[INFO] cloning repository https://github.com/hrodic/rust-book-playground [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hrodic/rust-book-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhrodic%2Frust-book-playground", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhrodic%2Frust-book-playground'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 89477eae6028f5845b1e0afbad59f17442076e7f [INFO] testing hrodic/rust-book-playground against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_getrandom_patch_2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhrodic%2Frust-book-playground" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/hrodic/rust-book-playground [INFO] finished tweaking git repo https://github.com/hrodic/rust-book-playground [INFO] tweaked toml for git repo https://github.com/hrodic/rust-book-playground written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/hrodic/rust-book-playground on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/hrodic/rust-book-playground 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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 579f76494db1c47a9a13ce9764078630ac7031c508ed9db8d910fa3f95eb6908 [INFO] running `Command { std: "docker" "start" "-a" "579f76494db1c47a9a13ce9764078630ac7031c508ed9db8d910fa3f95eb6908", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "579f76494db1c47a9a13ce9764078630ac7031c508ed9db8d910fa3f95eb6908", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "579f76494db1c47a9a13ce9764078630ac7031c508ed9db8d910fa3f95eb6908", kill_on_drop: false }` [INFO] [stdout] 579f76494db1c47a9a13ce9764078630ac7031c508ed9db8d910fa3f95eb6908 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] d59a95162cf831de8d63afe74079004f7dba7d132d98628bcdeaba8dafde3d0e [INFO] running `Command { std: "docker" "start" "-a" "d59a95162cf831de8d63afe74079004f7dba7d132d98628bcdeaba8dafde3d0e", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.112 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] Compiling rust-book v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/collections/main.rs:46:13 [INFO] [stdout] | [INFO] [stdout] 46 | Int(i32), [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 46 - Int(i32), [INFO] [stdout] 46 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/collections/main.rs:47:15 [INFO] [stdout] | [INFO] [stdout] 47 | Float(f64), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 47 - Float(f64), [INFO] [stdout] 47 + Float(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/collections/main.rs:48:14 [INFO] [stdout] | [INFO] [stdout] 48 | Text(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 48 - Text(String), [INFO] [stdout] 48 + Text(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/bin/structs/main.rs:76:18 [INFO] [stdout] | [INFO] [stdout] 76 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/bin/structs/main.rs:78:18 [INFO] [stdout] | [INFO] [stdout] 78 | struct Point(i16, i16, i16); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:154:13 [INFO] [stdout] | [INFO] [stdout] 150 | pub struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 154 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:169:13 [INFO] [stdout] | [INFO] [stdout] 166 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 169 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 170 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `username`, `content`, `reply`, and `retweet` are never read [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:240:13 [INFO] [stdout] | [INFO] [stdout] 239 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 240 | pub username: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 241 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 242 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 243 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:333:27 [INFO] [stdout] | [INFO] [stdout] 333 | fn first_word<'a>(s: &'a str) -> &str { [INFO] [stdout] | ^^ ---- the lifetime gets resolved as `'a` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 333 | fn first_word<'a>(s: &'a str) -> &'a str { [INFO] [stdout] | ++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.95s [INFO] running `Command { std: "docker" "inspect" "d59a95162cf831de8d63afe74079004f7dba7d132d98628bcdeaba8dafde3d0e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d59a95162cf831de8d63afe74079004f7dba7d132d98628bcdeaba8dafde3d0e", kill_on_drop: false }` [INFO] [stdout] d59a95162cf831de8d63afe74079004f7dba7d132d98628bcdeaba8dafde3d0e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] f6658810ba2af3f67497d3f3bafe8ff0362170c088d4042fd0be18890919bdd6 [INFO] running `Command { std: "docker" "start" "-a" "f6658810ba2af3f67497d3f3bafe8ff0362170c088d4042fd0be18890919bdd6", kill_on_drop: