Dec 18 08:03:46.608 INFO checking DLeyland/Hello-Rust against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 08:03:46.608 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/DLeyland/Hello-Rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 08:03:47.078 INFO [stdout] 7bd0cd8efd762b362647ed933934cf4756ba5332c2545c9b68ed9f3a4a3bb923
Dec 18 08:03:47.080 INFO running `"docker" "start" "-a" "7bd0cd8efd762b362647ed933934cf4756ba5332c2545c9b68ed9f3a4a3bb923"`
Dec 18 08:03:48.797 INFO [stderr]     Checking hello_world v0.0.1 (/opt/crater/workdir)
Dec 18 08:03:49.256 INFO [stderr] warning: unused variable: `i`
Dec 18 08:03:49.256 INFO [stderr]  --> src/main.rs:4:9
Dec 18 08:03:49.256 INFO [stderr]   |
Dec 18 08:03:49.256 INFO [stderr] 4 |     for i in 0..10{
Dec 18 08:03:49.256 INFO [stderr]   |         ^ help: consider using `_i` instead
Dec 18 08:03:49.256 INFO [stderr]   |
Dec 18 08:03:49.256 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 18 08:03:49.256 INFO [stderr] 
Dec 18 08:03:49.256 INFO [stderr] warning: unused variable: `hello_world1`
Dec 18 08:03:49.256 INFO [stderr]   --> src/main.rs:24:6
Dec 18 08:03:49.256 INFO [stderr]    |
Dec 18 08:03:49.256 INFO [stderr] 24 |     let hello_world1 = hello + world1; //no ampersand needed to add a string and a &str
Dec 18 08:03:49.256 INFO [stderr]    |         ^^^^^^^^^^^^ help: consider using `_hello_world1` instead
Dec 18 08:03:49.256 INFO [stderr] 
Dec 18 08:03:49.256 INFO [stderr] warning: unused variable: `hello_world2`
Dec 18 08:03:49.256 INFO [stderr]   --> src/main.rs:28:6
Dec 18 08:03:49.256 INFO [stderr]    |
Dec 18 08:03:49.256 INFO [stderr] 28 |     let hello_world2 = hello2 + &world2; //ampersand needed when adding two strings, to allow second string to deref into &str
Dec 18 08:03:49.256 INFO [stderr]    |         ^^^^^^^^^^^^ help: consider using `_hello_world2` instead
Dec 18 08:03:49.257 INFO [stderr] 
Dec 18 08:03:49.262 INFO [stderr] warning: function is never used: `for_loop`
Dec 18 08:03:49.262 INFO [stderr]  --> src/main.rs:1:1
Dec 18 08:03:49.263 INFO [stderr]   |
Dec 18 08:03:49.263 INFO [stderr] 1 | fn for_loop(){
Dec 18 08:03:49.263 INFO [stderr]   | ^^^^^^^^^^^^^
Dec 18 08:03:49.263 INFO [stderr]   |
Dec 18 08:03:49.263 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 08:03:49.263 INFO [stderr] 
Dec 18 08:03:49.263 INFO [stderr] warning: function is never used: `while_loop_with_vec`
Dec 18 08:03:49.263 INFO [stderr]   --> src/main.rs:10:1
Dec 18 08:03:49.263 INFO [stderr]    |
Dec 18 08:03:49.263 INFO [stderr] 10 | fn while_loop_with_vec(){
Dec 18 08:03:49.263 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:03:49.263 INFO [stderr] 
Dec 18 08:03:49.263 INFO [stderr] warning: function is never used: `string_example`
Dec 18 08:03:49.263 INFO [stderr]   --> src/main.rs:20:1
Dec 18 08:03:49.263 INFO [stderr]    |
Dec 18 08:03:49.263 INFO [stderr] 20 | fn string_example(){
Dec 18 08:03:49.263 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^
Dec 18 08:03:49.263 INFO [stderr] 
Dec 18 08:03:49.263 INFO [stderr] warning: struct is never constructed: `Circle`
Dec 18 08:03:49.263 INFO [stderr]   --> src/main.rs:31:1
Dec 18 08:03:49.263 INFO [stderr]    |
Dec 18 08:03:49.263 INFO [stderr] 31 | struct Circle{
Dec 18 08:03:49.263 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 18 08:03:49.263 INFO [stderr] 
Dec 18 08:03:49.267 INFO [stderr] warning: method is never used: `area`
Dec 18 08:03:49.267 INFO [stderr]   --> src/main.rs:38:2
Dec 18 08:03:49.267 INFO [stderr]    |
Dec 18 08:03:49.267 INFO [stderr] 38 |     fn area(&self)->f64{
Dec 18 08:03:49.267 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 08:03:49.267 INFO [stderr] 
Dec 18 08:03:49.267 INFO [stderr] warning: function is never used: `circle_area`
Dec 18 08:03:49.268 INFO [stderr]   --> src/main.rs:43:1
Dec 18 08:03:49.268 INFO [stderr]    |
Dec 18 08:03:49.268 INFO [stderr] 43 | fn circle_area(){ 
