Nov 17 01:34:14.537 INFO testing hardvain/rust-practice against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 17 01:34:14.538 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-7/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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 17 01:34:15.064 INFO [stdout] 1a912caf4c9c60d707500da2e06e86c1ba750b7965eafff7c030e1b21b5954e4
Nov 17 01:34:15.068 INFO running `"docker" "start" "-a" "1a912caf4c9c60d707500da2e06e86c1ba750b7965eafff7c030e1b21b5954e4"`
Nov 17 01:34:16.748 INFO [stderr] usermod: no changes
Nov 17 01:34:16.843 INFO [stderr]    Compiling practice v0.1.0 (/source)
Nov 17 01:34:17.283 INFO [stderr] warning: unused variable: `sample`
Nov 17 01:34:17.283 INFO [stderr]  --> src/main.rs:9:24
Nov 17 01:34:17.283 INFO [stderr]   |
Nov 17 01:34:17.283 INFO [stderr] 9 | fn taking_owned_sample(sample: Sample) {}
Nov 17 01:34:17.283 INFO [stderr]   |                        ^^^^^^ help: consider using `_sample` instead
Nov 17 01:34:17.283 INFO [stderr]   |
Nov 17 01:34:17.283 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 17 01:34:17.283 INFO [stderr] 
Nov 17 01:34:17.283 INFO [stderr] warning: unused variable: `sample`
Nov 17 01:34:17.283 INFO [stderr]   --> src/main.rs:10:25
Nov 17 01:34:17.283 INFO [stderr]    |
Nov 17 01:34:17.283 INFO [stderr] 10 | fn taking_shared_sample(sample: &Sample) {}
Nov 17 01:34:17.283 INFO [stderr]    |                         ^^^^^^ help: consider using `_sample` instead
Nov 17 01:34:17.283 INFO [stderr] 
Nov 17 01:34:17.283 INFO [stderr] warning: unused variable: `sample`
Nov 17 01:34:17.283 INFO [stderr]   --> src/main.rs:11:26
Nov 17 01:34:17.283 INFO [stderr]    |
Nov 17 01:34:17.283 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Nov 17 01:34:17.283 INFO [stderr]    |                          ^^^^^^ help: consider using `_sample` instead
Nov 17 01:34:17.283 INFO [stderr] 
Nov 17 01:34:17.283 INFO [stderr] warning: unused variable: `sample`
Nov 17 01:34:17.283 INFO [stderr]   --> src/main.rs:37:9
Nov 17 01:34:17.283 INFO [stderr]    |
Nov 17 01:34:17.283 INFO [stderr] 37 |     let sample = Sample { key: 1 };
Nov 17 01:34:17.283 INFO [stderr]    |         ^^^^^^ help: consider using `_sample` instead
Nov 17 01:34:17.283 INFO [stderr] 
Nov 17 01:34:17.287 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:17.287 INFO [stderr]   --> src/main.rs:44:9
Nov 17 01:34:17.287 INFO [stderr]    |
Nov 17 01:34:17.287 INFO [stderr] 44 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:17.287 INFO [stderr]    |         ----^^^^^^
Nov 17 01:34:17.287 INFO [stderr]    |         |
Nov 17 01:34:17.287 INFO [stderr]    |         help: remove this `mut`
Nov 17 01:34:17.287 INFO [stderr]    |
Nov 17 01:34:17.287 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 01:34:17.287 INFO [stderr] 
Nov 17 01:34:17.287 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:17.287 INFO [stderr]   --> src/main.rs:60:9
Nov 17 01:34:17.287 INFO [stderr]    |
Nov 17 01:34:17.287 INFO [stderr] 60 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:17.287 INFO [stderr]    |         ----^^^^^^
Nov 17 01:34:17.287 INFO [stderr]    |         |
Nov 17 01:34:17.287 INFO [stderr]    |         help: remove this `mut`
Nov 17 01:34:17.287 INFO [stderr] 
Nov 17 01:34:17.287 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:17.287 INFO [stderr]    --> src/main.rs:113:9
Nov 17 01:34:17.287 INFO [stderr]     |
Nov 17 01:34:17.287 INFO [stderr] 113 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:17.287 INFO [stderr]     |         ----^^^^^^
Nov 17 01:34:17.287 INFO [stderr]     |         |
