[INFO] updating cached repository https://github.com/VladADragos/rust_sandbox
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] eb3d3ddd5c18db40b43883188f7c72e5707ba68e
[INFO] checking VladADragos/rust_sandbox against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVladADragos%2Frust_sandbox" "/workspace/builds/worker-0/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/VladADragos/rust_sandbox on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/VladADragos/rust_sandbox
[INFO] finished tweaking git repo https://github.com/VladADragos/rust_sandbox
[INFO] tweaked toml for git repo https://github.com/VladADragos/rust_sandbox written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/VladADragos/rust_sandbox already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 45f17a23c2d92747815605c14646c210d330e766f005518f9293b93149f0e530
[INFO] running `"docker" "start" "-a" "45f17a23c2d92747815605c14646c210d330e766f005518f9293b93149f0e530"`
[INFO] [stderr]     Checking exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]  --> src/fib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::thread::sleep;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/fib.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/fib.rs:45:20
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 if (verbose) {
[INFO] [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread::sleep`
[INFO] [stderr]  --> src/fib.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::thread::sleep;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Duration`
[INFO] [stderr]  --> src/fib.rs:3:17
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::time::{Duration, Instant};
[INFO] [stderr]   |                 ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]   --> src/fib.rs:45:20
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 if (verbose) {
[INFO] [stderr]    |                    ^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fib_rec`
[INFO] [stderr]  --> src/fib.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn fib_rec(n: u64) -> u64 {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fib_dyn`
[INFO] [stderr]   --> src/fib.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn fib_dyn(n: u64, map: &mut HashMap<u64, u64>) -> u64 {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fib_test`
[INFO] [stderr]   --> src/fib.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn fib_test(fib_type: &str, len: u64, verbose: bool) {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Vec2d`
[INFO] [stderr]  --> src/vec.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Vec2d {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/vec.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub const fn new(x: f64, y: f64) -> Vec2d {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vecAdd`
[INFO] [stderr]   --> src/vec.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn vecAdd(&mut self, v2: Vec2d) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scalarAdd`
[INFO] [stderr]   --> src/vec.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn scalarAdd(&mut self, n: f64) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scale`
[INFO] [stderr]   --> src/vec.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn scale(&mut self, n: f64) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `distance`
[INFO] [stderr]   --> src/vec.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn distance(&mut self, v2: Vec2d) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `vecAdd` should have a snake case name
[INFO] [stderr]   --> src/vec.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn vecAdd(&mut self, v2: Vec2d) {
[INFO] [stderr]    |            ^^^^^^ help: convert the identifier to snake case: `vec_add`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `scalarAdd` should have a snake case name
[INFO] [stderr]   --> src/vec.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn scalarAdd(&mut self, n: f64) {
[INFO] [stderr]    |            ^^^^^^^^^ help: convert the identifier to snake case: `scalar_add`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fib_rec`
[INFO] [stderr]  --> src/fib.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn fib_rec(n: u64) -> u64 {
[INFO] [stderr]   |        ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fib_dyn`
[INFO] [stderr]   --> src/fib.rs:14:8
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn fib_dyn(n: u64, map: &mut HashMap<u64, u64>) -> u64 {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `fib_test`
[INFO] [stderr]   --> src/fib.rs:29:8
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn fib_test(fib_type: &str, len: u64, verbose: bool) {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Vec2d`
[INFO] [stderr]  --> src/vec.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Vec2d {
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/vec.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub const fn new(x: f64, y: f64) -> Vec2d {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `vecAdd`
[INFO] [stderr]   --> src/vec.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn vecAdd(&mut self, v2: Vec2d) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scalarAdd`
[INFO] [stderr]   --> src/vec.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn scalarAdd(&mut self, n: f64) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scale`
[INFO] [stderr]   --> src/vec.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn scale(&mut self, n: f64) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `distance`
[INFO] [stderr]   --> src/vec.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn distance(&mut self, v2: Vec2d) -> f64 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `vecAdd` should have a snake case name
[INFO] [stderr]   --> src/vec.rs:19:12
[INFO] [stderr]    |
[INFO] [stderr] 19 |     pub fn vecAdd(&mut self, v2: Vec2d) {
[INFO] [stderr]    |            ^^^^^^ help: convert the identifier to snake case: `vec_add`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `scalarAdd` should have a snake case name
[INFO] [stderr]   --> src/vec.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn scalarAdd(&mut self, n: f64) {
[INFO] [stderr]    |            ^^^^^^^^^ help: convert the identifier to snake case: `scalar_add`
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "45f17a23c2d92747815605c14646c210d330e766f005518f9293b93149f0e530"`
[INFO] running `"docker" "rm" "-f" "45f17a23c2d92747815605c14646c210d330e766f005518f9293b93149f0e530"`
[INFO] [stdout] 45f17a23c2d92747815605c14646c210d330e766f005518f9293b93149f0e530