false }` [INFO] [stderr] Compiling rust-book v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:154:13 [INFO] [stdout] | [INFO] [stdout] 150 | pub struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 154 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:169:13 [INFO] [stdout] | [INFO] [stdout] 166 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 169 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 170 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `username`, `content`, `reply`, and `retweet` are never read [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:240:13 [INFO] [stdout] | [INFO] [stdout] 239 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 240 | pub username: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 241 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 242 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 243 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:333:27 [INFO] [stdout] | [INFO] [stdout] 333 | fn first_word<'a>(s: &'a str) -> &str { [INFO] [stdout] | ^^ ---- the lifetime gets resolved as `'a` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 333 | fn first_word<'a>(s: &'a str) -> &'a str { [INFO] [stdout] | ++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/collections/main.rs:46:13 [INFO] [stdout] | [INFO] [stdout] 46 | Int(i32), [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 46 - Int(i32), [INFO] [stdout] 46 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/collections/main.rs:47:15 [INFO] [stdout] | [INFO] [stdout] 47 | Float(f64), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 47 - Float(f64), [INFO] [stdout] 47 + Float(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/collections/main.rs:48:14 [INFO] [stdout] | [INFO] [stdout] 48 | Text(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 48 - Text(String), [INFO] [stdout] 48 + Text(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/bin/structs/main.rs:76:18 [INFO] [stdout] | [INFO] [stdout] 76 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/bin/structs/main.rs:78:18 [INFO] [stdout] | [INFO] [stdout] 78 | struct Point(i16, i16, i16); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `content` is never read [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:154:13 [INFO] [stdout] | [INFO] [stdout] 150 | pub struct NewsArticle { [INFO] [stdout] | ----------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 154 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `reply` and `retweet` are never read [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:169:13 [INFO] [stdout] | [INFO] [stdout] 166 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 169 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 170 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `username`, `content`, `reply`, and `retweet` are never read [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:240:13 [INFO] [stdout] | [INFO] [stdout] 239 | pub struct Tweet { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] 240 | pub username: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] 241 | pub content: String, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] 242 | pub reply: bool, [INFO] [stdout] | ^^^^^ [INFO] [stdout] 243 | pub retweet: bool, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/bin/generics_and_traits/main.rs:333:27 [INFO] [stdout] | [INFO] [stdout] 333 | fn first_word<'a>(s: &'a str) -> &str { [INFO] [stdout] | ^^ ---- the lifetime gets resolved as `'a` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 333 | fn first_word<'a>(s: &'a str) -> &'a str { [INFO] [stdout] | ++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/collections/main.rs:46:13 [INFO] [stdout] | [INFO] [stdout] 46 | Int(i32), [INFO] [stdout] | --- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 46 - Int(i32), [INFO] [stdout] 46 + Int(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/collections/main.rs:47:15 [INFO] [stdout] | [INFO] [stdout] 47 | Float(f64), [INFO] [stdout] | ----- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 47 - Float(f64), [INFO] [stdout] 47 + Float(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/bin/collections/main.rs:48:14 [INFO] [stdout] | [INFO] [stdout] 48 | Text(String), [INFO] [stdout] | ---- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 48 - Text(String), [INFO] [stdout] 48 + Text(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/bin/structs/main.rs:76:18 [INFO] [stdout] | [INFO] [stdout] 76 | struct Color(i32, i32, i32); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `0`, `1`, and `2` are never read [INFO] [stdout] --> src/bin/structs/main.rs:78:18 [INFO] [stdout] | [INFO] [stdout] 78 | struct Point(i16, i16, i16); [INFO] [stdout] | ----- ^^^ ^^^ ^^^ [INFO] [stdout] | | [INFO] [stdout] | fields in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing these fields [INFO] [stdout] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 2.21s [INFO] running `Command { std: "docker" "inspect" "f6658810ba2af3f67497d3f3bafe8ff0362170c088d4042fd0be18890919bdd6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f6658810ba2af3f67497d3f3bafe8ff0362170c088d4042fd0be18890919bdd6", kill_on_drop: false }` [INFO] [stdout] f6658810ba2af3f67497d3f3bafe8ff0362170c088d4042fd0be18890919bdd6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] 286a362d0c956889f03bae3d57823d3c6b9fd334b476e1acc5d0b54bf1f78a21 [INFO] running `Command { std: "docker" "start" "-a" "286a362d0c956889f03bae3d57823d3c6b9fd334b476e1acc5d0b54bf1f78a21", kill_on_drop: false }` [INFO] [stderr] warning: field `content` is never read [INFO] [stderr] --> src/bin/generics_and_traits/main.rs:154:13 [INFO] [stderr] | [INFO] [stderr] 150 | pub struct NewsArticle { [INFO] [stderr] | ----------- field in this struct [INFO] [stderr] ... [INFO] [stderr] 154 | pub content: String, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: fields `reply` and `retweet` are never read [INFO] [stderr] --> src/bin/generics_and_traits/main.rs:169:13 [INFO] [stderr] | [INFO] [stderr] 166 | pub struct Tweet { [INFO] [stderr] | ----- fields in this struct [INFO] [stderr] ... [INFO] [stderr] 169 | pub reply: bool, [INFO] [stderr] | ^^^^^ [INFO] [stderr] 170 | pub retweet: bool, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: fields `username`, `content`, `reply`, and `retweet` are never read [INFO] [stderr] --> src/bin/generics_and_traits/main.rs:240:13 [INFO] [stderr] | [INFO] [stderr] 239 | pub struct Tweet { [INFO] [stderr] | ----- fields in this struct [INFO] [stderr] 240 | pub username: String, [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] 241 | pub content: String, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] 242 | pub reply: bool, [INFO] [stderr] | ^^^^^ [INFO] [stderr] 243 | pub retweet: bool, [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stderr] --> src/bin/generics_and_traits/main.rs:333:27 [INFO] [stderr] | [INFO] [stderr] 333 | fn first_word<'a>(s: &'a str) -> &str { [INFO] [stderr] | ^^ ---- the lifetime gets resolved as `'a` [INFO] [stderr] | | [INFO] [stderr] | this lifetime flows to the output [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stderr] help: one option is to consistently use `'a` [INFO] [stderr] | [INFO] [stderr] 333 | fn first_word<'a>(s: &'a str) -> &'a str { [INFO] [stderr] | ++ [INFO] [stderr] [INFO] [stderr] warning: fields `0`, `1`, and `2` are never read [INFO] [stderr] --> src/bin/structs/main.rs:76:18 [INFO] [stderr] | [INFO] [stderr] 76 | struct Color(i32, i32, i32); [INFO] [stderr] | ----- ^^^ ^^^ ^^^ [INFO] [stderr] | | [INFO] [stderr] | fields in this struct [INFO] [stderr] | [INFO] [stderr] = help: consider removing these fields [INFO] [stderr] = note: `Color` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: fields `0`, `1`, and `2` are never read [INFO] [stderr] --> src/bin/structs/main.rs:78:18 [INFO] [stderr] | [INFO] [stderr] 78 | struct Point(i16, i16, i16); [INFO] [stderr] | ----- ^^^ ^^^ ^^^ [INFO] [stderr] | | [INFO] [stderr] | fields in this struct [INFO] [stderr] | [INFO] [stderr] = help: consider removing these fields [INFO] [stderr] = note: `Point` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] [INFO] [stderr] warning: `rust-book` (bin "generics_and_traits" test) generated 4 warnings (run `cargo fix --bin "generics_and_traits" --tests` to apply 1 suggestion) [INFO] [stderr] warning: `rust-book` (bin "structs" test) generated 2 warnings [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/bin/collections/main.rs:46:13 [INFO] [stderr] | [INFO] [stderr] 46 | Int(i32), [INFO] [stderr] | --- ^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this variant [INFO] [stderr] | [INFO] [stderr] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stderr] | [INFO] [stderr] 46 - Int(i32), [INFO] [stderr] 46 + Int(()), [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/bin/collections/main.rs:47:15 [INFO] [stderr] | [INFO] [stderr] 47 | Float(f64), [INFO] [stderr] | ----- ^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this variant [INFO] [stderr] | [INFO] [stderr] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stderr] | [INFO] [stderr] 47 - Float(f64), [INFO] [stderr] 47 + Float(()), [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/bin/collections/main.rs:48:14 [INFO] [stderr] | [INFO] [stderr] 48 | Text(String), [INFO] [stderr] | ---- ^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | field in this variant [INFO] [stderr] | [INFO] [stderr] = note: `SpreadsheetCell` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stderr] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stderr] | [INFO] [stderr] 48 - Text(String), [INFO] [stderr] 48 + Text(()), [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: `rust-book` (bin "collections" test) generated 3 warnings [INFO] [stderr] warning: `rust-book` (bin "structs") generated 2 warnings (2 duplicates) [INFO] [stderr] warning: `rust-book` (bin "generics_and_traits") generated 4 warnings (4 duplicates) [INFO] [stderr] warning: `rust-book` (bin "collections") generated 3 warnings (3 duplicates) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stdout] [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/rust_book-ad95785e99f71ed5) [INFO] [stdout] running 0 tests [INFO] [stderr] Running unittests src/bin/branches/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/branches-28a7bdbc04f73575) [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] [stdout] [INFO] [stderr] Running unittests src/bin/collections/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/collections-e3c814b3ce31f5d1) [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] [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] [stderr] Running unittests src/bin/enums/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/enums-388e3dcd924ad578) [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] [stderr] Running unittests src/bin/error_handling/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/error_handling-1b4275d641c2575f) [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] [stderr] Running unittests src/bin/functions/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/functions-86fd0d05aa147153) [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] [stderr] Running unittests src/bin/generics_and_traits/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/generics_and_traits-ca17e79c546ef1c1) [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] [stderr] Running unittests src/bin/guessing_game/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/guessing_game-f93adf5fb31c4c8c) [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] [stderr] Running unittests src/bin/hello_world/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/hello_world-885c29fd66dbaa46) [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] [stderr] Running unittests src/bin/ownership/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/ownership-56189c200f57769c) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stderr] Running unittests src/bin/references/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/references-c38c6b22e3b86468) [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] [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] [stderr] Running unittests src/bin/restaurant/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/restaurant-16aa69cdee095527) [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] [stderr] Running unittests src/bin/slices/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/slices-71c4be970ee9a824) [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] [stderr] Running unittests src/bin/structs/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/structs-a9813c4c3284b456) [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] [stderr] Running unittests src/bin/variables/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/variables-507ede68695b2814) [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] [stderr] Running unittests src/bin/writing_tests/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/writing_tests-961df1b99797f0f4) [INFO] [stdout] [INFO] [stdout] running 6 tests [INFO] [stdout] test tests::it_adds_two ... ok [INFO] [stdout] test tests::using_result_in_tests ... ok [INFO] [stdout] test tests::greeting_contains_name ... ok [INFO] [stdout] test tests::larger_can_hold_smaller ... ok [INFO] [stdout] test tests::it_works ... ok [INFO] [stdout] test tests::it_panics - should panic ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s [INFO] [stdout] [INFO] [stderr] Running tests/integration_test.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/integration_test-9a3b4b63aa6a74d8) [INFO] [stdout] [INFO] [stdout] running 1 test [INFO] [stdout] test it_adds_two ... ok [INFO] [stderr] Doc-tests rust_book [INFO] [stdout] [INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s [INFO] [stdout] [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" "286a362d0c956889f03bae3d57823d3c6b9fd334b476e1acc5d0b54bf1f78a21", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "286a362d0c956889f03bae3d57823d3c6b9fd334b476e1acc5d0b54bf1f78a21", kill_on_drop: false }` [INFO] [stdout] 286a362d0c956889f03bae3d57823d3c6b9fd334b476e1acc5d0b54bf1f78a21