[INFO] fetching crate la 0.2.0...
[INFO] checking la-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate la 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate la 0.2.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate la 0.2.0
[INFO] finished tweaking crates.io crate la 0.2.0
[INFO] tweaked toml for crates.io crate la 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages
[INFO] [stderr]       Adding num v0.1.42 (latest: v0.4.1)
[INFO] [stderr]       Adding num-bigint v0.1.44 (latest: v0.4.4)
[INFO] [stderr]       Adding num-complex v0.1.43 (latest: v0.4.5)
[INFO] [stderr]       Adding num-rational v0.1.42 (latest: v0.4.1)
[INFO] [stderr]       Adding rand v0.3.23 (latest: v0.8.5)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-bigint v0.1.44
[INFO] [stderr]   Downloaded num-rational v0.1.42
[INFO] [stderr]   Downloaded num-complex v0.1.43
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ecea6a4e9a2e5b8b9508d8717aada3ac21e04361262b9d20deb6c997829f0a6
[INFO] running `Command { std: "docker" "start" "-a" "7ecea6a4e9a2e5b8b9508d8717aada3ac21e04361262b9d20deb6c997829f0a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ecea6a4e9a2e5b8b9508d8717aada3ac21e04361262b9d20deb6c997829f0a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ecea6a4e9a2e5b8b9508d8717aada3ac21e04361262b9d20deb6c997829f0a6", kill_on_drop: false }`
[INFO] [stdout] 7ecea6a4e9a2e5b8b9508d8717aada3ac21e04361262b9d20deb6c997829f0a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fceb151a66b5162742393fb33fec6f036cfe84c6447adfb1b16374795681bbb
[INFO] running `Command { std: "docker" "start" "-a" "7fceb151a66b5162742393fb33fec6f036cfe84c6447adfb1b16374795681bbb", kill_on_drop: false }`
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking la v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/matrix/mmatrix.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/matrix/mmatrix.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Option` is imported redundantly
[INFO] [stdout]  --> src/matrix/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::option::Option;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Option` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::vec::Vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use num;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | extern crate num;
[INFO] [stdout]    | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use rand;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | extern crate rand;
[INFO] [stdout]    | ------------------ the item `rand` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:552:5
[INFO] [stdout]     |
[INFO] [stdout] 552 |     try!(write!(fmt, "\n"));
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:554:7
[INFO] [stdout]     |
[INFO] [stdout] 554 |       try!(write!(fmt, "|"));
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:564:7
[INFO] [stdout]     |
[INFO] [stdout] 564 |       try!(write!(fmt, " |\n"));
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:562:9
[INFO] [stdout]     |
[INFO] [stdout] 562 |         try!(write!(fmt, "{}{:?}", padding, v));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/internalutil.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/cholesky.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/eigen.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/lu.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/qr.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/svd.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/util.rs:9:61
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn read_csv<T : Copy>(buf_reader_name : &str, parser : &Fn(&str) -> T) -> Matrix<T> {
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn read_csv<T : Copy>(buf_reader_name : &str, parser : &dyn Fn(&str) -> T) -> Matrix<T> {
[INFO] [stdout]   |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/matrix/mmatrix.rs:19:38
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn mmap<'a>(&'a mut self, f : &Fn(&T) -> T) -> &'a mut Matrix<T> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn mmap<'a>(&'a mut self, f : &dyn Fn(&T) -> T) -> &'a mut Matrix<T> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:186:36
[INFO] [stdout]     |
[INFO] [stdout] 186 |   pub fn map<S : Copy>(&self, f : &Fn(&T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 186 |   pub fn map<S : Copy>(&self, f : &dyn Fn(&T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:198:53
[INFO] [stdout]     |
[INFO] [stdout] 198 |   pub fn reduce<S : Copy>(&self, init: &Vec<S>, f: &Fn(&S, &T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 198 |   pub fn reduce<S : Copy>(&self, init: &Vec<S>, f: &dyn Fn(&S, &T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/matrix/mmatrix.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/matrix/mmatrix.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:494:34
[INFO] [stdout]     |
