Nov 16 10:17:23.768 INFO testing tperdue321/rust_ownership against try#2e026d6e5d7621634147ad4c8074f1d964dbb1be for pr-55982 Nov 16 10:17:23.768 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-7/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"` Nov 16 10:17:24.149 INFO [stdout] f8253463032a9d7fba4ff6dd6b881fa83ec7c848a286195cb305614d517fbb7c Nov 16 10:17:24.153 INFO running `"docker" "start" "-a" "f8253463032a9d7fba4ff6dd6b881fa83ec7c848a286195cb305614d517fbb7c"` Nov 16 10:17:25.167 INFO [stderr] usermod: no changes Nov 16 10:17:25.215 INFO [stderr] Compiling ownership v0.1.0 (/source) Nov 16 10:17:25.431 INFO [stderr] warning: unused variable: `string` Nov 16 10:17:25.431 INFO [stderr] --> src/main.rs:13:13 Nov 16 10:17:25.431 INFO [stderr] | Nov 16 10:17:25.431 INFO [stderr] 13 | let string = "hello"; // string is valid from here forward Nov 16 10:17:25.431 INFO [stderr] | ^^^^^^ help: consider using `_string` instead Nov 16 10:17:25.431 INFO [stderr] | Nov 16 10:17:25.431 INFO [stderr] = note: #[warn(unused_variables)] on by default Nov 16 10:17:25.431 INFO [stderr] Nov 16 10:17:25.431 INFO [stderr] warning: unused variable: `s2` Nov 16 10:17:25.431 INFO [stderr] --> src/main.rs:40:9 Nov 16 10:17:25.431 INFO [stderr] | Nov 16 10:17:25.431 INFO [stderr] 40 | let s2 = s1; Nov 16 10:17:25.431 INFO [stderr] | ^^ help: consider using `_s2` instead Nov 16 10:17:25.431 INFO [stderr] Nov 16 10:17:25.431 INFO [stderr] warning: unused variable: `s1` Nov 16 10:17:25.431 INFO [stderr] --> src/main.rs:68:9 Nov 16 10:17:25.431 INFO [stderr] | Nov 16 10:17:25.431 INFO [stderr] 68 | let s1 = gives_ownership(); // gives_ownership moves its return Nov 16 10:17:25.431 INFO [stderr] | ^^ help: consider using `_s1` instead Nov 16 10:17:25.431 INFO [stderr] Nov 16 10:17:25.431 INFO [stderr] warning: unused variable: `r1` Nov 16 10:17:25.431 INFO [stderr] --> src/main.rs:98:9 Nov 16 10:17:25.431 INFO [stderr] | Nov 16 10:17:25.431 INFO [stderr] 98 | let r1 = &mut s2; Nov 16 10:17:25.431 INFO [stderr] | ^^ help: consider using `_r1` instead Nov 16 10:17:25.431 INFO [stderr] Nov 16 10:17:25.431 INFO [stderr] warning: unused variable: `r3` Nov 16 10:17:25.431 INFO [stderr] --> src/main.rs:107:13 Nov 16 10:17:25.431 INFO [stderr] | Nov 16 10:17:25.431 INFO [stderr] 107 | let r3 = &mut s3; Nov 16 10:17:25.431 INFO [stderr] | ^^ help: consider using `_r3` instead Nov 16 10:17:25.431 INFO [stderr] Nov 16 10:17:25.431 INFO [stderr] warning: unused variable: `r4` Nov 16 10:17:25.431 INFO [stderr] --> src/main.rs:110:9 Nov 16 10:17:25.431 INFO [stderr] | Nov 16 10:17:25.431 INFO [stderr] 110 | let r4 = &mut s3; Nov 16 10:17:25.431 INFO [stderr] | ^^ help: consider using `_r4` instead Nov 16 10:17:25.431 INFO [stderr] Nov 16 10:17:25.431 INFO [stderr] warning: unused variable: `r1` Nov 16 10:17:25.431 INFO [stderr] --> src/main.rs:113:9 Nov 16 10:17:25.431 INFO [stderr] | Nov 16 10:17:25.432 INFO [stderr] 113 | let r1 = &s; // immutable ref Nov 16 10:17:25.432 INFO [stderr] | ^^ help: consider using `_r1` instead Nov 16 10:17:25.432 INFO [stderr] Nov 16 10:17:25.432 INFO [stderr] warning: unused variable: `r2` Nov 16 10:17:25.432 INFO [stderr] --> src/main.rs:114:9 Nov 16 10:17:25.432 INFO [stderr] | Nov 16 10:17:25.432 INFO [stderr] 114 | let r2 = &s; // second because as many refs can read the same data safely Nov 16 10:17:25.432 INFO [stderr] | ^^ help: consider using `_r2` instead Nov 16 10:17:25.432 INFO [stderr] Nov 16 10:17:25.432 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:25.432 INFO [stderr] --> src/main.rs:140:9 Nov 16 10:17:25.432 INFO [stderr] | Nov 16 10:17:25.432 INFO [stderr] 140 | let slice = &s[0..2]; // same Nov 16 10:17:25.432 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:25.432 INFO [stderr] Nov 16 10:17:25.432 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:25.432 INFO [stderr] --> src/main.rs:141:9 Nov 16 10:17:25.432 INFO [stderr] | Nov 16 10:17:25.432 INFO [stderr] 141 | let slice = &s[..2]; // same Nov 16 10:17:25.432 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:25.432 INFO [stderr] Nov 16 10:17:25.432 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:25.432 INFO [stderr] --> src/main.rs:145:9 Nov 16 10:17:25.432 INFO [stderr] | Nov 16 10:17:25.432 INFO [stderr] 145 | let slice = &s[2..len]; // same Nov 16 10:17:25.432 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:25.432 INFO [stderr] Nov 16 10:17:25.432 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:25.432 INFO [stderr] --> src/main.rs:146:9 Nov 16 10:17:25.432 INFO [stderr] | Nov 16 10:17:25.432 INFO [stderr] 146 | let slice = &s[2..]; // same Nov 16 10:17:25.432 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:25.432 INFO [stderr] Nov 16 10:17:25.432 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:25.432 INFO [stderr] --> src/main.rs:148:9 Nov 16 10:17:25.432 INFO [stderr] | Nov 16 10:17:25.432 INFO [stderr] 148 | let slice = &s[0..len]; // same Nov 16 10:17:25.432 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:25.432 INFO [stderr] Nov 16 10:17:25.432 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:25.432 INFO [stderr] --> src/main.rs:149:9 Nov 16 10:17:25.432 INFO [stderr] | Nov 16 10:17:25.432 INFO [stderr] 149 | let slice = &s[..]; // same Nov 16 10:17:25.432 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:25.432 INFO [stderr] Nov 16 10:17:25.432 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:25.432 INFO [stderr] --> src/main.rs:166:9 Nov 16 10:17:25.432 INFO [stderr] | Nov 16 10:17:25.432 INFO [stderr] 166 | let slice = &a[0..2]; Nov 16 10:17:25.432 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:25.432 INFO [stderr] Nov 16 10:17:25.443 INFO [stderr] warning: variable does not need to be mutable Nov 16 10:17:25.443 INFO [stderr] --> src/main.rs:112:9 Nov 16 10:17:25.443 INFO [stderr] | Nov 16 10:17:25.443 INFO [stderr] 112 | let mut s = String::from("hello s"); Nov 16 10:17:25.443 INFO [stderr] | ----^ Nov 16 10:17:25.443 INFO [stderr] | | Nov 16 10:17:25.443 INFO [stderr] | help: remove this `mut` Nov 16 10:17:25.443 INFO [stderr] | Nov 16 10:17:25.443 INFO [stderr] = note: #[warn(unused_mut)] on by default Nov 16 10:17:25.443 INFO [stderr] Nov 16 10:17:26.021 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.82s Nov 16 10:17:26.026 INFO [stderr] su: No module specific data is present Nov 16 10:17:26.759 INFO running `"docker" "inspect" "f8253463032a9d7fba4ff6dd6b881fa83ec7c848a286195cb305614d517fbb7c"` Nov 16 10:17:27.023 INFO running `"docker" "rm" "-f" "f8253463032a9d7fba4ff6dd6b881fa83ec7c848a286195cb305614d517fbb7c"` Nov 16 10:17:27.303 INFO [stdout] f8253463032a9d7fba4ff6dd6b881fa83ec7c848a286195cb305614d517fbb7c Nov 16 10:17:27.315 