Oct 31 19:16:04.063 INFO checking tperdue321/rust_ownership against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Oct 31 19:16:04.064 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-0/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 31 19:16:04.481 INFO blam! 063983967c25d72b309689771b62a70d6c534ab6e0fcfd756e0ab00cd17baea9
Oct 31 19:16:04.484 INFO running `"docker" "start" "-a" "063983967c25d72b309689771b62a70d6c534ab6e0fcfd756e0ab00cd17baea9"`
Oct 31 19:16:06.058 INFO kablam! usermod: no changes
Oct 31 19:16:06.142 INFO kablam!     Checking ownership v0.1.0 (/source)
Oct 31 19:16:06.541 INFO kablam! warning: unused variable: `string`
Oct 31 19:16:06.542 INFO kablam!   --> src/main.rs:13:13
Oct 31 19:16:06.542 INFO kablam!    |
Oct 31 19:16:06.542 INFO kablam! 13 |         let string = "hello"; // string is valid from here forward
Oct 31 19:16:06.543 INFO kablam!    |             ^^^^^^ help: consider using `_string` instead
Oct 31 19:16:06.543 INFO kablam!    |
Oct 31 19:16:06.543 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 31 19:16:06.544 INFO kablam! 
Oct 31 19:16:06.544 INFO kablam! warning: unused variable: `s2`
Oct 31 19:16:06.544 INFO kablam!   --> src/main.rs:40:9
Oct 31 19:16:06.545 INFO kablam!    |
Oct 31 19:16:06.545 INFO kablam! 40 |     let s2 = s1;
Oct 31 19:16:06.545 INFO kablam!    |         ^^ help: consider using `_s2` instead
Oct 31 19:16:06.546 INFO kablam! 
Oct 31 19:16:06.546 INFO kablam! warning: unused variable: `s1`
Oct 31 19:16:06.546 INFO kablam!   --> src/main.rs:68:9
Oct 31 19:16:06.547 INFO kablam!    |
Oct 31 19:16:06.547 INFO kablam! 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Oct 31 19:16:06.547 INFO kablam!    |         ^^ help: consider using `_s1` instead
Oct 31 19:16:06.548 INFO kablam! 
Oct 31 19:16:06.548 INFO kablam! warning: unused variable: `r1`
Oct 31 19:16:06.548 INFO kablam!   --> src/main.rs:98:9
Oct 31 19:16:06.549 INFO kablam!    |
Oct 31 19:16:06.549 INFO kablam! 98 |     let r1 = &mut s2;
Oct 31 19:16:06.549 INFO kablam!    |         ^^ help: consider using `_r1` instead
Oct 31 19:16:06.550 INFO kablam! 
Oct 31 19:16:06.550 INFO kablam! warning: unused variable: `r3`
Oct 31 19:16:06.550 INFO kablam!    --> src/main.rs:107:13
Oct 31 19:16:06.550 INFO kablam!     |
Oct 31 19:16:06.551 INFO kablam! 107 |         let r3 = &mut s3;
Oct 31 19:16:06.551 INFO kablam!     |             ^^ help: consider using `_r3` instead
Oct 31 19:16:06.551 INFO kablam! 
Oct 31 19:16:06.552 INFO kablam! warning: unused variable: `r4`
Oct 31 19:16:06.552 INFO kablam!    --> src/main.rs:110:9
Oct 31 19:16:06.552 INFO kablam!     |
Oct 31 19:16:06.552 INFO kablam! 110 |     let r4 = &mut s3;
Oct 31 19:16:06.553 INFO kablam!     |         ^^ help: consider using `_r4` instead
Oct 31 19:16:06.553 INFO kablam! 
Oct 31 19:16:06.553 INFO kablam! warning: unused variable: `r1`
Oct 31 19:16:06.554 INFO kablam!    --> src/main.rs:113:9
Oct 31 19:16:06.554 INFO kablam!     |
Oct 31 19:16:06.554 INFO kablam! 113 |     let r1 = &s; // immutable ref
Oct 31 19:16:06.555 INFO kablam!     |         ^^ help: consider using `_r1` instead
Oct 31 19:16:06.555 INFO kablam! 
