INFO] [stderr] | [INFO] [stderr] 496 | let curr: Future = count.and_then(|n| { [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_n` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `err` [INFO] [stderr] --> src/lib.rs:504:17 [INFO] [stderr] | [INFO] [stderr] 504 | Err(err) => panic!("Unexpected value") [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_err` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:192:48 [INFO] [stderr] | [INFO] [stderr] 192 | POOL.lock().unwrap().execute(move || { tx.send(f()); }); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:274:30 [INFO] [stderr] | [INFO] [stderr] 274 | Ok(val) => { tx.send(f(val)); }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:275:31 [INFO] [stderr] | [INFO] [stderr] 275 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:305:30 [INFO] [stderr] | [INFO] [stderr] 305 | Ok(val) => { tx.send(Async::Ok(f(val))); }, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:306:31 [INFO] [stderr] | [INFO] [stderr] 306 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:338:9 [INFO] [stderr] | [INFO] [stderr] 338 | tx.send(Async::Ok(val)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:354:9 [INFO] [stderr] | [INFO] [stderr] 354 | tx.send(Async::Err(err)); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:425:9 [INFO] [stderr] | [INFO] [stderr] 425 | tx.send(123); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:447:9 [INFO] [stderr] | [INFO] [stderr] 447 | tx.send(555); [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 23 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/tangle-46daef2817a8a78f [INFO] [stdout] [INFO] [stdout] running 11 tests [INFO] [stdout] test tests::async_macro ... ok [INFO] [stdout] test tests::async_map ... ok [INFO] [stdout] test tests::async_macro_err ... ok [INFO] [stdout] test tests::async_map_err ... ok [INFO] [stdout] test tests::create_channel ... ok [INFO] [stdout] test tests::from_chan1 ... ok [INFO] [stdout] test tests::resolve_from_value ... ok [INFO] [stdout] test tests::map_promise ... ok [INFO] [stdout] test tests::to_future_macro ... ok [INFO] [stdout] test tests::test_async ... ok [INFO] [stderr] Doc-tests tangle [INFO] [stdout] test tests::async_map_fail ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] running 7 tests [INFO] [stdout] test src/lib.rs - Future::unit (line 330) ... ok [INFO] [stdout] test src/lib.rs - Promise::new (line 145) ... ok [INFO] [stdout] test src/lib.rs - Future::err (line 346) ... ok [INFO] [stdout] test src/lib.rs - Future::new (line 182) ... ok [INFO] [stdout] test src/lib.rs - Future::from_channel (line 226) ... ok [INFO] [stdout] test src/lib.rs - Future::and_then (line 254) ... ok [INFO] [stdout] test src/lib.rs - Future::map (line 285) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `"docker" "inspect" "6b94f700ffea4a37e7d190387bb32544faa14b725c1a55f95c5d516a3aab7f59"` [INFO] running `"docker" "rm" "-f" "6b94f700ffea4a37e7d190387bb32544faa14b725c1a55f95c5d516a3aab7f59"` [INFO] [stdout] 6b94f700ffea4a37e7d190387bb32544faa14b725c1a55f95c5d516a3aab7f59