Nov 17 01:34:17.287 INFO [stderr]     |         help: remove this `mut`
Nov 17 01:34:17.287 INFO [stderr] 
Nov 17 01:34:17.287 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:17.287 INFO [stderr]    --> src/main.rs:121:9
Nov 17 01:34:17.287 INFO [stderr]     |
Nov 17 01:34:17.287 INFO [stderr] 121 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:17.287 INFO [stderr]     |         ----^^^^^^
Nov 17 01:34:17.287 INFO [stderr]     |         |
Nov 17 01:34:17.287 INFO [stderr]     |         help: remove this `mut`
Nov 17 01:34:17.287 INFO [stderr] 
Nov 17 01:34:17.287 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:17.287 INFO [stderr]    --> src/main.rs:130:9
Nov 17 01:34:17.287 INFO [stderr]     |
Nov 17 01:34:17.287 INFO [stderr] 130 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:17.287 INFO [stderr]     |         ----^^^^^^
Nov 17 01:34:17.287 INFO [stderr]     |         |
Nov 17 01:34:17.287 INFO [stderr]     |         help: remove this `mut`
Nov 17 01:34:17.287 INFO [stderr] 
Nov 17 01:34:17.287 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:17.287 INFO [stderr]    --> src/main.rs:137:9
Nov 17 01:34:17.287 INFO [stderr]     |
Nov 17 01:34:17.287 INFO [stderr] 137 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:17.287 INFO [stderr]     |         ----^^^^^^
Nov 17 01:34:17.287 INFO [stderr]     |         |
Nov 17 01:34:17.287 INFO [stderr]     |         help: remove this `mut`
Nov 17 01:34:17.287 INFO [stderr] 
Nov 17 01:34:17.287 INFO [stderr] warning: field is never used: `key`
Nov 17 01:34:17.287 INFO [stderr]  --> src/main.rs:2:3
Nov 17 01:34:17.287 INFO [stderr]   |
Nov 17 01:34:17.287 INFO [stderr] 2 |   key: i32,
Nov 17 01:34:17.287 INFO [stderr]   |   ^^^^^^^^
Nov 17 01:34:17.287 INFO [stderr]   |
Nov 17 01:34:17.287 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 17 01:34:17.287 INFO [stderr] 
Nov 17 01:34:17.287 INFO [stderr] warning: function is never used: `taking_mutable_sample`
Nov 17 01:34:17.287 INFO [stderr]   --> src/main.rs:11:1
Nov 17 01:34:17.287 INFO [stderr]    |
Nov 17 01:34:17.287 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Nov 17 01:34:17.288 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 01:34:17.288 INFO [stderr] 
Nov 17 01:34:17.288 INFO [stderr] warning: function is never used: `mutable_binding_function_calls`
Nov 17 01:34:17.288 INFO [stderr]   --> src/main.rs:42:1
Nov 17 01:34:17.288 INFO [stderr]    |
Nov 17 01:34:17.288 INFO [stderr] 42 | fn mutable_binding_function_calls() {
Nov 17 01:34:17.288 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 01:34:17.288 INFO [stderr] 
Nov 17 01:34:17.663 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
Nov 17 01:34:17.663 INFO [stderr] su: No module specific data is present
Nov 17 01:34:18.537 INFO running `"docker" "inspect" "1a912caf4c9c60d707500da2e06e86c1ba750b7965eafff7c030e1b21b5954e4"`
Nov 17 01:34:18.773 INFO running `"docker" "rm" "-f" "1a912caf4c9c60d707500da2e06e86c1ba750b7965eafff7c030e1b21b5954e4"`
Nov 17 01:34:19.208 INFO [stdout] 1a912caf4c9c60d707500da2e06e86c1ba750b7965eafff7c030e1b21b5954e4
Nov 17 01:34:19.217 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-7/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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 17 01:34:19.759 INFO [stdout] 28f6e0972be51ab93c0fc2ece2ba735badb269f0f1da4f17b641b7e9905e3807
Nov 17 01:34:19.767 INFO running `"docker" "start" "-a" "28f6e0972be51ab93c0fc2ece2ba735badb269f0f1da4f17b641b7e9905e3807"`
Nov 17 01:34:21.803 INFO [stderr] usermod: no changes
Nov 17 01:34:21.899 INFO [stderr]    Compiling practice v0.1.0 (/source)
Nov 17 01:34:22.339 INFO [stderr] warning: unused variable: `sample`
