Dec 05 03:50:42.981 INFO testing tperdue321/rust_ownership against try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468 for pr-56514
Dec 05 03:50:42.981 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt build --frozen" "-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"`
Dec 05 03:50:43.261 INFO [stdout] b80768c0120b9264ef92dcd21d2d9a4bda4a5a1a9306c0ac658df3c4320d5678
Dec 05 03:50:43.266 INFO running `"docker" "start" "-a" "b80768c0120b9264ef92dcd21d2d9a4bda4a5a1a9306c0ac658df3c4320d5678"`
Dec 05 03:50:44.260 INFO [stderr] usermod: no changes
Dec 05 03:50:44.292 INFO [stderr]    Compiling ownership v0.1.0 (/source)
Dec 05 03:50:44.461 INFO [stderr] warning: unused variable: `string`
Dec 05 03:50:44.461 INFO [stderr]   --> src/main.rs:13:13
Dec 05 03:50:44.461 INFO [stderr]    |
Dec 05 03:50:44.461 INFO [stderr] 13 |         let string = "hello"; // string is valid from here forward
Dec 05 03:50:44.461 INFO [stderr]    |             ^^^^^^ help: consider using `_string` instead
Dec 05 03:50:44.461 INFO [stderr]    |
Dec 05 03:50:44.461 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 03:50:44.461 INFO [stderr] 
Dec 05 03:50:44.461 INFO [stderr] warning: unused variable: `s2`
Dec 05 03:50:44.461 INFO [stderr]   --> src/main.rs:40:9
Dec 05 03:50:44.461 INFO [stderr]    |
Dec 05 03:50:44.461 INFO [stderr] 40 |     let s2 = s1;
Dec 05 03:50:44.461 INFO [stderr]    |         ^^ help: consider using `_s2` instead
Dec 05 03:50:44.461 INFO [stderr] 
Dec 05 03:50:44.461 INFO [stderr] warning: unused variable: `s1`
Dec 05 03:50:44.461 INFO [stderr]   --> src/main.rs:68:9
Dec 05 03:50:44.461 INFO [stderr]    |
Dec 05 03:50:44.461 INFO [stderr] 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Dec 05 03:50:44.461 INFO [stderr]    |         ^^ help: consider using `_s1` instead
Dec 05 03:50:44.461 INFO [stderr] 
Dec 05 03:50:44.461 INFO [stderr] warning: unused variable: `r1`
Dec 05 03:50:44.461 INFO [stderr]   --> src/main.rs:98:9
Dec 05 03:50:44.461 INFO [stderr]    |
Dec 05 03:50:44.461 INFO [stderr] 98 |     let r1 = &mut s2;
Dec 05 03:50:44.462 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Dec 05 03:50:44.462 INFO [stderr] 
Dec 05 03:50:44.462 INFO [stderr] warning: unused variable: `r3`
Dec 05 03:50:44.462 INFO [stderr]    --> src/main.rs:107:13
Dec 05 03:50:44.462 INFO [stderr]     |
Dec 05 03:50:44.462 INFO [stderr] 107 |         let r3 = &mut s3;
Dec 05 03:50:44.462 INFO [stderr]     |             ^^ help: consider using `_r3` instead
Dec 05 03:50:44.462 INFO [stderr] 
Dec 05 03:50:44.462 INFO [stderr] warning: unused variable: `r4`
Dec 05 03:50:44.462 INFO [stderr]    --> src/main.rs:110:9
Dec 05 03:50:44.462 INFO [stderr]     |
Dec 05 03:50:44.462 INFO [stderr] 110 |     let r4 = &mut s3;
Dec 05 03:50:44.462 INFO [stderr]     |         ^^ help: consider using `_r4` instead
Dec 05 03:50:44.462 INFO [stderr] 
Dec 05 03:50:44.462 INFO [stderr] warning: unused variable: `r1`
Dec 05 03:50:44.462 INFO [stderr]    --> src/main.rs:113:9
Dec 05 03:50:44.462 INFO [stderr]     |
Dec 05 03:50:44.462 INFO [stderr] 113 |     let r1 = &s; // immutable ref
Dec 05 03:50:44.462 INFO [stderr]     |         ^^ help: consider using `_r1` instead
Dec 05 03:50:44.462 INFO [stderr] 
Dec 05 03:50:44.462 INFO [stderr] warning: unused variable: `r2`
Dec 05 03:50:44.462 INFO [stderr]    --> src/main.rs:114:9
Dec 05 03:50:44.462 INFO [stderr]     |
Dec 05 03:50:44.462 INFO [stderr] 114 |     let r2 = &s; // second because as many refs can read the same data safely
