Nov 30 22:49:50.102 INFO testing tperdue321/rust_ownership against 1.30.1 for beta-1.31-5
Nov 30 22:49:50.102 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/1.30.1:/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 +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 30 22:49:50.304 INFO [stdout] 87f644a3fc6436706e13c88375c356cc5aebf71f8bc21bf3278975075418c29a
Nov 30 22:49:50.306 INFO running `"docker" "start" "-a" "87f644a3fc6436706e13c88375c356cc5aebf71f8bc21bf3278975075418c29a"`
Nov 30 22:49:50.697 INFO [stderr] usermod: no changes
Nov 30 22:49:50.724 INFO [stderr]    Compiling ownership v0.1.0 (/source)
Nov 30 22:49:50.908 INFO [stderr] warning: unused variable: `string`
Nov 30 22:49:50.908 INFO [stderr]   --> src/main.rs:13:13
Nov 30 22:49:50.908 INFO [stderr]    |
Nov 30 22:49:50.908 INFO [stderr] 13 |         let string = "hello"; // string is valid from here forward
Nov 30 22:49:50.908 INFO [stderr]    |             ^^^^^^ help: consider using `_string` instead
Nov 30 22:49:50.908 INFO [stderr]    |
Nov 30 22:49:50.908 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 22:49:50.908 INFO [stderr] 
Nov 30 22:49:50.908 INFO [stderr] warning: unused variable: `s2`
Nov 30 22:49:50.908 INFO [stderr]   --> src/main.rs:40:9
Nov 30 22:49:50.908 INFO [stderr]    |
Nov 30 22:49:50.908 INFO [stderr] 40 |     let s2 = s1;
Nov 30 22:49:50.908 INFO [stderr]    |         ^^ help: consider using `_s2` instead
Nov 30 22:49:50.908 INFO [stderr] 
Nov 30 22:49:50.911 INFO [stderr] warning: unused variable: `s1`
Nov 30 22:49:50.912 INFO [stderr]   --> src/main.rs:68:9
Nov 30 22:49:50.912 INFO [stderr]    |
Nov 30 22:49:50.912 INFO [stderr] 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Nov 30 22:49:50.913 INFO [stderr]    |         ^^ help: consider using `_s1` instead
Nov 30 22:49:50.913 INFO [stderr] 
Nov 30 22:49:50.913 INFO [stderr] warning: unused variable: `r1`
Nov 30 22:49:50.914 INFO [stderr]   --> src/main.rs:98:9
Nov 30 22:49:50.914 INFO [stderr]    |
Nov 30 22:49:50.914 INFO [stderr] 98 |     let r1 = &mut s2;
Nov 30 22:49:50.915 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Nov 30 22:49:50.915 INFO [stderr] 
Nov 30 22:49:50.916 INFO [stderr] warning: unused variable: `r3`
Nov 30 22:49:50.916 INFO [stderr]    --> src/main.rs:107:13
Nov 30 22:49:50.916 INFO [stderr]     |
Nov 30 22:49:50.916 INFO [stderr] 107 |         let r3 = &mut s3;
Nov 30 22:49:50.917 INFO [stderr]     |             ^^ help: consider using `_r3` instead
Nov 30 22:49:50.917 INFO [stderr] 
Nov 30 22:49:50.917 INFO [stderr] warning: unused variable: `r4`
Nov 30 22:49:50.918 INFO [stderr]    --> src/main.rs:110:9
Nov 30 22:49:50.918 INFO [stderr]     |
Nov 30 22:49:50.918 INFO [stderr] 110 |     let r4 = &mut s3;
Nov 30 22:49:50.919 INFO [stderr]     |         ^^ help: consider using `_r4` instead
Nov 30 22:49:50.919 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: unused variable: `r1`
Nov 30 22:49:50.920 INFO [stderr]    --> src/main.rs:113:9
Nov 30 22:49:50.920 INFO [stderr]     |
Nov 30 22:49:50.920 INFO [stderr] 113 |     let r1 = &s; // immutable ref
Nov 30 22:49:50.920 INFO [stderr]     |         ^^ help: consider using `_r1` instead
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: unused variable: `r2`
Nov 30 22:49:50.920 INFO [stderr]    --> src/main.rs:114:9
Nov 30 22:49:50.920 INFO [stderr]     |
Nov 30 22:49:50.920 INFO [stderr] 114 |     let r2 = &s; // second because as many refs can read the same data safely
Nov 30 22:49:50.920 INFO [stderr]     |         ^^ help: consider using `_r2` instead
