[INFO] fetching crate utah2 0.1.1...
[INFO] checking utah2-0.1.1 against master#c9af9c1dc85a55e309345030ff9cb7ea247953fa for pr-151146
[INFO] extracting crate utah2 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate utah2 0.1.1
[INFO] finished tweaking crates.io crate utah2 0.1.1
[INFO] tweaked toml for crates.io crate utah2 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate utah2 0.1.1 on toolchain c9af9c1dc85a55e309345030ff9cb7ea247953fa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9af9c1dc85a55e309345030ff9cb7ea247953fa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9af9c1dc85a55e309345030ff9cb7ea247953fa" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 49 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.8.2 (available: v0.14.0)
[INFO] [stderr]       Adding ndarray v0.13.1 (available: v0.17.2)
[INFO] [stderr]       Adding ndarray-rand v0.11.0 (available: v0.16.0)
[INFO] [stderr]       Adding num v0.2.1 (available: v0.4.3)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c9af9c1dc85a55e309345030ff9cb7ea247953fa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ndarray-rand v0.11.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+c9af9c1dc85a55e309345030ff9cb7ea247953fa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 709d24caf9a7d236ca5b177e5551190675267506e37a9609f6a6e3ca607fa255
[INFO] running `Command { std: "docker" "start" "-a" "709d24caf9a7d236ca5b177e5551190675267506e37a9609f6a6e3ca607fa255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "709d24caf9a7d236ca5b177e5551190675267506e37a9609f6a6e3ca607fa255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "709d24caf9a7d236ca5b177e5551190675267506e37a9609f6a6e3ca607fa255", kill_on_drop: false }`
[INFO] [stdout] 709d24caf9a7d236ca5b177e5551190675267506e37a9609f6a6e3ca607fa255
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+c9af9c1dc85a55e309345030ff9cb7ea247953fa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da22828ac5cc9559a9204261ce8f23eb2887cd0a6b068c846c133ca83cc5b009
[INFO] running `Command { std: "docker" "start" "-a" "da22828ac5cc9559a9204261ce8f23eb2887cd0a6b068c846c133ca83cc5b009", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]     Checking csv-core v0.1.13
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking csv v1.4.0
[INFO] [stderr]     Checking ndarray-rand v0.11.0
[INFO] [stderr]     Checking utah2 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self::macros::*`
[INFO] [stdout]  --> src/util/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use self::macros::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `has_error_description_deprecated`
[INFO] [stdout]   --> src/util/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout]  4 | / error_chain! {
[INFO] [stdout] ...  |
[INFO] [stdout] 48 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]    = help: try referring to `impl_error_chain_processed` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]    = help: the macro `impl_error_chain_processed` may come from an old version of the `error_chain` crate, try updating your dependency with `cargo update -p error_chain`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous glob re-exports
[INFO] [stdout]  --> src/prelude.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use crate::util::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^ the name `readcsv` in the type namespace is first re-exported here
[INFO] [stdout] 2 | pub use crate::dataframe::*;
[INFO] [stdout] 3 | pub use crate::combinators::*;
[INFO] [stdout]   |         --------------------- but the name `readcsv` in the type namespace is also re-exported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(ambiguous_glob_reexports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/dataframe.rs:97:35
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let d = self.data.map(|x| ((*x).clone()));
[INFO] [stdout]    |                                   ^            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 97 -         let d = self.data.map(|x| ((*x).clone()));
[INFO] [stdout] 97 +         let d = self.data.map(|x| (*x).clone());
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:339:75
[INFO] [stdout]     |
[INFO] [stdout] 339 |         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout]     |                                                                           ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 339 -         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout] 339 +         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:372:70
[INFO] [stdout]     |
[INFO] [stdout] 372 |         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout]     |                                                                      ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 372 -         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout] 372 +         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:382:35
[INFO] [stdout]     |
[INFO] [stdout] 382 |         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout]     |                                   ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 382 -         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout] 382 +         Ok(Array::from(c).map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:410:75
[INFO] [stdout]     |
[INFO] [stdout] 410 |         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout]     |                                                                           ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 410 -         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout] 410 +         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:444:70
[INFO] [stdout]     |
[INFO] [stdout] 444 |         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout]     |                                                                      ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 444 -         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout] 444 +         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:452:35
[INFO] [stdout]     |
[INFO] [stdout] 452 |         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout]     |                                   ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 452 -         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout] 452 +         Ok(Array::from(c).map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:483:75
[INFO] [stdout]     |