[INFO] [stdout] 494 |   pub fn filter_rows(&self, f : &Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 494 |   pub fn filter_rows(&self, f : &dyn Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Option` is imported redundantly
[INFO] [stdout]  --> src/matrix/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::option::Option;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Option` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:504:37
[INFO] [stdout]     |
[INFO] [stdout] 504 |   pub fn filter_columns(&self, f : &Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 504 |   pub fn filter_columns(&self, f : &dyn Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::vec::Vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use num;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | extern crate num;
[INFO] [stdout]    | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use rand;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | extern crate rand;
[INFO] [stdout]    | ------------------ the item `rand` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:552:5
[INFO] [stdout]     |
[INFO] [stdout] 552 |     try!(write!(fmt, "\n"));
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:554:7
[INFO] [stdout]     |
[INFO] [stdout] 554 |       try!(write!(fmt, "|"));
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:564:7
[INFO] [stdout]     |
[INFO] [stdout] 564 |       try!(write!(fmt, " |\n"));
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:562:9
[INFO] [stdout]     |
[INFO] [stdout] 562 |         try!(write!(fmt, "{}{:?}", padding, v));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/matrix/mod.rs:1154:38
[INFO] [stdout]      |
[INFO] [stdout] 1154 |   let m2 = m.filter_rows(&|_, row| { ((row % 2) == 0) });
[INFO] [stdout]      |                                      ^              ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1154 -   let m2 = m.filter_rows(&|_, row| { ((row % 2) == 0) });
[INFO] [stdout] 1154 +   let m2 = m.filter_rows(&|_, row| { (row % 2) == 0 });
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/matrix/mod.rs:1163:41
[INFO] [stdout]      |
[INFO] [stdout] 1163 |   let m2 = m.filter_columns(&|_, col| { (col >= 1) });
[INFO] [stdout]      |                                         ^        ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1163 -   let m2 = m.filter_columns(&|_, col| { (col >= 1) });
[INFO] [stdout] 1163 +   let m2 = m.filter_columns(&|_, col| { col >= 1 });
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/internalutil.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/cholesky.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/eigen.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/lu.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/qr.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/svd.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/util.rs:9:61
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn read_csv<T : Copy>(buf_reader_name : &str, parser : &Fn(&str) -> T) -> Matrix<T> {
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn read_csv<T : Copy>(buf_reader_name : &str, parser : &dyn Fn(&str) -> T) -> Matrix<T> {
[INFO] [stdout]   |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/matrix/mmatrix.rs:19:38
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn mmap<'a>(&'a mut self, f : &Fn(&T) -> T) -> &'a mut Matrix<T> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn mmap<'a>(&'a mut self, f : &dyn Fn(&T) -> T) -> &'a mut Matrix<T> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:186:36
[INFO] [stdout]     |
[INFO] [stdout] 186 |   pub fn map<S : Copy>(&self, f : &Fn(&T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 186 |   pub fn map<S : Copy>(&self, f : &dyn Fn(&T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:198:53
[INFO] [stdout]     |
[INFO] [stdout] 198 |   pub fn reduce<S : Copy>(&self, init: &Vec<S>, f: &Fn(&S, &T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 198 |   pub fn reduce<S : Copy>(&self, init: &Vec<S>, f: &dyn Fn(&S, &T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:494:34
[INFO] [stdout]     |
[INFO] [stdout] 494 |   pub fn filter_rows(&self, f : &Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 494 |   pub fn filter_rows(&self, f : &dyn Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:504:37
[INFO] [stdout]     |
[INFO] [stdout] 504 |   pub fn filter_columns(&self, f : &Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 504 |   pub fn filter_columns(&self, f : &dyn Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.97s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint v0.1.44, num-complex v0.1.43, num-rational v0.1.42
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "7fceb151a66b5162742393fb33fec6f036cfe84c6447adfb1b16374795681bbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fceb151a66b5162742393fb33fec6f036cfe84c6447adfb1b16374795681bbb", kill_on_drop: false }`
[INFO] [stdout] 7fceb151a66b5162742393fb33fec6f036cfe84c6447adfb1b16374795681bbb
