Nov 28 09:24:08.935 INFO checking aochagavia/rust-syntax-cheat-sheet against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 09:24:08.936 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-3/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/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 +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-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 28 09:24:09.340 INFO [stdout] 2c8341eb39f2e0c4afcdd9a85c73d48202a6d01353d326d140c1df5c50090324
Nov 28 09:24:09.345 INFO running `"docker" "start" "-a" "2c8341eb39f2e0c4afcdd9a85c73d48202a6d01353d326d140c1df5c50090324"`
Nov 28 09:24:10.376 INFO [stderr] usermod: no changes
Nov 28 09:24:10.452 INFO [stderr]     Checking syntax v0.1.0 (/source)
Nov 28 09:24:11.017 INFO [stderr] warning: unused variable: `x`
Nov 28 09:24:11.017 INFO [stderr]   --> src/main.rs:32:9
Nov 28 09:24:11.017 INFO [stderr]    |
Nov 28 09:24:11.017 INFO [stderr] 32 |     let x: i32 = 42;
Nov 28 09:24:11.017 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 28 09:24:11.017 INFO [stderr]    |
Nov 28 09:24:11.017 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: unused variable: `implicit_x`
Nov 28 09:24:11.017 INFO [stderr]   --> src/main.rs:41:9
Nov 28 09:24:11.017 INFO [stderr]    |
Nov 28 09:24:11.017 INFO [stderr] 41 |     let implicit_x = 1;
Nov 28 09:24:11.017 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_implicit_x` instead
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: unused variable: `implicit_f`
Nov 28 09:24:11.017 INFO [stderr]   --> src/main.rs:42:9
Nov 28 09:24:11.017 INFO [stderr]    |
Nov 28 09:24:11.017 INFO [stderr] 42 |     let implicit_f = 1.3;
Nov 28 09:24:11.017 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_implicit_f` instead
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: variable `mutable` is assigned to, but never used
Nov 28 09:24:11.017 INFO [stderr]   --> src/main.rs:45:13
Nov 28 09:24:11.017 INFO [stderr]    |
Nov 28 09:24:11.017 INFO [stderr] 45 |     let mut mutable = 1;
Nov 28 09:24:11.017 INFO [stderr]    |             ^^^^^^^
Nov 28 09:24:11.017 INFO [stderr]    |
Nov 28 09:24:11.017 INFO [stderr]    = note: consider using `_mutable` instead
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: value assigned to `mutable` is never read
Nov 28 09:24:11.017 INFO [stderr]   --> src/main.rs:47:5
Nov 28 09:24:11.017 INFO [stderr]    |
Nov 28 09:24:11.017 INFO [stderr] 47 |     mutable += 2;
Nov 28 09:24:11.017 INFO [stderr]    |     ^^^^^^^
Nov 28 09:24:11.017 INFO [stderr]    |
Nov 28 09:24:11.017 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: unused variable: `four_ints`
Nov 28 09:24:11.017 INFO [stderr]   --> src/main.rs:71:9
Nov 28 09:24:11.017 INFO [stderr]    |
Nov 28 09:24:11.017 INFO [stderr] 71 |     let four_ints: [i32; 4] = [1, 2, 3, 4];
Nov 28 09:24:11.017 INFO [stderr]    |         ^^^^^^^^^ help: consider using `_four_ints` instead
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: unused variable: `origin`
Nov 28 09:24:11.017 INFO [stderr]    --> src/main.rs:108:9
Nov 28 09:24:11.017 INFO [stderr]     |
Nov 28 09:24:11.017 INFO [stderr] 108 |     let origin = Point { x: 0, y: 0 };
Nov 28 09:24:11.017 INFO [stderr]     |         ^^^^^^ help: consider using `_origin` instead
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: unused variable: `origin2`
Nov 28 09:24:11.017 INFO [stderr]    --> src/main.rs:113:9
Nov 28 09:24:11.017 INFO [stderr]     |
Nov 28 09:24:11.017 INFO [stderr] 113 |     let origin2 = Point2(0, 0);
Nov 28 09:24:11.017 INFO [stderr]     |         ^^^^^^^ help: consider using `_origin2` instead
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: unused variable: `up`
Nov 28 09:24:11.017 INFO [stderr]    --> src/main.rs:144:9
Nov 28 09:24:11.017 INFO [stderr]     |
