[INFO] crate stream_throttle 0.2.1 is already in cache [INFO] extracting crate stream_throttle 0.2.1 into work/ex/clippy-test-run/sources/stable/reg/stream_throttle/0.2.1 [INFO] extracting crate stream_throttle 0.2.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/stream_throttle/0.2.1 [INFO] validating manifest of stream_throttle-0.2.1 on toolchain stable [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of stream_throttle-0.2.1 on toolchain stable+rustflags=-Dclippy::into_iter_on_array [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing stream_throttle-0.2.1 [INFO] finished frobbing stream_throttle-0.2.1 [INFO] frobbed toml for stream_throttle-0.2.1 written to work/ex/clippy-test-run/sources/stable/reg/stream_throttle/0.2.1/Cargo.toml [INFO] started frobbing stream_throttle-0.2.1 [INFO] finished frobbing stream_throttle-0.2.1 [INFO] frobbed toml for stream_throttle-0.2.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/stream_throttle/0.2.1/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] linting stream_throttle-0.2.1 against stable for clippy-test-run [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/stream_throttle/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 54fbde3a41df3a8aa5861e88501b09241be6f71421d21379c2ceb1f3512e1244 [INFO] running `"docker" "start" "-a" "54fbde3a41df3a8aa5861e88501b09241be6f71421d21379c2ceb1f3512e1244"` [INFO] [stderr] Checking stream_throttle v0.2.1 (/opt/crater/workdir) [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/lib.rs:60:1 [INFO] [stderr] | [INFO] [stderr] 60 | #[macro_use] [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused `#[macro_use]` import [INFO] [stderr] --> src/lib.rs:60:1 [INFO] [stderr] | [INFO] [stderr] 60 | #[macro_use] [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: consider using `Option` instead of `Option>` or a custom enum if you need to distinguish all 3 cases [INFO] [stderr] --> src/stream.rs:35:11 [INFO] [stderr] | [INFO] [stderr] 35 | pending: Option + Send>>>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::option_option)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_option [INFO] [stderr] [INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions [INFO] [stderr] --> src/stream.rs:35:11 [INFO] [stderr] | [INFO] [stderr] 35 | pending: Option + Send>>>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::type_complexity)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity [INFO] [stderr] [INFO] [stderr] warning: consider using `Option` instead of `Option>` or a custom enum if you need to distinguish all 3 cases [INFO] [stderr] --> src/stream.rs:35:11 [INFO] [stderr] | [INFO] [stderr] 35 | pending: Option + Send>>>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::option_option)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#option_option [INFO] [stderr] [INFO] [stderr] warning: very complex type used. Consider factoring parts into `type` definitions [INFO] [stderr] --> src/stream.rs:35:11 [INFO] [stderr] | [INFO] [stderr] 35 | pending: Option + Send>>>, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::type_complexity)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#type_complexity [INFO] [stderr] [INFO] [stderr] warning: useless use of `format!` [INFO] [stderr] --> examples/basic.rs:21:26 [INFO] [stderr] | [INFO] [stderr] 21 | .and_then(move |_| Ok(format!("{}", "stream 1"))) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"stream 1".to_string()` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(clippy::useless_format)] on by default [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: useless use of `format!` [INFO] [stderr] --> examples/basic.rs:33:26 [INFO] [stderr] | [INFO] [stderr] 33 | .and_then(move |_| Ok(format!("{}", "stream 2"))) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"stream 2".to_string()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: useless use of `format!` [INFO] [stderr] --> examples/basic.rs:45:26 [INFO] [stderr] | [INFO] [stderr] 45 | .and_then(move |_| Ok(format!("{}", "stream 3"))) [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ help: consider using .to_string(): `"stream 3".to_string()` [INFO] [stderr] | [INFO] [stderr] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format [INFO] [stderr] = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.24s [INFO] running `"docker" "inspect" "54fbde3a41df3a8aa5861e88501b09241be6f71421d21379c2ceb1f3512e1244"` [INFO] running `"docker" "rm" "-f" "54fbde3a41df3a8aa5861e88501b09241be6f71421d21379c2ceb1f3512e1244"` [INFO] [stdout] 54fbde3a41df3a8aa5861e88501b09241be6f71421d21379c2ceb1f3512e1244