Sep 10 05:36:16.008 INFO checking DLeyland/Hello-Rust against master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1 for pr-54090
Sep 10 05:36:16.008 INFO running: cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets
Sep 10 05:36:16.008 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54090/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-4/master#f50b7758f4dc85dc1c5e38258adaa94213ac6ed1:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +f50b7758f4dc85dc1c5e38258adaa94213ac6ed1-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 05:36:16.320 INFO blam! a975c1f7166953d64d337f0e2909de33d16891d13e3fcf6011df6560ba22e75a
Sep 10 05:36:16.322 INFO running `"docker" "start" "-a" "a975c1f7166953d64d337f0e2909de33d16891d13e3fcf6011df6560ba22e75a"`
Sep 10 05:36:17.427 INFO kablam! usermod: no changes
Sep 10 05:36:17.478 INFO kablam!     Checking hello_world v0.0.1 (file:///source)
Sep 10 05:36:18.082 INFO kablam! warning: unused variable: `i`
Sep 10 05:36:18.082 INFO kablam!  --> src/main.rs:4:9
Sep 10 05:36:18.082 INFO kablam!   |
Sep 10 05:36:18.082 INFO kablam! 4 |     for i in 0..10{
Sep 10 05:36:18.082 INFO kablam!   |         ^ help: consider using `_i` instead
Sep 10 05:36:18.082 INFO kablam!   |
Sep 10 05:36:18.082 INFO kablam!   = note: #[warn(unused_variables)] on by default
Sep 10 05:36:18.082 INFO kablam! 
Sep 10 05:36:18.082 INFO kablam! warning: unused variable: `hello_world1`
Sep 10 05:36:18.082 INFO kablam!   --> src/main.rs:24:6
Sep 10 05:36:18.082 INFO kablam!    |
Sep 10 05:36:18.082 INFO kablam! 24 |     let hello_world1 = hello + world1; //no ampersand needed to add a string and a &str
Sep 10 05:36:18.082 INFO kablam!    |         ^^^^^^^^^^^^ help: consider using `_hello_world1` instead
Sep 10 05:36:18.082 INFO kablam! 
Sep 10 05:36:18.082 INFO kablam! warning: unused variable: `hello_world2`
Sep 10 05:36:18.082 INFO kablam!   --> src/main.rs:28:6
Sep 10 05:36:18.082 INFO kablam!    |
Sep 10 05:36:18.082 INFO kablam! 28 |     let hello_world2 = hello2 + &world2; //ampersand needed when adding two strings, to allow second string to deref into &str
Sep 10 05:36:18.082 INFO kablam!    |         ^^^^^^^^^^^^ help: consider using `_hello_world2` instead
Sep 10 05:36:18.082 INFO kablam! 
Sep 10 05:36:18.106 INFO kablam! warning: function is never used: `for_loop`
Sep 10 05:36:18.106 INFO kablam!  --> src/main.rs:1:1
Sep 10 05:36:18.106 INFO kablam!   |
Sep 10 05:36:18.106 INFO kablam! 1 | fn for_loop(){
Sep 10 05:36:18.106 INFO kablam!   | ^^^^^^^^^^^^^
Sep 10 05:36:18.106 INFO kablam!   |
Sep 10 05:36:18.106 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 10 05:36:18.106 INFO kablam! 
Sep 10 05:36:18.106 INFO kablam! warning: function is never used: `while_loop_with_vec`
Sep 10 05:36:18.106 INFO kablam!   --> src/main.rs:10:1
Sep 10 05:36:18.106 INFO kablam!    |
Sep 10 05:36:18.106 INFO kablam! 10 | fn while_loop_with_vec(){
Sep 10 05:36:18.106 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 05:36:18.106 INFO kablam! 
Sep 10 05:36:18.106 INFO kablam! warning: function is never used: `string_example`
Sep 10 05:36:18.106 INFO kablam!   --> src/main.rs:20:1
Sep 10 05:36:18.106 INFO kablam!    |
Sep 10 05:36:18.106 INFO kablam! 20 | fn string_example(){
Sep 10 05:36:18.106 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^
Sep 10 05:36:18.106 INFO kablam! 
Sep 10 05:36:18.106 INFO kablam! warning: struct is never constructed: `Circle`
Sep 10 05:36:18.106 INFO kablam!   --> src/main.rs:31:1
Sep 10 05:36:18.106 INFO kablam!    |
Sep 10 05:36:18.106 INFO kablam! 31 | struct Circle{
Sep 10 05:36:18.106 INFO kablam!    | ^^^^^^^^^^^^^
Sep 10 05:36:18.106 INFO kablam! 
Sep 10 05:36:18.106 INFO kablam! warning: method is never used: `area`
Sep 10 05:36:18.106 INFO kablam!   --> src/main.rs:38:2
Sep 10 05:36:18.106 INFO kablam!    |
Sep 10 05:36:18.107 INFO kablam! 38 |     fn area(&self)->f64{
Sep 10 05:36:18.107 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^
Sep 10 05:36:18.107 INFO kablam! 
Sep 10 05:36:18.107 INFO kablam! warning: function is never used: `circle_area`
Sep 10 05:36:18.107 INFO kablam!   --> src/main.rs:43:1
Sep 10 05:36:18.107 INFO kablam!    |
Sep 10 05:36:18.107 INFO kablam! 43 | fn circle_area(){ 
Sep 10 05:36:18.107 INFO kablam!    | ^^^^^^^^^^^^^^^^
Sep 10 05:36:18.107 INFO kablam! 
