Dec 01 16:05:32.528 INFO testing hardvain/rust-practice against 1.30.1 for beta-1.31-5
Dec 01 16:05:32.529 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/beta-1.31-5/1.30.1:/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 +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 16:05:32.947 INFO [stdout] 7c02f31eaca211c21091c8ca8a92eb666b0bc922389b4fb3852ef5873b3fccfc
Dec 01 16:05:32.949 INFO running `"docker" "start" "-a" "7c02f31eaca211c21091c8ca8a92eb666b0bc922389b4fb3852ef5873b3fccfc"`
Dec 01 16:05:34.106 INFO [stderr] usermod: no changes
Dec 01 16:05:34.191 INFO [stderr]    Compiling practice v0.1.0 (/source)
Dec 01 16:05:34.604 INFO [stderr] warning: unused variable: `sample`
Dec 01 16:05:34.604 INFO [stderr]  --> src/main.rs:9:24
Dec 01 16:05:34.605 INFO [stderr]   |
Dec 01 16:05:34.605 INFO [stderr] 9 | fn taking_owned_sample(sample: Sample) {}
Dec 01 16:05:34.605 INFO [stderr]   |                        ^^^^^^ help: consider using `_sample` instead
Dec 01 16:05:34.605 INFO [stderr]   |
Dec 01 16:05:34.605 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 01 16:05:34.605 INFO [stderr] 
Dec 01 16:05:34.605 INFO [stderr] warning: unused variable: `sample`
Dec 01 16:05:34.605 INFO [stderr]   --> src/main.rs:10:25
Dec 01 16:05:34.605 INFO [stderr]    |
Dec 01 16:05:34.605 INFO [stderr] 10 | fn taking_shared_sample(sample: &Sample) {}
Dec 01 16:05:34.605 INFO [stderr]    |                         ^^^^^^ help: consider using `_sample` instead
Dec 01 16:05:34.605 INFO [stderr] 
Dec 01 16:05:34.605 INFO [stderr] warning: unused variable: `sample`
Dec 01 16:05:34.605 INFO [stderr]   --> src/main.rs:11:26
Dec 01 16:05:34.605 INFO [stderr]    |
Dec 01 16:05:34.605 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Dec 01 16:05:34.605 INFO [stderr]    |                          ^^^^^^ help: consider using `_sample` instead
Dec 01 16:05:34.605 INFO [stderr] 
Dec 01 16:05:34.605 INFO [stderr] warning: unused variable: `sample`
Dec 01 16:05:34.605 INFO [stderr]   --> src/main.rs:37:9
Dec 01 16:05:34.605 INFO [stderr]    |
Dec 01 16:05:34.605 INFO [stderr] 37 |     let sample = Sample { key: 1 };
Dec 01 16:05:34.605 INFO [stderr]    |         ^^^^^^ help: consider using `_sample` instead
Dec 01 16:05:34.605 INFO [stderr] 
Dec 01 16:05:34.605 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:34.605 INFO [stderr]   --> src/main.rs:44:9
Dec 01 16:05:34.607 INFO [stderr]    |
Dec 01 16:05:34.607 INFO [stderr] 44 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:34.607 INFO [stderr]    |         ----^^^^^^
Dec 01 16:05:34.607 INFO [stderr]    |         |
Dec 01 16:05:34.607 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:05:34.607 INFO [stderr]    |
Dec 01 16:05:34.607 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 01 16:05:34.607 INFO [stderr] 
Dec 01 16:05:34.607 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:34.607 INFO [stderr]   --> src/main.rs:60:9
Dec 01 16:05:34.607 INFO [stderr]    |
Dec 01 16:05:34.607 INFO [stderr] 60 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:34.607 INFO [stderr]    |         ----^^^^^^
Dec 01 16:05:34.607 INFO [stderr]    |         |
Dec 01 16:05:34.607 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:05:34.607 INFO [stderr] 
Dec 01 16:05:34.607 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:34.607 INFO [stderr]    --> src/main.rs:113:9
Dec 01 16:05:34.607 INFO [stderr]     |
Dec 01 16:05:34.607 INFO [stderr] 113 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:34.607 INFO [stderr]     |         ----^^^^^^
