[INFO] cloning repository https://github.com/luojia65/sysevr-diff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luojia65/sysevr-diff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluojia65%2Fsysevr-diff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluojia65%2Fsysevr-diff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6c222fb345a3f925df223d19e47187556caf6d72
[INFO] testing luojia65/sysevr-diff against beta-2026-04-21 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluojia65%2Fsysevr-diff" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/luojia65/sysevr-diff
[INFO] finished tweaking git repo https://github.com/luojia65/sysevr-diff
[INFO] tweaked toml for git repo https://github.com/luojia65/sysevr-diff written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luojia65/sysevr-diff on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luojia65/sysevr-diff 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" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d848abcf3cab5bcd89ecded5c1b40f0ce4eb0c2912fe76e789e2d418380f8eaf
[INFO] running `Command { std: "docker" "start" "-a" "d848abcf3cab5bcd89ecded5c1b40f0ce4eb0c2912fe76e789e2d418380f8eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d848abcf3cab5bcd89ecded5c1b40f0ce4eb0c2912fe76e789e2d418380f8eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d848abcf3cab5bcd89ecded5c1b40f0ce4eb0c2912fe76e789e2d418380f8eaf", kill_on_drop: false }`
[INFO] [stdout] d848abcf3cab5bcd89ecded5c1b40f0ce4eb0c2912fe76e789e2d418380f8eaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd8dcc9e88fedcc2415d64e4db9203771e8fdd197bc7215ee0ff19c0ac3e5dbc
[INFO] running `Command { std: "docker" "start" "-a" "fd8dcc9e88fedcc2415d64e4db9203771e8fdd197bc7215ee0ff19c0ac3e5dbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.1
[INFO] [stderr]    Compiling sysevr-diff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cv.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |     let mut ret = Vec::new();
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cv.rs:233:9
[INFO] [stdout]     |
[INFO] [stdout] 233 |     let mut ret = Vec::new();
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/cv.rs:232:26
[INFO] [stdout]     |
[INFO] [stdout] 232 | pub fn gen_modify_if<'a>(ctx: &'a ModifyIf) -> Vec<Cv<'a>> {
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nxt_line`
[INFO] [stdout]   --> src/format.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let nxt_line = &input[line_start..next_line(input, line_start)];
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nxt_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `line_end` is never read
[INFO] [stdout]   --> src/format.rs:78:28
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let mut line_end = line_start;
[INFO] [stdout]    |                            ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 82 |             line_end = next_line(input, line_start);
[INFO] [stdout]    |             --------------------------------------- `line_end` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `skip` is never read
[INFO] [stdout]    --> src/format.rs:274:24
[INFO] [stdout]     |
[INFO] [stdout] 274 |         let mut skip = 0;
[INFO] [stdout]     |                        ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 284 |             skip = idx_start_add.unwrap();
[INFO] [stdout]     |             ----------------------------- `skip` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:57:21
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 for i in format::modify_value_assign(a) {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_lines` is never used
[INFO] [stdout]   --> src/format.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn add_lines(input: &str) -> impl Iterator<Item = &str> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `idx` is never read
[INFO] [stdout]   --> src/format.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct AddIfReturn<'a> {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub idx: usize,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AddIfReturn` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `line_number` is never used
[INFO] [stdout]   --> src/format.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl AddIfReturn<'_> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 29 |     pub fn line_number(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mark` and `block` are never read
[INFO] [stdout]    --> src/format.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 129 | pub struct ModifyWhileFor<'a> {
[INFO] [stdout]     |            -------------- fields in this struct
[INFO] [stdout] 130 |     pub mark: &'a str, // "for" or "while"
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 |     pub block: &'a str,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ModifyWhileFor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cond_sub`, `cond_add`, and `block` are never read
[INFO] [stdout]    --> src/format.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 225 | pub struct ModifyIf {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 226 |     pub cond_sub: String,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 227 |     pub cond_add: String,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 228 |     pub block: String,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ModifyIf` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sub_left`, `sub_right`, `add_left`, and `add_right` are never read
