[INFO] cloning repository https://github.com/LukeDowell/thebook [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LukeDowell/thebook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukeDowell%2Fthebook", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukeDowell%2Fthebook'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f731e0266d0729f93c968dcfcd98b5fd3fbe1af9 [INFO] checking LukeDowell/thebook against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukeDowell%2Fthebook" "/workspace/builds/worker-67/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-67/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LukeDowell/thebook on toolchain 39e1293fce4b650061e85dda88aa428f726a8444 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/LukeDowell/thebook [INFO] finished tweaking git repo https://github.com/LukeDowell/thebook [INFO] tweaked toml for git repo https://github.com/LukeDowell/thebook written to /workspace/builds/worker-67/source/Cargo.toml [INFO] crate git repo https://github.com/LukeDowell/thebook already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e8329c25b0dc77152d622c4f8e161de27dd1cfdbffdbb5035e21e529b018287b [INFO] running `Command { std: "docker" "start" "-a" "e8329c25b0dc77152d622c4f8e161de27dd1cfdbffdbb5035e21e529b018287b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e8329c25b0dc77152d622c4f8e161de27dd1cfdbffdbb5035e21e529b018287b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e8329c25b0dc77152d622c4f8e161de27dd1cfdbffdbb5035e21e529b018287b", kill_on_drop: false }` [INFO] [stdout] e8329c25b0dc77152d622c4f8e161de27dd1cfdbffdbb5035e21e529b018287b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9a9bb4a11003f3902b7405c0597fca82b298f042103e79c168c92a806621272f [INFO] running `Command { std: "docker" "start" "-a" "9a9bb4a11003f3902b7405c0597fca82b298f042103e79c168c92a806621272f", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.82 [INFO] [stderr] Compiling getrandom v0.2.1 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking rand_core v0.6.1 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking rand v0.8.2 [INFO] [stderr] Checking thebook v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/ownership.rs:11:13 [INFO] [stdout] | [INFO] [stdout] 11 | let s = "hello"; // s is valid from this point forward [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `len` [INFO] [stdout] --> src/ownership.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | let len = calculate_length(&s1); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_len` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `len2` [INFO] [stdout] --> src/ownership.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let len2 = legal_calculate_length(&mut s2); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_len2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> src/ownership.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let r1 = &mut s2; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `word` [INFO] [stdout] --> src/slice.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let word = first_word(&s); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_word` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hello` [INFO] [stdout] --> src/slice.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let hello = &string_slice[0..5]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `world` [INFO] [stdout] --> src/slice.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let world = &string_slice[6..11]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_world` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `user2` [INFO] [stdout] --> src/structs.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | let user2 = User { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `black` [INFO] [stdout] --> src/structs.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let black = Color(0, 0, 0); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_black` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/ownership.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | 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: `calculate_length` [INFO] [stdout] --> src/ownership.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn calculate_length(s: &String) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `legal_calculate_length` [INFO] [stdout] --> src/ownership.rs:50:4 [INFO] [stdout] | [INFO] [stdout] 50 | fn legal_calculate_length(s: &mut String) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/guessing_game.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/slice.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `first_word` [INFO] [stdout] --> src/slice.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn first_word(s: &String) -> usize { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `first_word_slice` [INFO] [stdout] --> src/slice.rs:28:4 [INFO] [stdout] | [INFO] [stdout] 28 | fn first_word_slice(s: &String) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `name` [INFO] [stdout] --> src/structs.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | name: String, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `build_user` [INFO] [stdout] --> src/structs.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | fn build_user(name: String) -> User { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Validated` [INFO] [stdout] --> src/structs.rs:33:12 [INFO] [stdout] | [INFO] [stdout] 33 | struct Validated; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `area` [INFO] [stdout] --> src/structs.rs:53:4 [INFO] [stdout] | [INFO] [stdout] 53 | fn area(r: Rectangle) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 20 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `s` [INFO] [stdout] --> src/ownership.rs:11:13 [INFO] [stdout] | [INFO] [stdout] 11 | let s = "hello"; // s is valid from this point forward [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `len` [INFO] [stdout] --> src/ownership.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | let len = calculate_length(&s1); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_len` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `len2` [INFO] [stdout] --> src/ownership.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let len2 = legal_calculate_length(&mut s2); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_len2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `r1` [INFO] [stdout] --> src/ownership.rs:33:9 [INFO] [stdout] | [INFO] [stdout] 33 | let r1 = &mut s2; [INFO] [stdout] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `word` [INFO] [stdout] --> src/slice.rs:6:9 [INFO] [stdout] | [INFO] [stdout] 6 | let word = first_word(&s); [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_word` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `hello` [INFO] [stdout] --> src/slice.rs:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let hello = &string_slice[0..5]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `world` [INFO] [stdout] --> src/slice.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | let world = &string_slice[6..11]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_world` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `user2` [INFO] [stdout] --> src/structs.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | let user2 = User { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `black` [INFO] [stdout] --> src/structs.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let black = Color(0, 0, 0); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_black` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/ownership.rs:6:8 [INFO] [stdout] | [INFO] [stdout] 6 | 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: `calculate_length` [INFO] [stdout] --> src/ownership.rs:40:4 [INFO] [stdout] | [INFO] [stdout] 40 | fn calculate_length(s: &String) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `legal_calculate_length` [INFO] [stdout] --> src/ownership.rs:50:4 [INFO] [stdout] | [INFO] [stdout] 50 | fn legal_calculate_length(s: &mut String) -> usize { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/guessing_game.rs:5:8 [INFO] [stdout] | [INFO] [stdout] 5 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `run` [INFO] [stdout] --> src/slice.rs:2:8 [INFO] [stdout] | [INFO] [stdout] 2 | pub fn run() { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `first_word` [INFO] [stdout] --> src/slice.rs:18:4 [INFO] [stdout] | [INFO] [stdout] 18 | fn first_word(s: &String) -> usize { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `first_word_slice` [INFO] [stdout] --> src/slice.rs:28:4 [INFO] [stdout] | [INFO] [stdout] 28 | fn first_word_slice(s: &String) -> &str { [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `name` [INFO] [stdout] --> src/structs.rs:4:9 [INFO] [stdout] | [INFO] [stdout] 4 | name: String, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `build_user` [INFO] [stdout] --> src/structs.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | fn build_user(name: String) -> User { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Validated` [INFO] [stdout] --> src/structs.rs:33:12 [INFO] [stdout] | [INFO] [stdout] 33 | struct Validated; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function is never used: `area` [INFO] [stdout] --> src/structs.rs:53:4 [INFO] [stdout] | [INFO] [stdout] 53 | fn area(r: Rectangle) -> u32 { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 20 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.81s [INFO] running `Command { std: "docker" "inspect" "9a9bb4a11003f3902b7405c0597fca82b298f042103e79c168c92a806621272f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9a9bb4a11003f3902b7405c0597fca82b298f042103e79c168c92a806621272f", kill_on_drop: false }` [INFO] [stdout] 9a9bb4a11003f3902b7405c0597fca82b298f042103e79c168c92a806621272f