Nov 17 01:34:22.339 INFO [stderr]  --> src/main.rs:9:24
Nov 17 01:34:22.339 INFO [stderr]   |
Nov 17 01:34:22.339 INFO [stderr] 9 | fn taking_owned_sample(sample: Sample) {}
Nov 17 01:34:22.339 INFO [stderr]   |                        ^^^^^^ help: consider using `_sample` instead
Nov 17 01:34:22.339 INFO [stderr]   |
Nov 17 01:34:22.339 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Nov 17 01:34:22.339 INFO [stderr] 
Nov 17 01:34:22.339 INFO [stderr] warning: unused variable: `sample`
Nov 17 01:34:22.339 INFO [stderr]   --> src/main.rs:10:25
Nov 17 01:34:22.339 INFO [stderr]    |
Nov 17 01:34:22.339 INFO [stderr] 10 | fn taking_shared_sample(sample: &Sample) {}
Nov 17 01:34:22.339 INFO [stderr]    |                         ^^^^^^ help: consider using `_sample` instead
Nov 17 01:34:22.339 INFO [stderr] 
Nov 17 01:34:22.339 INFO [stderr] warning: unused variable: `sample`
Nov 17 01:34:22.339 INFO [stderr]   --> src/main.rs:11:26
Nov 17 01:34:22.339 INFO [stderr]    |
Nov 17 01:34:22.339 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Nov 17 01:34:22.339 INFO [stderr]    |                          ^^^^^^ help: consider using `_sample` instead
Nov 17 01:34:22.339 INFO [stderr] 
Nov 17 01:34:22.339 INFO [stderr] warning: unused variable: `sample`
Nov 17 01:34:22.339 INFO [stderr]   --> src/main.rs:37:9
Nov 17 01:34:22.339 INFO [stderr]    |
Nov 17 01:34:22.339 INFO [stderr] 37 |     let sample = Sample { key: 1 };
Nov 17 01:34:22.339 INFO [stderr]    |         ^^^^^^ help: consider using `_sample` instead
Nov 17 01:34:22.339 INFO [stderr] 
Nov 17 01:34:22.339 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:22.339 INFO [stderr]   --> src/main.rs:44:9
Nov 17 01:34:22.339 INFO [stderr]    |
Nov 17 01:34:22.339 INFO [stderr] 44 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:22.339 INFO [stderr]    |         ----^^^^^^
Nov 17 01:34:22.339 INFO [stderr]    |         |
Nov 17 01:34:22.339 INFO [stderr]    |         help: remove this `mut`
Nov 17 01:34:22.339 INFO [stderr]    |
Nov 17 01:34:22.339 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 17 01:34:22.339 INFO [stderr] 
Nov 17 01:34:22.339 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:22.339 INFO [stderr]   --> src/main.rs:60:9
Nov 17 01:34:22.339 INFO [stderr]    |
Nov 17 01:34:22.339 INFO [stderr] 60 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:22.339 INFO [stderr]    |         ----^^^^^^
Nov 17 01:34:22.339 INFO [stderr]    |         |
Nov 17 01:34:22.339 INFO [stderr]    |         help: remove this `mut`
Nov 17 01:34:22.340 INFO [stderr] 
Nov 17 01:34:22.340 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:22.340 INFO [stderr]    --> src/main.rs:113:9
Nov 17 01:34:22.340 INFO [stderr]     |
Nov 17 01:34:22.340 INFO [stderr] 113 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:22.340 INFO [stderr]     |         ----^^^^^^
Nov 17 01:34:22.340 INFO [stderr]     |         |
Nov 17 01:34:22.340 INFO [stderr]     |         help: remove this `mut`
Nov 17 01:34:22.340 INFO [stderr] 
Nov 17 01:34:22.340 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:22.340 INFO [stderr]    --> src/main.rs:121:9
Nov 17 01:34:22.340 INFO [stderr]     |
Nov 17 01:34:22.340 INFO [stderr] 121 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:22.340 INFO [stderr]     |         ----^^^^^^
Nov 17 01:34:22.340 INFO [stderr]     |         |
Nov 17 01:34:22.340 INFO [stderr]     |         help: remove this `mut`
Nov 17 01:34:22.340 INFO [stderr] 
Nov 17 01:34:22.340 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:22.340 INFO [stderr]    --> src/main.rs:130:9
Nov 17 01:34:22.340 INFO [stderr]     |
