[INFO] crate rulinalg 0.4.2 is already in cache
[INFO] extracting crate rulinalg 0.4.2 into work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/rulinalg/0.4.2
[INFO] extracting crate rulinalg 0.4.2 into work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/rulinalg/0.4.2
[INFO] validating manifest of rulinalg-0.4.2 on toolchain master#0f88167f89fffe321590c5148f21b7d51d44388d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rulinalg-0.4.2 on toolchain try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rulinalg-0.4.2
[INFO] finished frobbing rulinalg-0.4.2
[INFO] frobbed toml for rulinalg-0.4.2 written to work/ex/pr-58948/sources/master#0f88167f89fffe321590c5148f21b7d51d44388d/reg/rulinalg/0.4.2/Cargo.toml
[INFO] started frobbing rulinalg-0.4.2
[INFO] finished frobbing rulinalg-0.4.2
[INFO] frobbed toml for rulinalg-0.4.2 written to work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/rulinalg/0.4.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0f88167f89fffe321590c5148f21b7d51d44388d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rulinalg-0.4.2 against try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b for pr-58948
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58948/worker-2/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58948/sources/try#a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b/reg/rulinalg/0.4.2:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+a829e31f924ec11e400e8d0c2fd2c4bb8937ae6b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a45ecd6834f0f821aaff18395bcad6769c7d5ba5de07ac6e18fde273ae92e7d1
[INFO] running `"docker" "start" "-a" "a45ecd6834f0f821aaff18395bcad6769c7d5ba5de07ac6e18fde273ae92e7d1"`
[INFO] [stderr]     Checking rulinalg v0.4.2 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]   --> src/macros/matrix_eq.rs:94:61
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 formatted_mismatches = formatted_mismatches.trim_right().to_string();
[INFO] [stderr]    |                                                             ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:187:61
[INFO] [stderr]     |
[INFO] [stderr] 187 |                 formatted_mismatches = formatted_mismatches.trim_right().to_string();
[INFO] [stderr]     |                                                             ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]    --> src/lib.rs:111:1
[INFO] [stderr]     |
[INFO] [stderr] 111 | #[macro_use]
[INFO] [stderr]     | ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]     --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]      |
[INFO] [stderr] 671  |                     msg = msg.trim_right());
[INFO] [stderr]      |                               ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 1241 |         assert_matrix_eq!(x, x);
[INFO] [stderr]      |         ------------------------ in this macro invocation
[INFO] [stderr]      |
[INFO] [stderr]      = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]     --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]      |
[INFO] [stderr] 671  |                     msg = msg.trim_right());
[INFO] [stderr]      |                               ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 1248 |         assert_matrix_eq!(x, x);
[INFO] [stderr]      |         ------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]     --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]      |
[INFO] [stderr] 671  |                     msg = msg.trim_right());
[INFO] [stderr]      |                               ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 1308 |         assert_matrix_eq!(&x, &x);
[INFO] [stderr]      |         -------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/utils.rs:105:34
[INFO] [stderr]     |
[INFO] [stderr] 105 | pub fn in_place_vec_bin_op<F, T>(mut u: &mut [T], v: &[T], mut f: F)
[INFO] [stderr]     |                                  ----^
[INFO] [stderr]     |                                  |
[INFO] [stderr]     |                                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/matrix/slice.rs:180:9
[INFO] [stderr]     |
[INFO] [stderr] 180 |         assert_matrix_eq!(a, exp);
[INFO] [stderr]     |         -------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/matrix/permutation_matrix.rs:538:9
[INFO] [stderr]     |
[INFO] [stderr] 538 |         assert_matrix_eq!(expected_matrix, p.as_matrix());
[INFO] [stderr]     |         -------------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/matrix/permutation_matrix.rs:687:9
[INFO] [stderr]     |
[INFO] [stderr] 687 |         assert_matrix_eq!(output, matrix![ 3; 1; 0; 2]);
[INFO] [stderr]     |         ------------------------------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/matrix/permutation_matrix.rs:698:9
[INFO] [stderr]     |
[INFO] [stderr] 698 |         assert_matrix_eq!(x, matrix![ 3; 1; 0; 2]);
[INFO] [stderr]     |         ------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/matrix/permutation_matrix.rs:707:9
[INFO] [stderr]     |
[INFO] [stderr] 707 |         assert_matrix_eq!(output, matrix![ 3, 1, 0, 2]);
[INFO] [stderr]     |         ------------------------------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/matrix/permutation_matrix.rs:715:9
[INFO] [stderr]     |
[INFO] [stderr] 715 |         assert_matrix_eq!(x, matrix![ 3, 1, 0, 2]);
[INFO] [stderr]     |         ------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/convert.rs:202:9
[INFO] [stderr]     |
[INFO] [stderr] 202 |         assert_matrix_eq!(y, expected);
[INFO] [stderr]     |         ------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/convert.rs:212:9
[INFO] [stderr]     |
[INFO] [stderr] 212 |         assert_matrix_eq!(y, expected);