[INFO] checking la-0.2.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate la 0.2.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate la 0.2.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate la 0.2.0
[INFO] finished tweaking crates.io crate la 0.2.0
[INFO] tweaked toml for crates.io crate la 0.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8917b58643572cb42dc7e485adbe0a6161a4c3bef3427fd7c5f221112e897080
[INFO] running `Command { std: "docker" "start" "-a" "8917b58643572cb42dc7e485adbe0a6161a4c3bef3427fd7c5f221112e897080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8917b58643572cb42dc7e485adbe0a6161a4c3bef3427fd7c5f221112e897080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8917b58643572cb42dc7e485adbe0a6161a4c3bef3427fd7c5f221112e897080", kill_on_drop: false }`
[INFO] [stdout] 8917b58643572cb42dc7e485adbe0a6161a4c3bef3427fd7c5f221112e897080
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8724491c5a2f9dca85b0beb07e06a6b384f8b3331a8a599da097b7d5eebac5ce
[INFO] running `Command { std: "docker" "start" "-a" "8724491c5a2f9dca85b0beb07e06a6b384f8b3331a8a599da097b7d5eebac5ce", kill_on_drop: false }`
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking la v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/matrix/mmatrix.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/matrix/mmatrix.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Option` is imported redundantly
[INFO] [stdout]  --> src/matrix/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::option::Option;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Option` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::vec::Vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use num;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | extern crate num;
[INFO] [stdout]    | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use rand;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | extern crate rand;
[INFO] [stdout]    | ------------------ the item `rand` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:552:5
[INFO] [stdout]     |
[INFO] [stdout] 552 |     try!(write!(fmt, "\n"));
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:554:7
[INFO] [stdout]     |
[INFO] [stdout] 554 |       try!(write!(fmt, "|"));
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:564:7
[INFO] [stdout]     |
[INFO] [stdout] 564 |       try!(write!(fmt, " |\n"));
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:562:9
[INFO] [stdout]     |
[INFO] [stdout] 562 |         try!(write!(fmt, "{}{:?}", padding, v));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/internalutil.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/cholesky.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/eigen.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/lu.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/qr.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/svd.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/util.rs:9:61
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn read_csv<T : Copy>(buf_reader_name : &str, parser : &Fn(&str) -> T) -> Matrix<T> {
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn read_csv<T : Copy>(buf_reader_name : &str, parser : &dyn Fn(&str) -> T) -> Matrix<T> {
[INFO] [stdout]   |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/matrix/mmatrix.rs:19:38
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn mmap<'a>(&'a mut self, f : &Fn(&T) -> T) -> &'a mut Matrix<T> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn mmap<'a>(&'a mut self, f : &dyn Fn(&T) -> T) -> &'a mut Matrix<T> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:186:36
[INFO] [stdout]     |
[INFO] [stdout] 186 |   pub fn map<S : Copy>(&self, f : &Fn(&T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 186 |   pub fn map<S : Copy>(&self, f : &dyn Fn(&T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:198:53
[INFO] [stdout]     |
[INFO] [stdout] 198 |   pub fn reduce<S : Copy>(&self, init: &Vec<S>, f: &Fn(&S, &T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 198 |   pub fn reduce<S : Copy>(&self, init: &Vec<S>, f: &dyn Fn(&S, &T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:494:34
[INFO] [stdout]     |
[INFO] [stdout] 494 |   pub fn filter_rows(&self, f : &Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 494 |   pub fn filter_rows(&self, f : &dyn Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:504:37
[INFO] [stdout]     |
[INFO] [stdout] 504 |   pub fn filter_columns(&self, f : &Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 504 |   pub fn filter_columns(&self, f : &dyn Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/matrix/mmatrix.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::vec::Vec;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/matrix/mmatrix.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Option` is imported redundantly
[INFO] [stdout]  --> src/matrix/mod.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::option::Option;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Option` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::vec::Vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:124:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Vec` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use num;