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-7/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"` Nov 16 10:17:27.871 INFO [stdout] dd927cfa6d50d4aec998947835df0cbec24d2a8ea81c03c9f8e6db062ed8a9e6 Nov 16 10:17:27.873 INFO running `"docker" "start" "-a" "dd927cfa6d50d4aec998947835df0cbec24d2a8ea81c03c9f8e6db062ed8a9e6"` Nov 16 10:17:28.302 INFO [stderr] usermod: no changes Nov 16 10:17:28.331 INFO [stderr] Compiling ownership v0.1.0 (/source) Nov 16 10:17:28.474 INFO [stderr] warning: unused variable: `string` Nov 16 10:17:28.474 INFO [stderr] --> src/main.rs:13:13 Nov 16 10:17:28.474 INFO [stderr] | Nov 16 10:17:28.474 INFO [stderr] 13 | let string = "hello"; // string is valid from here forward Nov 16 10:17:28.474 INFO [stderr] | ^^^^^^ help: consider using `_string` instead Nov 16 10:17:28.474 INFO [stderr] | Nov 16 10:17:28.474 INFO [stderr] = note: #[warn(unused_variables)] on by default Nov 16 10:17:28.474 INFO [stderr] Nov 16 10:17:28.474 INFO [stderr] warning: unused variable: `s2` Nov 16 10:17:28.474 INFO [stderr] --> src/main.rs:40:9 Nov 16 10:17:28.474 INFO [stderr] | Nov 16 10:17:28.474 INFO [stderr] 40 | let s2 = s1; Nov 16 10:17:28.474 INFO [stderr] | ^^ help: consider using `_s2` instead Nov 16 10:17:28.474 INFO [stderr] Nov 16 10:17:28.474 INFO [stderr] warning: unused variable: `s1` Nov 16 10:17:28.474 INFO [stderr] --> src/main.rs:68:9 Nov 16 10:17:28.474 INFO [stderr] | Nov 16 10:17:28.474 INFO [stderr] 68 | let s1 = gives_ownership(); // gives_ownership moves its return Nov 16 10:17:28.474 INFO [stderr] | ^^ help: consider using `_s1` instead Nov 16 10:17:28.474 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `r1` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:98:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 98 | let r1 = &mut s2; Nov 16 10:17:28.475 INFO [stderr] | ^^ help: consider using `_r1` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `r3` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:107:13 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 107 | let r3 = &mut s3; Nov 16 10:17:28.475 INFO [stderr] | ^^ help: consider using `_r3` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `r4` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:110:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 110 | let r4 = &mut s3; Nov 16 10:17:28.475 INFO [stderr] | ^^ help: consider using `_r4` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `r1` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:113:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 113 | let r1 = &s; // immutable ref Nov 16 10:17:28.475 INFO [stderr] | ^^ help: consider using `_r1` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `r2` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:114:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 114 | let r2 = &s; // second because as many refs can read the same data safely Nov 16 10:17:28.475 INFO [stderr] | ^^ help: consider using `_r2` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:140:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 140 | let slice = &s[0..2]; // same Nov 16 10:17:28.475 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:141:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 141 | let slice = &s[..2]; // same Nov 16 10:17:28.475 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:145:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 