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.920 INFO [stderr]    --> src/main.rs:140:9
Nov 30 22:49:50.920 INFO [stderr]     |
Nov 30 22:49:50.920 INFO [stderr] 140 |     let slice = &s[0..2];   // same
Nov 30 22:49:50.920 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.920 INFO [stderr]    --> src/main.rs:141:9
Nov 30 22:49:50.920 INFO [stderr]     |
Nov 30 22:49:50.920 INFO [stderr] 141 |     let slice = &s[..2];    // same
Nov 30 22:49:50.920 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.920 INFO [stderr]    --> src/main.rs:145:9
Nov 30 22:49:50.920 INFO [stderr]     |
Nov 30 22:49:50.920 INFO [stderr] 145 |     let slice = &s[2..len]; // same
Nov 30 22:49:50.920 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.920 INFO [stderr]    --> src/main.rs:146:9
Nov 30 22:49:50.920 INFO [stderr]     |
Nov 30 22:49:50.920 INFO [stderr] 146 |     let slice = &s[2..];    // same
Nov 30 22:49:50.920 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.920 INFO [stderr]    --> src/main.rs:148:9
Nov 30 22:49:50.920 INFO [stderr]     |
Nov 30 22:49:50.920 INFO [stderr] 148 |     let slice = &s[0..len]; // same
Nov 30 22:49:50.920 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.920 INFO [stderr]    --> src/main.rs:149:9
Nov 30 22:49:50.920 INFO [stderr]     |
Nov 30 22:49:50.920 INFO [stderr] 149 |     let slice = &s[..];     // same
Nov 30 22:49:50.920 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.920 INFO [stderr]    --> src/main.rs:166:9
Nov 30 22:49:50.920 INFO [stderr]     |
Nov 30 22:49:50.920 INFO [stderr] 166 |     let slice = &a[0..2];
Nov 30 22:49:50.920 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: variable does not need to be mutable
Nov 30 22:49:50.920 INFO [stderr]    --> src/main.rs:112:9
Nov 30 22:49:50.920 INFO [stderr]     |
Nov 30 22:49:50.920 INFO [stderr] 112 |     let mut s = String::from("hello s");
Nov 30 22:49:50.920 INFO [stderr]     |         ----^
Nov 30 22:49:50.921 INFO [stderr]     |         |
Nov 30 22:49:50.921 INFO [stderr]     |         help: remove this `mut`
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:51.295 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.58s
Nov 30 22:49:51.297 INFO [stderr] su: No module specific data is present
Nov 30 22:49:51.536 INFO running `"docker" "inspect" "87f644a3fc6436706e13c88375c356cc5aebf71f8bc21bf3278975075418c29a"`
Nov 30 22:49:51.621 INFO running `"docker" "rm" "-f" "87f644a3fc6436706e13c88375c356cc5aebf71f8bc21bf3278975075418c29a"`
Nov 30 22:49:51.783 INFO [stdout] 87f644a3fc6436706e13c88375c356cc5aebf71f8bc21bf3278975075418c29a
Nov 30 22:49:51.786 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 30 22:49:51.957 INFO [stdout] ba876cbfc53e2ac0d96819763ded135ef0d403035cffda1cb08d2dde8591e229
Nov 30 22:49:51.959 INFO running `"docker" "start" "-a" "ba876cbfc53e2ac0d96819763ded135ef0d403035cffda1cb08d2dde8591e229"`
Nov 30 22:49:52.384 INFO [stderr] usermod: no changes
Nov 30 22:49:52.405 INFO [stderr]    Compiling ownership v0.1.0 (/source)
Nov 30 22:49:52.592 INFO [stderr] warning: unused variable: `string`
Nov 30 22:49:52.592 INFO [stderr]   --> src/main.rs:13:13
Nov 30 22:49:52.592 INFO [stderr]    |
Nov 30 22:49:52.592 INFO [stderr] 13 |         let string = "hello"; // string is valid from here forward
Nov 30 22:49:52.592 INFO [stderr]    |             ^^^^^^ help: consider using `_string` instead
Nov 30 22:49:52.592 INFO [stderr]    |
Nov 30 22:49:52.592 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 22:49:52.592 INFO [stderr] 