Oct 31 19:16:06.555 INFO kablam! warning: unused variable: `r2`
Oct 31 19:16:06.556 INFO kablam!    --> src/main.rs:114:9
Oct 31 19:16:06.556 INFO kablam!     |
Oct 31 19:16:06.556 INFO kablam! 114 |     let r2 = &s; // second because as many refs can read the same data safely
Oct 31 19:16:06.556 INFO kablam!     |         ^^ help: consider using `_r2` instead
Oct 31 19:16:06.557 INFO kablam! 
Oct 31 19:16:06.557 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.557 INFO kablam!    --> src/main.rs:140:9
Oct 31 19:16:06.558 INFO kablam!     |
Oct 31 19:16:06.558 INFO kablam! 140 |     let slice = &s[0..2];   // same
Oct 31 19:16:06.558 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.559 INFO kablam! 
Oct 31 19:16:06.559 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.559 INFO kablam!    --> src/main.rs:141:9
Oct 31 19:16:06.560 INFO kablam!     |
Oct 31 19:16:06.560 INFO kablam! 141 |     let slice = &s[..2];    // same
Oct 31 19:16:06.560 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.560 INFO kablam! 
Oct 31 19:16:06.561 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.561 INFO kablam!    --> src/main.rs:145:9
Oct 31 19:16:06.561 INFO kablam!     |
Oct 31 19:16:06.561 INFO kablam! 145 |     let slice = &s[2..len]; // same
Oct 31 19:16:06.562 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.562 INFO kablam! 
Oct 31 19:16:06.562 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.562 INFO kablam!    --> src/main.rs:146:9
Oct 31 19:16:06.563 INFO kablam!     |
Oct 31 19:16:06.563 INFO kablam! 146 |     let slice = &s[2..];    // same
Oct 31 19:16:06.563 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.563 INFO kablam! 
Oct 31 19:16:06.564 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.564 INFO kablam!    --> src/main.rs:148:9
Oct 31 19:16:06.564 INFO kablam!     |
Oct 31 19:16:06.565 INFO kablam! 148 |     let slice = &s[0..len]; // same
Oct 31 19:16:06.565 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.565 INFO kablam! 
Oct 31 19:16:06.566 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.566 INFO kablam!    --> src/main.rs:149:9
Oct 31 19:16:06.566 INFO kablam!     |
Oct 31 19:16:06.566 INFO kablam! 149 |     let slice = &s[..];     // same
Oct 31 19:16:06.567 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.567 INFO kablam! 
Oct 31 19:16:06.567 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.567 INFO kablam!    --> src/main.rs:166:9
Oct 31 19:16:06.568 INFO kablam!     |
Oct 31 19:16:06.568 INFO kablam! 166 |     let slice = &a[0..2];
Oct 31 19:16:06.568 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.568 INFO kablam! 
Oct 31 19:16:06.569 INFO kablam! warning: variable does not need to be mutable
Oct 31 19:16:06.569 INFO kablam!    --> src/main.rs:112:9
Oct 31 19:16:06.569 INFO kablam!     |
Oct 31 19:16:06.569 INFO kablam! 112 |     let mut s = String::from("hello s");
Oct 31 19:16:06.570 INFO kablam!     |         ----^
Oct 31 19:16:06.570 INFO kablam!     |         |
Oct 31 19:16:06.570 INFO kablam!     |         help: remove this `mut`
Oct 31 19:16:06.571 INFO kablam!     |
Oct 31 19:16:06.571 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 31 19:16:06.571 INFO kablam! 
