Dec 05 22:00:55.419 INFO testing hardvain/rust-practice against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 05 22:00:55.419 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 22:00:55.664 INFO [stdout] 860bdfc38d94ba775ceacdfb245b38e1ecea81a770df55d9889563b5be9ee799
Dec 05 22:00:55.670 INFO running `"docker" "start" "-a" "860bdfc38d94ba775ceacdfb245b38e1ecea81a770df55d9889563b5be9ee799"`
Dec 05 22:00:56.649 INFO [stderr] usermod: no changes
Dec 05 22:00:56.696 INFO [stderr]    Compiling practice v0.1.0 (/source)
Dec 05 22:00:57.068 INFO [stderr] warning: unused variable: `sample`
Dec 05 22:00:57.068 INFO [stderr]  --> src/main.rs:9:24
Dec 05 22:00:57.068 INFO [stderr]   |
Dec 05 22:00:57.068 INFO [stderr] 9 | fn taking_owned_sample(sample: Sample) {}
Dec 05 22:00:57.068 INFO [stderr]   |                        ^^^^^^ help: consider using `_sample` instead
Dec 05 22:00:57.068 INFO [stderr]   |
Dec 05 22:00:57.068 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 05 22:00:57.068 INFO [stderr] 
Dec 05 22:00:57.068 INFO [stderr] warning: unused variable: `sample`
Dec 05 22:00:57.068 INFO [stderr]   --> src/main.rs:10:25
Dec 05 22:00:57.068 INFO [stderr]    |
Dec 05 22:00:57.068 INFO [stderr] 10 | fn taking_shared_sample(sample: &Sample) {}
Dec 05 22:00:57.068 INFO [stderr]    |                         ^^^^^^ help: consider using `_sample` instead
Dec 05 22:00:57.068 INFO [stderr] 
Dec 05 22:00:57.068 INFO [stderr] warning: unused variable: `sample`
Dec 05 22:00:57.068 INFO [stderr]   --> src/main.rs:11:26
Dec 05 22:00:57.068 INFO [stderr]    |
Dec 05 22:00:57.068 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Dec 05 22:00:57.068 INFO [stderr]    |                          ^^^^^^ help: consider using `_sample` instead
Dec 05 22:00:57.068 INFO [stderr] 
Dec 05 22:00:57.068 INFO [stderr] warning: unused variable: `sample`
Dec 05 22:00:57.068 INFO [stderr]   --> src/main.rs:37:9
Dec 05 22:00:57.068 INFO [stderr]    |
Dec 05 22:00:57.068 INFO [stderr] 37 |     let sample = Sample { key: 1 };
Dec 05 22:00:57.068 INFO [stderr]    |         ^^^^^^ help: consider using `_sample` instead
Dec 05 22:00:57.068 INFO [stderr] 
Dec 05 22:00:57.068 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:00:57.068 INFO [stderr]   --> src/main.rs:44:9
Dec 05 22:00:57.068 INFO [stderr]    |
Dec 05 22:00:57.068 INFO [stderr] 44 |     let mut sample = Sample { key: 1 };
Dec 05 22:00:57.068 INFO [stderr]    |         ----^^^^^^
Dec 05 22:00:57.068 INFO [stderr]    |         |
Dec 05 22:00:57.068 INFO [stderr]    |         help: remove this `mut`
Dec 05 22:00:57.068 INFO [stderr]    |
Dec 05 22:00:57.068 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 22:00:57.068 INFO [stderr] 
Dec 05 22:00:57.068 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:00:57.068 INFO [stderr]   --> src/main.rs:60:9
Dec 05 22:00:57.068 INFO [stderr]    |
Dec 05 22:00:57.069 INFO [stderr] 60 |     let mut sample = Sample { key: 1 };
Dec 05 22:00:57.069 INFO [stderr]    |         ----^^^^^^
Dec 05 22:00:57.069 INFO [stderr]    |         |
Dec 05 22:00:57.069 INFO [stderr]    |         help: remove this `mut`
Dec 05 22:00:57.069 INFO [stderr] 
Dec 05 22:00:57.069 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:00:57.069 INFO [stderr]    --> src/main.rs:113:9
Dec 05 22:00:57.069 INFO [stderr]     |
Dec 05 22:00:57.069 INFO [stderr] 113 |     let mut sample = Sample { key: 1 };
Dec 05 22:00:57.069 INFO [stderr]     |         ----^^^^^^
