Dec 05 03:50:43.153 INFO testing tperdue321/rust_ownership against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514 Dec 05 03:50:43.153 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-0/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 03:50:43.364 INFO [stdout] 4b0d7abff4720c3909473aefbb080ad97ecd1609ef297a76ded33fe6ba075bf1 Dec 05 03:50:43.366 INFO running `"docker" "start" "-a" "4b0d7abff4720c3909473aefbb080ad97ecd1609ef297a76ded33fe6ba075bf1"` Dec 05 03:50:44.528 INFO [stderr] usermod: no changes Dec 05 03:50:44.564 INFO [stderr] Compiling ownership v0.1.0 (/source) Dec 05 03:50:44.707 INFO [stderr] warning: unused variable: `string` Dec 05 03:50:44.707 INFO [stderr] --> src/main.rs:13:13 Dec 05 03:50:44.707 INFO [stderr] | Dec 05 03:50:44.707 INFO [stderr] 13 | let string = "hello"; // string is valid from here forward Dec 05 03:50:44.707 INFO [stderr] | ^^^^^^ help: consider using `_string` instead Dec 05 03:50:44.707 INFO [stderr] | Dec 05 03:50:44.707 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 05 03:50:44.707 INFO [stderr] Dec 05 03:50:44.707 INFO [stderr] warning: unused variable: `s2` Dec 05 03:50:44.707 INFO [stderr] --> src/main.rs:40:9 Dec 05 03:50:44.707 INFO [stderr] | Dec 05 03:50:44.707 INFO [stderr] 40 | let s2 = s1; Dec 05 03:50:44.707 INFO [stderr] | ^^ help: consider using `_s2` instead Dec 05 03:50:44.707 INFO [stderr] Dec 05 03:50:44.707 INFO [stderr] warning: unused variable: `s1` Dec 05 03:50:44.707 INFO [stderr] --> src/main.rs:68:9 Dec 05 03:50:44.707 INFO [stderr] | Dec 05 03:50:44.707 INFO [stderr] 68 | let s1 = gives_ownership(); // gives_ownership moves its return Dec 05 03:50:44.707 INFO [stderr] | ^^ help: consider using `_s1` instead Dec 05 03:50:44.707 INFO [stderr] Dec 05 03:50:44.707 INFO [stderr] warning: unused variable: `r1` Dec 05 03:50:44.707 INFO [stderr] --> src/main.rs:98:9 Dec 05 03:50:44.707 INFO [stderr] | Dec 05 03:50:44.707 INFO [stderr] 98 | let r1 = &mut s2; Dec 05 03:50:44.707 INFO [stderr] | ^^ help: consider using `_r1` instead Dec 05 03:50:44.707 INFO [stderr] Dec 05 03:50:44.715 INFO [stderr] warning: unused variable: `r3` Dec 05 03:50:44.715 INFO [stderr] --> src/main.rs:107:13 Dec 05 03:50:44.715 INFO [stderr] | Dec 05 03:50:44.715 INFO [stderr] 107 | let r3 = &mut s3; Dec 05 03:50:44.715 INFO [stderr] | ^^ help: consider using `_r3` instead Dec 05 03:50:44.715 INFO [stderr] Dec 05 03:50:44.715 INFO [stderr] warning: unused variable: `r4` Dec 05 03:50:44.715 INFO [stderr] --> src/main.rs:110:9 Dec 05 03:50:44.715 INFO [stderr] | Dec 05 03:50:44.715 INFO [stderr] 110 | let r4 = &mut s3; Dec 05 03:50:44.715 INFO [stderr] | ^^ help: consider using `_r4` instead Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:44.716 INFO [stderr] warning: unused variable: `r1` Dec 05 03:50:44.716 INFO [stderr] --> src/main.rs:113:9 Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] 113 | let r1 = &s; // immutable ref Dec 05 03:50:44.716 INFO [stderr] | ^^ help: consider using `_r1` instead Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:44.716 INFO [stderr] warning: unused variable: `r2` Dec 05 03:50:44.716 INFO [stderr] --> src/main.rs:114:9 Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] 114 | let r2 = &s; // second because as many refs can read the same data safely Dec 05 03:50:44.716 INFO [stderr] | ^^ help: consider using `_r2` instead Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:44.716 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:44.716 INFO [stderr] --> src/main.rs:140:9 Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] 140 | let slice = &s[0..2]; // same Dec 05 03:50:44.716 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:44.716 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:44.716 INFO [stderr] --> src/main.rs:141:9 Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] 141 | let slice = &s[..2]; // same Dec 05 03:50:44.716 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:44.716 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:44.716 INFO [stderr] --> src/main.rs:145:9 Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] 145 | let slice = &s[2..len]; // same Dec 05 03:50:44.716 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:44.716 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:44.716 INFO [stderr] --> src/main.rs:146:9 Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] 146 | let slice = &s[2..]; // same Dec 05 03:50:44.716 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:44.716 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:44.716 INFO [stderr] --> src/main.rs:148:9 Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] 148 | let slice = &s[0..len]; // same Dec 05 03:50:44.716 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:44.716 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:44.716 INFO [stderr] --> src/main.rs:149:9 Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] 149 | let slice = &s[..]; // same Dec 05 03:50:44.716 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:44.716 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:44.716 INFO [stderr] --> src/main.rs:166:9 Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] 166 | let slice = &a[0..2]; Dec 05 03:50:44.716 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:44.716 INFO [stderr] warning: variable does not need to be mutable Dec 05 03:50:44.716 INFO [stderr] --> src/main.rs:112:9 Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] 112 | let mut s = String::from("hello s"); Dec 05 03:50:44.716 INFO [stderr] | ----^ Dec 05 03:50:44.716 INFO [stderr] | | Dec 05 03:50:44.716 INFO [stderr] | help: remove this `mut` Dec 05 03:50:44.716 INFO [stderr] | Dec 05 03:50:44.716 INFO [stderr] = note: #[warn(unused_mut)] on by default Dec 05 03:50:44.716 INFO [stderr] Dec 05 03:50:45.005 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.45s Dec 05 03:50:45.007 INFO [stderr] su: No module specific data is present Dec 05 03:50:45.289 INFO running `"docker" "inspect" "4b0d7abff4720c3909473aefbb080ad97ecd1609ef297a76ded33fe6ba075bf1"` Dec 05 03:50:45.354 INFO running `"docker" "rm" "-f" "4b0d7abff4720c3909473aefbb080ad97ecd1609ef297a76ded33fe6ba075bf1"` Dec 05 03:50:45.448 INFO [stdout] 4b0d7abff4720c3909473aefbb080ad97ecd1609ef297a76ded33fe6ba075bf1 Dec 05 03:50:45.450 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-0/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 03:50:45.624 INFO [stdout] 33f8c7bbf49334cf4efb2ed9a65769c177cf3425bbeb27f91c4f7e77c91b5971 Dec 05 03:50:45.630 INFO running `"docker" "start" "-a" "33f8c7bbf49334cf4efb2ed9a65769c177cf3425bbeb27f91c4f7e77c91b5971"` Dec 05 03:50:46.056 INFO [stderr] usermod: no changes Dec 05 03:50:46.095 INFO [stderr] Compiling ownership v0.1.0 (/source) Dec 05 03:50:46.230 INFO [stderr] warning: unused variable: `string` Dec 05 03:50:46.230 INFO [stderr] --> src/main.rs:13:13 Dec 05 03:50:46.230 INFO [stderr] | Dec 05 03:50:46.230 INFO [stderr] 13 | let string = "hello"; // string is valid from here forward Dec 05 03:50:46.230 INFO [stderr] | ^^^^^^ help: consider using `_string` instead Dec 