[INFO] fetching crate symb 0.0.1...
[INFO] testing symb-0.0.1 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739-1
[INFO] extracting crate symb 0.0.1 into /workspace/builds/worker-4-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate symb 0.0.1 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "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" "+33835004928d3bf65db4d4712e1330766263b0bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e4684067a0beed1fa7afac6b3e0a2f0487ba1e1047074d9e91d9ff902240486
[INFO] running `Command { std: "docker" "start" "-a" "8e4684067a0beed1fa7afac6b3e0a2f0487ba1e1047074d9e91d9ff902240486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e4684067a0beed1fa7afac6b3e0a2f0487ba1e1047074d9e91d9ff902240486", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e4684067a0beed1fa7afac6b3e0a2f0487ba1e1047074d9e91d9ff902240486", kill_on_drop: false }`
[INFO] [stdout] 8e4684067a0beed1fa7afac6b3e0a2f0487ba1e1047074d9e91d9ff902240486
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f2520c4775cdbcdb73ef9544102b1312fc56cfcde4a03aa24a10ea4e0fc6043
[INFO] running `Command { std: "docker" "start" "-a" "9f2520c4775cdbcdb73ef9544102b1312fc56cfcde4a03aa24a10ea4e0fc6043", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.6.1
[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 2.04s
[INFO] running `Command { std: "docker" "inspect" "9f2520c4775cdbcdb73ef9544102b1312fc56cfcde4a03aa24a10ea4e0fc6043", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f2520c4775cdbcdb73ef9544102b1312fc56cfcde4a03aa24a10ea4e0fc6043", kill_on_drop: false }`
[INFO] [stdout] 9f2520c4775cdbcdb73ef9544102b1312fc56cfcde4a03aa24a10ea4e0fc6043
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f5636157ddf0ce29c82774f474f8f0e3119dad92023186663a691c7e1eb6e11
[INFO] running `Command { std: "docker" "start" "-a" "8f5636157ddf0ce29c82774f474f8f0e3119dad92023186663a691c7e1eb6e11", 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] [stderr]    Compiling symb v0.0.1 (/opt/rustwide/workdir)
[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] [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: 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 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 0.48s
[INFO] running `Command { std: "docker" "inspect" "8f5636157ddf0ce29c82774f474f8f0e3119dad92023186663a691c7e1eb6e11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f5636157ddf0ce29c82774f474f8f0e3119dad92023186663a691c7e1eb6e11", kill_on_drop: false }`
[INFO] [stdout] 8f5636157ddf0ce29c82774f474f8f0e3119dad92023186663a691c7e1eb6e11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2d1df15b84562c149cbb770d46d0f944377620d241f1336a5812396571ff6adc
[INFO] running `Command { std: "docker" "start" "-a" "2d1df15b84562c149cbb770d46d0f944377620d241f1336a5812396571ff6adc", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `itertools::structs::Unique`
[INFO] [stderr]  --> src/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use itertools::structs::Unique;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:261:27
[INFO] [stderr]     |
[INFO] [stderr] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stderr]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/lib.rs:261:44
[INFO] [stderr]     |
[INFO] [stderr] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stderr]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `shape`
[INFO] [stderr]    --> src/lib.rs:261:47
[INFO] [stderr]     |
[INFO] [stderr] 261 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot add vector to matrix elementwise"),
[INFO] [stderr]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:279:27
[INFO] [stderr]     |
[INFO] [stderr] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stderr]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/lib.rs:279:44
[INFO] [stderr]     |
[INFO] [stderr] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stderr]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `shape`
[INFO] [stderr]    --> src/lib.rs:279:47
[INFO] [stderr]     |
[INFO] [stderr] 279 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot sub vector to matrix elementwise"),
[INFO] [stderr]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:297:27
[INFO] [stderr]     |
[INFO] [stderr] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stderr]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/lib.rs:297:44
[INFO] [stderr]     |
[INFO] [stderr] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stderr]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `shape`
[INFO] [stderr]    --> src/lib.rs:297:47
[INFO] [stderr]     |
[INFO] [stderr] 297 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot mul vector to matrix elementwise"),
[INFO] [stderr]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:315:27
[INFO] [stderr]     |
[INFO] [stderr] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stderr]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/lib.rs:315:44
[INFO] [stderr]     |
[INFO] [stderr] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stderr]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `shape`
[INFO] [stderr]    --> src/lib.rs:315:47
[INFO] [stderr]     |
[INFO] [stderr] 315 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot div vector to matrix elementwise"),
[INFO] [stderr]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:332:27
[INFO] [stderr]     |
[INFO] [stderr] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stderr]     |                           ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `y`
[INFO] [stderr]    --> src/lib.rs:332:44
[INFO] [stderr]     |
[INFO] [stderr] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stderr]     |                                            ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `shape`
[INFO] [stderr]    --> src/lib.rs:332:47
[INFO] [stderr]     |
[INFO] [stderr] 332 |             (Self::Vector(x), Self::Matrix(y, shape)) => panic!("Cannot exp vector to matrix elementwise"),
[INFO] [stderr]     |                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/lib.rs:407:28
[INFO] [stderr]     |
[INFO] [stderr] 407 |             Self::Operator(op, args) => {
[INFO] [stderr]     |                            ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]    --> src/lib.rs:444:26
[INFO] [stderr]     |
[INFO] [stderr] 444 |             Self::Matrix(v, shape) => unimplemented!(),
[INFO] [stderr]     |                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `shape`
[INFO] [stderr]    --> src/lib.rs:444:29
[INFO] [stderr]     |
[INFO] [stderr] 444 |             Self::Matrix(v, shape) => unimplemented!(),
[INFO] [stderr]     |                             ^^^^^ help: if this is intentional, prefix it with an underscore: `_shape`
[INFO] [stderr] 
[INFO] [stderr] warning: `symb` (lib) generated 19 warnings (run `cargo fix --lib -p symb` to apply 19 suggestions)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> examples/kernel.rs:8:9
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut expression = Expression::from_str("(x+y)/z").unwrap();
[INFO] [stderr]   |         ----^^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `symb` (example "kernel") generated 1 warning (run `cargo fix --example "kernel" -p symb` to apply 1 suggestion)
[INFO] [stderr] warning: `symb` (lib test) generated 19 warnings (19 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/symb-56a3cac3aee73103)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests symb
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "2d1df15b84562c149cbb770d46d0f944377620d241f1336a5812396571ff6adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d1df15b84562c149cbb770d46d0f944377620d241f1336a5812396571ff6adc", kill_on_drop: false }`
[INFO] [stdout] 2d1df15b84562c149cbb770d46d0f944377620d241f1336a5812396571ff6adc