Nov 17 01:34:22.340 INFO [stderr] 130 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:22.340 INFO [stderr]     |         ----^^^^^^
Nov 17 01:34:22.340 INFO [stderr]     |         |
Nov 17 01:34:22.340 INFO [stderr]     |         help: remove this `mut`
Nov 17 01:34:22.340 INFO [stderr] 
Nov 17 01:34:22.340 INFO [stderr] warning: variable does not need to be mutable
Nov 17 01:34:22.340 INFO [stderr]    --> src/main.rs:137:9
Nov 17 01:34:22.340 INFO [stderr]     |
Nov 17 01:34:22.340 INFO [stderr] 137 |     let mut sample = Sample { key: 1 };
Nov 17 01:34:22.340 INFO [stderr]     |         ----^^^^^^
Nov 17 01:34:22.340 INFO [stderr]     |         |
Nov 17 01:34:22.340 INFO [stderr]     |         help: remove this `mut`
Nov 17 01:34:22.340 INFO [stderr] 
Nov 17 01:34:22.340 INFO [stderr] warning: field is never used: `key`
Nov 17 01:34:22.340 INFO [stderr]  --> src/main.rs:2:3
Nov 17 01:34:22.340 INFO [stderr]   |
Nov 17 01:34:22.340 INFO [stderr] 2 |   key: i32,
Nov 17 01:34:22.340 INFO [stderr]   |   ^^^^^^^^
Nov 17 01:34:22.340 INFO [stderr]   |
Nov 17 01:34:22.340 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 17 01:34:22.340 INFO [stderr] 
Nov 17 01:34:22.340 INFO [stderr] warning: function is never used: `taking_mutable_sample`
Nov 17 01:34:22.340 INFO [stderr]   --> src/main.rs:11:1
Nov 17 01:34:22.340 INFO [stderr]    |
Nov 17 01:34:22.340 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Nov 17 01:34:22.340 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 01:34:22.340 INFO [stderr] 
Nov 17 01:34:22.340 INFO [stderr] warning: function is never used: `mutable_binding_function_calls`
Nov 17 01:34:22.340 INFO [stderr]   --> src/main.rs:42:1
Nov 17 01:34:22.340 INFO [stderr]    |
Nov 17 01:34:22.340 INFO [stderr] 42 | fn mutable_binding_function_calls() {
Nov 17 01:34:22.340 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 17 01:34:22.340 INFO [stderr] 
Nov 17 01:34:22.695 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
Nov 17 01:34:22.698 INFO [stderr] su: No module specific data is present
Nov 17 01:34:23.459 INFO running `"docker" "inspect" "28f6e0972be51ab93c0fc2ece2ba735badb269f0f1da4f17b641b7e9905e3807"`
Nov 17 01:34:23.723 INFO running `"docker" "rm" "-f" "28f6e0972be51ab93c0fc2ece2ba735badb269f0f1da4f17b641b7e9905e3807"`
Nov 17 01:34:24.071 INFO [stdout] 28f6e0972be51ab93c0fc2ece2ba735badb269f0f1da4f17b641b7e9905e3807
Nov 17 01:34:24.075 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-7/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-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 17 01:34:24.518 INFO [stdout] 789d6157feefb90b1faf2eaf58ab7dd161a4b4a060b054e320e95db38adea2ef
Nov 17 01:34:24.523 INFO running `"docker" "start" "-a" "789d6157feefb90b1faf2eaf58ab7dd161a4b4a060b054e320e95db38adea2ef"`
Nov 17 01:34:25.739 INFO [stderr] usermod: no changes
Nov 17 01:34:25.779 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Nov 17 01:34:25.783 INFO [stderr]      Running /target/debug/deps/practice-02b8341fb9edad7a
Nov 17 01:34:25.797 INFO [stdout] 
Nov 17 01:34:25.797 INFO [stdout] running 0 tests
Nov 17 01:34:25.798 INFO [stdout] 
Nov 17 01:34:25.798 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 17 01:34:25.798 INFO [stdout] 
Nov 17 01:34:25.808 INFO [stderr] su: No module specific data is present
Nov 17 01:34:26.622 INFO running `"docker" "inspect" "789d6157feefb90b1faf2eaf58ab7dd161a4b4a060b054e320e95db38adea2ef"`
Nov 17 01:34:27.016 INFO running `"docker" "rm" "-f" "789d6157feefb90b1faf2eaf58ab7dd161a4b4a060b054e320e95db38adea2ef"`
Nov 17 01:34:27.413 INFO [stdout] 789d6157feefb90b1faf2eaf58ab7dd161a4b4a060b054e320e95db38adea2ef