[INFO] [stdout] 483 |         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout]     |                                                                           ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 483 -         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout] 483 +         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:517:70
[INFO] [stdout]     |
[INFO] [stdout] 517 |         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout]     |                                                                      ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 517 -         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout] 517 +         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:525:35
[INFO] [stdout]     |
[INFO] [stdout] 525 |         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout]     |                                   ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 525 -         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout] 525 +         Ok(Array::from(c).map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/transform.rs:287:22
[INFO] [stdout]     |
[INFO] [stdout] 287 |             .map(|x| (String::from(*x)))
[INFO] [stdout]     |                      ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 287 -             .map(|x| (String::from(*x)))
[INFO] [stdout] 287 +             .map(|x| String::from(*x))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]  --> src/implement/mod.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[cfg(features = "specialization")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] help: there is a config with a similar name and different values
[INFO] [stdout]   |
[INFO] [stdout] 4 - #[cfg(features = "specialization")]
[INFO] [stdout] 4 + #[cfg(feature)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]  --> src/implement/mod.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[cfg(features = "specialization")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] help: there is a config with a similar name and different values
[INFO] [stdout]   |
[INFO] [stdout] 9 - #[cfg(features = "specialization")]
[INFO] [stdout] 9 + #[cfg(feature)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::macros::*`
[INFO] [stdout]  --> src/util/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use self::macros::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::impl_constructor_generic::*`
[INFO] [stdout]  --> src/implement/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use self::impl_constructor_generic::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::impl_empty::*`
[INFO] [stdout]  --> src/implement/mod.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use self::impl_empty::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::impl_ops_generic::*`
[INFO] [stdout]  --> src/implement/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use self::impl_ops_generic::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `specialization`
[INFO] [stdout]  --> src/implement/impl_ops_generic.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[cfg(not(feature = "specialization"))]
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `specialization` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `specialization`
[INFO] [stdout]    --> src/implement/impl_ops_generic.rs:235:7
[INFO] [stdout]     |
[INFO] [stdout] 235 | #[cfg(feature = "specialization")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `specialization` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `has_error_description_deprecated`
[INFO] [stdout]   --> src/util/error.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout]  4 | / error_chain! {
[INFO] [stdout] ...  |
[INFO] [stdout] 48 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]    = note: using a cfg inside a macro will use the cfgs from the destination crate and not the ones from the defining crate
[INFO] [stdout]    = help: try referring to `impl_error_chain_processed` crate for guidance on how handle this unexpected cfg
[INFO] [stdout]    = help: the macro `impl_error_chain_processed` may come from an old version of the `error_chain` crate, try updating your dependency with `cargo update -p error_chain`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous glob re-exports
[INFO] [stdout]  --> src/prelude.rs:1:9
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub use crate::util::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^ the name `readcsv` in the type namespace is first re-exported here
[INFO] [stdout] 2 | pub use crate::dataframe::*;
[INFO] [stdout] 3 | pub use crate::combinators::*;
[INFO] [stdout]   |         --------------------- but the name `readcsv` in the type namespace is also re-exported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(ambiguous_glob_reexports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/dataframe.rs:97:35
[INFO] [stdout]    |
[INFO] [stdout] 97 |         let d = self.data.map(|x| ((*x).clone()));
[INFO] [stdout]    |                                   ^            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 97 -         let d = self.data.map(|x| ((*x).clone()));
[INFO] [stdout] 97 +         let d = self.data.map(|x| (*x).clone());
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:339:75
[INFO] [stdout]     |
[INFO] [stdout] 339 |         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout]     |                                                                           ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 339 -         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout] 339 +         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:372:70
[INFO] [stdout]     |
[INFO] [stdout] 372 |         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout]     |                                                                      ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 372 -         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout] 372 +         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:382:35
[INFO] [stdout]     |
[INFO] [stdout] 382 |         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout]     |                                   ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 382 -         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout] 382 +         Ok(Array::from(c).map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:410:75
[INFO] [stdout]     |
