[INFO] cloning repository https://github.com/frehrmann/rostig
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/frehrmann/rostig" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrehrmann%2Frostig", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrehrmann%2Frostig'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6433f381fefb6c606b9423bddf1868e6ff78d988
[INFO] checking frehrmann/rostig against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrehrmann%2Frostig" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/frehrmann/rostig on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/frehrmann/rostig
[INFO] finished tweaking git repo https://github.com/frehrmann/rostig
[INFO] tweaked toml for git repo https://github.com/frehrmann/rostig written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/frehrmann/rostig already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 219da07fe9be00b93645134508f2d5bd7e113698c2089ae6fd9c0626673813e1
[INFO] running `Command { std: "docker" "start" "-a" "219da07fe9be00b93645134508f2d5bd7e113698c2089ae6fd9c0626673813e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "219da07fe9be00b93645134508f2d5bd7e113698c2089ae6fd9c0626673813e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "219da07fe9be00b93645134508f2d5bd7e113698c2089ae6fd9c0626673813e1", kill_on_drop: false }`
[INFO] [stdout] 219da07fe9be00b93645134508f2d5bd7e113698c2089ae6fd9c0626673813e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97b0335fb8373474f3038484d63e866af91d4a933b49adc9c9b858f7ef6a2e5f
[INFO] running `Command { std: "docker" "start" "-a" "97b0335fb8373474f3038484d63e866af91d4a933b49adc9c9b858f7ef6a2e5f", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking csv-core v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking toml v0.5.3
[INFO] [stderr]     Checking csv v1.0.7
[INFO] [stderr]     Checking rostig v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/pre.rs (1 fix)
[INFO] [stderr]        Fixed src/main.rs (5 fixes)
[INFO] [stderr]        Fixed src/pre.rs (1 fix)
[INFO] [stderr]        Fixed src/adaline.rs (1 fix)
[INFO] [stdout] warning: field is never read: `sepal_width`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     sepal_width: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `petal_width`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     petal_width: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 105 |     writer.flush();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `NN` should have a snake case name
[INFO] [stdout]    --> src/main.rs:131:10
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let (NN, cost) = {
[INFO] [stdout]     |          ^^ help: convert the identifier to snake case: `nn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Npred` should have a snake case name
[INFO] [stdout]    --> src/main.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let Npred = 21;
[INFO] [stdout]     |         ^^^^^ help: convert the identifier to snake case: `npred`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `grad_num`
[INFO] [stdout]    --> src/adaline.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn grad_num(&mut self, inputs: &Array2<f64>, targets: &Array1<f64>) -> (Array1<f64>, f64) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sepal_width`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     sepal_width: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `petal_width`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     petal_width: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 105 |     writer.flush();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `NN` should have a snake case name
[INFO] [stdout]    --> src/main.rs:131:10
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let (NN, cost) = {
[INFO] [stdout]     |          ^^ help: convert the identifier to snake case: `nn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Npred` should have a snake case name
[INFO] [stdout]    --> src/main.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let Npred = 21;
[INFO] [stdout]     |         ^^^^^ help: convert the identifier to snake case: `npred`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.06s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking rostig v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: associated function is never used: `grad_num`
[INFO] [stdout]    --> src/adaline.rs:138:12
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn grad_num(&mut self, inputs: &Array2<f64>, targets: &Array1<f64>) -> (Array1<f64>, f64) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sepal_width`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     sepal_width: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `petal_width`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     petal_width: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 105 |     writer.flush();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `NN` should have a snake case name
[INFO] [stdout]    --> src/main.rs:131:10
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let (NN, cost) = {
[INFO] [stdout]     |          ^^ help: convert the identifier to snake case: `nn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Npred` should have a snake case name
[INFO] [stdout]    --> src/main.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let Npred = 21;
[INFO] [stdout]     |         ^^^^^ help: convert the identifier to snake case: `npred`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sepal_width`
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     sepal_width: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `petal_width`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     petal_width: f64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:105:5
[INFO] [stdout]     |
[INFO] [stdout] 105 |     writer.flush();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `NN` should have a snake case name
[INFO] [stdout]    --> src/main.rs:131:10
[INFO] [stdout]     |
[INFO] [stdout] 131 |     let (NN, cost) = {
[INFO] [stdout]     |          ^^ help: convert the identifier to snake case: `nn`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Npred` should have a snake case name
[INFO] [stdout]    --> src/main.rs:140:9
[INFO] [stdout]     |
[INFO] [stdout] 140 |     let Npred = 21;
[INFO] [stdout]     |         ^^^^^ help: convert the identifier to snake case: `npred`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "97b0335fb8373474f3038484d63e866af91d4a933b49adc9c9b858f7ef6a2e5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97b0335fb8373474f3038484d63e866af91d4a933b49adc9c9b858f7ef6a2e5f", kill_on_drop: false }`
[INFO] [stdout] 97b0335fb8373474f3038484d63e866af91d4a933b49adc9c9b858f7ef6a2e5f