Nov 27 18:19:25.801 INFO checking tperdue321/rust_basics against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074 Nov 27 18:19:25.801 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-7/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-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"` Nov 27 18:19:26.123 INFO [stdout] 75e3afeb49295cace8b5d3f29040cf2598a75f8c0583df2da13ccab88aff9dff Nov 27 18:19:26.127 INFO running `"docker" "start" "-a" "75e3afeb49295cace8b5d3f29040cf2598a75f8c0583df2da13ccab88aff9dff"` Nov 27 18:19:26.876 INFO [stderr] usermod: no changes Nov 27 18:19:26.911 INFO [stderr] Checking basics v0.1.0 (/source) Nov 27 18:19:27.108 INFO [stderr] warning: unused variable: `a` Nov 27 18:19:27.108 INFO [stderr] --> src/main.rs:9:9 Nov 27 18:19:27.108 INFO [stderr] | Nov 27 18:19:27.108 INFO [stderr] 9 | let a: i32 = 1; Nov 27 18:19:27.108 INFO [stderr] | ^ help: consider using `_a` instead Nov 27 18:19:27.108 INFO [stderr] | Nov 27 18:19:27.108 INFO [stderr] = note: #[warn(unused_variables)] on by default Nov 27 18:19:27.108 INFO [stderr] Nov 27 18:19:27.108 INFO [stderr] warning: variable `b` is assigned to, but never used Nov 27 18:19:27.108 INFO [stderr] --> src/main.rs:14:13 Nov 27 18:19:27.108 INFO [stderr] | Nov 27 18:19:27.108 INFO [stderr] 14 | let mut b: i32 = 15; Nov 27 18:19:27.108 INFO [stderr] | ^ Nov 27 18:19:27.108 INFO [stderr] | Nov 27 18:19:27.108 INFO [stderr] = note: consider using `_b` instead Nov 27 18:19:27.108 INFO [stderr] Nov 27 18:19:27.108 INFO [stderr] warning: value assigned to `b` is never read Nov 27 18:19:27.108 INFO [stderr] --> src/main.rs:15:5 Nov 27 18:19:27.108 INFO [stderr] | Nov 27 18:19:27.108 INFO [stderr] 15 | b = 25; Nov 27 18:19:27.108 INFO [stderr] | ^ Nov 27 18:19:27.108 INFO [stderr] | Nov 27 18:19:27.108 INFO [stderr] = note: #[warn(unused_assignments)] on by default Nov 27 18:19:27.108 INFO [stderr] Nov 27 18:19:27.108 INFO [stderr] warning: unused variable: `x` Nov 27 18:19:27.108 INFO [stderr] --> src/main.rs:17:9 Nov 27 18:19:27.108 INFO [stderr] | Nov 27 18:19:27.108 INFO [stderr] 17 | let x: i32; // bindings need to be given a starting val. this is bad Nov 27 18:19:27.108 INFO [stderr] | ^ help: consider using `_x` instead Nov 27 18:19:27.108 INFO [stderr] Nov 27 18:19:27.108 INFO [stderr] warning: value assigned to `x` is never read Nov 27 18:19:27.108 INFO [stderr] --> src/main.rs:38:13 Nov 27 18:19:27.108 INFO [stderr] | Nov 27 18:19:27.108 INFO [stderr] 38 | let mut x: i32 = 1; Nov 27 18:19:27.108 INFO [stderr] | ^ Nov 27 18:19:27.108 INFO [stderr] Nov 27 18:19:27.108 INFO [stderr] warning: unused variable: `y` Nov 27 18:19:27.109 INFO [stderr] --> src/main.rs:42:9 Nov 27 18:19:27.109 INFO [stderr] | Nov 27 18:19:27.109 INFO [stderr] 42 | let y = 4; Nov 27 18:19:27.109 INFO [stderr] | ^ help: consider using `_y` instead Nov 27 18:19:27.109 INFO [stderr] Nov 27 18:19:27.109 INFO [stderr] warning: unused variable: `y` Nov 27 18:19:27.109 INFO [stderr] --> src/main.rs:45:9 Nov 27 18:19:27.109 INFO [stderr] | Nov 27 18:19:27.109 INFO [stderr] 45 | let y = "I can also be bound to text!"; // `y` is now of a different type. Nov 27 18:19:27.109 INFO [stderr] | ^ help: consider using `_y` instead Nov 27 18:19:27.109 INFO [stderr] Nov 27 18:19:27.109 INFO [stderr] warning: unused variable: `x` Nov 27 18:19:27.109 INFO [stderr] --> src/main.rs:60:9 Nov 27 18:19:27.109 INFO [stderr] | Nov 27 18:19:27.109 INFO [stderr] 60 | let x = return_int_plus_1(1); Nov 27 18:19:27.109 INFO [stderr] | ^ help: consider using `_x` instead Nov 27 18:19:27.109 INFO [stderr] Nov 27 18:19:27.111 INFO [stderr] warning: function is never used: `diverges` Nov 27 18:19:27.111 INFO [stderr] --> src/main.rs:93:1 Nov 27 18:19:27.111 INFO [stderr] | Nov 27 18:19:27.111 INFO [stderr] 93 | fn diverges() -> ! { Nov 27 18:19:27.111 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Nov 27 18:19:27.111 INFO [stderr] | Nov 27 18:19:27.111 INFO [stderr] = note: #[warn(dead_code)] on by default Nov 27 18:19:27.111 INFO [stderr] Nov 27 18:19:27.123 INFO [stderr] warning: unused variable: `a` Nov 27 18:19:27.123 INFO [stderr] --> src/main.rs:9:9 Nov 27 18:19:27.123 INFO [stderr] | Nov 27 18:19:27.123 INFO [stderr] 9 | let a: i32 = 1; Nov 27 18:19:27.123 INFO [stderr] | ^ help: consider using `_a` instead Nov 27 18:19:27.123 INFO [stderr] | Nov 27 18:19:27.123 INFO [stderr] = note: #[warn(unused_variables)] on by default Nov 27 18:19:27.123 INFO [stderr] Nov 27 18:19:27.123 INFO [stderr] warning: variable `b` is assigned to, but never used Nov 27 18:19:27.123 INFO [stderr] --> src/main.rs:14:13 Nov 27 18:19:27.123 INFO [stderr] | Nov 27 18:19:27.123 INFO [stderr] 14 | let mut b: i32 = 15; Nov 27 18:19:27.123 INFO [stderr] | ^ Nov 27 18:19:27.123 INFO [stderr] | Nov 27 18:19:27.123 INFO [stderr] = note: consider using `_b` instead Nov 27 18:19:27.123 INFO [stderr] Nov 27 18:19:27.123 INFO [stderr] warning: value assigned to `b` is never read Nov 27 18:19:27.123 INFO [stderr] --> src/main.rs:15:5 Nov 27 18:19:27.123 INFO [stderr] | Nov 27 18:19:27.123 INFO [stderr] 15 | b = 25; Nov 27 18:19:27.123 INFO [stderr] | ^ Nov 27 18:19:27.123 INFO [stderr] | Nov 27 18:19:27.123 INFO [stderr] = note: #[warn(unused_assignments)] on by default Nov 27 18:19:27.123 INFO [stderr] Nov 27 18:19:27.123 INFO [stderr] warning: unused variable: `x` Nov 27 18:19:27.123 INFO [stderr] --> src/main.rs:17:9 Nov 27 18:19:27.123 INFO [stderr] | Nov 27 18:19:27.123 INFO [stderr] 17 | let x: i32; // bindings need to be given a starting val. this is bad Nov 27 18:19:27.123 INFO [stderr] | ^ help: consider using `_x` instead Nov 27 18:19:27.123 INFO [stderr] Nov 27 18:19:27.123 INFO [stderr] warning: value assigned to `x` is never read Nov 27 18:19:27.123 INFO [stderr] --> src/main.rs:38:13 Nov 27 18:19:27.123 INFO [stderr] | Nov 27 18:19:27.123 INFO [stderr] 38 | let mut x: i32 = 1; Nov 27 18:19:27.123 INFO [stderr] | ^ Nov 27 18:19:27.123 INFO [stderr] Nov 27 18:19:27.123 INFO [stderr] warning: unused variable: `y` Nov 27 18:19:27.123 INFO [stderr] --> src/main.rs:42:9 Nov 27 18:19:27.123 INFO [stderr] | Nov 27 18:19:27.123 INFO [stderr] 42 | let y = 4; Nov 27 18:19:27.123 INFO [stderr] | ^ help: consider using `_y` instead Nov 27 18:19:27.123 INFO [stderr] Nov 27 18:19:27.123 INFO [stderr] warning: unused variable: `y` Nov 27 18:19:27.123 INFO [stderr] --> src/main.rs:45:9 Nov 27 18:19:27.123 INFO [stderr] | Nov 27 18:19:27.123 INFO [stderr] 45 | let y = "I can also be bound to text!"; // `y` is now of a different type. Nov 27 18:19:27.123 INFO [stderr] | ^ help: consider using `_y` instead Nov 27 18:19:27.123 INFO [stderr] Nov 27 18:19:27.123 INFO [stderr] warning: unused variable: `x` Nov 27 18:19:27.124 INFO [stderr] --> src/main.rs:60:9 Nov 27 18:19:27.124 INFO [stderr] | Nov 27 18:19:27.124 INFO [stderr] 60 | let x = return_int_plus_1(1); Nov 27 18:19:27.124 INFO [stderr] | ^ help: consider using `_x` instead Nov 27 18:19:27.124 INFO [stderr] Nov 27 18:19:27.148 INFO [stderr] warning: function is never used: `diverges` Nov 27 18:19:27.148 INFO [stderr] --> src/main.rs:93:1 Nov 27 18:19:27.148 INFO [stderr] | Nov 27 18:19:27.148 INFO [stderr] 93 | fn diverges() -> ! { Nov 27 18:19:27.148 INFO [stderr] | ^^^^^^^^^^^^^^^^^^ Nov 27 18:19:27.148 INFO [stderr] | Nov 27 18:19:27.148 INFO [stderr] = note: #[warn(dead_code)] on by default Nov 27 18:19:27.148 INFO [stderr] Nov 27 18:19:27.163 INFO [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.26s Nov 27 18:19:27.163 INFO [stderr] su: No module specific data is present Nov 27 18:19:27.582 INFO running `"docker" "inspect" "75e3afeb49295cace8b5d3f29040cf2598a75f8c0583df2da13ccab88aff9dff"` Nov 27 18:19:27.844 INFO running `"docker" "rm" "-f" "75e3afeb49295cace8b5d3f29040cf2598a75f8c0583df2da13ccab88aff9dff"` Nov 27 18:19:28.092 INFO [stdout] 75e3afeb49295cace8b5d3f29040cf2598a75f8c0583df2da13ccab88aff9dff