Dec 05 03:50:44.462 INFO [stderr]     |         ^^ help: consider using `_r2` instead
Dec 05 03:50:44.462 INFO [stderr] 
Dec 05 03:50:44.462 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:44.462 INFO [stderr]    --> src/main.rs:140:9
Dec 05 03:50:44.462 INFO [stderr]     |
Dec 05 03:50:44.462 INFO [stderr] 140 |     let slice = &s[0..2];   // same
Dec 05 03:50:44.462 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:44.462 INFO [stderr] 
Dec 05 03:50:44.462 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:44.462 INFO [stderr]    --> src/main.rs:141:9
Dec 05 03:50:44.462 INFO [stderr]     |
Dec 05 03:50:44.462 INFO [stderr] 141 |     let slice = &s[..2];    // same
Dec 05 03:50:44.462 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:44.462 INFO [stderr] 
Dec 05 03:50:44.462 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:44.462 INFO [stderr]    --> src/main.rs:145:9
Dec 05 03:50:44.462 INFO [stderr]     |
Dec 05 03:50:44.462 INFO [stderr] 145 |     let slice = &s[2..len]; // same
Dec 05 03:50:44.462 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:44.462 INFO [stderr] 
Dec 05 03:50:44.462 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:44.462 INFO [stderr]    --> src/main.rs:146:9
Dec 05 03:50:44.462 INFO [stderr]     |
Dec 05 03:50:44.462 INFO [stderr] 146 |     let slice = &s[2..];    // same
Dec 05 03:50:44.462 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:44.462 INFO [stderr] 
Dec 05 03:50:44.464 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:44.464 INFO [stderr]    --> src/main.rs:148:9
Dec 05 03:50:44.464 INFO [stderr]     |
Dec 05 03:50:44.464 INFO [stderr] 148 |     let slice = &s[0..len]; // same
Dec 05 03:50:44.464 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:44.464 INFO [stderr] 
Dec 05 03:50:44.464 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:44.464 INFO [stderr]    --> src/main.rs:149:9
Dec 05 03:50:44.464 INFO [stderr]     |
Dec 05 03:50:44.464 INFO [stderr] 149 |     let slice = &s[..];     // same
Dec 05 03:50:44.464 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:44.464 INFO [stderr] 
Dec 05 03:50:44.464 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:44.464 INFO [stderr]    --> src/main.rs:166:9
Dec 05 03:50:44.464 INFO [stderr]     |
Dec 05 03:50:44.464 INFO [stderr] 166 |     let slice = &a[0..2];
Dec 05 03:50:44.464 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:44.464 INFO [stderr] 
Dec 05 03:50:44.479 INFO [stderr] warning: variable does not need to be mutable
Dec 05 03:50:44.479 INFO [stderr]    --> src/main.rs:112:9
Dec 05 03:50:44.479 INFO [stderr]     |
Dec 05 03:50:44.479 INFO [stderr] 112 |     let mut s = String::from("hello s");
Dec 05 03:50:44.479 INFO [stderr]     |         ----^
Dec 05 03:50:44.479 INFO [stderr]     |         |
Dec 05 03:50:44.479 INFO [stderr]     |         help: remove this `mut`
Dec 05 03:50:44.479 INFO [stderr]     |
Dec 05 03:50:44.481 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 03:50:44.481 INFO [stderr] 
Dec 05 03:50:44.799 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
Dec 05 03:50:44.801 INFO [stderr] su: No module specific data is present
Dec 05 03:50:45.102 INFO running `"docker" "inspect" "b80768c0120b9264ef92dcd21d2d9a4bda4a5a1a9306c0ac658df3c4320d5678"`
Dec 05 03:50:45.177 INFO running `"docker" "rm" "-f" "b80768c0120b9264ef92dcd21d2d9a4bda4a5a1a9306c0ac658df3c4320d5678"`
Dec 05 03:50:45.263 INFO [stdout] b80768c0120b9264ef92dcd21d2d9a4bda4a5a1a9306c0ac658df3c4320d5678