145 | let slice = &s[2..len]; // same Nov 16 10:17:28.475 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:146:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 146 | let slice = &s[2..]; // same Nov 16 10:17:28.475 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:148:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 148 | let slice = &s[0..len]; // same Nov 16 10:17:28.475 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:149:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 149 | let slice = &s[..]; // same Nov 16 10:17:28.475 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.475 INFO [stderr] warning: unused variable: `slice` Nov 16 10:17:28.475 INFO [stderr] --> src/main.rs:166:9 Nov 16 10:17:28.475 INFO [stderr] | Nov 16 10:17:28.475 INFO [stderr] 166 | let slice = &a[0..2]; Nov 16 10:17:28.475 INFO [stderr] | ^^^^^ help: consider using `_slice` instead Nov 16 10:17:28.475 INFO [stderr] Nov 16 10:17:28.489 INFO [stderr] warning: variable does not need to be mutable Nov 16 10:17:28.489 INFO [stderr] --> src/main.rs:112:9 Nov 16 10:17:28.489 INFO [stderr] | Nov 16 10:17:28.489 INFO [stderr] 112 | let mut s = String::from("hello s"); Nov 16 10:17:28.489 INFO [stderr] | ----^ Nov 16 10:17:28.489 INFO [stderr] | | Nov 16 10:17:28.489 INFO [stderr] | help: remove this `mut` Nov 16 10:17:28.489 INFO [stderr] | Nov 16 10:17:28.489 INFO [stderr] = note: #[warn(unused_mut)] on by default Nov 16 10:17:28.489 INFO [stderr] Nov 16 10:17:28.745 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.42s Nov 16 10:17:28.747 INFO [stderr] su: No module specific data is present Nov 16 10:17:29.123 INFO running `"docker" "inspect" "dd927cfa6d50d4aec998947835df0cbec24d2a8ea81c03c9f8e6db062ed8a9e6"` Nov 16 10:17:29.217 INFO running `"docker" "rm" "-f" "dd927cfa6d50d4aec998947835df0cbec24d2a8ea81c03c9f8e6db062ed8a9e6"` Nov 16 10:17:29.361 INFO [stdout] dd927cfa6d50d4aec998947835df0cbec24d2a8ea81c03c9f8e6db062ed8a9e6 Nov 16 10:17:29.365 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-7/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55982/try#2e026d6e5d7621634147ad4c8074f1d964dbb1be:/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 +2e026d6e5d7621634147ad4c8074f1d964dbb1be-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"` Nov 16 10:17:29.688 INFO [stdout] ff0956aa84c02a50fbfa37b5f4bb3fec8e57a3706b67053f6386414f813fdb7d Nov 16 10:17:29.694 INFO running `"docker" "start" "-a" "ff0956aa84c02a50fbfa37b5f4bb3fec8e57a3706b67053f6386414f813fdb7d"` Nov 16 10:17:30.216 INFO [stderr] usermod: no changes Nov 16 10:17:30.254 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.01s Nov 16 10:17:30.254 INFO [stderr] Running /target/debug/deps/ownership-b6d5da1b66b1be4e Nov 16 10:17:30.254 INFO [stdout] Nov 16 10:17:30.254 INFO [stdout] running 0 tests Nov 16 10:17:30.254 INFO [stdout] Nov 16 10:17:30.254 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out Nov 16 10:17:30.254 INFO [stdout] Nov 16 10:17:30.259 INFO [stderr] su: No module specific data is present Nov 16 10:17:30.494 INFO running `"docker" "inspect" "ff0956aa84c02a50fbfa37b5f4bb3fec8e57a3706b67053f6386414f813fdb7d"` Nov 16 10:17:30.565 INFO running `"docker" "rm" "-f" "ff0956aa84c02a50fbfa37b5f4bb3fec8e57a3706b67053f6386414f813fdb7d"` Nov 16 10:17:30.678 INFO [stdout] ff0956aa84c02a50fbfa37b5f4bb3fec8e57a3706b67053f6386414f813fdb7d