Oct 12 11:50:15.412 INFO checking tperdue321/rust_ownership against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 11:50:15.414 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-1/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-1/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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 11:50:16.030 INFO blam! 66307ce30f2b87421fcfbe71d57516eaee9858bb5ba3b0b265a18285397f118d
Oct 12 11:50:16.040 INFO running `"docker" "start" "-a" "66307ce30f2b87421fcfbe71d57516eaee9858bb5ba3b0b265a18285397f118d"`
Oct 12 11:50:17.241 INFO kablam! usermod: no changes
Oct 12 11:50:17.283 INFO kablam!     Checking ownership v0.1.0 (/source)
Oct 12 11:50:17.587 INFO kablam! warning: unused variable: `string`
Oct 12 11:50:17.587 INFO kablam!   --> src/main.rs:13:13
Oct 12 11:50:17.587 INFO kablam!    |
Oct 12 11:50:17.588 INFO kablam! 13 |         let string = "hello"; // string is valid from here forward
Oct 12 11:50:17.588 INFO kablam!    |             ^^^^^^ help: consider using `_string` instead
Oct 12 11:50:17.588 INFO kablam!    |
Oct 12 11:50:17.588 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 11:50:17.588 INFO kablam! 
Oct 12 11:50:17.588 INFO kablam! warning: unused variable: `s2`
Oct 12 11:50:17.588 INFO kablam!   --> src/main.rs:40:9
Oct 12 11:50:17.589 INFO kablam!    |
Oct 12 11:50:17.589 INFO kablam! 40 |     let s2 = s1;
Oct 12 11:50:17.589 INFO kablam!    |         ^^ help: consider using `_s2` instead
Oct 12 11:50:17.589 INFO kablam! 
Oct 12 11:50:17.589 INFO kablam! warning: unused variable: `s1`
Oct 12 11:50:17.589 INFO kablam!   --> src/main.rs:68:9
Oct 12 11:50:17.590 INFO kablam!    |
Oct 12 11:50:17.590 INFO kablam! 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Oct 12 11:50:17.590 INFO kablam!    |         ^^ help: consider using `_s1` instead
Oct 12 11:50:17.590 INFO kablam! 
Oct 12 11:50:17.590 INFO kablam! warning: unused variable: `r1`
Oct 12 11:50:17.590 INFO kablam!   --> src/main.rs:98:9
Oct 12 11:50:17.590 INFO kablam!    |
Oct 12 11:50:17.591 INFO kablam! 98 |     let r1 = &mut s2;
Oct 12 11:50:17.591 INFO kablam!    |         ^^ help: consider using `_r1` instead
Oct 12 11:50:17.591 INFO kablam! 
Oct 12 11:50:17.591 INFO kablam! warning: unused variable: `r3`
Oct 12 11:50:17.591 INFO kablam!    --> src/main.rs:107:13
Oct 12 11:50:17.591 INFO kablam!     |
Oct 12 11:50:17.591 INFO kablam! 107 |         let r3 = &mut s3;
Oct 12 11:50:17.592 INFO kablam!     |             ^^ help: consider using `_r3` instead
Oct 12 11:50:17.592 INFO kablam! 
Oct 12 11:50:17.592 INFO kablam! warning: unused variable: `r4`
Oct 12 11:50:17.592 INFO kablam!    --> src/main.rs:110:9
Oct 12 11:50:17.592 INFO kablam!     |
Oct 12 11:50:17.592 INFO kablam! 110 |     let r4 = &mut s3;
Oct 12 11:50:17.593 INFO kablam!     |         ^^ help: consider using `_r4` instead
Oct 12 11:50:17.593 INFO kablam! 