Dec 05 22:00:57.069 INFO [stderr]     |         |
Dec 05 22:00:57.069 INFO [stderr]     |         help: remove this `mut`
Dec 05 22:00:57.069 INFO [stderr] 
Dec 05 22:00:57.069 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:00:57.069 INFO [stderr]    --> src/main.rs:121:9
Dec 05 22:00:57.069 INFO [stderr]     |
Dec 05 22:00:57.069 INFO [stderr] 121 |     let mut sample = Sample { key: 1 };
Dec 05 22:00:57.069 INFO [stderr]     |         ----^^^^^^
Dec 05 22:00:57.069 INFO [stderr]     |         |
Dec 05 22:00:57.069 INFO [stderr]     |         help: remove this `mut`
Dec 05 22:00:57.069 INFO [stderr] 
Dec 05 22:00:57.069 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:00:57.069 INFO [stderr]    --> src/main.rs:130:9
Dec 05 22:00:57.069 INFO [stderr]     |
Dec 05 22:00:57.069 INFO [stderr] 130 |     let mut sample = Sample { key: 1 };
Dec 05 22:00:57.069 INFO [stderr]     |         ----^^^^^^
Dec 05 22:00:57.069 INFO [stderr]     |         |
Dec 05 22:00:57.069 INFO [stderr]     |         help: remove this `mut`
Dec 05 22:00:57.069 INFO [stderr] 
Dec 05 22:00:57.069 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:00:57.069 INFO [stderr]    --> src/main.rs:137:9
Dec 05 22:00:57.069 INFO [stderr]     |
Dec 05 22:00:57.069 INFO [stderr] 137 |     let mut sample = Sample { key: 1 };
Dec 05 22:00:57.069 INFO [stderr]     |         ----^^^^^^
Dec 05 22:00:57.069 INFO [stderr]     |         |
Dec 05 22:00:57.069 INFO [stderr]     |         help: remove this `mut`
Dec 05 22:00:57.069 INFO [stderr] 
Dec 05 22:00:57.069 INFO [stderr] warning: field is never used: `key`
Dec 05 22:00:57.069 INFO [stderr]  --> src/main.rs:2:3
Dec 05 22:00:57.069 INFO [stderr]   |
Dec 05 22:00:57.069 INFO [stderr] 2 |   key: i32,
Dec 05 22:00:57.069 INFO [stderr]   |   ^^^^^^^^
Dec 05 22:00:57.069 INFO [stderr]   |
Dec 05 22:00:57.069 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 22:00:57.069 INFO [stderr] 
Dec 05 22:00:57.069 INFO [stderr] warning: function is never used: `taking_mutable_sample`
Dec 05 22:00:57.069 INFO [stderr]   --> src/main.rs:11:1
Dec 05 22:00:57.069 INFO [stderr]    |
Dec 05 22:00:57.069 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Dec 05 22:00:57.069 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 22:00:57.069 INFO [stderr] 
Dec 05 22:00:57.069 INFO [stderr] warning: function is never used: `mutable_binding_function_calls`
Dec 05 22:00:57.069 INFO [stderr]   --> src/main.rs:42:1
Dec 05 22:00:57.069 INFO [stderr]    |
Dec 05 22:00:57.069 INFO [stderr] 42 | fn mutable_binding_function_calls() {
Dec 05 22:00:57.069 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 22:00:57.069 INFO [stderr] 
Dec 05 22:00:57.281 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
Dec 05 22:00:57.284 INFO [stderr] su: No module specific data is present
Dec 05 22:00:57.957 INFO running `"docker" "inspect" "860bdfc38d94ba775ceacdfb245b38e1ecea81a770df55d9889563b5be9ee799"`
Dec 05 22:00:58.148 INFO running `"docker" "rm" "-f" "860bdfc38d94ba775ceacdfb245b38e1ecea81a770df55d9889563b5be9ee799"`
Dec 05 22:00:58.357 INFO [stdout] 860bdfc38d94ba775ceacdfb245b38e1ecea81a770df55d9889563b5be9ee799
Dec 05 22:00:58.362 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 22:00:58.713 INFO [stdout] a8f1d14014f5775be3fe339c8d7d2d44197477eb12fa2ce29902f83201720fa9
Dec 05 22:00:58.718 INFO running `"docker" "start" "-a" "a8f1d14014f5775be3fe339c8d7d2d44197477eb12fa2ce29902f83201720fa9"`