Dec 01 16:05:34.607 INFO [stderr]     |         |
Dec 01 16:05:34.607 INFO [stderr]     |         help: remove this `mut`
Dec 01 16:05:34.607 INFO [stderr] 
Dec 01 16:05:34.607 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:34.607 INFO [stderr]    --> src/main.rs:121:9
Dec 01 16:05:34.607 INFO [stderr]     |
Dec 01 16:05:34.607 INFO [stderr] 121 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:34.607 INFO [stderr]     |         ----^^^^^^
Dec 01 16:05:34.607 INFO [stderr]     |         |
Dec 01 16:05:34.607 INFO [stderr]     |         help: remove this `mut`
Dec 01 16:05:34.607 INFO [stderr] 
Dec 01 16:05:34.611 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:34.611 INFO [stderr]    --> src/main.rs:130:9
Dec 01 16:05:34.611 INFO [stderr]     |
Dec 01 16:05:34.611 INFO [stderr] 130 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:34.611 INFO [stderr]     |         ----^^^^^^
Dec 01 16:05:34.611 INFO [stderr]     |         |
Dec 01 16:05:34.611 INFO [stderr]     |         help: remove this `mut`
Dec 01 16:05:34.611 INFO [stderr] 
Dec 01 16:05:34.611 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:34.611 INFO [stderr]    --> src/main.rs:137:9
Dec 01 16:05:34.611 INFO [stderr]     |
Dec 01 16:05:34.611 INFO [stderr] 137 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:34.611 INFO [stderr]     |         ----^^^^^^
Dec 01 16:05:34.611 INFO [stderr]     |         |
Dec 01 16:05:34.611 INFO [stderr]     |         help: remove this `mut`
Dec 01 16:05:34.611 INFO [stderr] 
Dec 01 16:05:34.611 INFO [stderr] warning: field is never used: `key`
Dec 01 16:05:34.611 INFO [stderr]  --> src/main.rs:2:3
Dec 01 16:05:34.611 INFO [stderr]   |
Dec 01 16:05:34.611 INFO [stderr] 2 |   key: i32,
Dec 01 16:05:34.611 INFO [stderr]   |   ^^^^^^^^
Dec 01 16:05:34.611 INFO [stderr]   |
Dec 01 16:05:34.611 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 01 16:05:34.611 INFO [stderr] 
Dec 01 16:05:34.611 INFO [stderr] warning: function is never used: `taking_mutable_sample`
Dec 01 16:05:34.611 INFO [stderr]   --> src/main.rs:11:1
Dec 01 16:05:34.611 INFO [stderr]    |
Dec 01 16:05:34.611 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Dec 01 16:05:34.611 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 16:05:34.611 INFO [stderr] 
Dec 01 16:05:34.611 INFO [stderr] warning: function is never used: `mutable_binding_function_calls`
Dec 01 16:05:34.611 INFO [stderr]   --> src/main.rs:42:1
Dec 01 16:05:34.611 INFO [stderr]    |
Dec 01 16:05:34.611 INFO [stderr] 42 | fn mutable_binding_function_calls() {
Dec 01 16:05:34.611 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 16:05:34.611 INFO [stderr] 
Dec 01 16:05:34.955 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
Dec 01 16:05:34.955 INFO [stderr] su: No module specific data is present
Dec 01 16:05:35.308 INFO running `"docker" "inspect" "7c02f31eaca211c21091c8ca8a92eb666b0bc922389b4fb3852ef5873b3fccfc"`
Dec 01 16:05:35.468 INFO running `"docker" "rm" "-f" "7c02f31eaca211c21091c8ca8a92eb666b0bc922389b4fb3852ef5873b3fccfc"`
Dec 01 16:05:35.607 INFO [stdout] 7c02f31eaca211c21091c8ca8a92eb666b0bc922389b4fb3852ef5873b3fccfc
Dec 01 16:05:35.613 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 16:05:35.973 INFO [stdout] 737f4d95ec59f04bf3c2cfa17684667ba674a0608fa381371c5aaf7b4a6fd5b9
Dec 01 16:05:35.976 INFO running `"docker" "start" "-a" "737f4d95ec59f04bf3c2cfa17684667ba674a0608fa381371c5aaf7b4a6fd5b9"`
Dec 01 16:05:36.611 INFO [stderr] usermod: no changes
