[INFO] cloning repository https://github.com/poneding/xdiff
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/poneding/xdiff" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fponeding%2Fxdiff", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fponeding%2Fxdiff'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2292bd56971a1431b3bf1245c605c9792021ca11
[INFO] documenting poneding/xdiff against beta-2026-04-21 for beta-1.96-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fponeding%2Fxdiff" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/poneding/xdiff
[INFO] finished tweaking git repo https://github.com/poneding/xdiff
[INFO] tweaked toml for git repo https://github.com/poneding/xdiff written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/poneding/xdiff 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/poneding/xdiff 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] [stderr] warning: version requirement `0.9.34+deprecated` for dependency `serde_yaml` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded http-serde v2.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 3a9765d1314d597a1caa6384ae3c78abe14268cbe6895521e3ef6f9b00d44269
[INFO] running `Command { std: "docker" "start" "-a" "3a9765d1314d597a1caa6384ae3c78abe14268cbe6895521e3ef6f9b00d44269", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a9765d1314d597a1caa6384ae3c78abe14268cbe6895521e3ef6f9b00d44269", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a9765d1314d597a1caa6384ae3c78abe14268cbe6895521e3ef6f9b00d44269", kill_on_drop: false }`
[INFO] [stdout] 3a9765d1314d597a1caa6384ae3c78abe14268cbe6895521e3ef6f9b00d44269
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 292802192b2b8768896b5212323be0d648850dc8f16c8773a53b56dfa1d4e032
[INFO] running `Command { std: "docker" "start" "-a" "292802192b2b8768896b5212323be0d648850dc8f16c8773a53b56dfa1d4e032", kill_on_drop: false }`
[INFO] [stderr] warning: version requirement `0.9.34+deprecated` for dependency `serde_yaml` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling serde v1.0.213
[INFO] [stderr]     Checking bytes v1.8.0
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]    Compiling httparse v1.9.5
[INFO] [stderr]     Checking anstyle-parse v0.2.5
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking unicode-normalization v0.1.24
[INFO] [stderr]     Checking anstyle v1.0.8
[INFO] [stderr]     Checking is_terminal_polyfill v1.70.1
[INFO] [stderr]     Checking unicode-bidi v0.3.17
[INFO] [stderr]     Checking anstyle-query v1.1.1
[INFO] [stderr]     Checking colorchoice v1.0.2
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]     Checking anstream v0.6.15
[INFO] [stderr]     Checking hashbrown v0.15.0
[INFO] [stderr]    Compiling anyhow v1.0.91
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]     Checking clap_lex v0.7.2
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking clap_builder v4.5.20
[INFO] [stderr]     Checking indexmap v2.6.0
[INFO] [stderr]     Checking bstr v1.10.0
[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]     Checking ipnet v2.10.1
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]     Checking similar v2.6.0
[INFO] [stderr]     Checking http-body-util v0.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.213
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling clap_derive v4.5.18
[INFO] [stderr]     Checking tokio v1.41.0
[INFO] [stderr]     Checking clap v4.5.20
[INFO] [stderr]     Checking hyper v1.5.0
[INFO] [stderr]     Checking hyper-util v0.1.9
[INFO] [stderr]     Checking url v2.5.2
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking serde_yaml v0.9.34+deprecated
[INFO] [stderr]     Checking http-serde v2.1.1
[INFO] [stderr]     Checking reqwest v0.12.8
[INFO] [stderr]  Documenting xdiff v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.88s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/xdiff/index.html
[INFO] running `Command { std: "docker" "inspect" "292802192b2b8768896b5212323be0d648850dc8f16c8773a53b56dfa1d4e032", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "292802192b2b8768896b5212323be0d648850dc8f16c8773a53b56dfa1d4e032", kill_on_drop: false }`
[INFO] [stdout] 292802192b2b8768896b5212323be0d648850dc8f16c8773a53b56dfa1d4e032
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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" "rustdoc" "--lib" "-Zrustdoc-map" "--config" "build.rustdocflags=[\"--cfg\", \"docsrs\", \"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 988fd8b8eea51c73f4aa3f5617f011898ea9dc74c2bec93f7fc9095b38b3e9f7
[INFO] running `Command { std: "docker" "start" "-a" "988fd8b8eea51c73f4aa3f5617f011898ea9dc74c2bec93f7fc9095b38b3e9f7", kill_on_drop: false }`
[INFO] [stderr] warning: version requirement `0.9.34+deprecated` for dependency `serde_yaml` includes semver metadata which will be ignored, removing the metadata is recommended to avoid confusion
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling anyhow v1.0.91
[INFO] [stdout] error[E0425]: cannot find type `SourceFile` in crate `proc_macro`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.89/src/wrapper.rs:365:26
[INFO] [stdout]     |
[INFO] [stdout] 365 |     Compiler(proc_macro::SourceFile),
[INFO] [stdout]     |                          ^^^^^^^^^^ not found in `proc_macro`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::SourceFile;
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::fallback::SourceFile;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `SourceFile`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 365 -     Compiler(proc_macro::SourceFile),
[INFO] [stdout] 365 +     Compiler(SourceFile),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find type `SourceFile` in crate `proc_macro`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.89/src/wrapper.rs:371:32
[INFO] [stdout]     |
[INFO] [stdout] 371 |     fn nightly(sf: proc_macro::SourceFile) -> Self {
[INFO] [stdout]     |                                ^^^^^^^^^^ not found in `proc_macro`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::SourceFile;
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::fallback::SourceFile;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `SourceFile`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 371 -     fn nightly(sf: proc_macro::SourceFile) -> Self {
[INFO] [stdout] 371 +     fn nightly(sf: SourceFile) -> Self {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `source_file` found for reference `&proc_macro::Span` in the current scope
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.89/src/wrapper.rs:461:56
[INFO] [stdout]     |
[INFO] [stdout] 461 |             Span::Compiler(s) => SourceFile::nightly(s.source_file()),
[INFO] [stdout]     |                                                        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: there is a method `source` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 461 -             Span::Compiler(s) => SourceFile::nightly(s.source_file()),
[INFO] [stdout] 461 +             Span::Compiler(s) => SourceFile::nightly(s.source()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "988fd8b8eea51c73f4aa3f5617f011898ea9dc74c2bec93f7fc9095b38b3e9f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "988fd8b8eea51c73f4aa3f5617f011898ea9dc74c2bec93f7fc9095b38b3e9f7", kill_on_drop: false }`
[INFO] [stdout] 988fd8b8eea51c73f4aa3f5617f011898ea9dc74c2bec93f7fc9095b38b3e9f7