Dec 05 03:50:45.265 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen --no-run" "-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"`
Dec 05 03:50:45.391 INFO [stdout] 071d836ddb527478fb42906c8f9fe072d4bf0e074c1826c02ea707ee102248e8
Dec 05 03:50:45.393 INFO running `"docker" "start" "-a" "071d836ddb527478fb42906c8f9fe072d4bf0e074c1826c02ea707ee102248e8"`
Dec 05 03:50:45.832 INFO [stderr] usermod: no changes
Dec 05 03:50:45.867 INFO [stderr]    Compiling ownership v0.1.0 (/source)
Dec 05 03:50:46.049 INFO [stderr] warning: unused variable: `string`
Dec 05 03:50:46.049 INFO [stderr]   --> src/main.rs:13:13
Dec 05 03:50:46.049 INFO [stderr]    |
Dec 05 03:50:46.049 INFO [stderr] 13 |         let string = "hello"; // string is valid from here forward
Dec 05 03:50:46.049 INFO [stderr]    |             ^^^^^^ help: consider using `_string` instead
Dec 05 03:50:46.049 INFO [stderr]    |
Dec 05 03:50:46.049 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 03:50:46.049 INFO [stderr] 
Dec 05 03:50:46.049 INFO [stderr] warning: unused variable: `s2`
Dec 05 03:50:46.049 INFO [stderr]   --> src/main.rs:40:9
Dec 05 03:50:46.049 INFO [stderr]    |
Dec 05 03:50:46.049 INFO [stderr] 40 |     let s2 = s1;
Dec 05 03:50:46.049 INFO [stderr]    |         ^^ help: consider using `_s2` instead
Dec 05 03:50:46.049 INFO [stderr] 
Dec 05 03:50:46.049 INFO [stderr] warning: unused variable: `s1`
Dec 05 03:50:46.049 INFO [stderr]   --> src/main.rs:68:9
Dec 05 03:50:46.049 INFO [stderr]    |
Dec 05 03:50:46.049 INFO [stderr] 68 |     let s1 = gives_ownership();         // gives_ownership moves its return
Dec 05 03:50:46.049 INFO [stderr]    |         ^^ help: consider using `_s1` instead
Dec 05 03:50:46.049 INFO [stderr] 
Dec 05 03:50:46.049 INFO [stderr] warning: unused variable: `r1`
Dec 05 03:50:46.049 INFO [stderr]   --> src/main.rs:98:9
Dec 05 03:50:46.049 INFO [stderr]    |
Dec 05 03:50:46.050 INFO [stderr] 98 |     let r1 = &mut s2;
Dec 05 03:50:46.050 INFO [stderr]    |         ^^ help: consider using `_r1` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `r3`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:107:13
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 107 |         let r3 = &mut s3;
Dec 05 03:50:46.050 INFO [stderr]     |             ^^ help: consider using `_r3` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `r4`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:110:9
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 110 |     let r4 = &mut s3;
Dec 05 03:50:46.050 INFO [stderr]     |         ^^ help: consider using `_r4` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `r1`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:113:9
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 113 |     let r1 = &s; // immutable ref
Dec 05 03:50:46.050 INFO [stderr]     |         ^^ help: consider using `_r1` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `r2`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:114:9
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 114 |     let r2 = &s; // second because as many refs can read the same data safely
Dec 05 03:50:46.050 INFO [stderr]     |         ^^ help: consider using `_r2` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:140:9
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 140 |     let slice = &s[0..2];   // same
Dec 05 03:50:46.050 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:141:9
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 141 |     let slice = &s[..2];    // same
Dec 05 03:50:46.050 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:145:9
