[INFO] fetching crate lookahead 0.1.0... [INFO] testing lookahead-0.1.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799 [INFO] extracting crate lookahead 0.1.0 into /workspace/builds/worker-2/source [INFO] validating manifest of crates.io crate lookahead 0.1.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate lookahead 0.1.0 [INFO] finished tweaking crates.io crate lookahead 0.1.0 [INFO] tweaked toml for crates.io crate lookahead 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 783b4e2cd8f5e0e38686fcbefdb6000354c0579d53bbf2e2eeecc43e4acea539 [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" "783b4e2cd8f5e0e38686fcbefdb6000354c0579d53bbf2e2eeecc43e4acea539", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "783b4e2cd8f5e0e38686fcbefdb6000354c0579d53bbf2e2eeecc43e4acea539", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "783b4e2cd8f5e0e38686fcbefdb6000354c0579d53bbf2e2eeecc43e4acea539", kill_on_drop: false }` [INFO] [stdout] 783b4e2cd8f5e0e38686fcbefdb6000354c0579d53bbf2e2eeecc43e4acea539 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--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] 0769c0e04142c691eef7b9217ad4dba801ae2e425216ce6754f0eaa64c3cdc5e [INFO] running `Command { std: "docker" "start" "-a" "0769c0e04142c691eef7b9217ad4dba801ae2e425216ce6754f0eaa64c3cdc5e", kill_on_drop: false }` [INFO] [stderr] Compiling lookahead v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.41s [INFO] running `Command { std: "docker" "inspect" "0769c0e04142c691eef7b9217ad4dba801ae2e425216ce6754f0eaa64c3cdc5e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0769c0e04142c691eef7b9217ad4dba801ae2e425216ce6754f0eaa64c3cdc5e", kill_on_drop: false }` [INFO] [stdout] 0769c0e04142c691eef7b9217ad4dba801ae2e425216ce6754f0eaa64c3cdc5e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--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] f85a4b30e6a77aef27a5356a2db5b1ad6c4eb88e9e36dcf053330e4e2f749e10 [INFO] running `Command { std: "docker" "start" "-a" "f85a4b30e6a77aef27a5356a2db5b1ad6c4eb88e9e36dcf053330e4e2f749e10", kill_on_drop: false }` [INFO] [stderr] Compiling lookahead v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021 [INFO] [stdout] --> src/lib.rs:63:28 [INFO] [stdout] | [INFO] [stdout] 63 | let inner = [1, 2].into_iter(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(array_into_iter)]` on by default [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 63 | let inner = [1, 2].iter(); [INFO] [stdout] | ~~~~ [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 63 | let inner = IntoIterator::into_iter([1, 2]); [INFO] [stdout] | ++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021 [INFO] [stdout] --> src/lib.rs:70:28 [INFO] [stdout] | [INFO] [stdout] 70 | let inner = [1, 2].into_iter(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 70 | let inner = [1, 2].iter(); [INFO] [stdout] | ~~~~ [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 70 | let inner = IntoIterator::into_iter([1, 2]); [INFO] [stdout] | ++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021 [INFO] [stdout] --> src/lib.rs:77:28 [INFO] [stdout] | [INFO] [stdout] 77 | let inner = [1, 2].into_iter(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 77 | let inner = [1, 2].iter(); [INFO] [stdout] | ~~~~ [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 77 | let inner = IntoIterator::into_iter([1, 2]); [INFO] [stdout] | ++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021 [INFO] [stdout] --> src/lib.rs:84:28 [INFO] [stdout] | [INFO] [stdout] 84 | let inner = [1, 2].into_iter(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 84 | let inner = [1, 2].iter(); [INFO] [stdout] | ~~~~ [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 84 | let inner = IntoIterator::into_iter([1, 2]); [INFO] [stdout] | ++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021 [INFO] [stdout] --> src/lib.rs:92:28 [INFO] [stdout] | [INFO] [stdout] 92 | let inner = [1, 2].into_iter(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] | [INFO] [stdout] 92 | let inner = [1, 2].iter(); [INFO] [stdout] | ~~~~ [INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stdout] | [INFO] [stdout] 92 | let inner = IntoIterator::into_iter([1, 2]); [INFO] [stdout] | ++++++++++++++++++++++++ ~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 1.05s [INFO] running `Command { std: "docker" "inspect" "f85a4b30e6a77aef27a5356a2db5b1ad6c4eb88e9e36dcf053330e4e2f749e10", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f85a4b30e6a77aef27a5356a2db5b1ad6c4eb88e9e36dcf053330e4e2f749e10", kill_on_drop: false }` [INFO] [stdout] f85a4b30e6a77aef27a5356a2db5b1ad6c4eb88e9e36dcf053330e4e2f749e10 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 08928c69241c1d62b89e007f8df6c4bc89184f63622fa856b87785ce245e525b [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" "08928c69241c1d62b89e007f8df6c4bc89184f63622fa856b87785ce245e525b", kill_on_drop: false }` [INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021 [INFO] [stdout] [INFO] [stderr] --> src/lib.rs:63:28 [INFO] [stdout] running 5 tests [INFO] [stderr] | [INFO] [stdout] test tests::next ... ok [INFO] [stderr] 63 | let inner = [1, 2].into_iter(); [INFO] [stdout] test tests::two ... ok [INFO] [stderr] | ^^^^^^^^^ [INFO] [stdout] test tests::one ... ok [INFO] [stderr] | [INFO] [stdout] test tests::zero ... ok [INFO] [stderr] = note: `#[warn(array_into_iter)]` on by default [INFO] [stdout] test tests::size_hint ... ok [INFO] [stderr] = warning: this changes meaning in Rust 2021 [INFO] [stdout] [INFO] [stderr] = note: for more information, see [INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stdout] [INFO] [stderr] | [INFO] [stderr] 63 | let inner = [1, 2].iter(); [INFO] [stderr] | ~~~~ [INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stderr] | [INFO] [stderr] 63 | let inner = IntoIterator::into_iter([1, 2]); [INFO] [stderr] | ++++++++++++++++++++++++ ~ [INFO] [stderr] [INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021 [INFO] [stderr] --> src/lib.rs:70:28 [INFO] [stderr] | [INFO] [stderr] 70 | let inner = [1, 2].into_iter(); [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this changes meaning in Rust 2021 [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stderr] | [INFO] [stderr] 70 | let inner = [1, 2].iter(); [INFO] [stderr] | ~~~~ [INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stderr] | [INFO] [stderr] 70 | let inner = IntoIterator::into_iter([1, 2]); [INFO] [stderr] | ++++++++++++++++++++++++ ~ [INFO] [stderr] [INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021 [INFO] [stderr] --> src/lib.rs:77:28 [INFO] [stderr] | [INFO] [stderr] 77 | let inner = [1, 2].into_iter(); [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this changes meaning in Rust 2021 [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stderr] | [INFO] [stderr] 77 | let inner = [1, 2].iter(); [INFO] [stderr] | ~~~~ [INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stderr] | [INFO] [stderr] 77 | let inner = IntoIterator::into_iter([1, 2]); [INFO] [stderr] | ++++++++++++++++++++++++ ~ [INFO] [stderr] [INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021 [INFO] [stderr] --> src/lib.rs:84:28 [INFO] [stderr] | [INFO] [stderr] 84 | let inner = [1, 2].into_iter(); [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this changes meaning in Rust 2021 [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stderr] | [INFO] [stderr] 84 | let inner = [1, 2].iter(); [INFO] [stderr] | ~~~~ [INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stderr] | [INFO] [stderr] 84 | let inner = IntoIterator::into_iter([1, 2]); [INFO] [stderr] | ++++++++++++++++++++++++ ~ [INFO] [stderr] [INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021 [INFO] [stderr] --> src/lib.rs:92:28 [INFO] [stderr] | [INFO] [stderr] 92 | let inner = [1, 2].into_iter(); [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = warning: this changes meaning in Rust 2021 [INFO] [stderr] = note: for more information, see [INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity [INFO] [stderr] | [INFO] [stderr] 92 | let inner = [1, 2].iter(); [INFO] [stderr] | ~~~~ [INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value [INFO] [stderr] | [INFO] [stderr] 92 | let inner = IntoIterator::into_iter([1, 2]); [INFO] [stderr] | ++++++++++++++++++++++++ ~ [INFO] [stderr] [INFO] [stderr] warning: `lookahead` (lib test) generated 5 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/lookahead-908f6972766b983f) [INFO] [stderr] Doc-tests lookahead [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "08928c69241c1d62b89e007f8df6c4bc89184f63622fa856b87785ce245e525b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "08928c69241c1d62b89e007f8df6c4bc89184f63622fa856b87785ce245e525b", kill_on_drop: false }` [INFO] [stdout] 08928c69241c1d62b89e007f8df6c4bc89184f63622fa856b87785ce245e525b