Nov 30 22:49:48.250 INFO testing tperdue321/rust_ownership against master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61 for beta-1.31-5
Nov 30 22:49:48.250 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt 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 22:49:48.486 INFO [stdout] ec852d0e146a55d95000381a6f26010211116d698417b01e3034a3d2fb09588c
Nov 30 22:49:48.496 INFO running `"docker" "start" "-a" "ec852d0e146a55d95000381a6f26010211116d698417b01e3034a3d2fb09588c"`
Nov 30 22:49:48.936 INFO [stderr] usermod: no changes
Nov 30 22:49:48.963 INFO [stderr]    Compiling ownership v0.1.0 (/source)
Nov 30 22:49:49.155 INFO [stderr] warning: unused variable: `string`
Nov 30 22:49:49.155 INFO [stderr]   --> src/main.rs:13:13
Nov 30 22:49:49.155 INFO [stderr]    |
Nov 30 22:49:49.155 INFO [stderr] 13 |         let string = "hello"; // string is valid from here forward
Nov 30 22:49:49.155 INFO [stderr]    |             ^^^^^^ help: consider using `_string` instead
Nov 30 22:49:49.155 INFO [stderr]    |
Nov 30 22:49:49.155 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 22:49:49.155 INFO [stderr] 
Nov 30 22:49:49.155 INFO [stderr] warning: unused variable: `s2`
Nov 30 22:49:49.155 INFO [stderr]   --> src/main.rs:40:9
Nov 30 22:49:49.155 INFO [stderr]    |
Nov 30 22:49:49.155 INFO [stderr] 40 |     let s2 = s1;
Nov 30 22:49:49.155 INFO [stderr]    |         ^^ help: consider using `_s2` instead
Nov 30 22:49:49.155 INFO [stderr] 
Nov 30 22:49:49.155 INFO [stderr] warning: unused variable: `s1`
Nov 30 22:49:49.155 INFO [stderr]   --> src/main.rs:68:9
Nov 30 22:49:49.155 INFO [stderr]    |
Nov 30 22:49:49.155 INFO [stderr] 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Nov 30 22:49:49.155 INFO [stderr]    |         ^^ help: consider using `_s1` instead
Nov 30 22:49:49.155 INFO [stderr] 
Nov 30 22:49:49.155 INFO [stderr] warning: unused variable: `r1`
Nov 30 22:49:49.155 INFO [stderr]   --> src/main.rs:98:9
Nov 30 22:49:49.155 INFO [stderr]    |
Nov 30 22:49:49.155 INFO [stderr] 98 |     let r1 = &mut s2;
Nov 30 22:49:49.155 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Nov 30 22:49:49.155 INFO [stderr] 
Nov 30 22:49:49.155 INFO [stderr] warning: unused variable: `r3`
Nov 30 22:49:49.155 INFO [stderr]    --> src/main.rs:107:13
Nov 30 22:49:49.155 INFO [stderr]     |
Nov 30 22:49:49.155 INFO [stderr] 107 |         let r3 = &mut s3;
Nov 30 22:49:49.155 INFO [stderr]     |             ^^ help: consider using `_r3` instead
Nov 30 22:49:49.155 INFO [stderr] 
Nov 30 22:49:49.155 INFO [stderr] warning: unused variable: `r4`
Nov 30 22:49:49.155 INFO [stderr]    --> src/main.rs:110:9
Nov 30 22:49:49.155 INFO [stderr]     |
Nov 30 22:49:49.155 INFO [stderr] 110 |     let r4 = &mut s3;
Nov 30 22:49:49.155 INFO [stderr]     |         ^^ help: consider using `_r4` instead
Nov 30 22:49:49.155 INFO [stderr] 
Nov 30 22:49:49.155 INFO [stderr] warning: unused variable: `r1`
Nov 30 22:49:49.155 INFO [stderr]    --> src/main.rs:113:9
Nov 30 22:49:49.155 INFO [stderr]     |
Nov 30 22:49:49.155 INFO [stderr] 113 |     let r1 = &s; // immutable ref
Nov 30 22:49:49.155 INFO [stderr]     |         ^^ help: consider using `_r1` instead
Nov 30 22:49:49.155 INFO [stderr] 
Nov 30 22:49:49.155 INFO [stderr] warning: unused variable: `r2`
Nov 30 22:49:49.155 INFO [stderr]    --> src/main.rs:114:9
Nov 30 22:49:49.155 INFO [stderr]     |
Nov 30 22:49:49.155 INFO [stderr] 114 |     let r2 = &s; // second because as many refs can read the same data safely
Nov 30 22:49:49.155 INFO [stderr]     |         ^^ help: consider using `_r2` instead