Dec 05 22:00:59.716 INFO [stderr] usermod: no changes
Dec 05 22:00:59.756 INFO [stderr]    Compiling practice v0.1.0 (/source)
Dec 05 22:01:00.176 INFO [stderr] warning: unused variable: `sample`
Dec 05 22:01:00.176 INFO [stderr]  --> src/main.rs:9:24
Dec 05 22:01:00.176 INFO [stderr]   |
Dec 05 22:01:00.177 INFO [stderr] 9 | fn taking_owned_sample(sample: Sample) {}
Dec 05 22:01:00.177 INFO [stderr]   |                        ^^^^^^ help: consider using `_sample` instead
Dec 05 22:01:00.177 INFO [stderr]   |
Dec 05 22:01:00.177 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: unused variable: `sample`
Dec 05 22:01:00.177 INFO [stderr]   --> src/main.rs:10:25
Dec 05 22:01:00.177 INFO [stderr]    |
Dec 05 22:01:00.177 INFO [stderr] 10 | fn taking_shared_sample(sample: &Sample) {}
Dec 05 22:01:00.177 INFO [stderr]    |                         ^^^^^^ help: consider using `_sample` instead
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: unused variable: `sample`
Dec 05 22:01:00.177 INFO [stderr]   --> src/main.rs:11:26
Dec 05 22:01:00.177 INFO [stderr]    |
Dec 05 22:01:00.177 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Dec 05 22:01:00.177 INFO [stderr]    |                          ^^^^^^ help: consider using `_sample` instead
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: unused variable: `sample`
Dec 05 22:01:00.177 INFO [stderr]   --> src/main.rs:37:9
Dec 05 22:01:00.177 INFO [stderr]    |
Dec 05 22:01:00.177 INFO [stderr] 37 |     let sample = Sample { key: 1 };
Dec 05 22:01:00.177 INFO [stderr]    |         ^^^^^^ help: consider using `_sample` instead
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:01:00.177 INFO [stderr]   --> src/main.rs:44:9
Dec 05 22:01:00.177 INFO [stderr]    |
Dec 05 22:01:00.177 INFO [stderr] 44 |     let mut sample = Sample { key: 1 };
Dec 05 22:01:00.177 INFO [stderr]    |         ----^^^^^^
Dec 05 22:01:00.177 INFO [stderr]    |         |
Dec 05 22:01:00.177 INFO [stderr]    |         help: remove this `mut`
Dec 05 22:01:00.177 INFO [stderr]    |
Dec 05 22:01:00.177 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:01:00.177 INFO [stderr]   --> src/main.rs:60:9
Dec 05 22:01:00.177 INFO [stderr]    |
Dec 05 22:01:00.177 INFO [stderr] 60 |     let mut sample = Sample { key: 1 };
Dec 05 22:01:00.177 INFO [stderr]    |         ----^^^^^^
Dec 05 22:01:00.177 INFO [stderr]    |         |
Dec 05 22:01:00.177 INFO [stderr]    |         help: remove this `mut`
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:01:00.177 INFO [stderr]    --> src/main.rs:113:9
Dec 05 22:01:00.177 INFO [stderr]     |
Dec 05 22:01:00.177 INFO [stderr] 113 |     let mut sample = Sample { key: 1 };
Dec 05 22:01:00.177 INFO [stderr]     |         ----^^^^^^
Dec 05 22:01:00.177 INFO [stderr]     |         |
Dec 05 22:01:00.177 INFO [stderr]     |         help: remove this `mut`
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:01:00.177 INFO [stderr]    --> src/main.rs:121:9
Dec 05 22:01:00.177 INFO [stderr]     |
Dec 05 22:01:00.177 INFO [stderr] 121 |     let mut sample = Sample { key: 1 };
Dec 05 22:01:00.177 INFO [stderr]     |         ----^^^^^^
Dec 05 22:01:00.177 INFO [stderr]     |         |
Dec 05 22:01:00.177 INFO [stderr]     |         help: remove this `mut`
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:01:00.177 INFO [stderr]    --> src/main.rs:130:9
Dec 05 22:01:00.177 INFO [stderr]     |
Dec 05 22:01:00.177 INFO [stderr] 130 |     let mut sample = Sample { key: 1 };
