Dec 04 08:14:45.904 INFO checking tperdue321/rust_basics against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 08:14:45.904 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-alt check --frozen --all --all-targets" "-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 04 08:14:46.367 INFO [stdout] e3eb05a8bc5e1a36f1c8224b5e6db2e6374aa004801ffdc4183212913d86f19a
Dec 04 08:14:46.369 INFO running `"docker" "start" "-a" "e3eb05a8bc5e1a36f1c8224b5e6db2e6374aa004801ffdc4183212913d86f19a"`
Dec 04 08:14:47.471 INFO [stderr] usermod: no changes
Dec 04 08:14:47.542 INFO [stderr]     Checking basics v0.1.0 (/source)
Dec 04 08:14:47.763 INFO [stderr] warning: unused variable: `a`
Dec 04 08:14:47.763 INFO [stderr]  --> src/main.rs:9:9
Dec 04 08:14:47.763 INFO [stderr]   |
Dec 04 08:14:47.763 INFO [stderr] 9 |     let a: i32 = 1;
Dec 04 08:14:47.763 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 04 08:14:47.763 INFO [stderr]   |
Dec 04 08:14:47.763 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 04 08:14:47.763 INFO [stderr] 
Dec 04 08:14:47.763 INFO [stderr] warning: variable `b` is assigned to, but never used
Dec 04 08:14:47.763 INFO [stderr]   --> src/main.rs:14:13
Dec 04 08:14:47.763 INFO [stderr]    |
Dec 04 08:14:47.763 INFO [stderr] 14 |     let mut b: i32 = 15;
Dec 04 08:14:47.763 INFO [stderr]    |             ^
Dec 04 08:14:47.763 INFO [stderr]    |
Dec 04 08:14:47.763 INFO [stderr]    = note: consider using `_b` instead
Dec 04 08:14:47.763 INFO [stderr] 
Dec 04 08:14:47.763 INFO [stderr] warning: value assigned to `b` is never read
Dec 04 08:14:47.763 INFO [stderr]   --> src/main.rs:15:5
Dec 04 08:14:47.763 INFO [stderr]    |
Dec 04 08:14:47.763 INFO [stderr] 15 |     b = 25;
Dec 04 08:14:47.763 INFO [stderr]    |     ^
Dec 04 08:14:47.763 INFO [stderr]    |
Dec 04 08:14:47.763 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 04 08:14:47.763 INFO [stderr] 
Dec 04 08:14:47.763 INFO [stderr] warning: unused variable: `x`
Dec 04 08:14:47.763 INFO [stderr]   --> src/main.rs:17:9
Dec 04 08:14:47.763 INFO [stderr]    |
Dec 04 08:14:47.763 INFO [stderr] 17 |     let x: i32; // bindings need to be given a starting val. this is bad
Dec 04 08:14:47.763 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 08:14:47.763 INFO [stderr] 
Dec 04 08:14:47.763 INFO [stderr] warning: value assigned to `x` is never read
Dec 04 08:14:47.763 INFO [stderr]   --> src/main.rs:38:13
Dec 04 08:14:47.763 INFO [stderr]    |
Dec 04 08:14:47.763 INFO [stderr] 38 |     let mut x: i32 = 1;
Dec 04 08:14:47.763 INFO [stderr]    |             ^
Dec 04 08:14:47.763 INFO [stderr] 
Dec 04 08:14:47.763 INFO [stderr] warning: unused variable: `y`
Dec 04 08:14:47.763 INFO [stderr]   --> src/main.rs:42:9
Dec 04 08:14:47.763 INFO [stderr]    |
Dec 04 08:14:47.763 INFO [stderr] 42 |     let y = 4;
Dec 04 08:14:47.763 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 04 08:14:47.763 INFO [stderr] 
Dec 04 08:14:47.763 INFO [stderr] warning: unused variable: `y`
Dec 04 08:14:47.763 INFO [stderr]   --> src/main.rs:45:9
Dec 04 08:14:47.763 INFO [stderr]    |
Dec 04 08:14:47.763 INFO [stderr] 45 |     let y = "I can also be bound to text!"; // `y` is now of a different type.
