Oct 12 11:50:16.333 INFO checking tperdue321/rust_ownership against master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f for pr-54977
Oct 12 11:50:16.333 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/pr-54977/master#5af0bb83044c3fb43d59ad5f49ee5ae1a293901f:/source:ro,Z" "-v" "/mnt/big/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +5af0bb83044c3fb43d59ad5f49ee5ae1a293901f-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Oct 12 11:50:16.922 INFO blam! 51f1284b48502fb12ed1a88bc3fa9a1951b646b8b1647e1a55c1e2052ac5e6c3
Oct 12 11:50:16.924 INFO running `"docker" "start" "-a" "51f1284b48502fb12ed1a88bc3fa9a1951b646b8b1647e1a55c1e2052ac5e6c3"`
Oct 12 11:50:18.064 INFO kablam! usermod: no changes
Oct 12 11:50:18.124 INFO kablam!     Checking ownership v0.1.0 (/source)
Oct 12 11:50:18.377 INFO kablam! warning: unused variable: `string`
Oct 12 11:50:18.377 INFO kablam!   --> src/main.rs:13:13
Oct 12 11:50:18.377 INFO kablam!    |
Oct 12 11:50:18.377 INFO kablam! 13 |         let string = "hello"; // string is valid from here forward
Oct 12 11:50:18.378 INFO kablam!    |             ^^^^^^ help: consider using `_string` instead
Oct 12 11:50:18.378 INFO kablam!    |
Oct 12 11:50:18.378 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 11:50:18.378 INFO kablam! 
Oct 12 11:50:18.379 INFO kablam! warning: unused variable: `s2`
Oct 12 11:50:18.379 INFO kablam!   --> src/main.rs:40:9
Oct 12 11:50:18.379 INFO kablam!    |
Oct 12 11:50:18.380 INFO kablam! 40 |     let s2 = s1;
Oct 12 11:50:18.380 INFO kablam!    |         ^^ help: consider using `_s2` instead
Oct 12 11:50:18.380 INFO kablam! 
Oct 12 11:50:18.380 INFO kablam! warning: unused variable: `s1`
Oct 12 11:50:18.381 INFO kablam!   --> src/main.rs:68:9
Oct 12 11:50:18.381 INFO kablam!    |
Oct 12 11:50:18.381 INFO kablam! 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Oct 12 11:50:18.382 INFO kablam!    |         ^^ help: consider using `_s1` instead
Oct 12 11:50:18.382 INFO kablam! 
Oct 12 11:50:18.382 INFO kablam! warning: unused variable: `r1`
Oct 12 11:50:18.382 INFO kablam!   --> src/main.rs:98:9
Oct 12 11:50:18.383 INFO kablam!    |
Oct 12 11:50:18.383 INFO kablam! 98 |     let r1 = &mut s2;
Oct 12 11:50:18.383 INFO kablam!    |         ^^ help: consider using `_r1` instead
Oct 12 11:50:18.383 INFO kablam! 
Oct 12 11:50:18.384 INFO kablam! warning: unused variable: `r3`
Oct 12 11:50:18.384 INFO kablam!    --> src/main.rs:107:13
Oct 12 11:50:18.384 INFO kablam!     |
Oct 12 11:50:18.384 INFO kablam! 107 |         let r3 = &mut s3;
Oct 12 11:50:18.385 INFO kablam!     |             ^^ help: consider using `_r3` instead
Oct 12 11:50:18.385 INFO kablam! 
Oct 12 11:50:18.385 INFO kablam! warning: unused variable: `r4`
Oct 12 11:50:18.386 INFO kablam!    --> src/main.rs:110:9
Oct 12 11:50:18.386 INFO kablam!     |
Oct 12 11:50:18.386 INFO kablam! 110 |     let r4 = &mut s3;
Oct 12 11:50:18.386 INFO kablam!     |         ^^ help: consider using `_r4` instead
Oct 12 11:50:18.387 INFO kablam! 
