[INFO] fetching crate diaglint 0.1.8...
[INFO] testing diaglint-0.1.8 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate diaglint 0.1.8 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate diaglint 0.1.8
[INFO] finished tweaking crates.io crate diaglint 0.1.8
[INFO] tweaked toml for crates.io crate diaglint 0.1.8 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate diaglint 0.1.8 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate diaglint 0.1.8 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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c22b697bc161253300c995773ea54a6bc4e4f0e2e672f1d7cc9cb359ccce037
[INFO] running `Command { std: "docker" "start" "-a" "4c22b697bc161253300c995773ea54a6bc4e4f0e2e672f1d7cc9cb359ccce037", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c22b697bc161253300c995773ea54a6bc4e4f0e2e672f1d7cc9cb359ccce037", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c22b697bc161253300c995773ea54a6bc4e4f0e2e672f1d7cc9cb359ccce037", kill_on_drop: false }`
[INFO] [stdout] 4c22b697bc161253300c995773ea54a6bc4e4f0e2e672f1d7cc9cb359ccce037
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1a5fea15b9607ac2efaad5a2bb75fd6e9b10b55212d3afe153f2f117ed39522
[INFO] running `Command { std: "docker" "start" "-a" "f1a5fea15b9607ac2efaad5a2bb75fd6e9b10b55212d3afe153f2f117ed39522", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.77
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.68
[INFO] [stderr]    Compiling minimal-lexical v0.1.3
[INFO] [stderr]    Compiling bytecount v0.6.2
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling annotate-snippets v0.8.0
[INFO] [stderr]    Compiling nom v7.0.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling nom_locate v4.0.0
[INFO] [stderr]    Compiling diaglint v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `rendered` is never read
[INFO] [stdout]   --> src/json.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Diagnostic {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     rendered: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Diagnostic` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArtifactNotification` is never constructed
[INFO] [stdout]   --> src/json.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct ArtifactNotification {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/json.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct DiagnosticSpan {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 25 |     file_name: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 26 |     line_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 27 |     line_end: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 28 |     column_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 29 |     column_end: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     is_primary: bool,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 31 |     label: Option<String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 32 |     suggested_replacement: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 33 |     expansion: Option<Box<DiagnosticSpanMacroExpansion>>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DiagnosticSpan` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `span` and `macro_decl_name` are never read
[INFO] [stdout]   --> src/json.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct DiagnosticSpanMacroExpansion {
[INFO] [stdout]    |            ---------------------------- fields in this struct
[INFO] [stdout] 38 |     /// span where macro was applied to generate this code
[INFO] [stdout] 39 |     span: DiagnosticSpan,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     macro_decl_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DiagnosticSpanMacroExpansion` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `explanation` are never read
[INFO] [stdout]   --> src/json.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct DiagnosticCode {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 47 |     /// The code itself.
[INFO] [stdout] 48 |     code: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 49 |     /// An explanation for the code.
