[INFO] fetching crate extended_matrix 0.3.6...
[INFO] checking extended_matrix-0.3.6 against 1.55.0 for beta-1.56-3
[INFO] extracting crate extended_matrix 0.3.6 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate extended_matrix 0.3.6 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate extended_matrix 0.3.6
[INFO] finished tweaking crates.io crate extended_matrix 0.3.6
[INFO] tweaked toml for crates.io crate extended_matrix 0.3.6 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate extended_matrix 0.3.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb19c7b8ef3f2a8ad0beebab644b1c79c602fca45bf41ef5ab57755e1295e751
[INFO] running `Command { std: "docker" "start" "-a" "bb19c7b8ef3f2a8ad0beebab644b1c79c602fca45bf41ef5ab57755e1295e751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb19c7b8ef3f2a8ad0beebab644b1c79c602fca45bf41ef5ab57755e1295e751", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb19c7b8ef3f2a8ad0beebab644b1c79c602fca45bf41ef5ab57755e1295e751", kill_on_drop: false }`
[INFO] [stdout] bb19c7b8ef3f2a8ad0beebab644b1c79c602fca45bf41ef5ab57755e1295e751
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c63b5d8072ee78a1a39f77598408ad10d9be56151f4efd01081c85eeee12721b
[INFO] running `Command { std: "docker" "start" "-a" "c63b5d8072ee78a1a39f77598408ad10d9be56151f4efd01081c85eeee12721b", kill_on_drop: false }`
[INFO] [stderr]     Checking colsol v0.1.3
[INFO] [stderr]     Checking extended_matrix v0.3.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> src/basic_matrix/basic_matrix.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `conversion_uint_into_usize`
[INFO] [stdout]   --> src/basic_matrix/basic_matrix.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::functions::{conversion_uint_into_usize};
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/extended_matrix.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/functions.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BasicMatrixType`
[INFO] [stdout]  --> src/functions.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::basic_matrix::basic_matrix::{BasicMatrixType};
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::extended_matrix::Operation`
[INFO] [stdout]  --> src/functions.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::extended_matrix::Operation;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::shape::Shape`
[INFO] [stdout]   --> src/functions.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::shape::Shape;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> src/basic_matrix/basic_matrix.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `conversion_uint_into_usize`
[INFO] [stdout]   --> src/basic_matrix/basic_matrix.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 | use crate::functions::{conversion_uint_into_usize};
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/extended_matrix.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/functions.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BasicMatrixType`
[INFO] [stdout]  --> src/functions.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::basic_matrix::basic_matrix::{BasicMatrixType};
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::extended_matrix::Operation`
[INFO] [stdout]  --> src/functions.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use crate::extended_matrix::Operation;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::shape::Shape`
[INFO] [stdout]   --> src/functions.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use crate::shape::Shape;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/extended_matrix.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |                     let mut current_matrix_element_position =
[INFO] [stdout]     |                         ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/extended_matrix.rs:200:21
[INFO] [stdout]     |
[INFO] [stdout] 200 |                 let mut current_lhs_matrix_element_position =
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/extended_matrix.rs:205:21
[INFO] [stdout]     |
[INFO] [stdout] 205 |                 let mut current_rhs_matrix_element_position =
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/extended_matrix.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |                     let mut current_matrix_element_position =
[INFO] [stdout]     |                         ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/extended_matrix.rs:621:21
[INFO] [stdout]     |
[INFO] [stdout] 621 |                 let mut matrix_element_position =
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/extended_matrix.rs:200:21
[INFO] [stdout]     |
[INFO] [stdout] 200 |                 let mut current_lhs_matrix_element_position =
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/extended_matrix.rs:205:21
[INFO] [stdout]     |
[INFO] [stdout] 205 |                 let mut current_rhs_matrix_element_position =
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/extended_matrix.rs:621:21
[INFO] [stdout]     |
[INFO] [stdout] 621 |                 let mut matrix_element_position =
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
[INFO] running `Command { std: "docker" "inspect" "c63b5d8072ee78a1a39f77598408ad10d9be56151f4efd01081c85eeee12721b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c63b5d8072ee78a1a39f77598408ad10d9be56151f4efd01081c85eeee12721b", kill_on_drop: false }`
[INFO] [stdout] c63b5d8072ee78a1a39f77598408ad10d9be56151f4efd01081c85eeee12721b