[INFO] [stdout] 410 |         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout]     |                                                                           ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 410 -         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout] 410 +         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:444:70
[INFO] [stdout]     |
[INFO] [stdout] 444 |         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout]     |                                                                      ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 444 -         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout] 444 +         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:452:35
[INFO] [stdout]     |
[INFO] [stdout] 452 |         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout]     |                                   ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 452 -         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout] 452 +         Ok(Array::from(c).map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:483:75
[INFO] [stdout]     |
[INFO] [stdout] 483 |         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout]     |                                                                           ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 483 -         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone()));
[INFO] [stdout] 483 +         let d = Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone());
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:517:70
[INFO] [stdout]     |
[INFO] [stdout] 517 |         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout]     |                                                                      ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 517 -         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| ((*x).clone())))
[INFO] [stdout] 517 +         Ok(Array::from_shape_vec((nrows, ncols), c).unwrap().map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/process.rs:525:35
[INFO] [stdout]     |
[INFO] [stdout] 525 |         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout]     |                                   ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 525 -         Ok(Array::from(c).map(|x| ((*x).clone())))
[INFO] [stdout] 525 +         Ok(Array::from(c).map(|x| (*x).clone()))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/combinators/transform.rs:287:22
[INFO] [stdout]     |
[INFO] [stdout] 287 |             .map(|x| (String::from(*x)))
[INFO] [stdout]     |                      ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 287 -             .map(|x| (String::from(*x)))
[INFO] [stdout] 287 +             .map(|x| String::from(*x))
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]  --> src/implement/mod.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[cfg(features = "specialization")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] help: there is a config with a similar name and different values
[INFO] [stdout]   |
[INFO] [stdout] 4 - #[cfg(features = "specialization")]
[INFO] [stdout] 4 + #[cfg(feature)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `features`
[INFO] [stdout]  --> src/implement/mod.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[cfg(features = "specialization")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] help: there is a config with a similar name and different values
[INFO] [stdout]   |
[INFO] [stdout] 9 - #[cfg(features = "specialization")]
[INFO] [stdout] 9 + #[cfg(feature)]
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::impl_constructor_generic::*`
[INFO] [stdout]  --> src/implement/mod.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use self::impl_constructor_generic::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::impl_empty::*`
[INFO] [stdout]  --> src/implement/mod.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use self::impl_empty::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::impl_ops_generic::*`
[INFO] [stdout]  --> src/implement/mod.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub use self::impl_ops_generic::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `specialization`
[INFO] [stdout]  --> src/implement/impl_ops_generic.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[cfg(not(feature = "specialization"))]
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]   |
[INFO] [stdout]   = note: no expected values for `feature`
[INFO] [stdout]   = help: consider adding `specialization` as a feature in `Cargo.toml`
[INFO] [stdout]   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `specialization`
[INFO] [stdout]    --> src/implement/impl_ops_generic.rs:235:7
[INFO] [stdout]     |
[INFO] [stdout] 235 | #[cfg(feature = "specialization")]
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]     |
[INFO] [stdout]     = note: no expected values for `feature`
[INFO] [stdout]     = help: consider adding `specialization` as a feature in `Cargo.toml`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `data`, `other`, and `axis` are never read
[INFO] [stdout]    --> src/combinators/aggregate.rs:173:5
[INFO] [stdout]     |
[INFO] [stdout] 169 | pub struct Stdev<'a, I: 'a, T: 'a>
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 173 |     data: I,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 174 |     other: Vec<String>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 175 |     axis: UtahAxis,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stdev` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `data`, `other`, and `axis` are never read
[INFO] [stdout]    --> src/combinators/aggregate.rs:173:5
[INFO] [stdout]     |
[INFO] [stdout] 169 | pub struct Stdev<'a, I: 'a, T: 'a>
[INFO] [stdout]     |            ----- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 173 |     data: I,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 174 |     other: Vec<String>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 175 |     axis: UtahAxis,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Stdev` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.00s
[INFO] running `Command { std: "docker" "inspect" "da22828ac5cc9559a9204261ce8f23eb2887cd0a6b068c846c133ca83cc5b009", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da22828ac5cc9559a9204261ce8f23eb2887cd0a6b068c846c133ca83cc5b009", kill_on_drop: false }`
[INFO] [stdout] da22828ac5cc9559a9204261ce8f23eb2887cd0a6b068c846c133ca83cc5b009