Oct 31 19:16:06.652 INFO kablam! warning: unused variable: `string`
Oct 31 19:16:06.652 INFO kablam!   --> src/main.rs:13:13
Oct 31 19:16:06.653 INFO kablam!    |
Oct 31 19:16:06.653 INFO kablam! 13 |         let string = "hello"; // string is valid from here forward
Oct 31 19:16:06.653 INFO kablam!    |             ^^^^^^ help: consider using `_string` instead
Oct 31 19:16:06.653 INFO kablam!    |
Oct 31 19:16:06.653 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `s2`
Oct 31 19:16:06.653 INFO kablam!   --> src/main.rs:40:9
Oct 31 19:16:06.653 INFO kablam!    |
Oct 31 19:16:06.653 INFO kablam! 40 |     let s2 = s1;
Oct 31 19:16:06.653 INFO kablam!    |         ^^ help: consider using `_s2` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `s1`
Oct 31 19:16:06.653 INFO kablam!   --> src/main.rs:68:9
Oct 31 19:16:06.653 INFO kablam!    |
Oct 31 19:16:06.653 INFO kablam! 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Oct 31 19:16:06.653 INFO kablam!    |         ^^ help: consider using `_s1` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `r1`
Oct 31 19:16:06.653 INFO kablam!   --> src/main.rs:98:9
Oct 31 19:16:06.653 INFO kablam!    |
Oct 31 19:16:06.653 INFO kablam! 98 |     let r1 = &mut s2;
Oct 31 19:16:06.653 INFO kablam!    |         ^^ help: consider using `_r1` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `r3`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:107:13
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.653 INFO kablam! 107 |         let r3 = &mut s3;
Oct 31 19:16:06.653 INFO kablam!     |             ^^ help: consider using `_r3` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `r4`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:110:9
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.653 INFO kablam! 110 |     let r4 = &mut s3;
Oct 31 19:16:06.653 INFO kablam!     |         ^^ help: consider using `_r4` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `r1`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:113:9
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.653 INFO kablam! 113 |     let r1 = &s; // immutable ref
Oct 31 19:16:06.653 INFO kablam!     |         ^^ help: consider using `_r1` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `r2`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:114:9
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.653 INFO kablam! 114 |     let r2 = &s; // second because as many refs can read the same data safely
Oct 31 19:16:06.653 INFO kablam!     |         ^^ help: consider using `_r2` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:140:9
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.653 INFO kablam! 140 |     let slice = &s[0..2];   // same
Oct 31 19:16:06.653 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:141:9
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.653 INFO kablam! 141 |     let slice = &s[..2];    // same
Oct 31 19:16:06.653 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:145:9
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.653 INFO kablam! 145 |     let slice = &s[2..len]; // same
Oct 31 19:16:06.653 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:146:9
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.653 INFO kablam! 146 |     let slice = &s[2..];    // same
Oct 31 19:16:06.653 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:148:9
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.653 INFO kablam! 148 |     let slice = &s[0..len]; // same
Oct 31 19:16:06.653 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:149:9
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.653 INFO kablam! 149 |     let slice = &s[..];     // same
Oct 31 19:16:06.653 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.653 INFO kablam! 
Oct 31 19:16:06.653 INFO kablam! warning: unused variable: `slice`
Oct 31 19:16:06.653 INFO kablam!    --> src/main.rs:166:9
Oct 31 19:16:06.653 INFO kablam!     |
Oct 31 19:16:06.654 INFO kablam! 166 |     let slice = &a[0..2];
Oct 31 19:16:06.654 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 31 19:16:06.654 INFO kablam! 
Oct 31 19:16:06.682 INFO kablam! warning: variable does not need to be mutable
Oct 31 19:16:06.682 INFO kablam!    --> src/main.rs:112:9
Oct 31 19:16:06.682 INFO kablam!     |
Oct 31 19:16:06.682 INFO kablam! 112 |     let mut s = String::from("hello s");
Oct 31 19:16:06.682 INFO kablam!     |         ----^
Oct 31 19:16:06.682 INFO kablam!     |         |
Oct 31 19:16:06.682 INFO kablam!     |         help: remove this `mut`
Oct 31 19:16:06.682 INFO kablam!     |
Oct 31 19:16:06.682 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 31 19:16:06.682 INFO kablam! 
Oct 31 19:16:06.712 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
Oct 31 19:16:06.724 INFO kablam! su: No module specific data is present
Oct 31 19:16:07.412 INFO running `"docker" "rm" "-f" "063983967c25d72b309689771b62a70d6c534ab6e0fcfd756e0ab00cd17baea9"`
Oct 31 19:16:07.792 INFO blam! 063983967c25d72b309689771b62a70d6c534ab6e0fcfd756e0ab00cd17baea9