[INFO] [stdout]    --> src/format.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 345 | pub struct ModifyValueAssign<'a> {
[INFO] [stdout]     |            ----------------- fields in this struct
[INFO] [stdout] 346 |     pub sub_left: &'a str,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 347 |     pub sub_right: &'a str,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout] 348 |     pub add_left: &'a str,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 349 |     pub add_right: &'a str,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ModifyValueAssign` has derived impls for the traits `Debug` and `Clone`, 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/cv.rs:89:20
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn get_syms(input: &str) -> GetSyms {
[INFO] [stdout]    |                    ^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[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] 89 | fn get_syms(input: &str) -> GetSyms<'_> {
[INFO] [stdout]    |                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/format.rs:136:32
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub fn modify_while_for(input: &str) -> Vec<ModifyWhileFor> {
[INFO] [stdout]     |                                ^^^^         ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                |
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub fn modify_while_for(input: &str) -> Vec<ModifyWhileFor<'_>> {
[INFO] [stdout]     |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/format.rs:356:35
[INFO] [stdout]     |
[INFO] [stdout] 356 | pub fn modify_value_assign(input: &str) -> Vec<ModifyValueAssign> {
[INFO] [stdout]     |                                   ^^^^         ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                   |
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 356 | pub fn modify_value_assign(input: &str) -> Vec<ModifyValueAssign<'_>> {
[INFO] [stdout]     |                                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.39s
[INFO] running `Command { std: "docker" "inspect" "fd8dcc9e88fedcc2415d64e4db9203771e8fdd197bc7215ee0ff19c0ac3e5dbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd8dcc9e88fedcc2415d64e4db9203771e8fdd197bc7215ee0ff19c0ac3e5dbc", kill_on_drop: false }`
[INFO] [stdout] fd8dcc9e88fedcc2415d64e4db9203771e8fdd197bc7215ee0ff19c0ac3e5dbc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1885a982d12e182b8da30fa171e48970a91774119f6f428c99af4e7e566a04d
[INFO] running `Command { std: "docker" "start" "-a" "c1885a982d12e182b8da30fa171e48970a91774119f6f428c99af4e7e566a04d", kill_on_drop: false }`
[INFO] [stderr]    Compiling sysevr-diff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cv.rs:167:9
[INFO] [stdout]     |
[INFO] [stdout] 167 |     let mut ret = Vec::new();
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/cv.rs:233:9
[INFO] [stdout]     |
[INFO] [stdout] 233 |     let mut ret = Vec::new();
[INFO] [stdout]     |         ----^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ctx`
[INFO] [stdout]    --> src/cv.rs:232:26
[INFO] [stdout]     |
[INFO] [stdout] 232 | pub fn gen_modify_if<'a>(ctx: &'a ModifyIf) -> Vec<Cv<'a>> {
[INFO] [stdout]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `nxt_line`
[INFO] [stdout]   --> src/format.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let nxt_line = &input[line_start..next_line(input, line_start)];
[INFO] [stdout]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nxt_line`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `line_end` is never read
[INFO] [stdout]   --> src/format.rs:78:28
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let mut line_end = line_start;
[INFO] [stdout]    |                            ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 82 |             line_end = next_line(input, line_start);
[INFO] [stdout]    |             --------------------------------------- `line_end` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `skip` is never read
[INFO] [stdout]    --> src/format.rs:274:24
[INFO] [stdout]     |
[INFO] [stdout] 274 |         let mut skip = 0;
[INFO] [stdout]     |                        ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 284 |             skip = idx_start_add.unwrap();
[INFO] [stdout]     |             ----------------------------- `skip` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:57:21
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 for i in format::modify_value_assign(a) {
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_lines` is never used
[INFO] [stdout]   --> src/format.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn add_lines(input: &str) -> impl Iterator<Item = &str> {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `idx` is never read
[INFO] [stdout]   --> src/format.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct AddIfReturn<'a> {
[INFO] [stdout]    |            ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub idx: usize,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AddIfReturn` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `line_number` is never used
[INFO] [stdout]   --> src/format.rs:29:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl AddIfReturn<'_> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 29 |     pub fn line_number(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `mark` and `block` are never read
