[INFO] cloning repository https://github.com/UnHumbleBen/serde-tutorial [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/UnHumbleBen/serde-tutorial" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnHumbleBen%2Fserde-tutorial", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnHumbleBen%2Fserde-tutorial'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cf3ef9af0f449ed6c74e67ce5a867643c7d38fab [INFO] checking UnHumbleBen/serde-tutorial/cf3ef9af0f449ed6c74e67ce5a867643c7d38fab against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FUnHumbleBen%2Fserde-tutorial" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/UnHumbleBen/serde-tutorial on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/UnHumbleBen/serde-tutorial [INFO] finished tweaking git repo https://github.com/UnHumbleBen/serde-tutorial [INFO] tweaked toml for git repo https://github.com/UnHumbleBen/serde-tutorial written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/UnHumbleBen/serde-tutorial 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded serde_repr v0.1.5 [INFO] [stderr] Downloaded proc-macro2 v1.0.1 [INFO] [stderr] Downloaded syn v1.0.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fcbba14e672e0564f40a825d37655c0ac743febbc318a0c365e9d2d546878878 [INFO] running `Command { std: "docker" "start" "-a" "fcbba14e672e0564f40a825d37655c0ac743febbc318a0c365e9d2d546878878", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fcbba14e672e0564f40a825d37655c0ac743febbc318a0c365e9d2d546878878", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fcbba14e672e0564f40a825d37655c0ac743febbc318a0c365e9d2d546878878", kill_on_drop: false }` [INFO] [stdout] fcbba14e672e0564f40a825d37655c0ac743febbc318a0c365e9d2d546878878 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f88cdaf958b99be54e53901882ee84623da8a53bc3bb400a6647392beab701c7 [INFO] running `Command { std: "docker" "start" "-a" "f88cdaf958b99be54e53901882ee84623da8a53bc3bb400a6647392beab701c7", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.1 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.3 [INFO] [stderr] Compiling serde v1.0.99 [INFO] [stderr] Compiling ryu v1.0.0 [INFO] [stderr] Checking itoa v0.4.4 [INFO] [stderr] Checking phantom-data v0.1.0 (/opt/rustwide/workdir/phantom-data) [INFO] [stdout] warning: struct `Iter` is never constructed [INFO] [stdout] --> phantom-data/src/main.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 38 | struct Iter<'a, T: 'a> { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Vec` is never constructed [INFO] [stdout] --> phantom-data/src/main.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | struct Vec { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Iter` is never constructed [INFO] [stdout] --> phantom-data/src/main.rs:38:8 [INFO] [stdout] | [INFO] [stdout] 38 | struct Iter<'a, T: 'a> { [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Vec` is never constructed [INFO] [stdout] --> phantom-data/src/main.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | struct Vec { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling serde_derive v1.0.99 [INFO] [stderr] Compiling serde_repr v0.1.5 [INFO] [stderr] Checking serde_json v1.0.40 [INFO] [stderr] Checking implement-deserialize-for-a-custom-map-type v0.1.0 (/opt/rustwide/workdir/implement-deserialize-for-a-custom-map-type) [INFO] [stderr] Checking attributes v0.1.0 (/opt/rustwide/workdir/attributes) [INFO] [stderr] Checking skip-serializing-field v0.1.0 (/opt/rustwide/workdir/skip-serializing-field) [INFO] [stderr] Checking discarding-data v0.1.0 (/opt/rustwide/workdir/discarding-data) [INFO] [stderr] Checking deriving-de-serialize-for-type-in-a-different-crate v0.1.0 (/opt/rustwide/workdir/deriving-de-serialize-for-type-in-a-different-crate) [INFO] [stderr] Checking default-value-for-a-field v0.1.0 (/opt/rustwide/workdir/default-value-for-a-field) [INFO] [stderr] Checking processing-an-array-of-values-without-buffering-into-a-vec v0.1.0 (/opt/rustwide/workdir/processing-an-array-of-values-without-buffering-into-a-vec) [INFO] [stderr] Checking serialize-fields-as-camelcase v0.1.0 (/opt/rustwide/workdir/serialize-fields-as-camelcase) [INFO] [stderr] Checking using-derive v0.1.0 (/opt/rustwide/workdir/using-derive) [INFO] [stderr] Checking manually-implementing-deserialize-for-a-struct v0.1.0 (/opt/rustwide/workdir/manually-implementing-deserialize-for-a-struct) [INFO] [stderr] Checking custom-serialization v0.1.0 (/opt/rustwide/workdir/custom-serialization) [INFO] [stderr] Checking the-visitor-trait v0.1.0 (/opt/rustwide/workdir/the-visitor-trait) [INFO] [stderr] Checking struct-flattening v0.1.0 (/opt/rustwide/workdir/struct-flattening) [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> manually-implementing-deserialize-for-a-struct/src/main.rs:28:10 [INFO] [stdout] | [INFO] [stdout] 28 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `secs` and `nanos` are never read [INFO] [stdout] --> manually-implementing-deserialize-for-a-struct/src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 9 | struct Duration { [INFO] [stdout] | -------- fields in this struct [INFO] [stdout] 10 | secs: u64, [INFO] [stdout] | ^^^^ [INFO] [stdout] 11 | nanos: u32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking enum-representations v0.1.0 (/opt/rustwide/workdir/enum-representations) [INFO] [stderr] Checking handwritten-generic-type-bound v0.1.0 (/opt/rustwide/workdir/handwritten-generic-type-bounds) [INFO] [stdout] warning: field `hash` is never read [INFO] [stdout] --> skip-serializing-field/src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct