[INFO] fetching crate syntacks 0.1.0-alpha0.2...
[INFO] testing syntacks-0.1.0-alpha0.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate syntacks 0.1.0-alpha0.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate syntacks 0.1.0-alpha0.2
[INFO] finished tweaking crates.io crate syntacks 0.1.0-alpha0.2
[INFO] tweaked toml for crates.io crate syntacks 0.1.0-alpha0.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate syntacks 0.1.0-alpha0.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 21 packages to latest compatible versions
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.18)
[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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5a170cba159f0c2153b7f19b40b8f96228b1a61111577b9251e2f64843c4ad4
[INFO] running `Command { std: "docker" "start" "-a" "f5a170cba159f0c2153b7f19b40b8f96228b1a61111577b9251e2f64843c4ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5a170cba159f0c2153b7f19b40b8f96228b1a61111577b9251e2f64843c4ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5a170cba159f0c2153b7f19b40b8f96228b1a61111577b9251e2f64843c4ad4", kill_on_drop: false }`
[INFO] [stdout] f5a170cba159f0c2153b7f19b40b8f96228b1a61111577b9251e2f64843c4ad4
[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=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] cd76447b8075a4b3ecc850410207da26db7b2d6c0ab1a04bee4e53cd71cc93e5
[INFO] running `Command { std: "docker" "start" "-a" "cd76447b8075a4b3ecc850410207da26db7b2d6c0ab1a04bee4e53cd71cc93e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling futures-channel v0.3.32
[INFO] [stderr]    Compiling futures-macro v0.3.32
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling async-stream-impl v0.3.6
[INFO] [stderr]    Compiling async-stream v0.3.6
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling thiserror v1.0.69
[INFO] [stderr]    Compiling futures-executor v0.3.32
[INFO] [stderr]    Compiling futures v0.3.32
[INFO] [stderr]    Compiling syntacks v0.1.0-alpha0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `source_span`
[INFO] [stdout]   --> src/diagnostic.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Diagnostic::Message { source_span, message } => todo!(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^ help: try ignoring the field: `source_span: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]   --> src/diagnostic.rs:42:39
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Diagnostic::Message { source_span, message } => todo!(),
[INFO] [stdout]    |                                                ^^^^^^^ help: try ignoring the field: `message: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source_span`
[INFO] [stdout]   --> src/diagnostic.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |             Diagnostic::Error { source_span, error } => write!(f, "{}", error),
[INFO] [stdout]    |                                 ^^^^^^^^^^^ help: try ignoring the field: `source_span: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/source_span.rs:62:38
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn as_str(&'src self) -> Result<&str, Utf8Error> {
[INFO] [stdout]    |                    ----                 ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is named 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: consistently use `'src`
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn as_str(&'src self) -> Result<&'src str, Utf8Error> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.10s
[INFO] running `Command { std: "docker" "inspect" "cd76447b8075a4b3ecc850410207da26db7b2d6c0ab1a04bee4e53cd71cc93e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd76447b8075a4b3ecc850410207da26db7b2d6c0ab1a04bee4e53cd71cc93e5", kill_on_drop: false }`
[INFO] [stdout] cd76447b8075a4b3ecc850410207da26db7b2d6c0ab1a04bee4e53cd71cc93e5
[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=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] a3697425005d90cefca43bac8ce2423c3a701ca1235fce50a8c1ca7ac7b6a912
[INFO] running `Command { std: "docker" "start" "-a" "a3697425005d90cefca43bac8ce2423c3a701ca1235fce50a8c1ca7ac7b6a912", kill_on_drop: false }`
[INFO] [stderr]    Compiling syntacks v0.1.0-alpha0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `source_span`
[INFO] [stdout]   --> src/diagnostic.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Diagnostic::Message { source_span, message } => todo!(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^ help: try ignoring the field: `source_span: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]   --> src/diagnostic.rs:42:39
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Diagnostic::Message { source_span, message } => todo!(),
[INFO] [stdout]    |                                                ^^^^^^^ help: try ignoring the field: `message: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source_span`
[INFO] [stdout]   --> src/diagnostic.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |             Diagnostic::Error { source_span, error } => write!(f, "{}", error),