Nov 30 22:49:52.592 INFO [stderr] warning: unused variable: `s2`
Nov 30 22:49:52.592 INFO [stderr]   --> src/main.rs:40:9
Nov 30 22:49:52.592 INFO [stderr]    |
Nov 30 22:49:52.592 INFO [stderr] 40 |     let s2 = s1;
Nov 30 22:49:52.592 INFO [stderr]    |         ^^ help: consider using `_s2` instead
Nov 30 22:49:52.592 INFO [stderr] 
Nov 30 22:49:52.592 INFO [stderr] warning: unused variable: `s1`
Nov 30 22:49:52.592 INFO [stderr]   --> src/main.rs:68:9
Nov 30 22:49:52.592 INFO [stderr]    |
Nov 30 22:49:52.592 INFO [stderr] 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Nov 30 22:49:52.592 INFO [stderr]    |         ^^ help: consider using `_s1` instead
Nov 30 22:49:52.592 INFO [stderr] 
Nov 30 22:49:52.592 INFO [stderr] warning: unused variable: `r1`
Nov 30 22:49:52.592 INFO [stderr]   --> src/main.rs:98:9
Nov 30 22:49:52.592 INFO [stderr]    |
Nov 30 22:49:52.592 INFO [stderr] 98 |     let r1 = &mut s2;
Nov 30 22:49:52.592 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Nov 30 22:49:52.592 INFO [stderr] 
Nov 30 22:49:52.592 INFO [stderr] warning: unused variable: `r3`
Nov 30 22:49:52.592 INFO [stderr]    --> src/main.rs:107:13
Nov 30 22:49:52.592 INFO [stderr]     |
Nov 30 22:49:52.592 INFO [stderr] 107 |         let r3 = &mut s3;
Nov 30 22:49:52.592 INFO [stderr]     |             ^^ help: consider using `_r3` instead
Nov 30 22:49:52.592 INFO [stderr] 
Nov 30 22:49:52.592 INFO [stderr] warning: unused variable: `r4`
Nov 30 22:49:52.592 INFO [stderr]    --> src/main.rs:110:9
Nov 30 22:49:52.592 INFO [stderr]     |
Nov 30 22:49:52.592 INFO [stderr] 110 |     let r4 = &mut s3;
Nov 30 22:49:52.592 INFO [stderr]     |         ^^ help: consider using `_r4` instead
Nov 30 22:49:52.592 INFO [stderr] 
Nov 30 22:49:52.593 INFO [stderr] warning: unused variable: `r1`
Nov 30 22:49:52.593 INFO [stderr]    --> src/main.rs:113:9
Nov 30 22:49:52.593 INFO [stderr]     |
Nov 30 22:49:52.593 INFO [stderr] 113 |     let r1 = &s; // immutable ref
Nov 30 22:49:52.593 INFO [stderr]     |         ^^ help: consider using `_r1` instead
Nov 30 22:49:52.593 INFO [stderr] 
Nov 30 22:49:52.593 INFO [stderr] warning: unused variable: `r2`
Nov 30 22:49:52.593 INFO [stderr]    --> src/main.rs:114:9
Nov 30 22:49:52.593 INFO [stderr]     |
Nov 30 22:49:52.593 INFO [stderr] 114 |     let r2 = &s; // second because as many refs can read the same data safely
Nov 30 22:49:52.593 INFO [stderr]     |         ^^ help: consider using `_r2` instead
Nov 30 22:49:52.593 INFO [stderr] 
Nov 30 22:49:52.593 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:52.593 INFO [stderr]    --> src/main.rs:140:9
Nov 30 22:49:52.593 INFO [stderr]     |
Nov 30 22:49:52.593 INFO [stderr] 140 |     let slice = &s[0..2];   // same
Nov 30 22:49:52.593 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:52.593 INFO [stderr] 
Nov 30 22:49:52.593 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:52.593 INFO [stderr]    --> src/main.rs:141:9
Nov 30 22:49:52.593 INFO [stderr]     |
Nov 30 22:49:52.593 INFO [stderr] 141 |     let slice = &s[..2];    // same
Nov 30 22:49:52.593 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:52.593 INFO [stderr] 
Nov 30 22:49:52.593 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:52.593 INFO [stderr]    --> src/main.rs:145:9
Nov 30 22:49:52.593 INFO [stderr]     |
Nov 30 22:49:52.593 INFO [stderr] 145 |     let slice = &s[2..len]; // same
Nov 30 22:49:52.593 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:52.593 INFO [stderr] 