Nov 28 09:24:11.017 INFO [stderr] 144 |     let up = Direction::Up;
Nov 28 09:24:11.017 INFO [stderr]     |         ^^ help: consider using `_up` instead
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: unused variable: `two`
Nov 28 09:24:11.017 INFO [stderr]    --> src/main.rs:152:9
Nov 28 09:24:11.017 INFO [stderr]     |
Nov 28 09:24:11.017 INFO [stderr] 152 |     let two: OptionalI32 = OptionalI32::AnI32(2);
Nov 28 09:24:11.017 INFO [stderr]     |         ^^^ help: consider using `_two` instead
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: unused variable: `nothing`
Nov 28 09:24:11.017 INFO [stderr]    --> src/main.rs:153:9
Nov 28 09:24:11.017 INFO [stderr]     |
Nov 28 09:24:11.017 INFO [stderr] 153 |     let nothing = OptionalI32::Nothing;
Nov 28 09:24:11.017 INFO [stderr]     |         ^^^^^^^ help: consider using `_nothing` instead
Nov 28 09:24:11.017 INFO [stderr] 
Nov 28 09:24:11.017 INFO [stderr] warning: unused variable: `value`
Nov 28 09:24:11.017 INFO [stderr]    --> src/main.rs:266:9
Nov 28 09:24:11.017 INFO [stderr]     |
Nov 28 09:24:11.018 INFO [stderr] 266 |     let value = if true { "good" } else { "bad" };
Nov 28 09:24:11.018 INFO [stderr]     |         ^^^^^ help: consider using `_value` instead
Nov 28 09:24:11.018 INFO [stderr] 
Nov 28 09:24:11.018 INFO [stderr] warning: unused variable: `another_ref_var`
Nov 28 09:24:11.018 INFO [stderr]    --> src/main.rs:296:9
Nov 28 09:24:11.018 INFO [stderr]     |
Nov 28 09:24:11.018 INFO [stderr] 296 |     let another_ref_var = &var;
Nov 28 09:24:11.018 INFO [stderr]     |         ^^^^^^^^^^^^^^^ help: consider using `_another_ref_var` instead
Nov 28 09:24:11.018 INFO [stderr] 
Nov 28 09:24:11.048 INFO [stderr] warning: variable does not need to be mutable
Nov 28 09:24:11.048 INFO [stderr]    --> src/main.rs:294:9
Nov 28 09:24:11.048 INFO [stderr]     |
Nov 28 09:24:11.048 INFO [stderr] 294 |     let mut var = 4;
Nov 28 09:24:11.048 INFO [stderr]     |         ----^^^
Nov 28 09:24:11.048 INFO [stderr]     |         |
Nov 28 09:24:11.048 INFO [stderr]     |         help: remove this `mut`
Nov 28 09:24:11.048 INFO [stderr]     |
Nov 28 09:24:11.048 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 09:24:11.048 INFO [stderr] 
Nov 28 09:24:11.049 INFO [stderr] warning: function is never used: `add_ints`
Nov 28 09:24:11.049 INFO [stderr]   --> src/main.rs:17:1
Nov 28 09:24:11.049 INFO [stderr]    |
Nov 28 09:24:11.049 INFO [stderr] 17 | fn add_ints(x: i32, y: i32) -> i32 {
Nov 28 09:24:11.049 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 09:24:11.049 INFO [stderr]    |
Nov 28 09:24:11.049 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 09:24:11.049 INFO [stderr] 
Nov 28 09:24:11.049 INFO [stderr] warning: function is never used: `add_uints`
Nov 28 09:24:11.049 INFO [stderr]   --> src/main.rs:23:1
Nov 28 09:24:11.049 INFO [stderr]    |
Nov 28 09:24:11.049 INFO [stderr] 23 | fn add_uints(x: i32, y: i32) -> i32 {
Nov 28 09:24:11.049 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 09:24:11.049 INFO [stderr] 
Nov 28 09:24:11.084 INFO [stderr] warning: unused variable: `x`
Nov 28 09:24:11.084 INFO [stderr]   --> src/main.rs:32:9
Nov 28 09:24:11.084 INFO [stderr]    |
Nov 28 09:24:11.084 INFO [stderr] 32 |     let x: i32 = 42;
Nov 28 09:24:11.084 INFO [stderr]    |         ^ help: consider using `_x` instead
Nov 28 09:24:11.085 INFO [stderr]    |
Nov 28 09:24:11.085 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: unused variable: `implicit_x`
Nov 28 09:24:11.085 INFO [stderr]   --> src/main.rs:41:9
Nov 28 09:24:11.085 INFO [stderr]    |
Nov 28 09:24:11.085 INFO [stderr] 41 |     let implicit_x = 1;
Nov 28 09:24:11.085 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_implicit_x` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: unused variable: `implicit_f`
Nov 28 09:24:11.085 INFO [stderr]   --> src/main.rs:42:9