Dec 01 16:05:36.633 INFO [stderr]    Compiling practice v0.1.0 (/source)
Dec 01 16:05:37.045 INFO [stderr] warning: unused variable: `sample`
Dec 01 16:05:37.045 INFO [stderr]  --> src/main.rs:9:24
Dec 01 16:05:37.045 INFO [stderr]   |
Dec 01 16:05:37.045 INFO [stderr] 9 | fn taking_owned_sample(sample: Sample) {}
Dec 01 16:05:37.045 INFO [stderr]   |                        ^^^^^^ help: consider using `_sample` instead
Dec 01 16:05:37.045 INFO [stderr]   |
Dec 01 16:05:37.045 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 01 16:05:37.045 INFO [stderr] 
Dec 01 16:05:37.045 INFO [stderr] warning: unused variable: `sample`
Dec 01 16:05:37.045 INFO [stderr]   --> src/main.rs:10:25
Dec 01 16:05:37.045 INFO [stderr]    |
Dec 01 16:05:37.045 INFO [stderr] 10 | fn taking_shared_sample(sample: &Sample) {}
Dec 01 16:05:37.046 INFO [stderr]    |                         ^^^^^^ help: consider using `_sample` instead
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: unused variable: `sample`
Dec 01 16:05:37.046 INFO [stderr]   --> src/main.rs:11:26
Dec 01 16:05:37.046 INFO [stderr]    |
Dec 01 16:05:37.046 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Dec 01 16:05:37.046 INFO [stderr]    |                          ^^^^^^ help: consider using `_sample` instead
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: unused variable: `sample`
Dec 01 16:05:37.046 INFO [stderr]   --> src/main.rs:37:9
Dec 01 16:05:37.046 INFO [stderr]    |
Dec 01 16:05:37.046 INFO [stderr] 37 |     let sample = Sample { key: 1 };
Dec 01 16:05:37.046 INFO [stderr]    |         ^^^^^^ help: consider using `_sample` instead
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:37.046 INFO [stderr]   --> src/main.rs:44:9
Dec 01 16:05:37.046 INFO [stderr]    |
Dec 01 16:05:37.046 INFO [stderr] 44 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:37.046 INFO [stderr]    |         ----^^^^^^
Dec 01 16:05:37.046 INFO [stderr]    |         |
Dec 01 16:05:37.046 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:05:37.046 INFO [stderr]    |
Dec 01 16:05:37.046 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:37.046 INFO [stderr]   --> src/main.rs:60:9
Dec 01 16:05:37.046 INFO [stderr]    |
Dec 01 16:05:37.046 INFO [stderr] 60 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:37.046 INFO [stderr]    |         ----^^^^^^
Dec 01 16:05:37.046 INFO [stderr]    |         |
Dec 01 16:05:37.046 INFO [stderr]    |         help: remove this `mut`
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:37.046 INFO [stderr]    --> src/main.rs:113:9
Dec 01 16:05:37.046 INFO [stderr]     |
Dec 01 16:05:37.046 INFO [stderr] 113 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:37.046 INFO [stderr]     |         ----^^^^^^
Dec 01 16:05:37.046 INFO [stderr]     |         |
Dec 01 16:05:37.046 INFO [stderr]     |         help: remove this `mut`
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:37.046 INFO [stderr]    --> src/main.rs:121:9
Dec 01 16:05:37.046 INFO [stderr]     |
Dec 01 16:05:37.046 INFO [stderr] 121 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:37.046 INFO [stderr]     |         ----^^^^^^
Dec 01 16:05:37.046 INFO [stderr]     |         |
Dec 01 16:05:37.046 INFO [stderr]     |         help: remove this `mut`
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:37.046 INFO [stderr]    --> src/main.rs:130:9
Dec 01 16:05:37.046 INFO [stderr]     |
Dec 01 16:05:37.046 INFO [stderr] 130 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:37.046 INFO [stderr]     |         ----^^^^^^