[INFO] [stdout]    --> src/format.rs:130:9
[INFO] [stdout]     |
[INFO] [stdout] 129 | pub struct ModifyWhileFor<'a> {
[INFO] [stdout]     |            -------------- fields in this struct
[INFO] [stdout] 130 |     pub mark: &'a str, // "for" or "while"
[INFO] [stdout]     |         ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 133 |     pub block: &'a str,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ModifyWhileFor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `cond_sub`, `cond_add`, and `block` are never read
[INFO] [stdout]    --> src/format.rs:226:9
[INFO] [stdout]     |
[INFO] [stdout] 225 | pub struct ModifyIf {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 226 |     pub cond_sub: String,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 227 |     pub cond_add: String,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 228 |     pub block: String,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ModifyIf` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `sub_left`, `sub_right`, `add_left`, and `add_right` are never read
[INFO] [stdout]    --> src/format.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 345 | pub struct ModifyValueAssign<'a> {
[INFO] [stdout]     |            ----------------- fields in this struct
[INFO] [stdout] 346 |     pub sub_left: &'a str,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 347 |     pub sub_right: &'a str,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout] 348 |     pub add_left: &'a str,
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 349 |     pub add_right: &'a str,
[INFO] [stdout]     |         ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ModifyValueAssign` has derived impls for the traits `Debug` and `Clone`, 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/cv.rs:89:20
[INFO] [stdout]    |
[INFO] [stdout] 89 | fn get_syms(input: &str) -> GetSyms {
[INFO] [stdout]    |                    ^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[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] 89 | fn get_syms(input: &str) -> GetSyms<'_> {
[INFO] [stdout]    |                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/format.rs:136:32
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub fn modify_while_for(input: &str) -> Vec<ModifyWhileFor> {
[INFO] [stdout]     |                                ^^^^         ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                |
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 136 | pub fn modify_while_for(input: &str) -> Vec<ModifyWhileFor<'_>> {
[INFO] [stdout]     |                                                           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/format.rs:356:35
[INFO] [stdout]     |
[INFO] [stdout] 356 | pub fn modify_value_assign(input: &str) -> Vec<ModifyValueAssign> {
[INFO] [stdout]     |                                   ^^^^         ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                   |
[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] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 356 | pub fn modify_value_assign(input: &str) -> Vec<ModifyValueAssign<'_>> {
[INFO] [stdout]     |                                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "c1885a982d12e182b8da30fa171e48970a91774119f6f428c99af4e7e566a04d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1885a982d12e182b8da30fa171e48970a91774119f6f428c99af4e7e566a04d", kill_on_drop: false }`
[INFO] [stdout] c1885a982d12e182b8da30fa171e48970a91774119f6f428c99af4e7e566a04d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bfc982f2a8d0811333d7d562be2767cd1a032259dfbcc1ca8b0808a38f46e69e
[INFO] running `Command { std: "docker" "start" "-a" "bfc982f2a8d0811333d7d562be2767cd1a032259dfbcc1ca8b0808a38f46e69e", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/cv.rs:167:9
[INFO] [stderr]     |
[INFO] [stderr] 167 |     let mut ret = Vec::new();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/cv.rs:233:9
[INFO] [stderr]     |
[INFO] [stderr] 233 |     let mut ret = Vec::new();
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> src/cv.rs:232:26
[INFO] [stderr]     |
[INFO] [stderr] 232 | pub fn gen_modify_if<'a>(ctx: &'a ModifyIf) -> Vec<Cv<'a>> {
[INFO] [stderr]     |                          ^^^ help: if this is intentional, prefix it with an underscore: `_ctx`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nxt_line`
[INFO] [stderr]   --> src/format.rs:80:13
[INFO] [stderr]    |
[INFO] [stderr] 80 |         let nxt_line = &input[line_start..next_line(input, line_start)];
[INFO] [stderr]    |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_nxt_line`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `line_end` is never read
[INFO] [stderr]   --> src/format.rs:78:28
[INFO] [stderr]    |
[INFO] [stderr] 78 |         let mut line_end = line_start;
[INFO] [stderr]    |                            ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 82 |             line_end = next_line(input, line_start);
[INFO] [stderr]    |             --------------------------------------- `line_end` is overwritten here before the previous value is read
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `skip` is never read
[INFO] [stderr]    --> src/format.rs:274:24
[INFO] [stderr]     |
[INFO] [stderr] 274 |         let mut skip = 0;
[INFO] [stderr]     |                        ^ this value is reassigned later and never used
[INFO] [stderr] ...
