[INFO] fetching crate lens 0.2.0...
[INFO] checking lens-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate lens 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate lens 0.2.0
[INFO] finished tweaking crates.io crate lens 0.2.0
[INFO] tweaked toml for crates.io crate lens 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate lens 0.2.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate lens 0.2.0 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe04ce919a65280c27454aff76c238bc57239a6b463c96437f58cd3e45d3453c
[INFO] running `Command { std: "docker" "start" "-a" "fe04ce919a65280c27454aff76c238bc57239a6b463c96437f58cd3e45d3453c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe04ce919a65280c27454aff76c238bc57239a6b463c96437f58cd3e45d3453c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe04ce919a65280c27454aff76c238bc57239a6b463c96437f58cd3e45d3453c", kill_on_drop: false }`
[INFO] [stdout] fe04ce919a65280c27454aff76c238bc57239a6b463c96437f58cd3e45d3453c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ba93d0cdbccb53ec700522c6f711af8b93b3591fbd984bd3f4cb91448fe30cf2
[INFO] running `Command { std: "docker" "start" "-a" "ba93d0cdbccb53ec700522c6f711af8b93b3591fbd984bd3f4cb91448fe30cf2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling crossbeam-utils v0.8.21
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]    Compiling once_cell v1.21.3
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking half v2.6.0
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]     Checking plotters-backend v0.3.7
[INFO] [stderr]     Checking clap_lex v0.7.4
[INFO] [stderr]     Checking anstyle v1.0.10
[INFO] [stderr]     Checking oorandom v11.1.5
[INFO] [stderr]     Checking clap_builder v4.5.39
[INFO] [stderr]     Checking plotters-svg v0.3.7
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking rayon-core v1.12.1
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking rayon v1.10.0
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking plotters v0.3.7
[INFO] [stderr]     Checking clap v4.5.39
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]    Compiling derive_more-impl v2.0.1
[INFO] [stderr]    Compiling derive_flat_debug v0.1.0
[INFO] [stderr]    Compiling pest v2.8.0
[INFO] [stderr]     Checking derive_more v2.0.1
[INFO] [stderr]    Compiling pest_meta v2.8.0
[INFO] [stderr]    Compiling pest_generator v2.8.0
[INFO] [stderr]    Compiling pest_derive v2.8.0
[INFO] [stderr]     Checking lens v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `hs::*`
[INFO] [stdout]    --> src/tokens/token.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 188 | use hs::*;
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::error::TokenError`
[INFO] [stdout]    --> src/tokens/token.rs:189:5
[INFO] [stdout]     |
[INFO] [stdout] 189 | use super::error::TokenError;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]    --> src/tokens/token.rs:191:9
[INFO] [stdout]     |
[INFO] [stdout] 191 |     use super::*;
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/tokens/tokenizer.rs:410:21
[INFO] [stdout]     |
[INFO] [stdout] 409 |                     panic!("filter_postfix is not supported yet: {:?}", pair);
[INFO] [stdout]     |                     --------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 410 |                     let mut inner = pair.into_inner();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `inner`
[INFO] [stdout]    --> src/tokens/tokenizer.rs:410:25
[INFO] [stdout]     |
[INFO] [stdout] 410 |                     let mut inner = pair.into_inner();
[INFO] [stdout]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_inner`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pair`
[INFO] [stdout]    --> src/tokens/tokenizer.rs:413:25
[INFO] [stdout]     |
[INFO] [stdout] 413 |                     let pair = inner.next().unwrap();
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_pair`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/tokens/tokenizer.rs:414:25
[INFO] [stdout]     |
[INFO] [stdout] 414 |                     let name = pair.into_inner().next().unwrap().as_str().to_string().into();
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `collected_tokens`
[INFO] [stdout]    --> src/tokens/tokenizer.rs:415:25
[INFO] [stdout]     |
[INFO] [stdout] 415 |                     let collected_tokens = vec![
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_collected_tokens`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `remaining_pairs`
[INFO] [stdout]    --> src/tokens/tokenizer.rs:419:25
[INFO] [stdout]     |
[INFO] [stdout] 419 |                     let remaining_pairs = inner.len();
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_remaining_pairs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `std_finity` is never used
[INFO] [stdout]    --> src/tokens/token.rs:195:8
[INFO] [stdout]     |
[INFO] [stdout] 195 |     fn std_finity<'a>() -> Vec<(&'a str, Fixity)> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `assoc` and `precedence` are never read
[INFO] [stdout]    --> src/tokens/token.rs:217:9
[INFO] [stdout]     |
[INFO] [stdout] 215 |     pub struct Fixity {
[INFO] [stdout]     |                ------ fields in this struct
[INFO] [stdout] 216 |         /// Left, Right, or None
[INFO] [stdout] 217 |         assoc: Assoc,
[INFO] [stdout]     |         ^^^^^
[INFO] [stdout] 218 |         precedence: u8,
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `FilterGroup` is never constructed
[INFO] [stdout]   --> src/tokens/tokenizer.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | enum ProcessingContext {
[INFO] [stdout]    |      ----------------- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 34 |     FilterGroup {
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ProcessingContext` 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: function `extend_tokens` is never used
[INFO] [stdout]    --> src/tokens/tokenizer.rs:972:4
[INFO] [stdout]     |
[INFO] [stdout] 972 | fn extend_tokens(tokens: Vec<Token>, collected_tokens: &mut Vec<Token>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<token::Query, Infallible>
[INFO] [stdout]    --> src/tokens/token.rs:237:52
[INFO] [stdout]     |
[INFO] [stdout] 237 |                         ImplicitFilterToken::Query(group.try_into().unwrap())
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lens` (lib) due to 1 previous error; 13 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ba93d0cdbccb53ec700522c6f711af8b93b3591fbd984bd3f4cb91448fe30cf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba93d0cdbccb53ec700522c6f711af8b93b3591fbd984bd3f4cb91448fe30cf2", kill_on_drop: false }`
[INFO] [stdout] ba93d0cdbccb53ec700522c6f711af8b93b3591fbd984bd3f4cb91448fe30cf2