Oct 12 11:50:17.593 INFO kablam! warning: unused variable: `r1`
Oct 12 11:50:17.593 INFO kablam!    --> src/main.rs:113:9
Oct 12 11:50:17.593 INFO kablam!     |
Oct 12 11:50:17.593 INFO kablam! 113 |     let r1 = &s; // immutable ref
Oct 12 11:50:17.593 INFO kablam!     |         ^^ help: consider using `_r1` instead
Oct 12 11:50:17.594 INFO kablam! 
Oct 12 11:50:17.594 INFO kablam! warning: unused variable: `r2`
Oct 12 11:50:17.594 INFO kablam!    --> src/main.rs:114:9
Oct 12 11:50:17.594 INFO kablam!     |
Oct 12 11:50:17.594 INFO kablam! 114 |     let r2 = &s; // second because as many refs can read the same data safely
Oct 12 11:50:17.595 INFO kablam!     |         ^^ help: consider using `_r2` instead
Oct 12 11:50:17.595 INFO kablam! 
Oct 12 11:50:17.595 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.596 INFO kablam!    --> src/main.rs:140:9
Oct 12 11:50:17.596 INFO kablam!     |
Oct 12 11:50:17.596 INFO kablam! 140 |     let slice = &s[0..2];   // same
Oct 12 11:50:17.596 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.597 INFO kablam! 
Oct 12 11:50:17.597 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.597 INFO kablam!    --> src/main.rs:141:9
Oct 12 11:50:17.597 INFO kablam!     |
Oct 12 11:50:17.598 INFO kablam! 141 |     let slice = &s[..2];    // same
Oct 12 11:50:17.598 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.598 INFO kablam! 
Oct 12 11:50:17.598 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.599 INFO kablam!    --> src/main.rs:145:9
Oct 12 11:50:17.599 INFO kablam!     |
Oct 12 11:50:17.599 INFO kablam! 145 |     let slice = &s[2..len]; // same
Oct 12 11:50:17.599 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.600 INFO kablam! 
Oct 12 11:50:17.604 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.604 INFO kablam!    --> src/main.rs:146:9
Oct 12 11:50:17.605 INFO kablam!     |
Oct 12 11:50:17.605 INFO kablam! 146 |     let slice = &s[2..];    // same
Oct 12 11:50:17.605 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.605 INFO kablam! 
Oct 12 11:50:17.606 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.606 INFO kablam!    --> src/main.rs:148:9
Oct 12 11:50:17.606 INFO kablam!     |
Oct 12 11:50:17.606 INFO kablam! 148 |     let slice = &s[0..len]; // same
Oct 12 11:50:17.607 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.607 INFO kablam! 
Oct 12 11:50:17.607 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.607 INFO kablam!    --> src/main.rs:149:9
Oct 12 11:50:17.608 INFO kablam!     |
Oct 12 11:50:17.608 INFO kablam! 149 |     let slice = &s[..];     // same
Oct 12 11:50:17.608 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.608 INFO kablam! 
Oct 12 11:50:17.609 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.609 INFO kablam!    --> src/main.rs:166:9
Oct 12 11:50:17.609 INFO kablam!     |
Oct 12 11:50:17.609 INFO kablam! 166 |     let slice = &a[0..2];
Oct 12 11:50:17.610 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.610 INFO kablam! 
Oct 12 11:50:17.610 INFO kablam! warning: variable does not need to be mutable
Oct 12 11:50:17.610 INFO kablam!    --> src/main.rs:112:9
Oct 12 11:50:17.611 INFO kablam!     |
Oct 12 11:50:17.611 INFO kablam! 112 |     let mut s = String::from("hello s");
Oct 12 11:50:17.611 INFO kablam!     |         ----^
Oct 12 11:50:17.611 INFO kablam!     |         |
Oct 12 11:50:17.612 INFO kablam!     |         help: remove this `mut`
Oct 12 11:50:17.612 INFO kablam!     |
Oct 12 11:50:17.612 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 12 11:50:17.612 INFO kablam! 