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout] 2  | extern crate num;
[INFO] [stdout]    | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]   --> src/matrix/mod.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use rand;
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: src/lib.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | extern crate rand;
[INFO] [stdout]    | ------------------ the item `rand` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:552:5
[INFO] [stdout]     |
[INFO] [stdout] 552 |     try!(write!(fmt, "\n"));
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:554:7
[INFO] [stdout]     |
[INFO] [stdout] 554 |       try!(write!(fmt, "|"));
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:564:7
[INFO] [stdout]     |
[INFO] [stdout] 564 |       try!(write!(fmt, " |\n"));
[INFO] [stdout]     |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/matrix/mod.rs:562:9
[INFO] [stdout]     |
[INFO] [stdout] 562 |         try!(write!(fmt, "{}{:?}", padding, v));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/matrix/mod.rs:1154:38
[INFO] [stdout]      |
[INFO] [stdout] 1154 |   let m2 = m.filter_rows(&|_, row| { ((row % 2) == 0) });
[INFO] [stdout]      |                                      ^              ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1154 -   let m2 = m.filter_rows(&|_, row| { ((row % 2) == 0) });
[INFO] [stdout] 1154 +   let m2 = m.filter_rows(&|_, row| { (row % 2) == 0 });
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> src/matrix/mod.rs:1163:41
[INFO] [stdout]      |
[INFO] [stdout] 1163 |   let m2 = m.filter_columns(&|_, col| { (col >= 1) });
[INFO] [stdout]      |                                         ^        ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1163 -   let m2 = m.filter_columns(&|_, col| { (col >= 1) });
[INFO] [stdout] 1163 +   let m2 = m.filter_columns(&|_, col| { col >= 1 });
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/internalutil.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/cholesky.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/eigen.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/lu.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/qr.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `num` is imported redundantly
[INFO] [stdout]  --> src/decomp/svd.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use num;
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate num;
[INFO] [stdout]   | ----------------- the item `num` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/util.rs:9:61
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn read_csv<T : Copy>(buf_reader_name : &str, parser : &Fn(&str) -> T) -> Matrix<T> {
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn read_csv<T : Copy>(buf_reader_name : &str, parser : &dyn Fn(&str) -> T) -> Matrix<T> {
[INFO] [stdout]   |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/matrix/mmatrix.rs:19:38
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn mmap<'a>(&'a mut self, f : &Fn(&T) -> T) -> &'a mut Matrix<T> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 19 |   pub fn mmap<'a>(&'a mut self, f : &dyn Fn(&T) -> T) -> &'a mut Matrix<T> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:186:36
[INFO] [stdout]     |
[INFO] [stdout] 186 |   pub fn map<S : Copy>(&self, f : &Fn(&T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 186 |   pub fn map<S : Copy>(&self, f : &dyn Fn(&T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:198:53
[INFO] [stdout]     |
[INFO] [stdout] 198 |   pub fn reduce<S : Copy>(&self, init: &Vec<S>, f: &Fn(&S, &T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 198 |   pub fn reduce<S : Copy>(&self, init: &Vec<S>, f: &dyn Fn(&S, &T) -> S) -> Matrix<S> {
[INFO] [stdout]     |                                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:494:34
[INFO] [stdout]     |
[INFO] [stdout] 494 |   pub fn filter_rows(&self, f : &Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 494 |   pub fn filter_rows(&self, f : &dyn Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/matrix/mod.rs:504:37
[INFO] [stdout]     |
[INFO] [stdout] 504 |   pub fn filter_columns(&self, f : &Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 504 |   pub fn filter_columns(&self, f : &dyn Fn(&Matrix<T>, usize) -> bool) -> Matrix<T> {
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.10s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint v0.1.44, num-complex v0.1.43, num-rational v0.1.42
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "8724491c5a2f9dca85b0beb07e06a6b384f8b3331a8a599da097b7d5eebac5ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8724491c5a2f9dca85b0beb07e06a6b384f8b3331a8a599da097b7d5eebac5ce", kill_on_drop: false }`
[INFO] [stdout] 8724491c5a2f9dca85b0beb07e06a6b384f8b3331a8a599da097b7d5eebac5ce