05 03:50:46.230 INFO [stderr] | Dec 05 03:50:46.230 INFO [stderr] = note: #[warn(unused_variables)] on by default Dec 05 03:50:46.230 INFO [stderr] Dec 05 03:50:46.230 INFO [stderr] warning: unused variable: `s2` Dec 05 03:50:46.230 INFO [stderr] --> src/main.rs:40:9 Dec 05 03:50:46.230 INFO [stderr] | Dec 05 03:50:46.230 INFO [stderr] 40 | let s2 = s1; Dec 05 03:50:46.230 INFO [stderr] | ^^ help: consider using `_s2` instead Dec 05 03:50:46.230 INFO [stderr] Dec 05 03:50:46.230 INFO [stderr] warning: unused variable: `s1` Dec 05 03:50:46.230 INFO [stderr] --> src/main.rs:68:9 Dec 05 03:50:46.230 INFO [stderr] | Dec 05 03:50:46.230 INFO [stderr] 68 | let s1 = gives_ownership(); // gives_ownership moves its return Dec 05 03:50:46.230 INFO [stderr] | ^^ help: consider using `_s1` instead Dec 05 03:50:46.230 INFO [stderr] Dec 05 03:50:46.230 INFO [stderr] warning: unused variable: `r1` Dec 05 03:50:46.230 INFO [stderr] --> src/main.rs:98:9 Dec 05 03:50:46.230 INFO [stderr] | Dec 05 03:50:46.230 INFO [stderr] 98 | let r1 = &mut s2; Dec 05 03:50:46.230 INFO [stderr] | ^^ help: consider using `_r1` instead Dec 05 03:50:46.230 INFO [stderr] Dec 05 03:50:46.230 INFO [stderr] warning: unused variable: `r3` Dec 05 03:50:46.230 INFO [stderr] --> src/main.rs:107:13 Dec 05 03:50:46.230 INFO [stderr] | Dec 05 03:50:46.230 INFO [stderr] 107 | let r3 = &mut s3; Dec 05 03:50:46.230 INFO [stderr] | ^^ help: consider using `_r3` instead Dec 05 03:50:46.230 INFO [stderr] Dec 05 03:50:46.230 INFO [stderr] warning: unused variable: `r4` Dec 05 03:50:46.230 INFO [stderr] --> src/main.rs:110:9 Dec 05 03:50:46.230 INFO [stderr] | Dec 05 03:50:46.230 INFO [stderr] 110 | let r4 = &mut s3; Dec 05 03:50:46.230 INFO [stderr] | ^^ help: consider using `_r4` instead Dec 05 03:50:46.230 INFO [stderr] Dec 05 03:50:46.230 INFO [stderr] warning: unused variable: `r1` Dec 05 03:50:46.230 INFO [stderr] --> src/main.rs:113:9 Dec 05 03:50:46.230 INFO [stderr] | Dec 05 03:50:46.230 INFO [stderr] 113 | let r1 = &s; // immutable ref Dec 05 03:50:46.230 INFO [stderr] | ^^ help: consider using `_r1` instead Dec 05 03:50:46.230 INFO [stderr] Dec 05 03:50:46.232 INFO [stderr] warning: unused variable: `r2` Dec 05 03:50:46.232 INFO [stderr] --> src/main.rs:114:9 Dec 05 03:50:46.232 INFO [stderr] | Dec 05 03:50:46.232 INFO [stderr] 114 | let r2 = &s; // second because as many refs can read the same data safely Dec 05 03:50:46.232 INFO [stderr] | ^^ help: consider using `_r2` instead Dec 05 03:50:46.232 INFO [stderr] Dec 05 03:50:46.232 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:46.232 INFO [stderr] --> src/main.rs:140:9 Dec 05 03:50:46.232 INFO [stderr] | Dec 05 03:50:46.232 INFO [stderr] 140 | let slice = &s[0..2]; // same Dec 05 03:50:46.232 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:46.232 INFO [stderr] Dec 05 03:50:46.232 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:46.232 INFO [stderr] --> src/main.rs:141:9 Dec 05 03:50:46.232 INFO [stderr] | Dec 05 03:50:46.232 INFO [stderr] 141 | let slice = &s[..2]; // same Dec 05 03:50:46.232 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:46.232 INFO [stderr] Dec 05 03:50:46.232 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:46.232 INFO [stderr] --> src/main.rs:145:9 Dec 05 03:50:46.232 INFO [stderr] | Dec 05 03:50:46.232 INFO [stderr] 145 | let slice = &s[2..len]; // same Dec 05 03:50:46.232 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:46.232 INFO [stderr] Dec 05 03:50:46.232 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:46.232 INFO [stderr] --> src/main.rs:146:9 Dec 05 03:50:46.232 INFO [stderr] | Dec 05 03:50:46.232 INFO [stderr] 146 | let slice = &s[2..]; // same Dec 05 03:50:46.232 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:46.232 INFO [stderr] Dec 05 03:50:46.232 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:46.232 INFO [stderr] --> src/main.rs:148:9 Dec 05 03:50:46.232 INFO [stderr] | Dec 05 03:50:46.232 INFO [stderr] 148 | let slice = &s[0..len]; // same Dec 05 03:50:46.232 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:46.232 INFO [stderr] Dec 05 03:50:46.232 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:46.232 INFO [stderr] --> src/main.rs:149:9 Dec 05 03:50:46.232 INFO [stderr] | Dec 05 03:50:46.233 INFO [stderr] 149 | let slice = &s[..]; // same Dec 05 03:50:46.233 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:46.233 INFO [stderr] Dec 05 03:50:46.233 INFO [stderr] warning: unused variable: `slice` Dec 05 03:50:46.233 INFO [stderr] --> src/main.rs:166:9 Dec 05 03:50:46.233 INFO [stderr] | Dec 05 03:50:46.233 INFO [stderr] 166 | let slice = &a[0..2]; Dec 05 03:50:46.233 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Dec 05 03:50:46.233 INFO [stderr] Dec 05 03:50:46.239 INFO [stderr] warning: variable does not need to be mutable Dec 05 03:50:46.239 INFO [stderr] --> src/main.rs:112:9 Dec 05 03:50:46.239 INFO [stderr] | Dec 05 03:50:46.239 INFO [stderr] 112 | let mut s = String::from("hello s"); Dec 05 03:50:46.239 INFO [stderr] | ----^ Dec 05 03:50:46.239 INFO [stderr] | | Dec 05 03:50:46.239 INFO [stderr] | help: remove this `mut` Dec 05 03:50:46.239 INFO [stderr] | Dec 05 03:50:46.240 INFO [stderr] = note: #[warn(unused_mut)] on by default Dec 05 03:50:46.240 INFO [stderr] Dec 05 03:50:46.457 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.38s Dec 05 03:50:46.459 INFO [stderr] su: No module specific data is present Dec 05 03:50:46.754 INFO running `"docker" "inspect" "33f8c7bbf49334cf4efb2ed9a65769c177cf3425bbeb27f91c4f7e77c91b5971"` Dec 05 03:50:46.863 INFO running `"docker" "rm" "-f" "33f8c7bbf49334cf4efb2ed9a65769c177cf3425bbeb27f91c4f7e77c91b5971"` Dec 05 03:50:46.964 INFO [stdout] 33f8c7bbf49334cf4efb2ed9a65769c177cf3425bbeb27f91c4f7e77c91b5971 Dec 05 03:50:46.966 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-0/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/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 +906deae0790bd18681b937fe9a141a3c26cf1855-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 03:50:47.136 INFO [stdout] f154bfa25db71b461a6c35a168431fe292a8cd631bf7223f255d8296d956e167 Dec 05 03:50:47.138 INFO running `"docker" "start" "-a" "f154bfa25db71b461a6c35a168431fe292a8cd631bf7223f255d8296d956e167"` Dec 05 03:50:47.554 INFO [stderr] usermod: no changes Dec 05 03:50:47.580 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s Dec 05 03:50:47.580 INFO [stderr] Running /target/debug/deps/ownership-dfc067625f25bf28 Dec 05 03:50:47.582 INFO [stdout] Dec 05 03:50:47.582 INFO [stdout] running 0 tests Dec 05 03:50:47.582 INFO [stdout] Dec 05 03:50:47.582 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out Dec 05 03:50:47.582 INFO [stdout] Dec 05 03:50:47.584 INFO [stderr] su: No module specific data is present Dec 05 03:50:47.841 INFO running `"docker" "inspect" "f154bfa25db71b461a6c35a168431fe292a8cd631bf7223f255d8296d956e167"` Dec 05 03:50:47.944 INFO running `"docker" "rm" "-f" "f154bfa25db71b461a6c35a168431fe292a8cd631bf7223f255d8296d956e167"` Dec 05 03:50:48.041 INFO [stdout] f154bfa25db71b461a6c35a168431fe292a8cd631bf7223f255d8296d956e167