Dec 01 16:05:37.046 INFO [stderr]     |         |
Dec 01 16:05:37.046 INFO [stderr]     |         help: remove this `mut`
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: variable does not need to be mutable
Dec 01 16:05:37.046 INFO [stderr]    --> src/main.rs:137:9
Dec 01 16:05:37.046 INFO [stderr]     |
Dec 01 16:05:37.046 INFO [stderr] 137 |     let mut sample = Sample { key: 1 };
Dec 01 16:05:37.046 INFO [stderr]     |         ----^^^^^^
Dec 01 16:05:37.046 INFO [stderr]     |         |
Dec 01 16:05:37.046 INFO [stderr]     |         help: remove this `mut`
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: field is never used: `key`
Dec 01 16:05:37.046 INFO [stderr]  --> src/main.rs:2:3
Dec 01 16:05:37.046 INFO [stderr]   |
Dec 01 16:05:37.046 INFO [stderr] 2 |   key: i32,
Dec 01 16:05:37.046 INFO [stderr]   |   ^^^^^^^^
Dec 01 16:05:37.046 INFO [stderr]   |
Dec 01 16:05:37.046 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: function is never used: `taking_mutable_sample`
Dec 01 16:05:37.046 INFO [stderr]   --> src/main.rs:11:1
Dec 01 16:05:37.046 INFO [stderr]    |
Dec 01 16:05:37.046 INFO [stderr] 11 | fn taking_mutable_sample(sample: &mut Sample) {}
Dec 01 16:05:37.046 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.046 INFO [stderr] warning: function is never used: `mutable_binding_function_calls`
Dec 01 16:05:37.046 INFO [stderr]   --> src/main.rs:42:1
Dec 01 16:05:37.046 INFO [stderr]    |
Dec 01 16:05:37.046 INFO [stderr] 42 | fn mutable_binding_function_calls() {
Dec 01 16:05:37.046 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 01 16:05:37.046 INFO [stderr] 
Dec 01 16:05:37.424 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
Dec 01 16:05:37.426 INFO [stderr] su: No module specific data is present
Dec 01 16:05:37.760 INFO running `"docker" "inspect" "737f4d95ec59f04bf3c2cfa17684667ba674a0608fa381371c5aaf7b4a6fd5b9"`
Dec 01 16:05:37.934 INFO running `"docker" "rm" "-f" "737f4d95ec59f04bf3c2cfa17684667ba674a0608fa381371c5aaf7b4a6fd5b9"`
Dec 01 16:05:38.091 INFO [stdout] 737f4d95ec59f04bf3c2cfa17684667ba674a0608fa381371c5aaf7b4a6fd5b9
Dec 01 16:05:38.096 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-7/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/beta-1.31-5/1.30.1:/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 +1.30.1 test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 01 16:05:38.542 INFO [stdout] f17266e4bb4e4a5021b3a5a3bdd688cdcc48ca6252778c2ee687c20954bde0b9
Dec 01 16:05:38.544 INFO running `"docker" "start" "-a" "f17266e4bb4e4a5021b3a5a3bdd688cdcc48ca6252778c2ee687c20954bde0b9"`
Dec 01 16:05:38.990 INFO [stderr] usermod: no changes
Dec 01 16:05:39.019 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
Dec 01 16:05:39.019 INFO [stderr]      Running /target/debug/deps/practice-f023474ebd8db48c
Dec 01 16:05:39.024 INFO [stdout] 
Dec 01 16:05:39.024 INFO [stdout] running 0 tests
Dec 01 16:05:39.024 INFO [stdout] 
Dec 01 16:05:39.024 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Dec 01 16:05:39.024 INFO [stdout] 
Dec 01 16:05:39.026 INFO [stderr] su: No module specific data is present
Dec 01 16:05:39.289 INFO running `"docker" "inspect" "f17266e4bb4e4a5021b3a5a3bdd688cdcc48ca6252778c2ee687c20954bde0b9"`
Dec 01 16:05:39.398 INFO running `"docker" "rm" "-f" "f17266e4bb4e4a5021b3a5a3bdd688cdcc48ca6252778c2ee687c20954bde0b9"`
Dec 01 16:05:39.535 INFO [stdout] f17266e4bb4e4a5021b3a5a3bdd688cdcc48ca6252778c2ee687c20954bde0b9