Oct 12 11:50:18.387 INFO kablam! warning: unused variable: `r1`
Oct 12 11:50:18.387 INFO kablam!    --> src/main.rs:113:9
Oct 12 11:50:18.387 INFO kablam!     |
Oct 12 11:50:18.388 INFO kablam! 113 |     let r1 = &s; // immutable ref
Oct 12 11:50:18.388 INFO kablam!     |         ^^ help: consider using `_r1` instead
Oct 12 11:50:18.388 INFO kablam! 
Oct 12 11:50:18.389 INFO kablam! warning: unused variable: `r2`
Oct 12 11:50:18.389 INFO kablam!    --> src/main.rs:114:9
Oct 12 11:50:18.389 INFO kablam!     |
Oct 12 11:50:18.389 INFO kablam! 114 |     let r2 = &s; // second because as many refs can read the same data safely
Oct 12 11:50:18.390 INFO kablam!     |         ^^ help: consider using `_r2` instead
Oct 12 11:50:18.390 INFO kablam! 
Oct 12 11:50:18.390 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.390 INFO kablam!    --> src/main.rs:140:9
Oct 12 11:50:18.391 INFO kablam!     |
Oct 12 11:50:18.391 INFO kablam! 140 |     let slice = &s[0..2];   // same
Oct 12 11:50:18.391 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.391 INFO kablam! 
Oct 12 11:50:18.392 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.392 INFO kablam!    --> src/main.rs:141:9
Oct 12 11:50:18.392 INFO kablam!     |
Oct 12 11:50:18.392 INFO kablam! 141 |     let slice = &s[..2];    // same
Oct 12 11:50:18.393 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.393 INFO kablam! 
Oct 12 11:50:18.393 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.393 INFO kablam!    --> src/main.rs:145:9
Oct 12 11:50:18.394 INFO kablam!     |
Oct 12 11:50:18.394 INFO kablam! 145 |     let slice = &s[2..len]; // same
Oct 12 11:50:18.394 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.394 INFO kablam! 
Oct 12 11:50:18.394 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.395 INFO kablam!    --> src/main.rs:146:9
Oct 12 11:50:18.395 INFO kablam!     |
Oct 12 11:50:18.395 INFO kablam! 146 |     let slice = &s[2..];    // same
Oct 12 11:50:18.395 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.396 INFO kablam! 
Oct 12 11:50:18.400 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.400 INFO kablam!    --> src/main.rs:148:9
Oct 12 11:50:18.401 INFO kablam!     |
Oct 12 11:50:18.401 INFO kablam! 148 |     let slice = &s[0..len]; // same
Oct 12 11:50:18.401 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.401 INFO kablam! 
Oct 12 11:50:18.402 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.402 INFO kablam!    --> src/main.rs:149:9
Oct 12 11:50:18.402 INFO kablam!     |
Oct 12 11:50:18.402 INFO kablam! 149 |     let slice = &s[..];     // same
Oct 12 11:50:18.403 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.403 INFO kablam! 
Oct 12 11:50:18.403 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.403 INFO kablam!    --> src/main.rs:166:9
Oct 12 11:50:18.404 INFO kablam!     |
Oct 12 11:50:18.404 INFO kablam! 166 |     let slice = &a[0..2];
Oct 12 11:50:18.404 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.405 INFO kablam! 
Oct 12 11:50:18.405 INFO kablam! warning: variable does not need to be mutable
Oct 12 11:50:18.405 INFO kablam!    --> src/main.rs:112:9
Oct 12 11:50:18.405 INFO kablam!     |
Oct 12 11:50:18.406 INFO kablam! 112 |     let mut s = String::from("hello s");
Oct 12 11:50:18.406 INFO kablam!     |         ----^
Oct 12 11:50:18.406 INFO kablam!     |         |
Oct 12 11:50:18.406 INFO kablam!     |         help: remove this `mut`
Oct 12 11:50:18.407 INFO kablam!     |
Oct 12 11:50:18.407 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 12 11:50:18.407 INFO kablam! 