Sep 10 05:36:18.130 INFO kablam! warning: unused variable: `i`
Sep 10 05:36:18.130 INFO kablam!  --> src/main.rs:4:9
Sep 10 05:36:18.130 INFO kablam!   |
Sep 10 05:36:18.130 INFO kablam! 4 |     for i in 0..10{
Sep 10 05:36:18.130 INFO kablam!   |         ^ help: consider using `_i` instead
Sep 10 05:36:18.130 INFO kablam!   |
Sep 10 05:36:18.130 INFO kablam!   = note: #[warn(unused_variables)] on by default
Sep 10 05:36:18.130 INFO kablam! 
Sep 10 05:36:18.134 INFO kablam! warning: unused variable: `hello_world1`
Sep 10 05:36:18.134 INFO kablam!   --> src/main.rs:24:6
Sep 10 05:36:18.134 INFO kablam!    |
Sep 10 05:36:18.134 INFO kablam! 24 |     let hello_world1 = hello + world1; //no ampersand needed to add a string and a &str
Sep 10 05:36:18.134 INFO kablam!    |         ^^^^^^^^^^^^ help: consider using `_hello_world1` instead
Sep 10 05:36:18.134 INFO kablam! 
Sep 10 05:36:18.134 INFO kablam! warning: unused variable: `hello_world2`
Sep 10 05:36:18.134 INFO kablam!   --> src/main.rs:28:6
Sep 10 05:36:18.134 INFO kablam!    |
Sep 10 05:36:18.134 INFO kablam! 28 |     let hello_world2 = hello2 + &world2; //ampersand needed when adding two strings, to allow second string to deref into &str
Sep 10 05:36:18.134 INFO kablam!    |         ^^^^^^^^^^^^ help: consider using `_hello_world2` instead
Sep 10 05:36:18.134 INFO kablam! 
Sep 10 05:36:18.150 INFO kablam! warning: function is never used: `for_loop`
Sep 10 05:36:18.150 INFO kablam!  --> src/main.rs:1:1
Sep 10 05:36:18.150 INFO kablam!   |
Sep 10 05:36:18.150 INFO kablam! 1 | fn for_loop(){
Sep 10 05:36:18.150 INFO kablam!   | ^^^^^^^^^^^^^
Sep 10 05:36:18.150 INFO kablam!   |
Sep 10 05:36:18.150 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 10 05:36:18.150 INFO kablam! 
Sep 10 05:36:18.150 INFO kablam! warning: function is never used: `while_loop_with_vec`
Sep 10 05:36:18.150 INFO kablam!   --> src/main.rs:10:1
Sep 10 05:36:18.150 INFO kablam!    |
Sep 10 05:36:18.150 INFO kablam! 10 | fn while_loop_with_vec(){
Sep 10 05:36:18.150 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 05:36:18.150 INFO kablam! 
Sep 10 05:36:18.150 INFO kablam! warning: function is never used: `string_example`
Sep 10 05:36:18.150 INFO kablam!   --> src/main.rs:20:1
Sep 10 05:36:18.150 INFO kablam!    |
Sep 10 05:36:18.150 INFO kablam! 20 | fn string_example(){
Sep 10 05:36:18.150 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^
Sep 10 05:36:18.150 INFO kablam! 
Sep 10 05:36:18.150 INFO kablam! warning: struct is never constructed: `Circle`
Sep 10 05:36:18.150 INFO kablam!   --> src/main.rs:31:1
Sep 10 05:36:18.150 INFO kablam!    |
Sep 10 05:36:18.150 INFO kablam! 31 | struct Circle{
Sep 10 05:36:18.150 INFO kablam!    | ^^^^^^^^^^^^^
Sep 10 05:36:18.150 INFO kablam! 
Sep 10 05:36:18.150 INFO kablam! warning: method is never used: `area`
Sep 10 05:36:18.150 INFO kablam!   --> src/main.rs:38:2
Sep 10 05:36:18.150 INFO kablam!    |
Sep 10 05:36:18.150 INFO kablam! 38 |     fn area(&self)->f64{
Sep 10 05:36:18.150 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^
Sep 10 05:36:18.150 INFO kablam! 
Sep 10 05:36:18.150 INFO kablam! warning: function is never used: `circle_area`
Sep 10 05:36:18.150 INFO kablam!   --> src/main.rs:43:1
Sep 10 05:36:18.150 INFO kablam!    |
Sep 10 05:36:18.150 INFO kablam! 43 | fn circle_area(){ 
Sep 10 05:36:18.150 INFO kablam!    | ^^^^^^^^^^^^^^^^
Sep 10 05:36:18.150 INFO kablam! 
Sep 10 05:36:18.194 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Sep 10 05:36:18.196 INFO kablam! su: No module specific data is present
Sep 10 05:36:19.293 INFO running `"docker" "rm" "-f" "a975c1f7166953d64d337f0e2909de33d16891d13e3fcf6011df6560ba22e75a"`
Sep 10 05:36:19.414 INFO blam! a975c1f7166953d64d337f0e2909de33d16891d13e3fcf6011df6560ba22e75a