[INFO] cloning repository https://github.com/yeqf911/learn_rust [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yeqf911/learn_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeqf911%2Flearn_rust", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeqf911%2Flearn_rust'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5a039acc49828047a409b581a0a8d8792ae3107b [INFO] checking yeqf911/learn_rust against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyeqf911%2Flearn_rust" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/yeqf911/learn_rust on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/yeqf911/learn_rust [INFO] finished tweaking git repo https://github.com/yeqf911/learn_rust [INFO] tweaked toml for git repo https://github.com/yeqf911/learn_rust written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/yeqf911/learn_rust already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 96b276da21266cfc851d96ba54c524012c6386a4188af63803aa8d7eb60c2f57 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "96b276da21266cfc851d96ba54c524012c6386a4188af63803aa8d7eb60c2f57", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "96b276da21266cfc851d96ba54c524012c6386a4188af63803aa8d7eb60c2f57", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "96b276da21266cfc851d96ba54c524012c6386a4188af63803aa8d7eb60c2f57", kill_on_drop: false }` [INFO] [stdout] 96b276da21266cfc851d96ba54c524012c6386a4188af63803aa8d7eb60c2f57 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 95239865932e67e8024a53c6a04507770d0712ea5e06c89e6d1e43cb35a7c2e8 [INFO] running `Command { std: "docker" "start" "-a" "95239865932e67e8024a53c6a04507770d0712ea5e06c89e6d1e43cb35a7c2e8", kill_on_drop: false }` [INFO] [stderr] Checking learn_rust v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `collection::string` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use collection::string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `collection::vector` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use collection::vector; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `collection::string` [INFO] [stdout] --> src/main.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use collection::string; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `collection::vector` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use collection::vector; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/learn_enum.rs:63:9 [INFO] [stdout] | [INFO] [stdout] 62 | aaaa => println!("hello ssd"), [INFO] [stdout] | ---- matches any value [INFO] [stdout] 63 | bbbb => println!("world dsda"), [INFO] [stdout] | ^^^^ unreachable pattern [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/collection/map.rs:81:9 [INFO] [stdout] | [INFO] [stdout] 81 | let key = e.key(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vref` [INFO] [stdout] --> src/collection/map.rs:83:9 [INFO] [stdout] | [INFO] [stdout] 83 | let vref = e.or_insert(0); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_vref` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vs` [INFO] [stdout] --> src/collection/vector.rs:17:13 [INFO] [stdout] | [INFO] [stdout] 17 | let vs = vec![s1, s2, s3]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_vs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `first` [INFO] [stdout] --> src/collection/vector.rs:68:9 [INFO] [stdout] | [INFO] [stdout] 68 | let first = &v[0]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_first` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `count` is assigned to, but never used [INFO] [stdout] --> src/learn_enum.rs:51:9 [INFO] [stdout] | [INFO] [stdout] 51 | let mut count = 1; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_count` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `count` is never read [INFO] [stdout] --> src/learn_enum.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | count += 1; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `aaaa` [INFO] [stdout] --> src/learn_enum.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | aaaa => println!("hello ssd"), [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_aaaa` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `bbbb` [INFO] [stdout] --> src/learn_enum.rs:63:9 [INFO] [stdout] | [INFO] [stdout] 63 | bbbb => println!("world dsda"), [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_bbbb` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/learn_enum.rs:63:9 [INFO] [stdout] | [INFO] [stdout] 62 | aaaa => println!("hello ssd"), [INFO] [stdout] | ---- matches any value [INFO] [stdout] 63 | bbbb => println!("world dsda"), [INFO] [stdout] | ^^^^ unreachable pattern [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `key` [INFO] [stdout] --> src/collection/map.rs:81:9 [INFO] [stdout] | [INFO] [stdout] 81 | let key = e.key(); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_key` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vref` [INFO] [stdout] --> src/collection/map.rs:83:9 [INFO] [stdout] | [INFO] [stdout] 83 | let vref = e.or_insert(0); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_vref` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `vs` [INFO] [stdout] --> src/collection/vector.rs:17:13 [INFO] [stdout] | [INFO] [stdout] 17 | let vs = vec![s1, s2, s3]; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_vs` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `first` [INFO] [stdout] --> src/collection/vector.rs:68:9 [INFO] [stdout] | [INFO] [stdout] 68 | let first = &v[0]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_first` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `count` is assigned to, but never used [INFO] [stdout] --> src/learn_enum.rs:51:9 [INFO] [stdout] | [INFO] [stdout] 51 | let mut count = 1; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: consider using `_count` instead [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `count` is never read [INFO] [stdout] --> src/learn_enum.rs:56:9 [INFO] [stdout] | [INFO] [stdout] 56 | count += 1; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `aaaa` [INFO] [stdout] --> src/learn_enum.rs:62:9 [INFO] [stdout] | [INFO] [stdout] 62 | aaaa => println!