[INFO] cloning repository https://github.com/FeistyKit/simplecards [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FeistyKit/simplecards" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFeistyKit%2Fsimplecards", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFeistyKit%2Fsimplecards'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ac17bb9aeb947b89832c3f716c4316f789983b44 [INFO] checking FeistyKit/simplecards against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFeistyKit%2Fsimplecards" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/FeistyKit/simplecards on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/FeistyKit/simplecards [INFO] finished tweaking git repo https://github.com/FeistyKit/simplecards [INFO] tweaked toml for git repo https://github.com/FeistyKit/simplecards written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/FeistyKit/simplecards already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded signal-hook-mio v0.2.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b1a5df0fefa77f3c7faafe1e1b63f4550081d1abb372af92891fa988471de568 [INFO] running `Command { std: "docker" "start" "-a" "b1a5df0fefa77f3c7faafe1e1b63f4550081d1abb372af92891fa988471de568", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b1a5df0fefa77f3c7faafe1e1b63f4550081d1abb372af92891fa988471de568", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b1a5df0fefa77f3c7faafe1e1b63f4550081d1abb372af92891fa988471de568", kill_on_drop: false }` [INFO] [stdout] b1a5df0fefa77f3c7faafe1e1b63f4550081d1abb372af92891fa988471de568 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1af9b6133e2e22ee76930974437561e6bf5cf64cfc77d69b684e25a884a1b70a [INFO] running `Command { std: "docker" "start" "-a" "1af9b6133e2e22ee76930974437561e6bf5cf64cfc77d69b684e25a884a1b70a", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.104 [INFO] [stderr] Compiling proc-macro2 v1.0.30 [INFO] [stderr] Compiling syn v1.0.80 [INFO] [stderr] Compiling signal-hook v0.3.10 [INFO] [stderr] Compiling serde_derive v1.0.130 [INFO] [stderr] Checking smallvec v1.7.0 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking linked-hash-map v0.5.4 [INFO] [stderr] Checking lock_api v0.4.5 [INFO] [stderr] Compiling serde_json v1.0.68 [INFO] [stderr] Checking itoa v0.4.8 [INFO] [stderr] Checking unicode-segmentation v1.8.0 [INFO] [stderr] Checking cassowary v0.3.0 [INFO] [stderr] Checking unicode-width v0.1.9 [INFO] [stderr] Checking dtoa v0.4.8 [INFO] [stderr] Checking yaml-rust v0.4.5 [INFO] [stderr] Compiling indexmap v1.7.0 [INFO] [stderr] Compiling quote v1.0.10 [INFO] [stderr] Checking signal-hook-registry v1.4.0 [INFO] [stderr] Checking mio v0.7.14 [INFO] [stderr] Checking parking_lot_core v0.8.5 [INFO] [stderr] Checking dirs-sys v0.3.6 [INFO] [stderr] Checking directories v4.0.1 [INFO] [stderr] Checking parking_lot v0.11.2 [INFO] [stderr] Checking signal-hook-mio v0.2.1 [INFO] [stderr] Checking crossterm v0.20.0 [INFO] [stderr] Checking tui v0.16.0 [INFO] [stderr] Checking serde_yaml v0.8.21 [INFO] [stderr] Checking simplecards v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 21 | / loop { [INFO] [stdout] 22 | | term.draw(termdraw)?; [INFO] [stdout] 23 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 24 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable expression [INFO] [stdout] --> src/main.rs:24:5 [INFO] [stdout] | [INFO] [stdout] 21 | / loop { [INFO] [stdout] 22 | | term.draw(termdraw)?; [INFO] [stdout] 23 | | } [INFO] [stdout] | |_____- any code following this expression is unreachable [INFO] [stdout] 24 | Ok(()) [INFO] [stdout] | ^^^^^^ unreachable expression [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_event` is never used [INFO] [stdout] --> src/main.rs:52:4 [INFO] [stdout] | [INFO] [stdout] 52 | fn get_event() -> AnyResult> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `get_event` is never used [INFO] [stdout] --> src/main.rs:52:4 [INFO] [stdout] | [INFO] [stdout] 52 | fn get_event() -> AnyResult> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `TabState` is never constructed [INFO] [stdout] --> src/main.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | struct TabState<'a> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `data_dir` is never used [INFO] [stdout] --> src/storage.rs:10:4 [INFO] [stdout] | [INFO] [stdout] 10 | fn data_dir() -> AnyResult { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `TabState` is never constructed [INFO] [stdout] --> src/main.rs:59:8 [INFO] [stdout] | [INFO] [stdout] 59 | struct TabState<'a> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `config_dir` is never used [INFO] [stdout] --> src/storage.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn config_dir() -> AnyResult { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `data_dir` is never used [INFO] [stdout] --> src/storage.rs:10:4 [INFO] [stdout] | [INFO] [stdout] 10 | fn data_dir() -> AnyResult { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `construct_set` is never used [INFO] [stdout] --> src/storage.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn construct_set( [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `config_dir` is never used [INFO] [stdout] --> src/storage.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn config_dir() -> AnyResult { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `make_item_list` is never used [INFO] [stdout] --> src/storage.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn make_item_list(source_files: Vec) -> AnyResult> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `construct_set` is never used [INFO] [stdout] --> src/storage.rs:28:8 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn construct_set( [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `make_config` is never used [INFO] [stdout] --> src/storage.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn make_config(config_file: Option, config_default: bool) -> VocabRules { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `make_item_list` is never used [INFO] [stdout] --> src/storage.