[INFO] fetching crate symb 0.0.1...
[INFO] building symb-0.0.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate symb 0.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate symb 0.0.1
[INFO] finished tweaking crates.io crate symb 0.0.1
[INFO] tweaked toml for crates.io crate symb 0.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate symb 0.0.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate symb 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d83b715749f886d765c74afcc35baba428a7847f186fac71d31a4f00e6efe6a5
[INFO] running `Command { std: "docker" "start" "-a" "d83b715749f886d765c74afcc35baba428a7847f186fac71d31a4f00e6efe6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d83b715749f886d765c74afcc35baba428a7847f186fac71d31a4f00e6efe6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d83b715749f886d765c74afcc35baba428a7847f186fac71d31a4f00e6efe6a5", kill_on_drop: false }`
[INFO] [stdout] d83b715749f886d765c74afcc35baba428a7847f186fac71d31a4f00e6efe6a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9295db786a1f8d83ffd85bb56ae910a53c76e26b3e5e3ee32417f8e96df5ebe
[INFO] running `Command { std: "docker" "start" "-a" "e9295db786a1f8d83ffd85bb56ae910a53c76e26b3e5e3ee32417f8e96df5ebe", kill_on_drop: false }`
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling symb v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `itertools::structs::Unique`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use itertools::structs::Unique;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:261:27
[INFO] [stdout]     |
[INFO] [stdout] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:261:44
[INFO] [stdout]     |
[INFO] [stdout] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:261:47
[INFO] [stdout]     |
[INFO] [stdout] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:279:27
[INFO] [stdout]     |
[INFO] [stdout] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:279:44
[INFO] [stdout]     |
[INFO] [stdout] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:279:47
[INFO] [stdout]     |
[INFO] [stdout] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:297:27
[INFO] [stdout]     |
[INFO] [stdout] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:297:44
[INFO] [stdout]     |
[INFO] [stdout] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:297:47
[INFO] [stdout]     |
[INFO] [stdout] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:315:27
[INFO] [stdout]     |
[INFO] [stdout] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:315:44
[INFO] [stdout]     |
[INFO] [stdout] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:315:47
[INFO] [stdout]     |
[INFO] [stdout] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:332:27
[INFO] [stdout]     |
[INFO] [stdout] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:332:44
[INFO] [stdout]     |
[INFO] [stdout] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:332:47
[INFO] [stdout]     |
[INFO] [stdout] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/lib.rs:407:28
[INFO] [stdout]     |
[INFO] [stdout] 407 |             Self::Operator(op, args) => {
[INFO] [stdout]     |                            ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/lib.rs:444:26
[INFO] [stdout]     |
[INFO] [stdout] 444 |             Self::Matrix(v, shape) => unimplemented!(),
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:444:29
[INFO] [stdout]     |
[INFO] [stdout] 444 |             Self::Matrix(v, shape) => unimplemented!(),
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "e9295db786a1f8d83ffd85bb56ae910a53c76e26b3e5e3ee32417f8e96df5ebe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9295db786a1f8d83ffd85bb56ae910a53c76e26b3e5e3ee32417f8e96df5ebe", kill_on_drop: false }`
[INFO] [stdout] e9295db786a1f8d83ffd85bb56ae910a53c76e26b3e5e3ee32417f8e96df5ebe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ede9feab4be3ea0ac8f826ff9d047bce75da70598b3a044d5d374029d9108d44
[INFO] running `Command { std: "docker" "start" "-a" "ede9feab4be3ea0ac8f826ff9d047bce75da70598b3a044d5d374029d9108d44", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `itertools::structs::Unique`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use itertools::structs::Unique;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:261:27
[INFO] [stdout]     |
[INFO] [stdout] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:261:44
[INFO] [stdout]     |
[INFO] [stdout] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:261:47
[INFO] [stdout]     |
[INFO] [stdout] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:279:27
[INFO] [stdout]     |
[INFO] [stdout] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:279:44
[INFO] [stdout]     |
[INFO] [stdout] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:279:47
[INFO] [stdout]     |
[INFO] [stdout] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:297:27
[INFO] [stdout]     |
[INFO] [stdout] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:297:44
[INFO] [stdout]     |
[INFO] [stdout] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:297:47
[INFO] [stdout]     |
[INFO] [stdout] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:315:27
[INFO] [stdout]     |
[INFO] [stdout] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:315:44
[INFO] [stdout]     |
[INFO] [stdout] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:315:47
[INFO] [stdout]     |
[INFO] [stdout] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:332:27
[INFO] [stdout]     |
[INFO] [stdout] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:332:44
[INFO] [stdout]     |
[INFO] [stdout] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:332:47
[INFO] [stdout]     |
[INFO] [stdout] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/lib.rs:407:28
[INFO] [stdout]     |
[INFO] [stdout] 407 |             Self::Operator(op, args) => {
[INFO] [stdout]     |                            ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling symb v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/lib.rs:444:26
[INFO] [stdout]     |
[INFO] [stdout] 444 |             Self::Matrix(v, shape) => unimplemented!(),
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:444:29
[INFO] [stdout]     |
[INFO] [stdout] 444 |             Self::Matrix(v, shape) => unimplemented!(),
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]  --> examples/kernel.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut expression = Expression::from_str("(x+y)/z").unwrap();
[INFO] [stdout]   |         ----^^^^^^^^^^
[INFO] [stdout]   |         |
[INFO] [stdout]   |         help: remove this `mut`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `itertools::structs::Unique`
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use itertools::structs::Unique;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:261:27
[INFO] [stdout]     |
[INFO] [stdout] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:261:44
[INFO] [stdout]     |
[INFO] [stdout] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:261:47
[INFO] [stdout]     |
[INFO] [stdout] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:279:27
[INFO] [stdout]     |
[INFO] [stdout] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:279:44
[INFO] [stdout]     |
[INFO] [stdout] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:279:47
[INFO] [stdout]     |
[INFO] [stdout] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:297:27
[INFO] [stdout]     |
[INFO] [stdout] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:297:44
[INFO] [stdout]     |
[INFO] [stdout] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:297:47
[INFO] [stdout]     |
[INFO] [stdout] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:315:27
[INFO] [stdout]     |
[INFO] [stdout] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:315:44
[INFO] [stdout]     |
[INFO] [stdout] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:315:47
[INFO] [stdout]     |
[INFO] [stdout] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/lib.rs:332:27
[INFO] [stdout]     |
[INFO] [stdout] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stdout]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:332:44
[INFO] [stdout]     |
[INFO] [stdout] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stdout]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:332:47
[INFO] [stdout]     |
[INFO] [stdout] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stdout]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/lib.rs:407:28
[INFO] [stdout]     |
[INFO] [stdout] 407 |             Self::Operator(op, args) => {
[INFO] [stdout]     |                            ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/lib.rs:444:26
[INFO] [stdout]     |
[INFO] [stdout] 444 |             Self::Matrix(v, shape) => unimplemented!(),
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `shape`
[INFO] [stdout]    --> src/lib.rs:444:29
[INFO] [stdout]     |
[INFO] [stdout] 444 |             Self::Matrix(v, shape) => unimplemented!(),
[INFO] [stdout]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "ede9feab4be3ea0ac8f826ff9d047bce75da70598b3a044d5d374029d9108d44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ede9feab4be3ea0ac8f826ff9d047bce75da70598b3a044d5d374029d9108d44", kill_on_drop: false }`
[INFO] [stdout] ede9feab4be3ea0ac8f826ff9d047bce75da70598b3a044d5d374029d9108d44