Dec 04 08:14:47.763 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 04 08:14:47.763 INFO [stderr] 
Dec 04 08:14:47.763 INFO [stderr] warning: unused variable: `x`
Dec 04 08:14:47.763 INFO [stderr]   --> src/main.rs:60:9
Dec 04 08:14:47.763 INFO [stderr]    |
Dec 04 08:14:47.763 INFO [stderr] 60 |     let x = return_int_plus_1(1);
Dec 04 08:14:47.763 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 08:14:47.763 INFO [stderr] 
Dec 04 08:14:47.771 INFO [stderr] warning: function is never used: `diverges`
Dec 04 08:14:47.771 INFO [stderr]   --> src/main.rs:93:1
Dec 04 08:14:47.771 INFO [stderr]    |
Dec 04 08:14:47.771 INFO [stderr] 93 | fn diverges() -> ! {
Dec 04 08:14:47.771 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 04 08:14:47.771 INFO [stderr]    |
Dec 04 08:14:47.771 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 08:14:47.771 INFO [stderr] 
Dec 04 08:14:47.840 INFO [stderr] warning: unused variable: `a`
Dec 04 08:14:47.840 INFO [stderr]  --> src/main.rs:9:9
Dec 04 08:14:47.840 INFO [stderr]   |
Dec 04 08:14:47.840 INFO [stderr] 9 |     let a: i32 = 1;
Dec 04 08:14:47.840 INFO [stderr]   |         ^ help: consider using `_a` instead
Dec 04 08:14:47.840 INFO [stderr]   |
Dec 04 08:14:47.840 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 04 08:14:47.840 INFO [stderr] 
Dec 04 08:14:47.840 INFO [stderr] warning: variable `b` is assigned to, but never used
Dec 04 08:14:47.840 INFO [stderr]   --> src/main.rs:14:13
Dec 04 08:14:47.841 INFO [stderr]    |
Dec 04 08:14:47.841 INFO [stderr] 14 |     let mut b: i32 = 15;
Dec 04 08:14:47.841 INFO [stderr]    |             ^
Dec 04 08:14:47.841 INFO [stderr]    |
Dec 04 08:14:47.841 INFO [stderr]    = note: consider using `_b` instead
Dec 04 08:14:47.841 INFO [stderr] 
Dec 04 08:14:47.841 INFO [stderr] warning: value assigned to `b` is never read
Dec 04 08:14:47.841 INFO [stderr]   --> src/main.rs:15:5
Dec 04 08:14:47.841 INFO [stderr]    |
Dec 04 08:14:47.841 INFO [stderr] 15 |     b = 25;
Dec 04 08:14:47.841 INFO [stderr]    |     ^
Dec 04 08:14:47.841 INFO [stderr]    |
Dec 04 08:14:47.841 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 04 08:14:47.841 INFO [stderr] 
Dec 04 08:14:47.841 INFO [stderr] warning: unused variable: `x`
Dec 04 08:14:47.841 INFO [stderr]   --> src/main.rs:17:9
Dec 04 08:14:47.841 INFO [stderr]    |
Dec 04 08:14:47.841 INFO [stderr] 17 |     let x: i32; // bindings need to be given a starting val. this is bad
Dec 04 08:14:47.841 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 08:14:47.841 INFO [stderr] 
Dec 04 08:14:47.841 INFO [stderr] warning: value assigned to `x` is never read
Dec 04 08:14:47.841 INFO [stderr]   --> src/main.rs:38:13
Dec 04 08:14:47.841 INFO [stderr]    |
Dec 04 08:14:47.841 INFO [stderr] 38 |     let mut x: i32 = 1;
Dec 04 08:14:47.841 INFO [stderr]    |             ^
Dec 04 08:14:47.841 INFO [stderr] 
Dec 04 08:14:47.841 INFO [stderr] warning: unused variable: `y`
Dec 04 08:14:47.841 INFO [stderr]   --> src/main.rs:42:9
Dec 04 08:14:47.841 INFO [stderr]    |
Dec 04 08:14:47.841 INFO [stderr] 42 |     let y = 4;
Dec 04 08:14:47.841 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 04 08:14:47.841 INFO [stderr] 
Dec 04 08:14:47.841 INFO [stderr] warning: unused variable: `y`
Dec 04 08:14:47.841 INFO [stderr]   --> src/main.rs:45:9
Dec 04 08:14:47.841 INFO [stderr]    |
Dec 04 08:14:47.841 INFO [stderr] 45 |     let y = "I can also be bound to text!"; // `y` is now of a different type.
Dec 04 08:14:47.841 INFO [stderr]    |         ^ help: consider using `_y` instead
Dec 04 08:14:47.841 INFO [stderr] 
Dec 04 08:14:47.841 INFO [stderr] warning: unused variable: `x`
Dec 04 08:14:47.841 INFO [stderr]   --> src/main.rs:60:9
Dec 04 08:14:47.841 INFO [stderr]    |
Dec 04 08:14:47.841 INFO [stderr] 60 |     let x = return_int_plus_1(1);
Dec 04 08:14:47.841 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 08:14:47.841 INFO [stderr] 
Dec 04 08:14:47.847 INFO [stderr] warning: function is never used: `diverges`
Dec 04 08:14:47.847 INFO [stderr]   --> src/main.rs:93:1
Dec 04 08:14:47.847 INFO [stderr]    |
Dec 04 08:14:47.847 INFO [stderr] 93 | fn diverges() -> ! {
Dec 04 08:14:47.847 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 04 08:14:47.847 INFO [stderr]    |
Dec 04 08:14:47.847 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 08:14:47.847 INFO [stderr] 
Dec 04 08:14:47.863 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.37s
Dec 04 08:14:47.866 INFO [stderr] su: No module specific data is present
Dec 04 08:14:48.494 INFO running `"docker" "inspect" "e3eb05a8bc5e1a36f1c8224b5e6db2e6374aa004801ffdc4183212913d86f19a"`
Dec 04 08:14:48.805 INFO running `"docker" "rm" "-f" "e3eb05a8bc5e1a36f1c8224b5e6db2e6374aa004801ffdc4183212913d86f19a"`
Dec 04 08:14:49.111 INFO [stdout] e3eb05a8bc5e1a36f1c8224b5e6db2e6374aa004801ffdc4183212913d86f19a