Dec 05 22:01:00.177 INFO [stderr]     |         ----^^^^^^
Dec 05 22:01:00.177 INFO [stderr]     |         |
Dec 05 22:01:00.177 INFO [stderr]     |         help: remove this `mut`
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: variable does not need to be mutable
Dec 05 22:01:00.177 INFO [stderr]    --> src/main.rs:137:9
Dec 05 22:01:00.177 INFO [stderr]     |
Dec 05 22:01:00.177 INFO [stderr] 137 |     let mut sample = Sample { key: 1 };
Dec 05 22:01:00.177 INFO [stderr]     |         ----^^^^^^
Dec 05 22:01:00.177 INFO [stderr]     |         |
Dec 05 22:01:00.177 INFO [stderr]     |         help: remove this `mut`
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: field is never used: `key`
Dec 05 22:01:00.177 INFO [stderr]  --> src/main.rs:2:3
Dec 05 22:01:00.177 INFO [stderr]   |
Dec 05 22:01:00.177 INFO [stderr] 2 |   key: i32,
Dec 05 22:01:00.177 INFO [stderr]   |   ^^^^^^^^
Dec 05 22:01:00.177 INFO [stderr]   |
Dec 05 22:01:00.177 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: function is never used: `taking_mutable_sample`
Dec 05 22:01:00.177 INFO [stderr]   --> src/main.rs:11:1
Dec 05 22:01:00.177 INFO [stderr]    |
Dec 05 22:01:00.177 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Dec 05 22:01:00.177 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 22:01:00.177 INFO [stderr] 
Dec 05 22:01:00.177 INFO [stderr] warning: function is never used: `mutable_binding_function_calls`
Dec 05 22:01:00.178 INFO [stderr]   --> src/main.rs:42:1
Dec 05 22:01:00.178 INFO [stderr]    |
Dec 05 22:01:00.178 INFO [stderr] 42 | fn mutable_binding_function_calls() {
Dec 05 22:01:00.178 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 22:01:00.178 INFO [stderr] 
Dec 05 22:01:00.480 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
Dec 05 22:01:00.492 INFO [stderr] su: No module specific data is present
Dec 05 22:01:01.251 INFO running `"docker" "inspect" "a8f1d14014f5775be3fe339c8d7d2d44197477eb12fa2ce29902f83201720fa9"`
Dec 05 22:01:01.428 INFO running `"docker" "rm" "-f" "a8f1d14014f5775be3fe339c8d7d2d44197477eb12fa2ce29902f83201720fa9"`
Dec 05 22:01:01.727 INFO [stdout] a8f1d14014f5775be3fe339c8d7d2d44197477eb12fa2ce29902f83201720fa9
Dec 05 22:01:01.734 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-7/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/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 22:01:02.175 INFO [stdout] 1a8798786278b48b4406f1a6bb0bde91feb5a2800620ce74d5617b8e4affe887
Dec 05 22:01:02.177 INFO running `"docker" "start" "-a" "1a8798786278b48b4406f1a6bb0bde91feb5a2800620ce74d5617b8e4affe887"`
Dec 05 22:01:03.403 INFO [stderr] usermod: no changes
Dec 05 22:01:03.435 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 05 22:01:03.435 INFO [stderr]      Running /target/debug/deps/practice-fc6f7407a6012a0d
Dec 05 22:01:03.456 INFO [stdout] 
Dec 05 22:01:03.456 INFO [stdout] running 0 tests
Dec 05 22:01:03.456 INFO [stdout] 
Dec 05 22:01:03.456 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 05 22:01:03.456 INFO [stdout] 
Dec 05 22:01:03.460 INFO [stderr] su: No module specific data is present
Dec 05 22:01:04.029 INFO running `"docker" "inspect" "1a8798786278b48b4406f1a6bb0bde91feb5a2800620ce74d5617b8e4affe887"`
Dec 05 22:01:04.174 INFO running `"docker" "rm" "-f" "1a8798786278b48b4406f1a6bb0bde91feb5a2800620ce74d5617b8e4affe887"`
Dec 05 22:01:04.276 INFO [stdout] 1a8798786278b48b4406f1a6bb0bde91feb5a2800620ce74d5617b8e4affe887