[INFO] cloning repository https://github.com/withoutboats/guessing_game [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/withoutboats/guessing_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwithoutboats%2Fguessing_game", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwithoutboats%2Fguessing_game'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ba0cad9d5e9e3b2caedfa6ac6d4826c518280862 [INFO] checking withoutboats/guessing_game against beta for pr-78714 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwithoutboats%2Fguessing_game" "/workspace/builds/worker-2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/withoutboats/guessing_game on toolchain beta [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/withoutboats/guessing_game [INFO] finished tweaking git repo https://github.com/withoutboats/guessing_game [INFO] tweaked toml for git repo https://github.com/withoutboats/guessing_game written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/withoutboats/guessing_game already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0228263d1f7eed270b2283e841488751eba23c7c5bdd82456abb3e6e309e47b2 [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" "0228263d1f7eed270b2283e841488751eba23c7c5bdd82456abb3e6e309e47b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0228263d1f7eed270b2283e841488751eba23c7c5bdd82456abb3e6e309e47b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0228263d1f7eed270b2283e841488751eba23c7c5bdd82456abb3e6e309e47b2", kill_on_drop: false }` [INFO] [stdout] 0228263d1f7eed270b2283e841488751eba23c7c5bdd82456abb3e6e309e47b2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] f732942cfda49dcae181a230d145c8c88ec482bc0c3238c2e72fef1d906d8aa8 [INFO] running `Command { std: "docker" "start" "-a" "f732942cfda49dcae181a230d145c8c88ec482bc0c3238c2e72fef1d906d8aa8", kill_on_drop: false }` [INFO] [stderr] Checking guessing_game v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `secret` [INFO] [stdout] --> src/secret_number/mod.rs:15:12 [INFO] [stdout] | [INFO] [stdout] 15 | fn new(secret: u16) -> Secret { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_secret` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `guess` [INFO] [stdout] --> src/secret_number/mod.rs:19:25 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn guess(&self, guess: &str) -> Result { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_guess` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/secret_number/mod.rs:36:19 [INFO] [stdout] | [INFO] [stdout] 36 | fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Secret` [INFO] [stdout] --> src/secret_number/mod.rs:7:12 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct Secret { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `random` [INFO] [stdout] --> src/secret_number/mod.rs:11:12 [INFO] [stdout] | [INFO] [stdout] 11 | pub fn random() -> Secret { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/secret_number/mod.rs:15:8 [INFO] [stdout] | [INFO] [stdout] 15 | fn new(secret: u16) -> Secret { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `guess` [INFO] [stdout] --> src/secret_number/mod.rs:19:12 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn guess(&self, guess: &str) -> Result { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `secret` [INFO] [stdout] --> src/secret_number/mod.rs:23:8 [INFO] [stdout] | [INFO] [stdout] 23 | fn secret(&self) -> u16 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `TooHigh` [INFO] [stdout] --> src/secret_number/mod.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | TooHigh(u16), [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `TooLow` [INFO] [stdout] --> src/secret_number/mod.rs:31:5 [INFO] [stdout] | [INFO] [stdout] 31 | TooLow(u16), [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `NotANumber` [INFO] [stdout] --> src/secret_number/mod.rs:32:5 [INFO] [stdout] | [INFO] [stdout] 32 | NotANumber, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `secret` [INFO] [stdout] --> src/secret_number/mod.rs:15:12 [INFO] [stdout] | [INFO] [stdout] 15 | fn new(secret: u16) -> Secret { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_secret` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `guess` [INFO] [stdout] --> src/secret_number/mod.rs:19:25 [INFO] [stdout] | [INFO] [stdout] 19 | pub fn guess(&self, guess: &str) -> Result { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_guess` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `f` [INFO] [stdout] --> src/secret_number/mod.rs:36:19 [INFO] [stdout] | [INFO] [stdout] 36 | fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_f` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/secret_number/tests.rs:18:9 [INFO] [stdout] | [INFO] [stdout] 18 | let mut secret = Secret::new(0); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/secret_number/tests.rs:24:9 [INFO] [stdout] | [INFO] [stdout] 24 | let mut secret = Secret::new(0); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/secret_number/tests.rs:30:9 [INFO] [stdout] | [INFO] [stdout] 30 | let mut secret = Secret::new(1); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/secret_number/tests.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | let mut secret = Secret::new(0); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/secret_number/tests.rs:42:9 [INFO] [stdout] | [INFO] [stdout] 42 | let mut secret = Secret::new(1); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/secret_number/tests.rs:49:9 [INFO] [stdout] | [INFO] [stdout] 49 | let mut secret = Secret::new(0); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/secret_number/tests.rs:57:9 [INFO] [stdout] | [INFO] [stdout] 57 | let mut secret = Secret::new(0); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.26s [INFO] running `Command { std: "docker" "inspect" "f732942cfda49dcae181a230d145c8c88ec482bc0c3238c2e72fef1d906d8aa8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f732942cfda49dcae181a230d145c8c88ec482bc0c3238c2e72fef1d906d8aa8", kill_on_drop: false }` [INFO] [stdout] f732942cfda49dcae181a230d145c8c88ec482bc0c3238c2e72fef1d906d8aa8