Oct 12 11:50:18.426 INFO kablam! warning: unused variable: `string`
Oct 12 11:50:18.426 INFO kablam!   --> src/main.rs:13:13
Oct 12 11:50:18.426 INFO kablam!    |
Oct 12 11:50:18.426 INFO kablam! 13 |         let string = "hello"; // string is valid from here forward
Oct 12 11:50:18.426 INFO kablam!    |             ^^^^^^ help: consider using `_string` instead
Oct 12 11:50:18.426 INFO kablam!    |
Oct 12 11:50:18.426 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 11:50:18.426 INFO kablam! 
Oct 12 11:50:18.426 INFO kablam! warning: unused variable: `s2`
Oct 12 11:50:18.426 INFO kablam!   --> src/main.rs:40:9
Oct 12 11:50:18.426 INFO kablam!    |
Oct 12 11:50:18.426 INFO kablam! 40 |     let s2 = s1;
Oct 12 11:50:18.426 INFO kablam!    |         ^^ help: consider using `_s2` instead
Oct 12 11:50:18.426 INFO kablam! 
Oct 12 11:50:18.426 INFO kablam! warning: unused variable: `s1`
Oct 12 11:50:18.426 INFO kablam!   --> src/main.rs:68:9
Oct 12 11:50:18.426 INFO kablam!    |
Oct 12 11:50:18.426 INFO kablam! 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Oct 12 11:50:18.426 INFO kablam!    |         ^^ help: consider using `_s1` instead
Oct 12 11:50:18.426 INFO kablam! 
Oct 12 11:50:18.426 INFO kablam! warning: unused variable: `r1`
Oct 12 11:50:18.426 INFO kablam!   --> src/main.rs:98:9
Oct 12 11:50:18.426 INFO kablam!    |
Oct 12 11:50:18.426 INFO kablam! 98 |     let r1 = &mut s2;
Oct 12 11:50:18.426 INFO kablam!    |         ^^ help: consider using `_r1` instead
Oct 12 11:50:18.426 INFO kablam! 
Oct 12 11:50:18.426 INFO kablam! warning: unused variable: `r3`
Oct 12 11:50:18.426 INFO kablam!    --> src/main.rs:107:13
Oct 12 11:50:18.426 INFO kablam!     |
Oct 12 11:50:18.426 INFO kablam! 107 |         let r3 = &mut s3;
Oct 12 11:50:18.426 INFO kablam!     |             ^^ help: consider using `_r3` instead
Oct 12 11:50:18.426 INFO kablam! 
Oct 12 11:50:18.426 INFO kablam! warning: unused variable: `r4`
Oct 12 11:50:18.426 INFO kablam!    --> src/main.rs:110:9
Oct 12 11:50:18.426 INFO kablam!     |
Oct 12 11:50:18.426 INFO kablam! 110 |     let r4 = &mut s3;
Oct 12 11:50:18.426 INFO kablam!     |         ^^ help: consider using `_r4` instead
Oct 12 11:50:18.426 INFO kablam! 
Oct 12 11:50:18.426 INFO kablam! warning: unused variable: `r1`
Oct 12 11:50:18.426 INFO kablam!    --> src/main.rs:113:9
Oct 12 11:50:18.426 INFO kablam!     |
Oct 12 11:50:18.426 INFO kablam! 113 |     let r1 = &s; // immutable ref
Oct 12 11:50:18.426 INFO kablam!     |         ^^ help: consider using `_r1` instead
Oct 12 11:50:18.426 INFO kablam! 