[INFO] [stdout] 50 |     explanation: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DiagnosticCode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parse.rs:58:31
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn parse_message(message: &str) -> IResult<Span, Vec<Sentence>> {
[INFO] [stdout]    |                               ^^^^             ^^^^      ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                               |                |
[INFO] [stdout]    |                               |                the same lifetime is hidden here
[INFO] [stdout]    |                               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn parse_message(message: &str) -> IResult<Span<'_>, Vec<Sentence<'_>>> {
[INFO] [stdout]    |                                                    ++++              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.67s
[INFO] running `Command { std: "docker" "inspect" "f1a5fea15b9607ac2efaad5a2bb75fd6e9b10b55212d3afe153f2f117ed39522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1a5fea15b9607ac2efaad5a2bb75fd6e9b10b55212d3afe153f2f117ed39522", kill_on_drop: false }`
[INFO] [stdout] f1a5fea15b9607ac2efaad5a2bb75fd6e9b10b55212d3afe153f2f117ed39522
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b16f3b3e273c1a84577b81e512c85a9ad85a3966ece566ed23452c6ebcefa860
[INFO] running `Command { std: "docker" "start" "-a" "b16f3b3e273c1a84577b81e512c85a9ad85a3966ece566ed23452c6ebcefa860", kill_on_drop: false }`
[INFO] [stdout] warning: field `rendered` is never read
[INFO] [stdout]   --> src/json.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Diagnostic {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     rendered: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Diagnostic` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArtifactNotification` is never constructed
[INFO] [stdout]   --> src/json.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct ArtifactNotification {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/json.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct DiagnosticSpan {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 25 |     file_name: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 26 |     line_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 27 |     line_end: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 28 |     column_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 29 |     column_end: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     is_primary: bool,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 31 |     label: Option<String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 32 |     suggested_replacement: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 33 |     expansion: Option<Box<DiagnosticSpanMacroExpansion>>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DiagnosticSpan` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `span` and `macro_decl_name` are never read
[INFO] [stdout]   --> src/json.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct DiagnosticSpanMacroExpansion {
[INFO] [stdout]    |            ---------------------------- fields in this struct
[INFO] [stdout] 38 |     /// span where macro was applied to generate this code
[INFO] [stdout] 39 |     span: DiagnosticSpan,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     macro_decl_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DiagnosticSpanMacroExpansion` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `explanation` are never read
[INFO] [stdout]   --> src/json.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct DiagnosticCode {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 47 |     /// The code itself.
[INFO] [stdout] 48 |     code: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 49 |     /// An explanation for the code.
[INFO] [stdout] 50 |     explanation: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DiagnosticCode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parse.rs:58:31
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn parse_message(message: &str) -> IResult<Span, Vec<Sentence>> {
[INFO] [stdout]    |                               ^^^^             ^^^^      ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                               |                |
[INFO] [stdout]    |                               |                the same lifetime is hidden here
[INFO] [stdout]    |                               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn parse_message(message: &str) -> IResult<Span<'_>, Vec<Sentence<'_>>> {
[INFO] [stdout]    |                                                    ++++              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling diaglint v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `rendered` is never read
[INFO] [stdout]   --> src/json.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Diagnostic {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 14 |     rendered: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Diagnostic` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArtifactNotification` is never constructed
[INFO] [stdout]   --> src/json.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct ArtifactNotification {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/json.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct DiagnosticSpan {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 25 |     file_name: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 26 |     line_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 27 |     line_end: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 28 |     column_start: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 29 |     column_end: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 30 |     is_primary: bool,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 31 |     label: Option<String>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 32 |     suggested_replacement: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 33 |     expansion: Option<Box<DiagnosticSpanMacroExpansion>>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DiagnosticSpan` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `span` and `macro_decl_name` are never read
[INFO] [stdout]   --> src/json.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct DiagnosticSpanMacroExpansion {
[INFO] [stdout]    |            ---------------------------- fields in this struct
[INFO] [stdout] 38 |     /// span where macro was applied to generate this code
[INFO] [stdout] 39 |     span: DiagnosticSpan,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     macro_decl_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DiagnosticSpanMacroExpansion` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `code` and `explanation` are never read
[INFO] [stdout]   --> src/json.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub struct DiagnosticCode {
[INFO] [stdout]    |            -------------- fields in this struct
[INFO] [stdout] 47 |     /// The code itself.
[INFO] [stdout] 48 |     code: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 49 |     /// An explanation for the code.
