[INFO] fetching crate extended_matrix 0.2.10...
[INFO] checking extended_matrix-0.2.10 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate extended_matrix 0.2.10 into /workspace/builds/worker-87/source
[INFO] validating manifest of crates.io crate extended_matrix 0.2.10 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate extended_matrix 0.2.10
[INFO] finished tweaking crates.io crate extended_matrix 0.2.10
[INFO] tweaked toml for crates.io crate extended_matrix 0.2.10 written to /workspace/builds/worker-87/source/Cargo.toml
[INFO] crate crates.io crate extended_matrix 0.2.10 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 06d6617e5dd4cf605b0ce1a23d1680d28951ef8e3a729f976623f428bbaf6a42
[INFO] running `Command { std: "docker" "start" "-a" "06d6617e5dd4cf605b0ce1a23d1680d28951ef8e3a729f976623f428bbaf6a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "06d6617e5dd4cf605b0ce1a23d1680d28951ef8e3a729f976623f428bbaf6a42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06d6617e5dd4cf605b0ce1a23d1680d28951ef8e3a729f976623f428bbaf6a42", kill_on_drop: false }`
[INFO] [stdout] 06d6617e5dd4cf605b0ce1a23d1680d28951ef8e3a729f976623f428bbaf6a42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd28203f975cd5e7ba21ac281f48ea185545283b9dc3cd84ffe1655e4c7a82ff
[INFO] running `Command { std: "docker" "start" "-a" "cd28203f975cd5e7ba21ac281f48ea185545283b9dc3cd84ffe1655e4c7a82ff", kill_on_drop: false }`
[INFO] [stderr]     Checking extended_matrix v0.2.10 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `rows_number`
[INFO] [stdout]    --> src/basic_matrix/non_symmetric_matrix.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn rows_number(&self) -> T
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `columns_number`
[INFO] [stdout]    --> src/basic_matrix/non_symmetric_matrix.rs:266:12
[INFO] [stdout]     |
[INFO] [stdout] 266 |     pub fn columns_number(&self) -> T
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `elements_indexes`
[INFO] [stdout]    --> src/basic_matrix/non_symmetric_matrix.rs:272:12
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn elements_indexes(&self) -> Vec<T>
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `elements_values`
[INFO] [stdout]    --> src/basic_matrix/non_symmetric_matrix.rs:278:12
[INFO] [stdout]     |
[INFO] [stdout] 278 |     pub fn elements_values(&self) -> Vec<V>
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rows_and_columns_number`
[INFO] [stdout]    --> src/basic_matrix/symmetric_matrix.rs:206:12
[INFO] [stdout]     |
[INFO] [stdout] 206 |     pub fn rows_and_columns_number(&self) -> T
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `elements_indexes`
[INFO] [stdout]    --> src/basic_matrix/symmetric_matrix.rs:212:12
[INFO] [stdout]     |
[INFO] [stdout] 212 |     pub fn elements_indexes(&self) -> Vec<T>
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `elements_values`
[INFO] [stdout]    --> src/basic_matrix/symmetric_matrix.rs:218:12
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub fn elements_values(&self) -> Vec<V>
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_symmetric_matrix_struct`
[INFO] [stdout]   --> src/basic_matrix/functions.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn return_symmetric_matrix_struct<T, V>(boxed_struct: Box<dyn BasicMatrixTrait<T, V>>)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_non_symmetric_matrix_struct`
[INFO] [stdout]   --> src/basic_matrix/functions.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn return_non_symmetric_matrix_struct<T, V>(boxed_struct: Box<dyn BasicMatrixTrait<T, V>>)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rows_number`
[INFO] [stdout]    --> src/basic_matrix/non_symmetric_matrix.rs:260:12
[INFO] [stdout]     |
[INFO] [stdout] 260 |     pub fn rows_number(&self) -> T
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `columns_number`
[INFO] [stdout]    --> src/basic_matrix/non_symmetric_matrix.rs:266:12
[INFO] [stdout]     |
[INFO] [stdout] 266 |     pub fn columns_number(&self) -> T
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `elements_indexes`
[INFO] [stdout]    --> src/basic_matrix/non_symmetric_matrix.rs:272:12
[INFO] [stdout]     |
[INFO] [stdout] 272 |     pub fn elements_indexes(&self) -> Vec<T>
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `elements_values`
[INFO] [stdout]    --> src/basic_matrix/non_symmetric_matrix.rs:278:12
[INFO] [stdout]     |
[INFO] [stdout] 278 |     pub fn elements_values(&self) -> Vec<V>
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rows_and_columns_number`
[INFO] [stdout]    --> src/basic_matrix/symmetric_matrix.rs:206:12
[INFO] [stdout]     |
[INFO] [stdout] 206 |     pub fn rows_and_columns_number(&self) -> T
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `elements_indexes`
[INFO] [stdout]    --> src/basic_matrix/symmetric_matrix.rs:212:12
[INFO] [stdout]     |
[INFO] [stdout] 212 |     pub fn elements_indexes(&self) -> Vec<T>
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `elements_values`
[INFO] [stdout]    --> src/basic_matrix/symmetric_matrix.rs:218:12
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub fn elements_values(&self) -> Vec<V>
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_symmetric_matrix_struct`
[INFO] [stdout]   --> src/basic_matrix/functions.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn return_symmetric_matrix_struct<T, V>(boxed_struct: Box<dyn BasicMatrixTrait<T, V>>)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `return_non_symmetric_matrix_struct`
[INFO] [stdout]   --> src/basic_matrix/functions.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | pub fn return_non_symmetric_matrix_struct<T, V>(boxed_struct: Box<dyn BasicMatrixTrait<T, V>>)
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "cd28203f975cd5e7ba21ac281f48ea185545283b9dc3cd84ffe1655e4c7a82ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd28203f975cd5e7ba21ac281f48ea185545283b9dc3cd84ffe1655e4c7a82ff", kill_on_drop: false }`
[INFO] [stdout] cd28203f975cd5e7ba21ac281f48ea185545283b9dc3cd84ffe1655e4c7a82ff