[INFO] [stderr] 284 |             skip = idx_start_add.unwrap();
[INFO] [stderr]     |             ----------------------------- `skip` is overwritten here before the previous value is read
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/main.rs:57:21
[INFO] [stderr]    |
[INFO] [stderr] 57 |                 for i in format::modify_value_assign(a) {
[INFO] [stderr]    |                     ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: function `add_lines` is never used
[INFO] [stderr]   --> src/format.rs:12:4
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn add_lines(input: &str) -> impl Iterator<Item = &str> {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `idx` is never read
[INFO] [stderr]   --> src/format.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub struct AddIfReturn<'a> {
[INFO] [stderr]    |            ----------- field in this struct
[INFO] [stderr] ...
[INFO] [stderr] 25 |     pub idx: usize,
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `AddIfReturn` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: method `line_number` is never used
[INFO] [stderr]   --> src/format.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 28 | impl AddIfReturn<'_> {
[INFO] [stderr]    | -------------------- method in this implementation
[INFO] [stderr] 29 |     pub fn line_number(&self) -> usize {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `mark` and `block` are never read
[INFO] [stderr]    --> src/format.rs:130:9
[INFO] [stderr]     |
[INFO] [stderr] 129 | pub struct ModifyWhileFor<'a> {
[INFO] [stderr]     |            -------------- fields in this struct
[INFO] [stderr] 130 |     pub mark: &'a str, // "for" or "while"
[INFO] [stderr]     |         ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 133 |     pub block: &'a str,
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `ModifyWhileFor` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `cond_sub`, `cond_add`, and `block` are never read
[INFO] [stderr]    --> src/format.rs:226:9
[INFO] [stderr]     |
[INFO] [stderr] 225 | pub struct ModifyIf {
[INFO] [stderr]     |            -------- fields in this struct
[INFO] [stderr] 226 |     pub cond_sub: String,
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 227 |     pub cond_add: String,
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 228 |     pub block: String,
[INFO] [stderr]     |         ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `ModifyIf` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: fields `sub_left`, `sub_right`, `add_left`, and `add_right` are never read
[INFO] [stderr]    --> src/format.rs:346:9
[INFO] [stderr]     |
[INFO] [stderr] 345 | pub struct ModifyValueAssign<'a> {
[INFO] [stderr]     |            ----------------- fields in this struct
[INFO] [stderr] 346 |     pub sub_left: &'a str,
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 347 |     pub sub_right: &'a str,
[INFO] [stderr]     |         ^^^^^^^^^
[INFO] [stderr] 348 |     pub add_left: &'a str,
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 349 |     pub add_right: &'a str,
[INFO] [stderr]     |         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `ModifyValueAssign` has derived impls for the traits `Debug` and `Clone`, 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/cv.rs:89:20
[INFO] [stderr]    |
[INFO] [stderr] 89 | fn get_syms(input: &str) -> GetSyms {
[INFO] [stderr]    |                    ^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                    |
[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] 89 | fn get_syms(input: &str) -> GetSyms<'_> {
[INFO] [stderr]    |                                    ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/format.rs:136:32
[INFO] [stderr]     |
[INFO] [stderr] 136 | pub fn modify_while_for(input: &str) -> Vec<ModifyWhileFor> {
[INFO] [stderr]     |                                ^^^^         ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                                |
[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] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 136 | pub fn modify_while_for(input: &str) -> Vec<ModifyWhileFor<'_>> {
[INFO] [stdout] running 1 test
[INFO] [stderr]     |                                                           ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/format.rs:356:35
[INFO] [stderr]     |
[INFO] [stderr] 356 | pub fn modify_value_assign(input: &str) -> Vec<ModifyValueAssign> {
[INFO] [stderr]     |                                   ^^^^         ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                                   |
[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] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 356 | pub fn modify_value_assign(input: &str) -> Vec<ModifyValueAssign<'_>> {
[INFO] [stderr]     |                                                                 ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `sysevr-diff` (bin "sysevr-diff" test) generated 16 warnings (run `cargo fix --bin "sysevr-diff" -p sysevr-diff --tests` to apply 8 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/sysevr_diff-d8657537ea13fc3c)
[INFO] [stdout] test parse::tests::code_slices_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "bfc982f2a8d0811333d7d562be2767cd1a032259dfbcc1ca8b0808a38f46e69e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfc982f2a8d0811333d7d562be2767cd1a032259dfbcc1ca8b0808a38f46e69e", kill_on_drop: false }`
[INFO] [stdout] bfc982f2a8d0811333d7d562be2767cd1a032259dfbcc1ca8b0808a38f46e69e