Oct 12 11:50:18.426 INFO kablam! warning: unused variable: `r2`
Oct 12 11:50:18.426 INFO kablam!    --> src/main.rs:114:9
Oct 12 11:50:18.426 INFO kablam!     |
Oct 12 11:50:18.426 INFO kablam! 114 |     let r2 = &s; // second because as many refs can read the same data safely
Oct 12 11:50:18.426 INFO kablam!     |         ^^ help: consider using `_r2` instead
Oct 12 11:50:18.426 INFO kablam! 
Oct 12 11:50:18.426 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.426 INFO kablam!    --> src/main.rs:140:9
Oct 12 11:50:18.426 INFO kablam!     |
Oct 12 11:50:18.426 INFO kablam! 140 |     let slice = &s[0..2];   // same
Oct 12 11:50:18.426 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.426 INFO kablam! 
Oct 12 11:50:18.426 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.426 INFO kablam!    --> src/main.rs:141:9
Oct 12 11:50:18.426 INFO kablam!     |
Oct 12 11:50:18.427 INFO kablam! 141 |     let slice = &s[..2];    // same
Oct 12 11:50:18.427 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.427 INFO kablam! 
Oct 12 11:50:18.427 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.427 INFO kablam!    --> src/main.rs:145:9
Oct 12 11:50:18.427 INFO kablam!     |
Oct 12 11:50:18.427 INFO kablam! 145 |     let slice = &s[2..len]; // same
Oct 12 11:50:18.427 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.427 INFO kablam! 
Oct 12 11:50:18.427 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.427 INFO kablam!    --> src/main.rs:146:9
Oct 12 11:50:18.427 INFO kablam!     |
Oct 12 11:50:18.427 INFO kablam! 146 |     let slice = &s[2..];    // same
Oct 12 11:50:18.427 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.427 INFO kablam! 
Oct 12 11:50:18.427 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.427 INFO kablam!    --> src/main.rs:148:9
Oct 12 11:50:18.427 INFO kablam!     |
Oct 12 11:50:18.427 INFO kablam! 148 |     let slice = &s[0..len]; // same
Oct 12 11:50:18.427 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.427 INFO kablam! 
Oct 12 11:50:18.427 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.427 INFO kablam!    --> src/main.rs:149:9
Oct 12 11:50:18.427 INFO kablam!     |
Oct 12 11:50:18.427 INFO kablam! 149 |     let slice = &s[..];     // same
Oct 12 11:50:18.427 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.427 INFO kablam! 
Oct 12 11:50:18.427 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:18.427 INFO kablam!    --> src/main.rs:166:9
Oct 12 11:50:18.427 INFO kablam!     |
Oct 12 11:50:18.427 INFO kablam! 166 |     let slice = &a[0..2];
Oct 12 11:50:18.427 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:18.427 INFO kablam! 
Oct 12 11:50:18.437 INFO kablam! warning: variable does not need to be mutable
Oct 12 11:50:18.437 INFO kablam!    --> src/main.rs:112:9
Oct 12 11:50:18.437 INFO kablam!     |
Oct 12 11:50:18.437 INFO kablam! 112 |     let mut s = String::from("hello s");
Oct 12 11:50:18.437 INFO kablam!     |         ----^
Oct 12 11:50:18.437 INFO kablam!     |         |
Oct 12 11:50:18.437 INFO kablam!     |         help: remove this `mut`
Oct 12 11:50:18.437 INFO kablam!     |
Oct 12 11:50:18.437 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 12 11:50:18.437 INFO kablam! 
Oct 12 11:50:18.488 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
Oct 12 11:50:18.491 INFO kablam! su: No module specific data is present
Oct 12 11:50:19.036 INFO running `"docker" "rm" "-f" "51f1284b48502fb12ed1a88bc3fa9a1951b646b8b1647e1a55c1e2052ac5e6c3"`
Oct 12 11:50:19.315 INFO blam! 51f1284b48502fb12ed1a88bc3fa9a1951b646b8b1647e1a55c1e2052ac5e6c3