Nov 28 09:24:11.085 INFO [stderr]    |
Nov 28 09:24:11.085 INFO [stderr] 42 |     let implicit_f = 1.3;
Nov 28 09:24:11.085 INFO [stderr]    |         ^^^^^^^^^^ help: consider using `_implicit_f` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: variable `mutable` is assigned to, but never used
Nov 28 09:24:11.085 INFO [stderr]   --> src/main.rs:45:13
Nov 28 09:24:11.085 INFO [stderr]    |
Nov 28 09:24:11.085 INFO [stderr] 45 |     let mut mutable = 1;
Nov 28 09:24:11.085 INFO [stderr]    |             ^^^^^^^
Nov 28 09:24:11.085 INFO [stderr]    |
Nov 28 09:24:11.085 INFO [stderr]    = note: consider using `_mutable` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: value assigned to `mutable` is never read
Nov 28 09:24:11.085 INFO [stderr]   --> src/main.rs:47:5
Nov 28 09:24:11.085 INFO [stderr]    |
Nov 28 09:24:11.085 INFO [stderr] 47 |     mutable += 2;
Nov 28 09:24:11.085 INFO [stderr]    |     ^^^^^^^
Nov 28 09:24:11.085 INFO [stderr]    |
Nov 28 09:24:11.085 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: unused variable: `four_ints`
Nov 28 09:24:11.085 INFO [stderr]   --> src/main.rs:71:9
Nov 28 09:24:11.085 INFO [stderr]    |
Nov 28 09:24:11.085 INFO [stderr] 71 |     let four_ints: [i32; 4] = [1, 2, 3, 4];
Nov 28 09:24:11.085 INFO [stderr]    |         ^^^^^^^^^ help: consider using `_four_ints` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: unused variable: `origin`
Nov 28 09:24:11.085 INFO [stderr]    --> src/main.rs:108:9
Nov 28 09:24:11.085 INFO [stderr]     |
Nov 28 09:24:11.085 INFO [stderr] 108 |     let origin = Point { x: 0, y: 0 };
Nov 28 09:24:11.085 INFO [stderr]     |         ^^^^^^ help: consider using `_origin` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: unused variable: `origin2`
Nov 28 09:24:11.085 INFO [stderr]    --> src/main.rs:113:9
Nov 28 09:24:11.085 INFO [stderr]     |
Nov 28 09:24:11.085 INFO [stderr] 113 |     let origin2 = Point2(0, 0);
Nov 28 09:24:11.085 INFO [stderr]     |         ^^^^^^^ help: consider using `_origin2` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: unused variable: `up`
Nov 28 09:24:11.085 INFO [stderr]    --> src/main.rs:144:9
Nov 28 09:24:11.085 INFO [stderr]     |
Nov 28 09:24:11.085 INFO [stderr] 144 |     let up = Direction::Up;
Nov 28 09:24:11.085 INFO [stderr]     |         ^^ help: consider using `_up` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: unused variable: `two`
Nov 28 09:24:11.085 INFO [stderr]    --> src/main.rs:152:9
Nov 28 09:24:11.085 INFO [stderr]     |
Nov 28 09:24:11.085 INFO [stderr] 152 |     let two: OptionalI32 = OptionalI32::AnI32(2);
Nov 28 09:24:11.085 INFO [stderr]     |         ^^^ help: consider using `_two` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: unused variable: `nothing`
Nov 28 09:24:11.085 INFO [stderr]    --> src/main.rs:153:9
Nov 28 09:24:11.085 INFO [stderr]     |
Nov 28 09:24:11.085 INFO [stderr] 153 |     let nothing = OptionalI32::Nothing;
Nov 28 09:24:11.085 INFO [stderr]     |         ^^^^^^^ help: consider using `_nothing` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: unused variable: `value`
Nov 28 09:24:11.085 INFO [stderr]    --> src/main.rs:266:9
Nov 28 09:24:11.085 INFO [stderr]     |
Nov 28 09:24:11.085 INFO [stderr] 266 |     let value = if true { "good" } else { "bad" };
Nov 28 09:24:11.085 INFO [stderr]     |         ^^^^^ help: consider using `_value` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.085 INFO [stderr] warning: unused variable: `another_ref_var`
Nov 28 09:24:11.085 INFO [stderr]    --> src/main.rs:296:9
Nov 28 09:24:11.085 INFO [stderr]     |
Nov 28 09:24:11.085 INFO [stderr] 296 |     let another_ref_var = &var;
Nov 28 09:24:11.085 INFO [stderr]     |         ^^^^^^^^^^^^^^^ help: consider using `_another_ref_var` instead
Nov 28 09:24:11.085 INFO [stderr] 
