[INFO] updating cached repository learn-you-a-rust/enums [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/learn-you-a-rust/enums [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/learn-you-a-rust/enums" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/learn-you-a-rust/enums"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/learn-you-a-rust/enums'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/learn-you-a-rust/enums" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/learn-you-a-rust/enums"` [INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/learn-you-a-rust/enums'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] ee00c89e1a054c0701500d2b59c60278ea956764 [INFO] sha for GitHub repo learn-you-a-rust/enums: ee00c89e1a054c0701500d2b59c60278ea956764 [INFO] validating manifest of learn-you-a-rust/enums on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of learn-you-a-rust/enums on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing learn-you-a-rust/enums [INFO] finished frobbing learn-you-a-rust/enums [INFO] frobbed toml for learn-you-a-rust/enums written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/learn-you-a-rust/enums/Cargo.toml [INFO] started frobbing learn-you-a-rust/enums [INFO] finished frobbing learn-you-a-rust/enums [INFO] frobbed toml for learn-you-a-rust/enums written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/learn-you-a-rust/enums/Cargo.toml [INFO] crate learn-you-a-rust/enums already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking learn-you-a-rust/enums against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-1/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/learn-you-a-rust/enums:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 4d5590274d4fb3ab6e31ffc84ebef3ea50e04377e2f5274b03ced4e140680b4e [INFO] running `"docker" "start" "-a" "4d5590274d4fb3ab6e31ffc84ebef3ea50e04377e2f5274b03ced4e140680b4e"` [INFO] [stderr] Checking enums v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/main.rs:30:13 [INFO] [stderr] | [INFO] [stderr] 27 | Write => { [INFO] [stderr] | ----- matches any value [INFO] [stderr] ... [INFO] [stderr] 30 | ChangeColor => (), [INFO] [stderr] | ^^^^^^^^^^^ unreachable pattern [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/main.rs:31:13 [INFO] [stderr] | [INFO] [stderr] 27 | Write => { [INFO] [stderr] | ----- matches any value [INFO] [stderr] ... [INFO] [stderr] 31 | Quit => (), [INFO] [stderr] | ^^^^ unreachable pattern [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 27 | Write => { [INFO] [stderr] | ----- matches any value [INFO] [stderr] ... [INFO] [stderr] 32 | Move => (), [INFO] [stderr] | ^^^^ unreachable pattern [INFO] [stderr] [INFO] [stderr] warning: unused variable: `home` [INFO] [stderr] --> src/main.rs:71:9 [INFO] [stderr] | [INFO] [stderr] 71 | let home = IpAddrKind::V4(127, 0, 0, 1); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_home` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `loopback` [INFO] [stderr] --> src/main.rs:73:9 [INFO] [stderr] | [INFO] [stderr] 73 | let loopback = IpAddrKind::V6(String::from("::1")); [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_loopback` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_number` [INFO] [stderr] --> src/main.rs:79:9 [INFO] [stderr] | [INFO] [stderr] 79 | let some_number = Some(5); [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_some_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_string` [INFO] [stderr] --> src/main.rs:80:9 [INFO] [stderr] | [INFO] [stderr] 80 | let some_string = Some("a string"); [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_some_string` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `absent_number` [INFO] [stderr] --> src/main.rs:82:9 [INFO] [stderr] | [INFO] [stderr] 82 | let absent_number: Option = None; [INFO] [stderr] | ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_absent_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `six` [INFO] [stderr] --> src/main.rs:87:9 [INFO] [stderr] | [INFO] [stderr] 87 | let six = plus_one(five); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_six` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `none` [INFO] [stderr] --> src/main.rs:88:9 [INFO] [stderr] | [INFO] [stderr] 88 | let none = plus_one(None); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_none` [INFO] [stderr] [INFO] [stderr] warning: variable `count` is assigned to, but never used [INFO] [stderr] --> src/main.rs:102:13 [INFO] [stderr] | [INFO] [stderr] 102 | let mut count = 0; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_count` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `count` is never read [INFO] [stderr] --> src/main.rs:112:9 [INFO] [stderr] | [INFO] [stderr] 112 | count += 1; [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: `Write` [INFO] [stderr] --> src/main.rs:27:13 [INFO] [stderr] | [INFO] [stderr] 27 | Write => { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_Write` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ChangeColor` [INFO] [stderr] --> src/main.rs:30:13 [INFO] [stderr] | [INFO] [stderr] 30 | ChangeColor => (), [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_ChangeColor` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `Quit` [INFO] [stderr] --> src/main.rs:31:13 [INFO] [stderr] | [INFO] [stderr] 31 | Quit => (), [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_Quit` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `Move` [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | Move => (), [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_Move` [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Quit` [INFO] [stderr] --> src/main.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | Quit, // no associated data [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Move` [INFO] [stderr] --> src/main.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | Move { x: i32, y: i32 }, // anonymous struct [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `ChangeColor` [INFO] [stderr] --> src/main.rs:15:5 [INFO] [stderr] | [INFO] [stderr] 15 | ChangeColor(i32, i32, i32), // 3 i32 values [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Penny` [INFO] [stderr] --> src/main.rs:39:5 [INFO] [stderr] | [INFO] [stderr] 39 | Penny, [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Nickel` [INFO] [stderr] --> src/main.rs:40:5 [INFO] [stderr] | [INFO] [stderr] 40 | Nickel, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Dime` [INFO] [stderr] --> src/main.rs:41:5 [INFO] [stderr] | [INFO] [stderr] 41 | Dime, [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable `Write` should have a snake case name [INFO] [stderr] --> src/main.rs:27:13 [INFO] [stderr] | [INFO] [stderr] 27 | Write => { [INFO] [stderr] | ^^^^^ help: convert the identifier to snake case: `write` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `ChangeColor` should have a snake case name [INFO] [stderr] --> src/main.rs:30:13 [INFO] [stderr] | [INFO] [stderr] 30 | ChangeColor => (), [INFO] [stderr] | ^^^^^^^^^^^ help: convert the identifier to snake case: `change_color` [INFO] [stderr] [INFO] [stderr] warning: variable `Quit` should have a snake case name [INFO] [stderr] --> src/main.rs:31:13 [INFO] [stderr] | [INFO] [stderr] 31 | Quit => (), [INFO] [stderr] | ^^^^ help: convert the identifier to snake case: `quit` [INFO] [stderr] [INFO] [stderr] warning: variable `Move` should have a snake case name [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | Move => (), [INFO] [stderr] | ^^^^ help: convert the identifier to snake case: `move` [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/main.rs:30:13 [INFO] [stderr] | [INFO] [stderr] 27 | Write => { [INFO] [stderr] | ----- matches any value [INFO] [stderr] ... [INFO] [stderr] 30 | ChangeColor => (), [INFO] [stderr] | ^^^^^^^^^^^ unreachable pattern [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/main.rs:31:13 [INFO] [stderr] | [INFO] [stderr] 27 | Write => { [INFO] [stderr] | ----- matches any value [INFO] [stderr] ... [INFO] [stderr] 31 | Quit => (), [INFO] [stderr] | ^^^^ unreachable pattern [INFO] [stderr] [INFO] [stderr] warning: unreachable pattern [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 27 | Write => { [INFO] [stderr] | ----- matches any value [INFO] [stderr] ... [INFO] [stderr] 32 | Move => (), [INFO] [stderr] | ^^^^ unreachable pattern [INFO] [stderr] [INFO] [stderr] warning: unused variable: `home` [INFO] [stderr] --> src/main.rs:71:9 [INFO] [stderr] | [INFO] [stderr] 71 | let home = IpAddrKind::V4(127, 0, 0, 1); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_home` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `loopback` [INFO] [stderr] --> src/main.rs:73:9 [INFO] [stderr] | [INFO] [stderr] 73 | let loopback = IpAddrKind::V6(String::from("::1")); [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_loopback` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_number` [INFO] [stderr] --> src/main.rs:79:9 [INFO] [stderr] | [INFO] [stderr] 79 | let some_number = Some(5); [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_some_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `some_string` [INFO] [stderr] --> src/main.rs:80:9 [INFO] [stderr] | [INFO] [stderr] 80 | let some_string = Some("a string"); [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_some_string` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `absent_number` [INFO] [stderr] --> src/main.rs:82:9 [INFO] [stderr] | [INFO] [stderr] 82 | let absent_number: Option = None; [INFO] [stderr] | ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_absent_number` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `six` [INFO] [stderr] --> src/main.rs:87:9 [INFO] [stderr] | [INFO] [stderr] 87 | let six = plus_one(five); [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_six` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `none` [INFO] [stderr] --> src/main.rs:88:9 [INFO] [stderr] | [INFO] [stderr] 88 | let none = plus_one(None); [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_none` [INFO] [stderr] [INFO] [stderr] warning: variable `count` is assigned to, but never used [INFO] [stderr] --> src/main.rs:102:13 [INFO] [stderr] | [INFO] [stderr] 102 | let mut count = 0; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_count` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `count` is never read [INFO] [stderr] --> src/main.rs:112:9 [INFO] [stderr] | [INFO] [stderr] 112 | count += 1; [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: `Write` [INFO] [stderr] --> src/main.rs:27:13 [INFO] [stderr] | [INFO] [stderr] 27 | Write => { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_Write` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `ChangeColor` [INFO] [stderr] --> src/main.rs:30:13 [INFO] [stderr] | [INFO] [stderr] 30 | ChangeColor => (), [INFO] [stderr] | ^^^^^^^^^^^ help: consider prefixing with an underscore: `_ChangeColor` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `Quit` [INFO] [stderr] --> src/main.rs:31:13 [INFO] [stderr] | [INFO] [stderr] 31 | Quit => (), [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_Quit` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `Move` [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | Move => (), [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_Move` [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Quit` [INFO] [stderr] --> src/main.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | Quit, // no associated data [INFO] [stderr] | ^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Move` [INFO] [stderr] --> src/main.rs:13:5 [INFO] [stderr] | [INFO] [stderr] 13 | Move { x: i32, y: i32 }, // anonymous struct [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `ChangeColor` [INFO] [stderr] --> src/main.rs:15:5 [INFO] [stderr] | [INFO] [stderr] 15 | ChangeColor(i32, i32, i32), // 3 i32 values [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Penny` [INFO] [stderr] --> src/main.rs:39:5 [INFO] [stderr] | [INFO] [stderr] 39 | Penny, [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Nickel` [INFO] [stderr] --> src/main.rs:40:5 [INFO] [stderr] | [INFO] [stderr] 40 | Nickel, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variant is never constructed: `Dime` [INFO] [stderr] --> src/main.rs:41:5 [INFO] [stderr] | [INFO] [stderr] 41 | Dime, [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable `Write` should have a snake case name [INFO] [stderr] --> src/main.rs:27:13 [INFO] [stderr] | [INFO] [stderr] 27 | Write => { [INFO] [stderr] | ^^^^^ help: convert the identifier to snake case: `write` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable `ChangeColor` should have a snake case name [INFO] [stderr] --> src/main.rs:30:13 [INFO] [stderr] | [INFO] [stderr] 30 | ChangeColor => (), [INFO] [stderr] | ^^^^^^^^^^^ help: convert the identifier to snake case: `change_color` [INFO] [stderr] [INFO] [stderr] warning: variable `Quit` should have a snake case name [INFO] [stderr] --> src/main.rs:31:13 [INFO] [stderr] | [INFO] [stderr] 31 | Quit => (), [INFO] [stderr] | ^^^^ help: convert the identifier to snake case: `quit` [INFO] [stderr] [INFO] [stderr] warning: variable `Move` should have a snake case name [INFO] [stderr] --> src/main.rs:32:13 [INFO] [stderr] | [INFO] [stderr] 32 | Move => (), [INFO] [stderr] | ^^^^ help: convert the identifier to snake case: `move` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.51s [INFO] running `"docker" "inspect" "4d5590274d4fb3ab6e31ffc84ebef3ea50e04377e2f5274b03ced4e140680b4e"` [INFO] running `"docker" "rm" "-f" "4d5590274d4fb3ab6e31ffc84ebef3ea50e04377e2f5274b03ced4e140680b4e"` [INFO] [stdout] 4d5590274d4fb3ab6e31ffc84ebef3ea50e04377e2f5274b03ced4e140680b4e