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 145 |     let slice = &s[2..len]; // same
Dec 05 03:50:46.050 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:146:9
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 146 |     let slice = &s[2..];    // same
Dec 05 03:50:46.050 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:148:9
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 148 |     let slice = &s[0..len]; // same
Dec 05 03:50:46.050 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:149:9
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 149 |     let slice = &s[..];     // same
Dec 05 03:50:46.050 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.050 INFO [stderr] warning: unused variable: `slice`
Dec 05 03:50:46.050 INFO [stderr]    --> src/main.rs:166:9
Dec 05 03:50:46.050 INFO [stderr]     |
Dec 05 03:50:46.050 INFO [stderr] 166 |     let slice = &a[0..2];
Dec 05 03:50:46.050 INFO [stderr]     |         ^^^^^ help: consider using `_slice` instead
Dec 05 03:50:46.050 INFO [stderr] 
Dec 05 03:50:46.066 INFO [stderr] warning: variable does not need to be mutable
Dec 05 03:50:46.066 INFO [stderr]    --> src/main.rs:112:9
Dec 05 03:50:46.066 INFO [stderr]     |
Dec 05 03:50:46.066 INFO [stderr] 112 |     let mut s = String::from("hello s");
Dec 05 03:50:46.066 INFO [stderr]     |         ----^
Dec 05 03:50:46.066 INFO [stderr]     |         |
Dec 05 03:50:46.066 INFO [stderr]     |         help: remove this `mut`
Dec 05 03:50:46.066 INFO [stderr]     |
Dec 05 03:50:46.066 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 05 03:50:46.066 INFO [stderr] 
Dec 05 03:50:46.323 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
Dec 05 03:50:46.326 INFO [stderr] su: No module specific data is present
Dec 05 03:50:46.702 INFO running `"docker" "inspect" "071d836ddb527478fb42906c8f9fe072d4bf0e074c1826c02ea707ee102248e8"`
Dec 05 03:50:46.798 INFO running `"docker" "rm" "-f" "071d836ddb527478fb42906c8f9fe072d4bf0e074c1826c02ea707ee102248e8"`
Dec 05 03:50:46.901 INFO [stdout] 071d836ddb527478fb42906c8f9fe072d4bf0e074c1826c02ea707ee102248e8
Dec 05 03:50:46.903 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56514/try#6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468:/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 +6eb0fd3ac58f9b16bddb9924a17c3b6c156aa468-alt test --frozen" "-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"`
Dec 05 03:50:47.050 INFO [stdout] 40e768ec1fe3759c540e318ec60b45e282e98e53142d6e87556fef141461dc90
Dec 05 03:50:47.052 INFO running `"docker" "start" "-a" "40e768ec1fe3759c540e318ec60b45e282e98e53142d6e87556fef141461dc90"`
Dec 05 03:50:47.544 INFO [stderr] usermod: no changes
Dec 05 03:50:47.569 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 05 03:50:47.570 INFO [stderr]      Running /target/debug/deps/ownership-d8fe1548bde0a3d4
Dec 05 03:50:47.574 INFO [stdout] 
Dec 05 03:50:47.574 INFO [stdout] running 0 tests
Dec 05 03:50:47.574 INFO [stdout] 
Dec 05 03:50:47.574 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 03:50:47.574 INFO [stdout] 
Dec 05 03:50:47.576 INFO [stderr] su: No module specific data is present
Dec 05 03:50:47.872 INFO running `"docker" "inspect" "40e768ec1fe3759c540e318ec60b45e282e98e53142d6e87556fef141461dc90"`
Dec 05 03:50:48.018 INFO running `"docker" "rm" "-f" "40e768ec1fe3759c540e318ec60b45e282e98e53142d6e87556fef141461dc90"`
Dec 05 03:50:48.106 INFO [stdout] 40e768ec1fe3759c540e318ec60b45e282e98e53142d6e87556fef141461dc90