Oct 12 11:50:17.664 INFO kablam! warning: unused variable: `string`
Oct 12 11:50:17.664 INFO kablam!   --> src/main.rs:13:13
Oct 12 11:50:17.664 INFO kablam!    |
Oct 12 11:50:17.664 INFO kablam! 13 |         let string = "hello"; // string is valid from here forward
Oct 12 11:50:17.664 INFO kablam!    |             ^^^^^^ help: consider using `_string` instead
Oct 12 11:50:17.664 INFO kablam!    |
Oct 12 11:50:17.664 INFO kablam!    = note: #[warn(unused_variables)] on by default
Oct 12 11:50:17.664 INFO kablam! 
Oct 12 11:50:17.664 INFO kablam! warning: unused variable: `s2`
Oct 12 11:50:17.664 INFO kablam!   --> src/main.rs:40:9
Oct 12 11:50:17.664 INFO kablam!    |
Oct 12 11:50:17.664 INFO kablam! 40 |     let s2 = s1;
Oct 12 11:50:17.664 INFO kablam!    |         ^^ help: consider using `_s2` instead
Oct 12 11:50:17.664 INFO kablam! 
Oct 12 11:50:17.664 INFO kablam! warning: unused variable: `s1`
Oct 12 11:50:17.664 INFO kablam!   --> src/main.rs:68:9
Oct 12 11:50:17.664 INFO kablam!    |
Oct 12 11:50:17.664 INFO kablam! 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Oct 12 11:50:17.664 INFO kablam!    |         ^^ help: consider using `_s1` instead
Oct 12 11:50:17.664 INFO kablam! 
Oct 12 11:50:17.664 INFO kablam! warning: unused variable: `r1`
Oct 12 11:50:17.664 INFO kablam!   --> src/main.rs:98:9
Oct 12 11:50:17.664 INFO kablam!    |
Oct 12 11:50:17.664 INFO kablam! 98 |     let r1 = &mut s2;
Oct 12 11:50:17.664 INFO kablam!    |         ^^ help: consider using `_r1` instead
Oct 12 11:50:17.664 INFO kablam! 
Oct 12 11:50:17.664 INFO kablam! warning: unused variable: `r3`
Oct 12 11:50:17.664 INFO kablam!    --> src/main.rs:107:13
Oct 12 11:50:17.664 INFO kablam!     |
Oct 12 11:50:17.664 INFO kablam! 107 |         let r3 = &mut s3;
Oct 12 11:50:17.664 INFO kablam!     |             ^^ help: consider using `_r3` instead
Oct 12 11:50:17.664 INFO kablam! 
Oct 12 11:50:17.664 INFO kablam! warning: unused variable: `r4`
Oct 12 11:50:17.664 INFO kablam!    --> src/main.rs:110:9
Oct 12 11:50:17.664 INFO kablam!     |
Oct 12 11:50:17.664 INFO kablam! 110 |     let r4 = &mut s3;
Oct 12 11:50:17.664 INFO kablam!     |         ^^ help: consider using `_r4` instead
Oct 12 11:50:17.664 INFO kablam! 
Oct 12 11:50:17.664 INFO kablam! warning: unused variable: `r1`
Oct 12 11:50:17.664 INFO kablam!    --> src/main.rs:113:9
Oct 12 11:50:17.664 INFO kablam!     |
Oct 12 11:50:17.664 INFO kablam! 113 |     let r1 = &s; // immutable ref
Oct 12 11:50:17.665 INFO kablam!     |         ^^ help: consider using `_r1` instead
Oct 12 11:50:17.665 INFO kablam! 
Oct 12 11:50:17.665 INFO kablam! warning: unused variable: `r2`
Oct 12 11:50:17.665 INFO kablam!    --> src/main.rs:114:9
Oct 12 11:50:17.665 INFO kablam!     |
Oct 12 11:50:17.665 INFO kablam! 114 |     let r2 = &s; // second because as many refs can read the same data safely
Oct 12 11:50:17.665 INFO kablam!     |         ^^ help: consider using `_r2` instead
Oct 12 11:50:17.665 INFO kablam! 