Resource { [INFO] [stdout] | -------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 9 | hash: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking serialize-enum-as-number v0.1.0 (/opt/rustwide/workdir/serialize-enum-as-number) [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `resource`, `timeout`, and `priority` are never read [INFO] [stdout] --> default-value-for-a-field/src/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 9 | struct Request { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 13 | resource: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 18 | timeout: Timeout, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 23 | priority: Priority, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Request` 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: field `0` is never read [INFO] [stdout] --> default-value-for-a-field/src/main.rs:33:16 [INFO] [stdout] | [INFO] [stdout] 33 | struct Timeout(u32); [INFO] [stdout] | ------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `Timeout` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary trailing semicolon [INFO] [stdout] --> manually-implementing-deserialize-for-a-struct/src/main.rs:28:10 [INFO] [stdout] | [INFO] [stdout] 28 | }; [INFO] [stdout] | ^ help: remove this semicolon [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(redundant_semicolons)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `hash` is never read [INFO] [stdout] --> skip-serializing-field/src/main.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 6 | struct Resource { [INFO] [stdout] | -------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 9 | hash: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> processing-an-array-of-values-without-buffering-into-a-vec/src/main.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 21 | struct Outer { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 22 | /// The id of the processed array. [INFO] [stdout] 23 | id: String, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `secs` and `nanos` are never read [INFO] [stdout] --> manually-implementing-deserialize-for-a-struct/src/main.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 9 | struct Duration { [INFO] [stdout] | -------- fields in this struct [INFO] [stdout] 10 | secs: u64, [INFO] [stdout] | ^^^^ [INFO] [stdout] 11 | nanos: u32, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `s` and `ptr` are never read [INFO] [stdout] --> handwritten-generic-type-bounds/src/main.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 21 | struct Outer<'a, S, T: 'a + ?Sized> { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 29 | s: S, [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 37 | ptr: Ptr<'a, T>, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Outer` 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: variant `Ref` is never constructed [INFO] [stdout] --> handwritten-generic-type-bounds/src/main.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 59 | enum Ptr<'a, T: 'a + ?Sized> { [INFO] [stdout] | --- variant in this enum [INFO] [stdout] 60 | Ref(&'a T), [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Ptr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `s` and `ptr` are never read [INFO] [stdout] --> handwritten-generic-type-bounds/src/main.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 21 | struct Outer<'a, S, T: 'a + ?Sized> { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 29 | s: S, [INFO] [stdout] | ^ [INFO] [stdout] ... [INFO] [stdout] 37 | ptr: Ptr<'a, T>, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Outer` 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: variant `Ref` is never constructed [INFO] [stdout] --> handwritten-generic-type-bounds/src/main.rs:60:5 [INFO] [stdout] | [INFO] [stdout] 59 | enum Ptr<'a, T: 'a + ?Sized> { [INFO] [stdout] | --- variant in this enum [INFO] [stdout] 60 | Ref(&'a T), [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Ptr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `resource`, `timeout`, and `priority` are never read [INFO] [stdout] --> default-value-for-a-field/src/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 9 | struct Request { [INFO] [stdout] | ------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 13 | resource: String, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 18 | timeout: Timeout, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 23 | priority: Priority, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Request` 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: field `0` is never read [INFO] [stdout] --> default-value-for-a-field/src/main.rs:33:16 [INFO] [stdout] | [INFO] [stdout] 33 | struct Timeout(u32); [INFO] [stdout] | ------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `Timeout` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `id` is never read [INFO] [stdout] --> processing-an-array-of-values-without-buffering-into-a-vec/src/main.rs:23:5 [INFO] [stdout] | [INFO] [stdout] 21 | struct Outer { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 22 | /// The id of the processed array. [INFO] [stdout] 23 | id: String, [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.18s [INFO] running `Command { std: "docker" "inspect" "f88cdaf958b99be54e53901882ee84623da8a53bc3bb400a6647392beab701c7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f88cdaf958b99be54e53901882ee84623da8a53bc3bb400a6647392beab701c7", kill_on_drop: false }` [INFO] [stdout] f88cdaf958b99be54e53901882ee84623da8a53bc3bb400a6647392beab701c7