[INFO] [stderr]     |         ------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/convert.rs:224:13
[INFO] [stderr]     |
[INFO] [stderr] 224 |             assert_matrix_eq!(y, expected);
[INFO] [stderr]     |             ------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/convert.rs:254:13
[INFO] [stderr]     |
[INFO] [stderr] 254 |             assert_matrix_eq!(y, expected);
[INFO] [stderr]     |             ------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/convert.rs:278:13
[INFO] [stderr]     |
[INFO] [stderr] 278 |             assert_matrix_eq!(y, expected);
[INFO] [stderr]     |             ------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/convert.rs:288:13
[INFO] [stderr]     |
[INFO] [stderr] 288 |             assert_matrix_eq!(y, expected);
[INFO] [stderr]     |             ------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]   --> src/macros/matrix_eq.rs:94:61
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 formatted_mismatches = formatted_mismatches.trim_right().to_string();
[INFO] [stderr]    |                                                             ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:187:61
[INFO] [stderr]     |
[INFO] [stderr] 187 |                 formatted_mismatches = formatted_mismatches.trim_right().to_string();
[INFO] [stderr]     |                                                             ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]     --> src/macros/matrix_eq.rs:755:31
[INFO] [stderr]      |
[INFO] [stderr] 755  |                     msg = msg.trim_right());
[INFO] [stderr]      |                               ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 1423 |         assert_vector_eq!(x, x);
[INFO] [stderr]      |         ------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]     --> src/macros/matrix_eq.rs:755:31
[INFO] [stderr]      |
[INFO] [stderr] 755  |                     msg = msg.trim_right());
[INFO] [stderr]      |                               ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 1429 |         assert_vector_eq!(x, x);
[INFO] [stderr]      |         ------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]     --> src/macros/matrix_eq.rs:755:31
[INFO] [stderr]      |
[INFO] [stderr] 755  |                     msg = msg.trim_right());
[INFO] [stderr]      |                               ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 1437 |         assert_vector_eq!(x, y);
[INFO] [stderr]      |         ------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]     --> src/macros/matrix_eq.rs:755:31
[INFO] [stderr]      |
[INFO] [stderr] 755  |                     msg = msg.trim_right());
[INFO] [stderr]      |                               ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 1445 |         assert_vector_eq!(x, y);
[INFO] [stderr]      |         ------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]     --> src/macros/matrix_eq.rs:755:31
[INFO] [stderr]      |
[INFO] [stderr] 755  |                     msg = msg.trim_right());
[INFO] [stderr]      |                               ^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 1574 |         assert_vector_eq!(&x, &x);
[INFO] [stderr]      |         -------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:755:31
[INFO] [stderr]     |
[INFO] [stderr] 755 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/matrix/permutation_matrix.rs:724:9
[INFO] [stderr]     |
[INFO] [stderr] 724 |         assert_vector_eq!(output, vector![ 3, 1, 0, 2]);
[INFO] [stderr]     |         ------------------------------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:755:31
[INFO] [stderr]     |
[INFO] [stderr] 755 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/matrix/permutation_matrix.rs:732:9
[INFO] [stderr]     |
[INFO] [stderr] 732 |         assert_vector_eq!(x, vector![ 3, 1, 0, 2]);
[INFO] [stderr]     |         ------------------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/convert.rs:173:13
[INFO] [stderr]     |
[INFO] [stderr] 173 |             assert_matrix_eq!(y, matrix![]);
[INFO] [stderr]     |             -------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/convert.rs:179:13
[INFO] [stderr]     |
[INFO] [stderr] 179 |             assert_matrix_eq!(y, matrix![]);
[INFO] [stderr]     |             -------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/convert.rs:185:13
[INFO] [stderr]     |
[INFO] [stderr] 185 |             assert_matrix_eq!(y, matrix![]);
[INFO] [stderr]     |             -------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]    --> src/macros/matrix_eq.rs:671:31
[INFO] [stderr]     |
[INFO] [stderr] 671 |                     msg = msg.trim_right());
[INFO] [stderr]     |                               ^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/convert.rs:191:13
[INFO] [stderr]     |
[INFO] [stderr] 191 |             assert_matrix_eq!(y, matrix![]);
[INFO] [stderr]     |             -------------------------------- in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/utils.rs:105:34
[INFO] [stderr]     |
[INFO] [stderr] 105 | pub fn in_place_vec_bin_op<F, T>(mut u: &mut [T], v: &[T], mut f: F)
[INFO] [stderr]     |                                  ----^
[INFO] [stderr]     |                                  |
[INFO] [stderr]     |                                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.47s
[INFO] running `"docker" "inspect" "a45ecd6834f0f821aaff18395bcad6769c7d5ba5de07ac6e18fde273ae92e7d1"`
[INFO] running `"docker" "rm" "-f" "a45ecd6834f0f821aaff18395bcad6769c7d5ba5de07ac6e18fde273ae92e7d1"`
[INFO] [stdout] a45ecd6834f0f821aaff18395bcad6769c7d5ba5de07ac6e18fde273ae92e7d1