Dec 18 08:03:49.268 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 18 08:03:49.268 INFO [stderr] 
Dec 18 08:03:49.300 INFO [stderr] warning: unused variable: `i`
Dec 18 08:03:49.300 INFO [stderr]  --> src/main.rs:4:9
Dec 18 08:03:49.300 INFO [stderr]   |
Dec 18 08:03:49.300 INFO [stderr] 4 |     for i in 0..10{
Dec 18 08:03:49.300 INFO [stderr]   |         ^ help: consider using `_i` instead
Dec 18 08:03:49.300 INFO [stderr]   |
Dec 18 08:03:49.300 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 18 08:03:49.300 INFO [stderr] 
Dec 18 08:03:49.300 INFO [stderr] warning: unused variable: `hello_world1`
Dec 18 08:03:49.300 INFO [stderr]   --> src/main.rs:24:6
Dec 18 08:03:49.300 INFO [stderr]    |
Dec 18 08:03:49.300 INFO [stderr] 24 |     let hello_world1 = hello + world1; //no ampersand needed to add a string and a &str
Dec 18 08:03:49.300 INFO [stderr]    |         ^^^^^^^^^^^^ help: consider using `_hello_world1` instead
Dec 18 08:03:49.300 INFO [stderr] 
Dec 18 08:03:49.300 INFO [stderr] warning: unused variable: `hello_world2`
Dec 18 08:03:49.300 INFO [stderr]   --> src/main.rs:28:6
Dec 18 08:03:49.300 INFO [stderr]    |
Dec 18 08:03:49.300 INFO [stderr] 28 |     let hello_world2 = hello2 + &world2; //ampersand needed when adding two strings, to allow second string to deref into &str
Dec 18 08:03:49.300 INFO [stderr]    |         ^^^^^^^^^^^^ help: consider using `_hello_world2` instead
Dec 18 08:03:49.300 INFO [stderr] 
Dec 18 08:03:49.307 INFO [stderr] warning: function is never used: `for_loop`
Dec 18 08:03:49.307 INFO [stderr]  --> src/main.rs:1:1
Dec 18 08:03:49.307 INFO [stderr]   |
Dec 18 08:03:49.307 INFO [stderr] 1 | fn for_loop(){
Dec 18 08:03:49.307 INFO [stderr]   | ^^^^^^^^^^^^^
Dec 18 08:03:49.307 INFO [stderr]   |
Dec 18 08:03:49.307 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 18 08:03:49.307 INFO [stderr] 
Dec 18 08:03:49.307 INFO [stderr] warning: function is never used: `while_loop_with_vec`
Dec 18 08:03:49.307 INFO [stderr]   --> src/main.rs:10:1
Dec 18 08:03:49.307 INFO [stderr]    |
Dec 18 08:03:49.307 INFO [stderr] 10 | fn while_loop_with_vec(){
Dec 18 08:03:49.307 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 08:03:49.307 INFO [stderr] 
Dec 18 08:03:49.307 INFO [stderr] warning: function is never used: `string_example`
Dec 18 08:03:49.307 INFO [stderr]   --> src/main.rs:20:1
Dec 18 08:03:49.307 INFO [stderr]    |
Dec 18 08:03:49.307 INFO [stderr] 20 | fn string_example(){
Dec 18 08:03:49.307 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^
Dec 18 08:03:49.307 INFO [stderr] 
Dec 18 08:03:49.307 INFO [stderr] warning: struct is never constructed: `Circle`
Dec 18 08:03:49.307 INFO [stderr]   --> src/main.rs:31:1
Dec 18 08:03:49.307 INFO [stderr]    |
Dec 18 08:03:49.307 INFO [stderr] 31 | struct Circle{
Dec 18 08:03:49.307 INFO [stderr]    | ^^^^^^^^^^^^^
Dec 18 08:03:49.307 INFO [stderr] 
Dec 18 08:03:49.307 INFO [stderr] warning: method is never used: `area`
Dec 18 08:03:49.307 INFO [stderr]   --> src/main.rs:38:2
Dec 18 08:03:49.307 INFO [stderr]    |
Dec 18 08:03:49.307 INFO [stderr] 38 |     fn area(&self)->f64{
Dec 18 08:03:49.307 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 18 08:03:49.307 INFO [stderr] 
Dec 18 08:03:49.307 INFO [stderr] warning: function is never used: `circle_area`
Dec 18 08:03:49.307 INFO [stderr]   --> src/main.rs:43:1
Dec 18 08:03:49.307 INFO [stderr]    |
Dec 18 08:03:49.307 INFO [stderr] 43 | fn circle_area(){ 
Dec 18 08:03:49.307 INFO [stderr]    | ^^^^^^^^^^^^^^^^
Dec 18 08:03:49.307 INFO [stderr] 
Dec 18 08:03:49.372 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
Dec 18 08:03:49.790 INFO running `"docker" "inspect" "7bd0cd8efd762b362647ed933934cf4756ba5332c2545c9b68ed9f3a4a3bb923"`
Dec 18 08:03:50.006 INFO running `"docker" "rm" "-f" "7bd0cd8efd762b362647ed933934cf4756ba5332c2545c9b68ed9f3a4a3bb923"`
Dec 18 08:03:50.250 INFO [stdout] 7bd0cd8efd762b362647ed933934cf4756ba5332c2545c9b68ed9f3a4a3bb923