Nov 30 22:49:49.155 INFO [stderr] 
Nov 30 22:49:49.155 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:49.155 INFO [stderr]    --> src/main.rs:140:9
Nov 30 22:49:49.155 INFO [stderr]     |
Nov 30 22:49:49.155 INFO [stderr] 140 |     let slice = &s[0..2];   // same
Nov 30 22:49:49.155 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:49.155 INFO [stderr] 
Nov 30 22:49:49.155 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:49.155 INFO [stderr]    --> src/main.rs:141:9
Nov 30 22:49:49.155 INFO [stderr]     |
Nov 30 22:49:49.155 INFO [stderr] 141 |     let slice = &s[..2];    // same
Nov 30 22:49:49.155 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:49.156 INFO [stderr] 
Nov 30 22:49:49.156 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:49.156 INFO [stderr]    --> src/main.rs:145:9
Nov 30 22:49:49.156 INFO [stderr]     |
Nov 30 22:49:49.156 INFO [stderr] 145 |     let slice = &s[2..len]; // same
Nov 30 22:49:49.156 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:49.156 INFO [stderr] 
Nov 30 22:49:49.156 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:49.156 INFO [stderr]    --> src/main.rs:146:9
Nov 30 22:49:49.156 INFO [stderr]     |
Nov 30 22:49:49.156 INFO [stderr] 146 |     let slice = &s[2..];    // same
Nov 30 22:49:49.156 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:49.156 INFO [stderr] 
Nov 30 22:49:49.156 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:49.156 INFO [stderr]    --> src/main.rs:148:9
Nov 30 22:49:49.156 INFO [stderr]     |
Nov 30 22:49:49.156 INFO [stderr] 148 |     let slice = &s[0..len]; // same
Nov 30 22:49:49.156 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:49.156 INFO [stderr] 
Nov 30 22:49:49.159 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:49.159 INFO [stderr]    --> src/main.rs:149:9
Nov 30 22:49:49.159 INFO [stderr]     |
Nov 30 22:49:49.159 INFO [stderr] 149 |     let slice = &s[..];     // same
Nov 30 22:49:49.159 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:49.159 INFO [stderr] 
Nov 30 22:49:49.159 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:49.159 INFO [stderr]    --> src/main.rs:166:9
Nov 30 22:49:49.159 INFO [stderr]     |
Nov 30 22:49:49.159 INFO [stderr] 166 |     let slice = &a[0..2];
Nov 30 22:49:49.159 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:49.159 INFO [stderr] 
Nov 30 22:49:49.171 INFO [stderr] warning: variable does not need to be mutable
Nov 30 22:49:49.171 INFO [stderr]    --> src/main.rs:112:9
Nov 30 22:49:49.171 INFO [stderr]     |
Nov 30 22:49:49.171 INFO [stderr] 112 |     let mut s = String::from("hello s");
Nov 30 22:49:49.171 INFO [stderr]     |         ----^
Nov 30 22:49:49.171 INFO [stderr]     |         |
Nov 30 22:49:49.171 INFO [stderr]     |         help: remove this `mut`
Nov 30 22:49:49.171 INFO [stderr]     |
Nov 30 22:49:49.171 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 22:49:49.171 INFO [stderr] 
Nov 30 22:49:49.564 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
Nov 30 22:49:49.566 INFO [stderr] su: No module specific data is present
Nov 30 22:49:49.799 INFO running `"docker" "inspect" "ec852d0e146a55d95000381a6f26010211116d698417b01e3034a3d2fb09588c"`
Nov 30 22:49:49.939 INFO running `"docker" "rm" "-f" "ec852d0e146a55d95000381a6f26010211116d698417b01e3034a3d2fb09588c"`
Nov 30 22:49:50.053 INFO [stdout] ec852d0e146a55d95000381a6f26010211116d698417b01e3034a3d2fb09588c
Nov 30 22:49:50.055 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt 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 22:49:50.270 INFO [stdout] 90d292976565cb544fe03b5b92d74811f0e2a29a1200564b229bb40d249a1197