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn make_item_list(source_files: Vec) -> AnyResult> { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `make_config` is never used [INFO] [stdout] --> src/storage.rs:60:4 [INFO] [stdout] | [INFO] [stdout] 60 | fn make_config(config_file: Option, config_default: bool) -> VocabRules { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `try_make_config` is never used [INFO] [stdout] --> src/storage.rs:68:4 [INFO] [stdout] | [INFO] [stdout] 68 | fn try_make_config(config_file: Option) -> AnyResult { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `try_make_config` is never used [INFO] [stdout] --> src/storage.rs:68:4 [INFO] [stdout] | [INFO] [stdout] 68 | fn try_make_config(config_file: Option) -> AnyResult { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `save_set` is never used [INFO] [stdout] --> src/storage.rs:88:8 [INFO] [stdout] | [INFO] [stdout] 88 | pub fn save_set( [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `save_set` is never used [INFO] [stdout] --> src/storage.rs:88:8 [INFO] [stdout] | [INFO] [stdout] 88 | pub fn save_set( [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `save_config` is never used [INFO] [stdout] --> src/storage.rs:100:4 [INFO] [stdout] | [INFO] [stdout] 100 | fn save_config(config: &VocabRules) -> AnyResult<()> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `save_config` is never used [INFO] [stdout] --> src/storage.rs:100:4 [INFO] [stdout] | [INFO] [stdout] 100 | fn save_config(config: &VocabRules) -> AnyResult<()> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `save_data` is never used [INFO] [stdout] --> src/storage.rs:114:4 [INFO] [stdout] | [INFO] [stdout] 114 | fn save_data(data: std::collections::HashMap<&str, Vec<&VocabEntry>>) -> AnyResult<()> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `save_data` is never used [INFO] [stdout] --> src/storage.rs:114:4 [INFO] [stdout] | [INFO] [stdout] 114 | fn save_data(data: std::collections::HashMap<&str, Vec<&VocabEntry>>) -> AnyResult<()> { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `path` is never read [INFO] [stdout] --> src/vocab.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct VocabEntry { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 14 | path: String, // the path that it was loaded from [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `VocabEntry` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `path` is never read [INFO] [stdout] --> src/vocab.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct VocabEntry { [INFO] [stdout] | ---------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 14 | path: String, // the path that it was loaded from [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `VocabEntry` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `increment` and `user_new` are never used [INFO] [stdout] --> src/vocab.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 17 | impl VocabEntry { [INFO] [stdout] | --------------- associated items in this implementation [INFO] [stdout] 18 | // Will be called when the user tries a vocab card [INFO] [stdout] 19 | pub fn increment(&mut self, correct: bool, instant_change: bool) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 33 | pub fn user_new(key: String, val: String, path: String) -> VocabEntry { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `VocabSet` is never constructed [INFO] [stdout] --> src/vocab.rs:57:12 [INFO] [stdout] | [INFO] [stdout] 57 | pub struct VocabSet { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `VocabSet` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `increment` and `user_new` are never used [INFO] [stdout] --> src/vocab.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 17 | impl VocabEntry { [INFO] [stdout] | --------------- associated items in this implementation [INFO] [stdout] 18 | // Will be called when the user tries a vocab card [INFO] [stdout] 19 | pub fn increment(&mut self, correct: bool, instant_change: bool) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 33 | pub fn user_new(key: String, val: String, path: String) -> VocabEntry { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `from_unsorted` and `to_saveable` are never used [INFO] [stdout] --> src/vocab.rs:92:12 [INFO] [stdout] | [INFO] [stdout] 90 | impl VocabSet { [INFO] [stdout] | ------------- associated items in this implementation [INFO] [stdout] 91 | // construct the set from unparsed items [INFO] [stdout] 92 | pub fn from_unsorted(items: Vec, rules: VocabRules) -> VocabSet { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 120 | pub fn to_saveable<'a>( [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `VocabSet` is never constructed [INFO] [stdout] --> src/vocab.rs:57:12 [INFO] [stdout] | [INFO] [stdout] 57 | pub struct VocabSet { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `VocabSet` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `from_unsorted` and `to_saveable` are never used [INFO] [stdout] --> src/vocab.rs:92:12 [INFO] [stdout] | [INFO] [stdout] 90 | impl VocabSet { [INFO] [stdout] | ------------- associated items in this implementation [INFO] [stdout] 91 | // construct the set from unparsed items [INFO] [stdout] 92 | pub fn from_unsorted(items: Vec, rules: VocabRules) -> VocabSet { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 120 | pub fn to_saveable<'a>( [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/storage.rs:125:9 [INFO] [stdout] | [INFO] [stdout] 125 | f.write(string.as_bytes()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 125 | let _ = f.write(string.as_bytes()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/storage.rs:125:9 [INFO] [stdout] | [INFO] [stdout] 125 | f.write(string.as_bytes()); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 125 | let _ = f.write(string.as_bytes()); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 17 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 17 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.71s [INFO] running `Command { std: "docker" "inspect" "1af9b6133e2e22ee76930974437561e6bf5cf64cfc77d69b684e25a884a1b70a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1af9b6133e2e22ee76930974437561e6bf5cf64cfc77d69b684e25a884a1b70a", kill_on_drop: false }` [INFO] [stdout] 1af9b6133e2e22ee76930974437561e6bf5cf64cfc77d69b684e25a884a1b70a