[INFO] cloning repository https://github.com/13dev/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/13dev/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F13dev%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F13dev%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 11cc0596fba80685a7aac59f0275b04d1b5a629d
[INFO] checking 13dev/learning-rust against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F13dev%2Flearning-rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/13dev/learning-rust 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/13dev/learning-rust
[INFO] finished tweaking git repo https://github.com/13dev/learning-rust
[INFO] tweaked toml for git repo https://github.com/13dev/learning-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/13dev/learning-rust 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-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f979a4d34f456e791a9785a7f148c801fe703520b3bf78a008cce6eec0dc3b02
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f979a4d34f456e791a9785a7f148c801fe703520b3bf78a008cce6eec0dc3b02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f979a4d34f456e791a9785a7f148c801fe703520b3bf78a008cce6eec0dc3b02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f979a4d34f456e791a9785a7f148c801fe703520b3bf78a008cce6eec0dc3b02", kill_on_drop: false }`
[INFO] [stdout] f979a4d34f456e791a9785a7f148c801fe703520b3bf78a008cce6eec0dc3b02
[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=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] 5ae52df55380c4f7d626ecf303891b6bdbf9bb847257a7f098f27220119ed66e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "5ae52df55380c4f7d626ecf303891b6bdbf9bb847257a7f098f27220119ed66e", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking testing-rust v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/loops.rs (1 fix)
[INFO] [stderr]        Fixed src/tuples.rs (1 fix)
[INFO] [stdout] warning: function is never used: `infinite_loop`
[INFO] [stdout]  --> src/loops.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn infinite_loop() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `while_loop`
[INFO] [stdout]   --> src/loops.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn while_loop() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_loops`
[INFO] [stdout]   --> src/loops.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn for_loops() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Direction`
[INFO] [stdout]  --> src/enums.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Direction {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `var_enum`
[INFO] [stdout]   --> src/enums.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn var_enum() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAXIMUM_NUMBER`
[INFO] [stdout]  --> src/constants.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const MAXIMUM_NUMBER: u8 = 10;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `testing_constant`
[INFO] [stdout]  --> src/constants.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn testing_constant() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `define_tuples`
[INFO] [stdout]  --> src/tuples.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn define_tuples() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `infinite_loop`
[INFO] [stdout]  --> src/loops.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn infinite_loop() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `while_loop`
[INFO] [stdout]   --> src/loops.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn while_loop() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_loops`
[INFO] [stdout]   --> src/loops.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn for_loops() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Direction`
[INFO] [stdout]  --> src/enums.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Direction {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `var_enum`
[INFO] [stdout]   --> src/enums.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn var_enum() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAXIMUM_NUMBER`
[INFO] [stdout]  --> src/constants.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const MAXIMUM_NUMBER: u8 = 10;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `testing_constant`
[INFO] [stdout]  --> src/constants.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn testing_constant() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `define_tuples`
[INFO] [stdout]  --> src/tuples.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn define_tuples() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.72s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking testing-rust v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: function is never used: `infinite_loop`
[INFO] [stdout]  --> src/loops.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn infinite_loop() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `while_loop`
[INFO] [stdout]   --> src/loops.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn while_loop() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_loops`
[INFO] [stdout]   --> src/loops.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn for_loops() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Direction`
[INFO] [stdout]  --> src/enums.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Direction {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `var_enum`
[INFO] [stdout]   --> src/enums.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn var_enum() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAXIMUM_NUMBER`
[INFO] [stdout]  --> src/constants.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const MAXIMUM_NUMBER: u8 = 10;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `testing_constant`
[INFO] [stdout]  --> src/constants.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn testing_constant() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `define_tuples`
[INFO] [stdout]  --> src/tuples.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn define_tuples() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `infinite_loop`
[INFO] [stdout]  --> src/loops.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn infinite_loop() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `while_loop`
[INFO] [stdout]   --> src/loops.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn while_loop() {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `for_loops`
[INFO] [stdout]   --> src/loops.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn for_loops() {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Direction`
[INFO] [stdout]  --> src/enums.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub enum Direction {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `var_enum`
[INFO] [stdout]   --> src/enums.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub fn var_enum() {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MAXIMUM_NUMBER`
[INFO] [stdout]  --> src/constants.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | const MAXIMUM_NUMBER: u8 = 10;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `testing_constant`
[INFO] [stdout]  --> src/constants.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn testing_constant() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `define_tuples`
[INFO] [stdout]  --> src/tuples.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn define_tuples() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "5ae52df55380c4f7d626ecf303891b6bdbf9bb847257a7f098f27220119ed66e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ae52df55380c4f7d626ecf303891b6bdbf9bb847257a7f098f27220119ed66e", kill_on_drop: false }`
[INFO] [stdout] 5ae52df55380c4f7d626ecf303891b6bdbf9bb847257a7f098f27220119ed66e