Nov 30 22:49:52.593 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:52.593 INFO [stderr]    --> src/main.rs:146:9
Nov 30 22:49:52.593 INFO [stderr]     |
Nov 30 22:49:52.593 INFO [stderr] 146 |     let slice = &s[2..];    // same
Nov 30 22:49:52.593 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:52.593 INFO [stderr] 
Nov 30 22:49:52.593 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:52.593 INFO [stderr]    --> src/main.rs:148:9
Nov 30 22:49:52.593 INFO [stderr]     |
Nov 30 22:49:52.593 INFO [stderr] 148 |     let slice = &s[0..len]; // same
Nov 30 22:49:52.593 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:52.593 INFO [stderr] 
Nov 30 22:49:52.593 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:52.593 INFO [stderr]    --> src/main.rs:149:9
Nov 30 22:49:52.593 INFO [stderr]     |
Nov 30 22:49:52.593 INFO [stderr] 149 |     let slice = &s[..];     // same
Nov 30 22:49:52.593 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:52.593 INFO [stderr] 
Nov 30 22:49:52.593 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:52.593 INFO [stderr]    --> src/main.rs:166:9
Nov 30 22:49:52.593 INFO [stderr]     |
Nov 30 22:49:52.593 INFO [stderr] 166 |     let slice = &a[0..2];
Nov 30 22:49:52.593 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:52.593 INFO [stderr] 
Nov 30 22:49:52.600 INFO [stderr] warning: variable does not need to be mutable
Nov 30 22:49:52.600 INFO [stderr]    --> src/main.rs:112:9
Nov 30 22:49:52.600 INFO [stderr]     |
Nov 30 22:49:52.600 INFO [stderr] 112 |     let mut s = String::from("hello s");
Nov 30 22:49:52.600 INFO [stderr]     |         ----^
Nov 30 22:49:52.600 INFO [stderr]     |         |
Nov 30 22:49:52.600 INFO [stderr]     |         help: remove this `mut`
Nov 30 22:49:52.600 INFO [stderr]     |
Nov 30 22:49:52.600 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 22:49:52.600 INFO [stderr] 
Nov 30 22:49:52.925 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
Nov 30 22:49:52.926 INFO [stderr] su: No module specific data is present
Nov 30 22:49:53.228 INFO running `"docker" "inspect" "ba876cbfc53e2ac0d96819763ded135ef0d403035cffda1cb08d2dde8591e229"`
Nov 30 22:49:53.329 INFO running `"docker" "rm" "-f" "ba876cbfc53e2ac0d96819763ded135ef0d403035cffda1cb08d2dde8591e229"`
Nov 30 22:49:53.436 INFO [stdout] ba876cbfc53e2ac0d96819763ded135ef0d403035cffda1cb08d2dde8591e229
Nov 30 22:49:53.438 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-2/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 30 22:49:53.603 INFO [stdout] aabb6eb4ef8aba0f3680d9620f3ef74f6e77016f9c3953dd7824f8ba3218e0e9
Nov 30 22:49:53.605 INFO running `"docker" "start" "-a" "aabb6eb4ef8aba0f3680d9620f3ef74f6e77016f9c3953dd7824f8ba3218e0e9"`
Nov 30 22:49:54.591 INFO [stderr] usermod: no changes
Nov 30 22:49:54.635 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Nov 30 22:49:54.635 INFO [stderr]      Running /target/debug/deps/ownership-fc6553af56852e47
Nov 30 22:49:54.640 INFO [stdout] 
Nov 30 22:49:54.640 INFO [stdout] running 0 tests
Nov 30 22:49:54.640 INFO [stdout] 
Nov 30 22:49:54.640 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 30 22:49:54.640 INFO [stdout] 
Nov 30 22:49:54.642 INFO [stderr] su: No module specific data is present
Nov 30 22:49:55.073 INFO running `"docker" "inspect" "aabb6eb4ef8aba0f3680d9620f3ef74f6e77016f9c3953dd7824f8ba3218e0e9"`
Nov 30 22:49:55.287 INFO running `"docker" "rm" "-f" "aabb6eb4ef8aba0f3680d9620f3ef74f6e77016f9c3953dd7824f8ba3218e0e9"`
Nov 30 22:49:55.412 INFO [stdout] aabb6eb4ef8aba0f3680d9620f3ef74f6e77016f9c3953dd7824f8ba3218e0e9