Nov 30 22:49:50.272 INFO running `"docker" "start" "-a" "90d292976565cb544fe03b5b92d74811f0e2a29a1200564b229bb40d249a1197"`
Nov 30 22:49:50.703 INFO [stderr] usermod: no changes
Nov 30 22:49:50.723 INFO [stderr]    Compiling ownership v0.1.0 (/source)
Nov 30 22:49:50.919 INFO [stderr] warning: unused variable: `string`
Nov 30 22:49:50.919 INFO [stderr]   --> src/main.rs:13:13
Nov 30 22:49:50.919 INFO [stderr]    |
Nov 30 22:49:50.919 INFO [stderr] 13 |         let string = "hello"; // string is valid from here forward
Nov 30 22:49:50.919 INFO [stderr]    |             ^^^^^^ help: consider using `_string` instead
Nov 30 22:49:50.919 INFO [stderr]    |
Nov 30 22:49:50.920 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.920 INFO [stderr] warning: unused variable: `s2`
Nov 30 22:49:50.920 INFO [stderr]   --> src/main.rs:40:9
Nov 30 22:49:50.920 INFO [stderr]    |
Nov 30 22:49:50.920 INFO [stderr] 40 |     let s2 = s1;
Nov 30 22:49:50.920 INFO [stderr]    |         ^^ help: consider using `_s2` instead
Nov 30 22:49:50.920 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `s1`
Nov 30 22:49:50.921 INFO [stderr]   --> src/main.rs:68:9
Nov 30 22:49:50.921 INFO [stderr]    |
Nov 30 22:49:50.921 INFO [stderr] 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Nov 30 22:49:50.921 INFO [stderr]    |         ^^ help: consider using `_s1` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `r1`
Nov 30 22:49:50.921 INFO [stderr]   --> src/main.rs:98:9
Nov 30 22:49:50.921 INFO [stderr]    |
Nov 30 22:49:50.921 INFO [stderr] 98 |     let r1 = &mut s2;
Nov 30 22:49:50.921 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `r3`
Nov 30 22:49:50.921 INFO [stderr]    --> src/main.rs:107:13
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr] 107 |         let r3 = &mut s3;
Nov 30 22:49:50.921 INFO [stderr]     |             ^^ help: consider using `_r3` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `r4`
Nov 30 22:49:50.921 INFO [stderr]    --> src/main.rs:110:9
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr] 110 |     let r4 = &mut s3;
Nov 30 22:49:50.921 INFO [stderr]     |         ^^ help: consider using `_r4` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `r1`
Nov 30 22:49:50.921 INFO [stderr]    --> src/main.rs:113:9
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr] 113 |     let r1 = &s; // immutable ref
Nov 30 22:49:50.921 INFO [stderr]     |         ^^ help: consider using `_r1` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `r2`
Nov 30 22:49:50.921 INFO [stderr]    --> src/main.rs:114:9
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr] 114 |     let r2 = &s; // second because as many refs can read the same data safely
Nov 30 22:49:50.921 INFO [stderr]     |         ^^ help: consider using `_r2` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.921 INFO [stderr]    --> src/main.rs:140:9
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr] 140 |     let slice = &s[0..2];   // same
Nov 30 22:49:50.921 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.921 INFO [stderr]    --> src/main.rs:141:9
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr] 141 |     let slice = &s[..2];    // same
Nov 30 22:49:50.921 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.921 INFO [stderr]    --> src/main.rs:145:9
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr] 145 |     let slice = &s[2..len]; // same
Nov 30 22:49:50.921 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.921 INFO [stderr]    --> src/main.rs:146:9