Nov 28 09:24:11.114 INFO [stderr] warning: variable does not need to be mutable
Nov 28 09:24:11.114 INFO [stderr]    --> src/main.rs:294:9
Nov 28 09:24:11.114 INFO [stderr]     |
Nov 28 09:24:11.114 INFO [stderr] 294 |     let mut var = 4;
Nov 28 09:24:11.114 INFO [stderr]     |         ----^^^
Nov 28 09:24:11.114 INFO [stderr]     |         |
Nov 28 09:24:11.114 INFO [stderr]     |         help: remove this `mut`
Nov 28 09:24:11.114 INFO [stderr]     |
Nov 28 09:24:11.114 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Nov 28 09:24:11.114 INFO [stderr] 
Nov 28 09:24:11.114 INFO [stderr] warning: function is never used: `add_ints`
Nov 28 09:24:11.114 INFO [stderr]   --> src/main.rs:17:1
Nov 28 09:24:11.114 INFO [stderr]    |
Nov 28 09:24:11.114 INFO [stderr] 17 | fn add_ints(x: i32, y: i32) -> i32 {
Nov 28 09:24:11.114 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 09:24:11.114 INFO [stderr]    |
Nov 28 09:24:11.114 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 28 09:24:11.114 INFO [stderr] 
Nov 28 09:24:11.114 INFO [stderr] warning: function is never used: `add_uints`
Nov 28 09:24:11.114 INFO [stderr]   --> src/main.rs:23:1
Nov 28 09:24:11.114 INFO [stderr]    |
Nov 28 09:24:11.114 INFO [stderr] 23 | fn add_uints(x: i32, y: i32) -> i32 {
Nov 28 09:24:11.114 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 09:24:11.115 INFO [stderr] 
Nov 28 09:24:11.115 INFO [stderr] warning: variant is never constructed: `Left`
Nov 28 09:24:11.115 INFO [stderr]    --> src/main.rs:138:9
Nov 28 09:24:11.115 INFO [stderr]     |
Nov 28 09:24:11.115 INFO [stderr] 138 |         Left,
Nov 28 09:24:11.115 INFO [stderr]     |         ^^^^
Nov 28 09:24:11.115 INFO [stderr] 
Nov 28 09:24:11.115 INFO [stderr] warning: variant is never constructed: `Right`
Nov 28 09:24:11.115 INFO [stderr]    --> src/main.rs:139:9
Nov 28 09:24:11.115 INFO [stderr]     |
Nov 28 09:24:11.115 INFO [stderr] 139 |         Right,
Nov 28 09:24:11.115 INFO [stderr]     |         ^^^^^
Nov 28 09:24:11.115 INFO [stderr] 
Nov 28 09:24:11.115 INFO [stderr] warning: variant is never constructed: `Down`
Nov 28 09:24:11.115 INFO [stderr]    --> src/main.rs:141:9
Nov 28 09:24:11.115 INFO [stderr]     |
Nov 28 09:24:11.115 INFO [stderr] 141 |         Down,
Nov 28 09:24:11.115 INFO [stderr]     |         ^^^^
Nov 28 09:24:11.115 INFO [stderr] 
Nov 28 09:24:11.115 INFO [stderr] warning: method is never used: `new`
Nov 28 09:24:11.115 INFO [stderr]    --> src/main.rs:158:9
Nov 28 09:24:11.115 INFO [stderr]     |
Nov 28 09:24:11.115 INFO [stderr] 158 |         fn new(x: i32) -> OptionalI32 {
Nov 28 09:24:11.115 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 09:24:11.115 INFO [stderr] 
Nov 28 09:24:11.115 INFO [stderr] warning: struct is never constructed: `Foo`
Nov 28 09:24:11.115 INFO [stderr]    --> src/main.rs:211:5
Nov 28 09:24:11.115 INFO [stderr]     |
Nov 28 09:24:11.115 INFO [stderr] 211 |     struct Foo<T> {
Nov 28 09:24:11.115 INFO [stderr]     |     ^^^^^^^^^^^^^
Nov 28 09:24:11.115 INFO [stderr] 
Nov 28 09:24:11.115 INFO [stderr] warning: function is never used: `identity`
Nov 28 09:24:11.115 INFO [stderr]    --> src/main.rs:215:5
Nov 28 09:24:11.115 INFO [stderr]     |
Nov 28 09:24:11.115 INFO [stderr] 215 |     fn identity<T>(x: T) -> T {
Nov 28 09:24:11.115 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 09:24:11.115 INFO [stderr] 
Nov 28 09:24:11.135 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
Nov 28 09:24:11.142 INFO [stderr] su: No module specific data is present
Nov 28 09:24:11.832 INFO running `"docker" "inspect" "2c8341eb39f2e0c4afcdd9a85c73d48202a6d01353d326d140c1df5c50090324"`
Nov 28 09:24:11.986 INFO running `"docker" "rm" "-f" "2c8341eb39f2e0c4afcdd9a85c73d48202a6d01353d326d140c1df5c50090324"`
Nov 28 09:24:12.094 INFO [stdout] 2c8341eb39f2e0c4afcdd9a85c73d48202a6d01353d326d140c1df5c50090324