Oct 12 11:50:17.665 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.665 INFO kablam!    --> src/main.rs:140:9
Oct 12 11:50:17.665 INFO kablam!     |
Oct 12 11:50:17.665 INFO kablam! 140 |     let slice = &s[0..2];   // same
Oct 12 11:50:17.665 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.665 INFO kablam! 
Oct 12 11:50:17.665 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.665 INFO kablam!    --> src/main.rs:141:9
Oct 12 11:50:17.665 INFO kablam!     |
Oct 12 11:50:17.665 INFO kablam! 141 |     let slice = &s[..2];    // same
Oct 12 11:50:17.665 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.665 INFO kablam! 
Oct 12 11:50:17.665 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.665 INFO kablam!    --> src/main.rs:145:9
Oct 12 11:50:17.665 INFO kablam!     |
Oct 12 11:50:17.665 INFO kablam! 145 |     let slice = &s[2..len]; // same
Oct 12 11:50:17.665 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.665 INFO kablam! 
Oct 12 11:50:17.665 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.665 INFO kablam!    --> src/main.rs:146:9
Oct 12 11:50:17.665 INFO kablam!     |
Oct 12 11:50:17.665 INFO kablam! 146 |     let slice = &s[2..];    // same
Oct 12 11:50:17.665 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.665 INFO kablam! 
Oct 12 11:50:17.665 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.665 INFO kablam!    --> src/main.rs:148:9
Oct 12 11:50:17.665 INFO kablam!     |
Oct 12 11:50:17.665 INFO kablam! 148 |     let slice = &s[0..len]; // same
Oct 12 11:50:17.665 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.665 INFO kablam! 
Oct 12 11:50:17.665 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.665 INFO kablam!    --> src/main.rs:149:9
Oct 12 11:50:17.665 INFO kablam!     |
Oct 12 11:50:17.665 INFO kablam! 149 |     let slice = &s[..];     // same
Oct 12 11:50:17.665 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.665 INFO kablam! 
Oct 12 11:50:17.665 INFO kablam! warning: unused variable: `slice`
Oct 12 11:50:17.665 INFO kablam!    --> src/main.rs:166:9
Oct 12 11:50:17.665 INFO kablam!     |
Oct 12 11:50:17.665 INFO kablam! 166 |     let slice = &a[0..2];
Oct 12 11:50:17.665 INFO kablam!     |         ^^^^^ help: consider using `_slice` instead
Oct 12 11:50:17.665 INFO kablam! 
Oct 12 11:50:17.680 INFO kablam! warning: variable does not need to be mutable
Oct 12 11:50:17.680 INFO kablam!    --> src/main.rs:112:9
Oct 12 11:50:17.680 INFO kablam!     |
Oct 12 11:50:17.680 INFO kablam! 112 |     let mut s = String::from("hello s");
Oct 12 11:50:17.680 INFO kablam!     |         ----^
Oct 12 11:50:17.680 INFO kablam!     |         |
Oct 12 11:50:17.680 INFO kablam!     |         help: remove this `mut`
Oct 12 11:50:17.680 INFO kablam!     |
Oct 12 11:50:17.680 INFO kablam!     = note: #[warn(unused_mut)] on by default
Oct 12 11:50:17.680 INFO kablam! 
Oct 12 11:50:17.716 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Oct 12 11:50:17.736 INFO kablam! su: No module specific data is present
Oct 12 11:50:18.364 INFO running `"docker" "rm" "-f" "66307ce30f2b87421fcfbe71d57516eaee9858bb5ba3b0b265a18285397f118d"`
Oct 12 11:50:18.641 INFO blam! 66307ce30f2b87421fcfbe71d57516eaee9858bb5ba3b0b265a18285397f118d