[INFO] [stdout]    |                                 ^^^^^^^^^^^ help: try ignoring the field: `source_span: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/source_span.rs:62:38
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn as_str(&'src self) -> Result<&str, Utf8Error> {
[INFO] [stdout]    |                    ----                 ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is named 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: consistently use `'src`
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn as_str(&'src self) -> Result<&'src str, Utf8Error> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source_span`
[INFO] [stdout]   --> src/diagnostic.rs:42:26
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Diagnostic::Message { source_span, message } => todo!(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^ help: try ignoring the field: `source_span: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `message`
[INFO] [stdout]   --> src/diagnostic.rs:42:39
[INFO] [stdout]    |
[INFO] [stdout] 42 |             Diagnostic::Message { source_span, message } => todo!(),
[INFO] [stdout]    |                                                ^^^^^^^ help: try ignoring the field: `message: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source_span`
[INFO] [stdout]   --> src/diagnostic.rs:43:24
[INFO] [stdout]    |
[INFO] [stdout] 43 |             Diagnostic::Error { source_span, error } => write!(f, "{}", error),
[INFO] [stdout]    |                                 ^^^^^^^^^^^ help: try ignoring the field: `source_span: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]   --> src/source_span.rs:62:38
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn as_str(&'src self) -> Result<&str, Utf8Error> {
[INFO] [stdout]    |                    ----                 ^^^^ the same lifetime is elided here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is named 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: consistently use `'src`
[INFO] [stdout]    |
[INFO] [stdout] 62 |     pub fn as_str(&'src self) -> Result<&'src str, Utf8Error> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "a3697425005d90cefca43bac8ce2423c3a701ca1235fce50a8c1ca7ac7b6a912", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3697425005d90cefca43bac8ce2423c3a701ca1235fce50a8c1ca7ac7b6a912", kill_on_drop: false }`
[INFO] [stdout] a3697425005d90cefca43bac8ce2423c3a701ca1235fce50a8c1ca7ac7b6a912
[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=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] 3d9cc8fabfb9b84898def5ae3fec5269db9bdbf445e5a90fc86af68adbc0e953
[INFO] running `Command { std: "docker" "start" "-a" "3d9cc8fabfb9b84898def5ae3fec5269db9bdbf445e5a90fc86af68adbc0e953", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `source_span`
[INFO] [stderr]   --> src/diagnostic.rs:42:26
[INFO] [stderr]    |
[INFO] [stderr] 42 |             Diagnostic::Message { source_span, message } => todo!(),
[INFO] [stderr]    |                                   ^^^^^^^^^^^ help: try ignoring the field: `source_span: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `message`
[INFO] [stderr]   --> src/diagnostic.rs:42:39
[INFO] [stderr]    |
[INFO] [stderr] 42 |             Diagnostic::Message { source_span, message } => todo!(),
[INFO] [stderr]    |                                                ^^^^^^^ help: try ignoring the field: `message: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source_span`
[INFO] [stderr]   --> src/diagnostic.rs:43:24
[INFO] [stderr]    |
[INFO] [stderr] 43 |             Diagnostic::Error { source_span, error } => write!(f, "{}", error),
[INFO] [stderr]    |                                 ^^^^^^^^^^^ help: try ignoring the field: `source_span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stderr]   --> src/source_span.rs:62:38
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn as_str(&'src self) -> Result<&str, Utf8Error> {
[INFO] [stderr]    |                    ----                 ^^^^ the same lifetime is elided here
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    the lifetime is named 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: consistently use `'src`
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn as_str(&'src self) -> Result<&'src str, Utf8Error> {
[INFO] [stderr]    |                                          ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `syntacks` (lib) generated 4 warnings (run `cargo fix --lib -p syntacks` to apply 4 suggestions)
[INFO] [stderr] warning: `syntacks` (lib test) generated 4 warnings (4 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/syntacks-74e8eef3c47e6d6b)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test source_span::test::add_source_span ... 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] [stderr]    Doc-tests syntacks
[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" "3d9cc8fabfb9b84898def5ae3fec5269db9bdbf445e5a90fc86af68adbc0e953", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d9cc8fabfb9b84898def5ae3fec5269db9bdbf445e5a90fc86af68adbc0e953", kill_on_drop: false }`
[INFO] [stdout] 3d9cc8fabfb9b84898def5ae3fec5269db9bdbf445e5a90fc86af68adbc0e953
