[INFO] fetching crate tangle 0.4.0... [INFO] testing tangle-0.4.0 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031 [INFO] extracting crate tangle 0.4.0 into /workspace/builds/worker-13/source [INFO] validating manifest of crates.io crate tangle 0.4.0 on toolchain 722e1797249a965b6335aebd65d777f917e498f1 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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-13/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 555dae7136f7842beec781e4782ca08e8f78f2572f051ad0afdd032f17e5dc12 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "555dae7136f7842beec781e4782ca08e8f78f2572f051ad0afdd032f17e5dc12", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "555dae7136f7842beec781e4782ca08e8f78f2572f051ad0afdd032f17e5dc12", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "555dae7136f7842beec781e4782ca08e8f78f2572f051ad0afdd032f17e5dc12", kill_on_drop: false }` [INFO] [stdout] 555dae7136f7842beec781e4782ca08e8f78f2572f051ad0afdd032f17e5dc12 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 66773c2a9e60b483f6d5329104e645af4f97aa26ae51279501cac336c25a32f3 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "66773c2a9e60b483f6d5329104e645af4f97aa26ae51279501cac336c25a32f3", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.107 [INFO] [stderr] Compiling lazy_static v0.1.16 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling num_cpus v0.2.13 [INFO] [stderr] Compiling threadpool v1.8.1 [INFO] [stderr] Compiling tangle v0.4.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> src/lib.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::convert` [INFO] [stdout] --> src/lib.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | use std::convert; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred [INFO] [stdout] --> src/lib.rs:21:1 [INFO] [stdout] | [INFO] [stdout] 21 | / lazy_static! { [INFO] [stdout] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stdout] 23 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] = note: this warning originates in the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred [INFO] [stdout] --> src/lib.rs:21:1 [INFO] [stdout] | [INFO] [stdout] 21 | / lazy_static! { [INFO] [stdout] 22 | | static ref POOL: Mutex = Mutex::new(ThreadPool::new(num_cpus::get())); [INFO] [stdout] 23 | | } [INFO] [stdout] | |_^ [INFO] [stdout] | [INFO] [stdout] = note: this warning originates in the macro `lazy_static` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions [INFO] [stdout] --> src/lib.rs:178:9 [INFO] [stdout] | [INFO] [stdout] 178 | impl Future [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[deny(invalid_type_param_default)]` on by default [INFO] [stdout] = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release! [INFO] [stdout] = note: for more information, see issue #36887 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cont` [INFO] [stdout] --> src/lib.rs:46:29 [INFO] [stdout] | [INFO] [stdout] 46 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `cont` [INFO] [stdout] --> src/lib.rs:54:29 [INFO] [stdout] | [INFO] [stdout] 54 | Async::Continue(cont) => panic!("Cannot map on `Async::Continue`. Use `map_future` for that.") [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_cont` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `chan` [INFO] [stdout] --> src/lib.rs:136:5 [INFO] [stdout] | [INFO] [stdout] 136 | chan: Sender>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `state` [INFO] [stdout] --> src/lib.rs:138:5 [INFO] [stdout] | [INFO] [stdout] 138 | state: PromiseState [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `read` [INFO] [stdout] --> src/lib.rs:175:5 [INFO] [stdout] | [INFO] [stdout] 175 | read: bool [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:192:48 [INFO] [stdout] | [INFO] [stdout] 192 | POOL.lock().unwrap().execute(move || { tx.send(f()); }); [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:274:30 [INFO] [stdout] | [INFO] [stdout] 274 | Ok(val) => { tx.send(f(val)); }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `tangle` due to 2 previous errors; 16 warnings emitted [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:275:31 [INFO] [stdout] | [INFO] [stdout] 275 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:305:30 [INFO] [stdout] | [INFO] [stdout] 305 | Ok(val) => { tx.send(Async::Ok(f(val))); }, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:306:31 [INFO] [stdout] | [INFO] [stdout] 306 | Err(err) => { tx.send(Async::Err(err)); } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:338:9 [INFO] [stdout] | [INFO] [stdout] 338 | tx.send(Async::Ok(val)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:354:9 [INFO] [stdout] | [INFO] [stdout] 354 | tx.send(Async::Err(err)); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 16 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "66773c2a9e60b483f6d5329104e645af4f97aa26ae51279501cac336c25a32f3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "66773c2a9e60b483f6d5329104e645af4f97aa26ae51279501cac336c25a32f3", kill_on_drop: false }` [INFO] [stdout] 66773c2a9e60b483f6d5329104e645af4f97aa26ae51279501cac336c25a32f3