[INFO] updating cached repository aochagavia/rust-syntax-cheat-sheet [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/aochagavia/rust-syntax-cheat-sheet [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/aochagavia/rust-syntax-cheat-sheet" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/aochagavia/rust-syntax-cheat-sheet"` [INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/aochagavia/rust-syntax-cheat-sheet'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/aochagavia/rust-syntax-cheat-sheet" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/aochagavia/rust-syntax-cheat-sheet"` [INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/aochagavia/rust-syntax-cheat-sheet'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 61962ddbc2996b1dcbed8f58150e420058f1ddf9 [INFO] sha for GitHub repo aochagavia/rust-syntax-cheat-sheet: 61962ddbc2996b1dcbed8f58150e420058f1ddf9 [INFO] validating manifest of aochagavia/rust-syntax-cheat-sheet on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of aochagavia/rust-syntax-cheat-sheet on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing aochagavia/rust-syntax-cheat-sheet [INFO] finished frobbing aochagavia/rust-syntax-cheat-sheet [INFO] frobbed toml for aochagavia/rust-syntax-cheat-sheet written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/aochagavia/rust-syntax-cheat-sheet/Cargo.toml [INFO] started frobbing aochagavia/rust-syntax-cheat-sheet [INFO] finished frobbing aochagavia/rust-syntax-cheat-sheet [INFO] frobbed toml for aochagavia/rust-syntax-cheat-sheet written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/aochagavia/rust-syntax-cheat-sheet/Cargo.toml [INFO] crate aochagavia/rust-syntax-cheat-sheet already has a lockfile, it will not be regenerated [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking aochagavia/rust-syntax-cheat-sheet against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199 [INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-3/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/aochagavia/rust-syntax-cheat-sheet:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] f4995b1fbc32ee560e37348c387c3bbd67d734c6f3a88058d79b6d4ebb03da70 [INFO] running `"docker" "start" "-a" "f4995b1fbc32ee560e37348c387c3bbd67d734c6f3a88058d79b6d4ebb03da70"` [INFO] [stderr] Checking syntax v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:32:9 [INFO] [stderr] | [INFO] [stderr] 32 | let x: i32 = 42; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `implicit_x` [INFO] [stderr] --> src/main.rs:41:9 [INFO] [stderr] | [INFO] [stderr] 41 | let implicit_x = 1; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_implicit_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `implicit_f` [INFO] [stderr] --> src/main.rs:42:9 [INFO] [stderr] | [INFO] [stderr] 42 | let implicit_f = 1.3; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_implicit_f` [INFO] [stderr] [INFO] [stderr] warning: variable `mutable` is assigned to, but never used [INFO] [stderr] --> src/main.rs:45:13 [INFO] [stderr] | [INFO] [stderr] 45 | let mut mutable = 1; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_mutable` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `mutable` is never read [INFO] [stderr] --> src/main.rs:47:5 [INFO] [stderr] | [INFO] [stderr] 47 | mutable += 2; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_assignments)] on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `four_ints` [INFO] [stderr] --> src/main.rs:71:9 [INFO] [stderr] | [INFO] [stderr] 71 | let four_ints: [i32; 4] = [1, 2, 3, 4]; [INFO] [stderr] | ^^^^^^^^^ help: consider prefixing with an underscore: `_four_ints` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `origin` [INFO] [stderr] --> src/main.rs:108:9 [INFO] [stderr] | [INFO] [stderr] 108 | let origin = Point { x: 0, y: 0 }; [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_origin` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `origin2` [INFO] [stderr] --> src/main.rs:113:9 [INFO] [stderr] | [INFO] [stderr] 113 | let origin2 = Point2(0, 0); [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_origin2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `up` [INFO] [stderr] --> src/main.rs:144:9 [INFO] [stderr] | [INFO] [stderr] 144 | let up = Direction::Up; [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_up` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `two` [INFO] [stderr] --> src/main.rs:152:9 [INFO] [stderr] | [INFO] [stderr] 152 | let two: OptionalI32 = OptionalI32::AnI32(2); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_two` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `nothing` [INFO] [stderr] --> src/main.rs:153:9 [INFO] [stderr] | [INFO] [stderr] 153 | let nothing = OptionalI32::Nothing; [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_nothing` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/main.rs:266:9 [INFO] [stderr] | [INFO] [stderr] 266 | let value = if true { "good" } else { "bad" }; [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_value` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `another_ref_var` [INFO] [stderr] --> src/main.rs:296:9 [INFO] [stderr] | [INFO] [stderr] 296 | let another_ref_var = &var; [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_another_ref_var` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:294:9 [INFO] [stderr] | [INFO] [stderr] 294 | let mut var = 4; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `add_ints` [INFO] [stderr] --> src/main.rs:17:1 [INFO] [stderr] | [INFO] [stderr] 17 | fn add_ints(x: i32, y: i32) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `add_uints` [INFO] [stderr] --> src/main.rs:23:1 [INFO] [stderr] | [INFO] [stderr] 23 | fn add_uints(x: i32, y: i32) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Left` [INFO] [stderr] --> src/main.rs:138:9 [INFO] [stderr] | [INFO] [stderr] 138 | Left, [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Right` [INFO] [stderr] --> src/main.rs:139:9 [INFO] [stderr] | [INFO] [stderr] 139 | Right, [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Down` [INFO] [stderr] --> src/main.rs:141:9 [INFO] [stderr] | [INFO] [stderr] 141 | Down, [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `new` [INFO] [stderr] --> src/main.rs:158:9 [INFO] [stderr] | [INFO] [stderr] 158 | fn new(x: i32) -> OptionalI32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Foo` [INFO] [stderr] --> src/main.rs:211:5 [INFO] [stderr] | [INFO] [stderr] 211 | struct Foo { [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `identity` [INFO] [stderr] --> src/main.rs:215:5 [INFO] [stderr] | [INFO] [stderr] 215 | fn identity(x: T) -> T { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `x` [INFO] [stderr] --> src/main.rs:32:9 [INFO] [stderr] | [INFO] [stderr] 32 | let x: i32 = 42; [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_x` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `implicit_x` [INFO] [stderr] --> src/main.rs:41:9 [INFO] [stderr] | [INFO] [stderr] 41 | let implicit_x = 1; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_implicit_x` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `implicit_f` [INFO] [stderr] --> src/main.rs:42:9 [INFO] [stderr] | [INFO] [stderr] 42 | let implicit_f = 1.3; [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_implicit_f` [INFO] [stderr] [INFO] [stderr] warning: variable `mutable` is assigned to, but never used [INFO] [stderr] --> src/main.rs:45:13 [INFO] [stderr] | [INFO] [stderr] 45 | let mut mutable = 1; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_mutable` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `mutable` is never read [INFO] [stderr] --> src/main.rs:47:5 [INFO] [stderr] | [INFO] [stderr] 47 | mutable += 2; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_assignments)] on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `four_ints` [INFO] [stderr] --> src/main.rs:71:9 [INFO] [stderr] | [INFO] [stderr] 71 | let four_ints: [i32; 4] = [1, 2, 3, 4]; [INFO] [stderr] | ^^^^^^^^^ help: consider prefixing with an underscore: `_four_ints` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `origin` [INFO] [stderr] --> src/main.rs:108:9 [INFO] [stderr] | [INFO] [stderr] 108 | let origin = Point { x: 0, y: 0 }; [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_origin` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `origin2` [INFO] [stderr] --> src/main.rs:113:9 [INFO] [stderr] | [INFO] [stderr] 113 | let origin2 = Point2(0, 0); [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_origin2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `up` [INFO] [stderr] --> src/main.rs:144:9 [INFO] [stderr] | [INFO] [stderr] 144 | let up = Direction::Up; [INFO] [stderr] | ^^ help: consider prefixing with an underscore: `_up` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `two` [INFO] [stderr] --> src/main.rs:152:9 [INFO] [stderr] | [INFO] [stderr] 152 | let two: OptionalI32 = OptionalI32::AnI32(2); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_two` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `nothing` [INFO] [stderr] --> src/main.rs:153:9 [INFO] [stderr] | [INFO] [stderr] 153 | let nothing = OptionalI32::Nothing; [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_nothing` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/main.rs:266:9 [INFO] [stderr] | [INFO] [stderr] 266 | let value = if true { "good" } else { "bad" }; [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_value` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `another_ref_var` [INFO] [stderr] --> src/main.rs:296:9 [INFO] [stderr] | [INFO] [stderr] 296 | let another_ref_var = &var; [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_another_ref_var` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/main.rs:294:9 [INFO] [stderr] | [INFO] [stderr] 294 | let mut var = 4; [INFO] [stderr] | ----^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_mut)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `add_ints` [INFO] [stderr] --> src/main.rs:17:1 [INFO] [stderr] | [INFO] [stderr] 17 | fn add_ints(x: i32, y: i32) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(dead_code)] on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `add_uints` [INFO] [stderr] --> src/main.rs:23:1 [INFO] [stderr] | [INFO] [stderr] 23 | fn add_uints(x: i32, y: i32) -> i32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.48s [INFO] running `"docker" "inspect" "f4995b1fbc32ee560e37348c387c3bbd67d734c6f3a88058d79b6d4ebb03da70"` [INFO] running `"docker" "rm" "-f" "f4995b1fbc32ee560e37348c387c3bbd67d734c6f3a88058d79b6d4ebb03da70"` [INFO] [stdout] f4995b1fbc32ee560e37348c387c3bbd67d734c6f3a88058d79b6d4ebb03da70