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr] 146 |     let slice = &s[2..];    // same
Nov 30 22:49:50.921 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.921 INFO [stderr]    --> src/main.rs:148:9
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr] 148 |     let slice = &s[0..len]; // same
Nov 30 22:49:50.921 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.921 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.921 INFO [stderr]    --> src/main.rs:149:9
Nov 30 22:49:50.921 INFO [stderr]     |
Nov 30 22:49:50.921 INFO [stderr] 149 |     let slice = &s[..];     // same
Nov 30 22:49:50.921 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.921 INFO [stderr] 
Nov 30 22:49:50.923 INFO [stderr] warning: unused variable: `slice`
Nov 30 22:49:50.923 INFO [stderr]    --> src/main.rs:166:9
Nov 30 22:49:50.923 INFO [stderr]     |
Nov 30 22:49:50.923 INFO [stderr] 166 |     let slice = &a[0..2];
Nov 30 22:49:50.923 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Nov 30 22:49:50.923 INFO [stderr] 
Nov 30 22:49:50.934 INFO [stderr] warning: variable does not need to be mutable
Nov 30 22:49:50.934 INFO [stderr]    --> src/main.rs:112:9
Nov 30 22:49:50.934 INFO [stderr]     |
Nov 30 22:49:50.934 INFO [stderr] 112 |     let mut s = String::from("hello s");
Nov 30 22:49:50.934 INFO [stderr]     |         ----^
Nov 30 22:49:50.934 INFO [stderr]     |         |
Nov 30 22:49:50.934 INFO [stderr]     |         help: remove this `mut`
Nov 30 22:49:50.934 INFO [stderr]     |
Nov 30 22:49:50.934 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 30 22:49:50.934 INFO [stderr] 
Nov 30 22:49:51.343 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
Nov 30 22:49:51.346 INFO [stderr] su: No module specific data is present
Nov 30 22:49:51.596 INFO running `"docker" "inspect" "90d292976565cb544fe03b5b92d74811f0e2a29a1200564b229bb40d249a1197"`
Nov 30 22:49:51.767 INFO running `"docker" "rm" "-f" "90d292976565cb544fe03b5b92d74811f0e2a29a1200564b229bb40d249a1197"`
Nov 30 22:49:51.852 INFO [stdout] 90d292976565cb544fe03b5b92d74811f0e2a29a1200564b229bb40d249a1197
Nov 30 22:49:51.854 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-0/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/beta-1.31-5/master#8940af3cea4a9a9deabcaf843b2f8cad9a83fc61:/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 +8940af3cea4a9a9deabcaf843b2f8cad9a83fc61-alt 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 22:49:52.023 INFO [stdout] 8e6c7afcfa6878a2f3c6a90172a906e3ed900900ed6726f304f66fe4cbffe9dc
Nov 30 22:49:52.025 INFO running `"docker" "start" "-a" "8e6c7afcfa6878a2f3c6a90172a906e3ed900900ed6726f304f66fe4cbffe9dc"`
Nov 30 22:49:52.528 INFO [stderr] usermod: no changes
Nov 30 22:49:52.560 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Nov 30 22:49:52.561 INFO [stderr]      Running /target/debug/deps/ownership-8db1741ecaaab5e3
Nov 30 22:49:52.562 INFO [stdout] 
Nov 30 22:49:52.562 INFO [stdout] running 0 tests
Nov 30 22:49:52.562 INFO [stdout] 
Nov 30 22:49:52.563 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 30 22:49:52.563 INFO [stdout] 
Nov 30 22:49:52.564 INFO [stderr] su: No module specific data is present
Nov 30 22:49:52.835 INFO running `"docker" "inspect" "8e6c7afcfa6878a2f3c6a90172a906e3ed900900ed6726f304f66fe4cbffe9dc"`
Nov 30 22:49:52.935 INFO running `"docker" "rm" "-f" "8e6c7afcfa6878a2f3c6a90172a906e3ed900900ed6726f304f66fe4cbffe9dc"`
Nov 30 22:49:53.022 INFO [stdout] 8e6c7afcfa6878a2f3c6a90172a906e3ed900900ed6726f304f66fe4cbffe9dc
