[INFO] fetching crate rats 0.0.1... [INFO] checking rats-0.0.1 against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363 [INFO] extracting crate rats 0.0.1 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate rats 0.0.1 on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate rats 0.0.1 [INFO] finished tweaking crates.io crate rats 0.0.1 [INFO] tweaked toml for crates.io crate rats 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 948c246952f598eeb6ab906c19f626629159bc96be5c7c603db13295d123e718 [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" "948c246952f598eeb6ab906c19f626629159bc96be5c7c603db13295d123e718", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "948c246952f598eeb6ab906c19f626629159bc96be5c7c603db13295d123e718", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "948c246952f598eeb6ab906c19f626629159bc96be5c7c603db13295d123e718", kill_on_drop: false }` [INFO] [stdout] 948c246952f598eeb6ab906c19f626629159bc96be5c7c603db13295d123e718 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] fce7c42a0e83d7c2ca5ddd7577fa7f80e3a8e419efe8a060a86836b2a2f870a6 [INFO] running `Command { std: "docker" "start" "-a" "fce7c42a0e83d7c2ca5ddd7577fa7f80e3a8e419efe8a060a86836b2a2f870a6", kill_on_drop: false }` [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking futures-core-preview v0.2.3 [INFO] [stderr] Checking futures-channel-preview v0.2.2 [INFO] [stderr] Checking futures-io-preview v0.2.2 [INFO] [stderr] Checking futures-sink-preview v0.2.2 [INFO] [stderr] Checking futures-util-preview v0.2.2 [INFO] [stderr] Checking futures-executor-preview v0.2.2 [INFO] [stderr] Checking futures-stable-preview v0.2.3 [INFO] [stderr] Checking futures-async-runtime-preview v0.2.3 [INFO] [stderr] Checking futures-preview v0.2.2 [INFO] [stderr] Checking rats v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes [INFO] [stdout] --> src/lib.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(specialization)] [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(incomplete_features)]` on by default [INFO] [stdout] = note: see issue #31844 for more information [INFO] [stdout] = help: consider using `min_specialization` instead, which is more stable and complete [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future::AndThen` [INFO] [stdout] --> src/instances/future.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use futures::future::AndThen; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future::AndThen` [INFO] [stdout] --> src/instances/future.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use futures::future::AndThen; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `applicative::Applicative` [INFO] [stdout] --> src/instances/result.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use applicative::Applicative; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/kind.rs:16:16 [INFO] [stdout] | [INFO] [stdout] 16 | Future(Box + 'f_>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future + 'f_` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future` [INFO] [stdout] --> src/instances/option.rs:77:13 [INFO] [stdout] | [INFO] [stdout] 77 | use futures::future; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/kinds.rs:69:68 [INFO] [stdout] | [INFO] [stdout] 69 | impl<'f_, A: 'f_, B: 'f_> IntoKind<'f_, FutureKind, A, B> for Box> [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `futures::future::FutureResult` [INFO] [stdout] --> src/instances/option.rs:79:13 [INFO] [stdout] | [INFO] [stdout] 79 | use futures::future::FutureResult; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/kinds.rs:159:20 [INFO] [stdout] | [INFO] [stdout] 159 | type Out = Box + 'f_>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future + 'f_` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `applicative::Applicative` [INFO] [stdout] --> src/instances/result.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use applicative::Applicative; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/kinds.rs:160:27 [INFO] [stdout] | [INFO] [stdout] 160 | fn reify(self) -> Box + 'f_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future + 'f_` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/kind.rs:16:16 [INFO] [stdout] | [INFO] [stdout] 16 | Future(Box + 'f_>), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future + 'f_` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/kinds.rs:69:68 [INFO] [stdout] | [INFO] [stdout] 69 | impl<'f_, A: 'f_, B: 'f_> IntoKind<'f_, FutureKind, A, B> for Box> [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/kinds.rs:159:20 [INFO] [stdout] | [INFO] [stdout] 159 | type Out = Box + 'f_>; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future + 'f_` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/kinds.rs:160:27 [INFO] [stdout] | [INFO] [stdout] 160 | fn reify(self) -> Box + 'f_> { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Future + 'f_` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `tool_attributes` has been stable since 1.30.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:4:12 [INFO] [stdout] | [INFO] [stdout] 4 | #![feature(tool_attributes)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `tool_attributes` has been stable since 1.30.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:4:12 [INFO] [stdout] | [INFO] [stdout] 4 | #![feature(tool_attributes)] [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 6.48s [INFO] running `Command { std: "docker" "inspect" "fce7c42a0e83d7c2ca5ddd7577fa7f80e3a8e419efe8a060a86836b2a2f870a6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fce7c42a0e83d7c2ca5ddd7577fa7f80e3a8e419efe8a060a86836b2a2f870a6", kill_on_drop: false }` [INFO] [stdout] fce7c42a0e83d7c2ca5ddd7577fa7f80e3a8e419efe8a060a86836b2a2f870a6