[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] testing LukeDowell/thebook against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukeDowell%2Fthebook" "/workspace/builds/worker-7/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LukeDowell/thebook on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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-7/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f7d92b0e4e12db8970bb6e6e9e1c4831bfdbf4aeb1015130af4aa3723728e85d [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" "f7d92b0e4e12db8970bb6e6e9e1c4831bfdbf4aeb1015130af4aa3723728e85d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f7d92b0e4e12db8970bb6e6e9e1c4831bfdbf4aeb1015130af4aa3723728e85d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f7d92b0e4e12db8970bb6e6e9e1c4831bfdbf4aeb1015130af4aa3723728e85d", kill_on_drop: false }` [INFO] [stdout] f7d92b0e4e12db8970bb6e6e9e1c4831bfdbf4aeb1015130af4aa3723728e85d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ce9991df857922a0a7a6aec83ba64d47480d1f8694d862c5ecdd32eccd66b0c1 [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" "ce9991df857922a0a7a6aec83ba64d47480d1f8694d862c5ecdd32eccd66b0c1", 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] [stderr] Compiling libc v0.2.82 [INFO] [stderr] Compiling getrandom v0.2.1 [INFO] [stderr] Compiling rand_core v0.6.1 [INFO] [stderr] Compiling rand_chacha v0.3.0 [INFO] [stderr] Compiling rand v0.8.2 [INFO] [stderr] Compiling 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: field is never read: `active` [INFO] [stdout] --> src/structs.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | active: bool, [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: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 4.62s [INFO] running `Command { std: "docker" "inspect" "ce9991df857922a0a7a6aec83ba64d47480d1f8694d862c5ecdd32eccd66b0c1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ce9991df857922a0a7a6aec83ba64d47480d1f8694d862c5ecdd32eccd66b0c1", kill_on_drop: false }` [INFO] [stdout] ce9991df857922a0a7a6aec83ba64d47480d1f8694d862c5ecdd32eccd66b0c1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7ab1fff2b5a4251c27e3e8f74b06a68129db8e3b87bb66b462da50c8745fe1a0 [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" "7ab1fff2b5a4251c27e3e8f74b06a68129db8e3b87bb66b462da50c8745fe1a0", kill_on_drop: false }` [INFO] [stderr] Compiling 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: field is never read: `active` [INFO] [stdout] --> src/structs.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | active: bool, [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: 21 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.58s [INFO] running `Command { std: "docker" "inspect" "7ab1fff2b5a4251c27e3e8f74b06a68129db8e3b87bb66b462da50c8745fe1a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7ab1fff2b5a4251c27e3e8f74b06a68129db8e3b87bb66b462da50c8745fe1a0", kill_on_drop: false }` [INFO] [stdout] 7ab1fff2b5a4251c27e3e8f74b06a68129db8e3b87bb66b462da50c8745fe1a0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] f0f2cc4bf8f27f00262fe65b6588a412d9bea7509d16e60593d22b4a91e02e91 [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" "f0f2cc4bf8f27f00262fe65b6588a412d9bea7509d16e60593d22b4a91e02e91", kill_on_drop: false }` [INFO] [stderr] warning: unused variable: `s` [INFO] [stderr] --> src/ownership.rs:11:13 [INFO] [stderr] | [INFO] [stderr] 11 | let s = "hello"; // s is valid from this point forward [INFO] [stderr] | ^ help: if this is intentional, prefix it with an underscore: `_s` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `len` [INFO] [stderr] --> src/ownership.rs:25:9 [INFO] [stderr] | [INFO] [stderr] 25 | let len = calculate_length(&s1); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_len` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `len2` [INFO] [stderr] --> src/ownership.rs:30:9 [INFO] [stderr] | [INFO] [stderr] 30 | let len2 = legal_calculate_length(&mut s2); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_len2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `r1` [INFO] [stderr] --> src/ownership.rs:33:9 [INFO] [stderr] | [INFO] [stderr] 33 | let r1 = &mut s2; [INFO] [stderr] | ^^ help: if this is intentional, prefix it with an underscore: `_r1` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `word` [INFO] [stderr] --> src/slice.rs:6:9 [INFO] [stderr] | [INFO] [stderr] 6 | let word = first_word(&s); [INFO] [stderr] | ^^^^ help: if this is intentional, prefix it with an underscore: `_word` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `hello` [INFO] [stderr] --> src/slice.rs:12:9 [INFO] [stderr] | [INFO] [stderr] 12 | let hello = &string_slice[0..5]; [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_hello` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `world` [INFO] [stderr] --> src/slice.rs:13:9 [INFO] [stderr] | [INFO] [stderr] 13 | let world = &string_slice[6..11]; [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_world` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `user2` [INFO] [stderr] --> src/structs.rs:23:9 [INFO] [stderr] | [INFO] [stderr] 23 | let user2 = User { [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_user2` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `black` [INFO] [stderr] --> src/structs.rs:30:9 [INFO] [stderr] | [INFO] [stderr] 30 | let black = Color(0, 0, 0); [INFO] [stderr] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_black` [INFO] [stderr] [INFO] [stderr] warning: function is never used: `run` [INFO] [stderr] --> src/ownership.rs:6:8 [INFO] [stderr] | [INFO] [stderr] 6 | pub fn run() { [INFO] [stderr] | ^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `calculate_length` [INFO] [stderr] --> src/ownership.rs:40:4 [INFO] [stderr] | [INFO] [stderr] 40 | fn calculate_length(s: &String) -> usize { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `legal_calculate_length` [INFO] [stderr] --> src/ownership.rs:50:4 [INFO] [stderr] | [INFO] [stderr] 50 | fn legal_calculate_length(s: &mut String) -> usize { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `run` [INFO] [stderr] --> src/guessing_game.rs:5:8 [INFO] [stderr] | [INFO] [stderr] 5 | pub fn run() { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `run` [INFO] [stderr] --> src/slice.rs:2:8 [INFO] [stderr] | [INFO] [stderr] 2 | pub fn run() { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word` [INFO] [stderr] --> src/slice.rs:18:4 [INFO] [stderr] | [INFO] [stderr] 18 | fn first_word(s: &String) -> usize { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `first_word_slice` [INFO] [stderr] --> src/slice.rs:28:4 [INFO] [stderr] | [INFO] [stderr] 28 | fn first_word_slice(s: &String) -> &str { [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `name` [INFO] [stderr] --> src/structs.rs:4:9 [INFO] [stderr] | [INFO] [stderr] 4 | name: String, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never read: `active` [INFO] [stderr] --> src/structs.rs:5:9 [INFO] [stderr] | [INFO] [stderr] 5 | active: bool, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `build_user` [INFO] [stderr] --> src/structs.rs:15:8 [INFO] [stderr] | [INFO] [stderr] 15 | fn build_user(name: String) -> User { [INFO] [stderr] | ^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Validated` [INFO] [stderr] --> src/structs.rs:33:12 [INFO] [stderr] | [INFO] [stderr] 33 | struct Validated; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: function is never used: `area` [INFO] [stderr] --> src/structs.rs:53:4 [INFO] [stderr] | [INFO] [stderr] 53 | fn area(r: Rectangle) -> u32 { [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: 21 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.05s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/thebook-da95aa171312af33) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "f0f2cc4bf8f27f00262fe65b6588a412d9bea7509d16e60593d22b4a91e02e91", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f0f2cc4bf8f27f00262fe65b6588a412d9bea7509d16e60593d22b4a91e02e91", kill_on_drop: false }` [INFO] [stdout] f0f2cc4bf8f27f00262fe65b6588a412d9bea7509d16e60593d22b4a91e02e91