("hello ssd"), [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_aaaa` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `bbbb` [INFO] [stdout] --> src/learn_enum.rs:63:9 [INFO] [stdout] | [INFO] [stdout] 63 | bbbb => println!("world dsda"), [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_bbbb` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/collection/string.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/collection/vector.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Int` [INFO] [stdout] --> src/collection/vector.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | Int(i32), [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Float` [INFO] [stdout] --> src/collection/vector.rs:77:5 [INFO] [stdout] | [INFO] [stdout] 77 | Float(f64), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Text` [INFO] [stdout] --> src/collection/vector.rs:78:5 [INFO] [stdout] | [INFO] [stdout] 78 | Text(String), [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Other` [INFO] [stdout] --> src/collection/vector.rs:79:5 [INFO] [stdout] | [INFO] [stdout] 79 | Other(T), [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/learn_enum.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `plus_one` [INFO] [stdout] --> src/learn_enum.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn plus_one(x: Option) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alabama` [INFO] [stdout] --> src/learn_enum.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | Alabama, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alaska` [INFO] [stdout] --> src/learn_enum.rs:77:5 [INFO] [stdout] | [INFO] [stdout] 77 | Alaska, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Coin` [INFO] [stdout] --> src/learn_enum.rs:80:6 [INFO] [stdout] | [INFO] [stdout] 80 | enum Coin { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `value_in_cents` [INFO] [stdout] --> src/learn_enum.rs:87:4 [INFO] [stdout] | [INFO] [stdout] 87 | fn value_in_cents(coin: Coin) -> u8 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/learn_enum.rs:104:5 [INFO] [stdout] | [INFO] [stdout] 104 | V4, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/learn_enum.rs:105:5 [INFO] [stdout] | [INFO] [stdout] 105 | V6, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/learn_enum.rs:110:5 [INFO] [stdout] | [INFO] [stdout] 110 | V4(String), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/learn_enum.rs:111:5 [INFO] [stdout] | [INFO] [stdout] 111 | V6(String), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/learn_enum.rs:116:5 [INFO] [stdout] | [INFO] [stdout] 116 | V4(u8, u8, u8, u8), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/learn_enum.rs:117:5 [INFO] [stdout] | [INFO] [stdout] 117 | V6(String), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/learn_struct.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/learn_struct.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | fn new(name: String, age: usize) -> User { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 31 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/collection/string.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/collection/vector.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Int` [INFO] [stdout] --> src/collection/vector.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | Int(i32), [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Float` [INFO] [stdout] --> src/collection/vector.rs:77:5 [INFO] [stdout] | [INFO] [stdout] 77 | Float(f64), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Text` [INFO] [stdout] --> src/collection/vector.rs:78:5 [INFO] [stdout] | [INFO] [stdout] 78 | Text(String), [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Other` [INFO] [stdout] --> src/collection/vector.rs:79:5 [INFO] [stdout] | [INFO] [stdout] 79 | Other(T), [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/learn_enum.rs:3:8 [INFO] [stdout] | [INFO] [stdout] 3 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `plus_one` [INFO] [stdout] --> src/learn_enum.rs:67:4 [INFO] [stdout] | [INFO] [stdout] 67 | fn plus_one(x: Option) -> Option { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alabama` [INFO] [stdout] --> src/learn_enum.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | Alabama, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Alaska` [INFO] [stdout] --> src/learn_enum.rs:77:5 [INFO] [stdout] | [INFO] [stdout] 77 | Alaska, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum is never used: `Coin` [INFO] [stdout] --> src/learn_enum.rs:80:6 [INFO] [stdout] | [INFO] [stdout] 80 | enum Coin { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `value_in_cents` [INFO] [stdout] --> src/learn_enum.rs:87:4 [INFO] [stdout] | [INFO] [stdout] 87 | fn value_in_cents(coin: Coin) -> u8 { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/learn_enum.rs:104:5 [INFO] [stdout] | [INFO] [stdout] 104 | V4, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/learn_enum.rs:105:5 [INFO] [stdout] | [INFO] [stdout] 105 | V6, [INFO] [stdout] | ^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/learn_enum.rs:110:5 [INFO] [stdout] | [INFO] [stdout] 110 | V4(String), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/learn_enum.rs:111:5 [INFO] [stdout] | [INFO] [stdout] 111 | V6(String), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V4` [INFO] [stdout] --> src/learn_enum.rs:116:5 [INFO] [stdout] | [INFO] [stdout] 116 | V4(u8, u8, u8, u8), [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `V6` [INFO] [stdout] --> src/learn_enum.rs:117:5 [INFO] [stdout] | [INFO] [stdout] 117 | V6(String), [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/learn_struct.rs:1:8 [INFO] [stdout] | [INFO] [stdout] 1 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/learn_struct.rs:45:8 [INFO] [stdout] | [INFO] [stdout] 45 | fn new(name: String, age: usize) -> User { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 31 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.06s [INFO] running `Command { std: "docker" "inspect" "95239865932e67e8024a53c6a04507770d0712ea5e06c89e6d1e43cb35a7c2e8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "95239865932e67e8024a53c6a04507770d0712ea5e06c89e6d1e43cb35a7c2e8", kill_on_drop: false }` [INFO] [stdout] 95239865932e67e8024a53c6a04507770d0712ea5e06c89e6d1e43cb35a7c2e8