[INFO] [stdout] 50 |     explanation: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DiagnosticCode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parse.rs:58:31
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn parse_message(message: &str) -> IResult<Span, Vec<Sentence>> {
[INFO] [stdout]    |                               ^^^^             ^^^^      ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                               |                |
[INFO] [stdout]    |                               |                the same lifetime is hidden here
[INFO] [stdout]    |                               the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub fn parse_message(message: &str) -> IResult<Span<'_>, Vec<Sentence<'_>>> {
[INFO] [stdout]    |                                                    ++++              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `Command { std: "docker" "inspect" "b16f3b3e273c1a84577b81e512c85a9ad85a3966ece566ed23452c6ebcefa860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b16f3b3e273c1a84577b81e512c85a9ad85a3966ece566ed23452c6ebcefa860", kill_on_drop: false }`
[INFO] [stdout] b16f3b3e273c1a84577b81e512c85a9ad85a3966ece566ed23452c6ebcefa860
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 84075bd90d87eb355b1922b24ed08bb5e21e41952a40a4b28723e5f571f7f6e8
[INFO] running `Command { std: "docker" "start" "-a" "84075bd90d87eb355b1922b24ed08bb5e21e41952a40a4b28723e5f571f7f6e8", kill_on_drop: false }`
[INFO] [stderr] warning: field `rendered` is never read
[INFO] [stderr]   --> src/json.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr]  8 | pub struct Diagnostic {
[INFO] [stderr]    |            ---------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 14 |     rendered: Option<String>,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Diagnostic` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ArtifactNotification` is never constructed
[INFO] [stderr]   --> src/json.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub struct ArtifactNotification {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: multiple fields are never read
[INFO] [stderr]   --> src/json.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub struct DiagnosticSpan {
[INFO] [stderr]    |            -------------- fields in this struct
[INFO] [stderr] 25 |     file_name: String,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 26 |     line_start: usize,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 27 |     line_end: usize,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 28 |     column_start: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 29 |     column_end: usize,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 30 |     is_primary: bool,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 31 |     label: Option<String>,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 32 |     suggested_replacement: Option<String>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 33 |     expansion: Option<Box<DiagnosticSpanMacroExpansion>>,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `DiagnosticSpan` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `span` and `macro_decl_name` are never read
[INFO] [stderr]   --> src/json.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub struct DiagnosticSpanMacroExpansion {
[INFO] [stderr]    |            ---------------------------- fields in this struct
[INFO] [stderr] 38 |     /// span where macro was applied to generate this code
[INFO] [stderr] 39 |     span: DiagnosticSpan,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 42 |     macro_decl_name: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `DiagnosticSpanMacroExpansion` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `code` and `explanation` are never read
[INFO] [stderr]   --> src/json.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub struct DiagnosticCode {
[INFO] [stderr]    |            -------------- fields in this struct
[INFO] [stderr] 47 |     /// The code itself.
[INFO] [stderr] 48 |     code: String,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 49 |     /// An explanation for the code.
[INFO] [stderr] 50 |     explanation: Option<String>,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `DiagnosticCode` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/parse.rs:58:31
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn parse_message(message: &str) -> IResult<Span, Vec<Sentence>> {
[INFO] [stderr]    |                               ^^^^             ^^^^      ^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                               |                |
[INFO] [stderr]    |                               |                the same lifetime is hidden here
[INFO] [stderr]    |                               the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 58 | pub fn parse_message(message: &str) -> IResult<Span<'_>, Vec<Sentence<'_>>> {
[INFO] [stderr]    |                                                    ++++              ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `diaglint` (lib) generated 6 warnings (run `cargo fix --lib -p diaglint` to apply 1 suggestion)
[INFO] [stderr] warning: `diaglint` (lib test) generated 6 warnings (6 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/diaglint-37749b243e33fcd9)
[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/main.rs (/opt/rustwide/target/debug/deps/diaglint-d896430bdbbb2faf)
[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]    Doc-tests diaglint
[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" "84075bd90d87eb355b1922b24ed08bb5e21e41952a40a4b28723e5f571f7f6e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84075bd90d87eb355b1922b24ed08bb5e21e41952a40a4b28723e5f571f7f6e8", kill_on_drop: false }`
[INFO] [stdout] 84075bd90d87eb355b1922b24ed08bb5e21e41952a40a4b28723e5f571f7f6e8
