[INFO] fetching crate russimp 3.2.1...
[INFO] testing russimp-3.2.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate russimp 3.2.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate russimp 3.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate russimp 3.2.1
[INFO] tweaked toml for crates.io crate russimp 3.2.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate russimp 3.2.1 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 crates.io crate russimp 3.2.1 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-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] 1c29c4779cbf30910c548e02c76e6aa764d234452e00fd92be6c31e09ca33ee2
[INFO] running `Command { std: "docker" "start" "-a" "1c29c4779cbf30910c548e02c76e6aa764d234452e00fd92be6c31e09ca33ee2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c29c4779cbf30910c548e02c76e6aa764d234452e00fd92be6c31e09ca33ee2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c29c4779cbf30910c548e02c76e6aa764d234452e00fd92be6c31e09ca33ee2", kill_on_drop: false }`
[INFO] [stdout] 1c29c4779cbf30910c548e02c76e6aa764d234452e00fd92be6c31e09ca33ee2
[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] 19adc7ce4494db43c6e08b60fdd30f52545ebe104ae4baab37a60cea7c46cfe5
[INFO] running `Command { std: "docker" "start" "-a" "19adc7ce4494db43c6e08b60fdd30f52545ebe104ae4baab37a60cea7c46cfe5", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.16
[INFO] [stderr]    Compiling bytes v1.10.1
[INFO] [stderr]    Compiling litemap v0.7.5
[INFO] [stderr]    Compiling icu_locid_transform_data v1.5.1
[INFO] [stderr]    Compiling writeable v0.5.5
[INFO] [stderr]    Compiling bitflags v2.9.0
[INFO] [stderr]    Compiling hashbrown v0.15.2
[INFO] [stderr]    Compiling icu_properties_data v1.5.1
[INFO] [stderr]    Compiling cc v1.2.20
[INFO] [stderr]    Compiling equivalent v1.0.2
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling icu_normalizer_data v1.5.1
[INFO] [stderr]    Compiling itoa v1.0.15
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]    Compiling utf8_iter v1.0.4
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling untrusted v0.9.0
[INFO] [stderr]    Compiling utf16_iter v1.0.5
[INFO] [stderr]    Compiling write16 v1.0.0
[INFO] [stderr]    Compiling tracing-core v0.1.33
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling openssl v0.10.72
[INFO] [stderr]    Compiling percent-encoding v2.3.1
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling httparse v1.10.1
[INFO] [stderr]    Compiling rustls v0.21.12
[INFO] [stderr]    Compiling glob v0.3.2
[INFO] [stderr]    Compiling try-lock v0.2.5
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]    Compiling want v0.3.1
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling http v0.2.12
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling rustix v1.0.5
[INFO] [stderr]    Compiling openssl-probe v0.1.6
[INFO] [stderr]    Compiling tower-service v0.3.3
[INFO] [stderr]    Compiling httpdate v1.0.3
[INFO] [stderr]    Compiling semver v1.0.26
[INFO] [stderr]    Compiling regex-syntax v0.8.5
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]    Compiling linux-raw-sys v0.9.4
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling indexmap v2.9.0
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libloading v0.8.6
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling ryu v1.0.20
[INFO] [stderr]    Compiling bindgen v0.63.0
[INFO] [stderr]    Compiling adler2 v2.0.0
[INFO] [stderr]    Compiling base64 v0.21.7
[INFO] [stderr]    Compiling miniz_oxide v0.8.8
[INFO] [stderr]    Compiling encoding_rs v0.8.35
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling ipnet v2.11.0
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling socket2 v0.5.9
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling http-body v0.4.6
[INFO] [stderr]    Compiling filetime v0.2.25
[INFO] [stderr]    Compiling rustls-pemfile v1.0.4
[INFO] [stderr]    Compiling tokio v1.44.2
[INFO] [stderr]    Compiling ring v0.17.14
[INFO] [stderr]    Compiling openssl-sys v0.9.107
[INFO] [stderr]    Compiling mime v0.3.17
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling toml_datetime v0.6.9
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling sync_wrapper v0.1.2
[INFO] [stderr]    Compiling webpki-roots v0.25.4
[INFO] [stderr]    Compiling flate2 v1.1.1
[INFO] [stderr]    Compiling cmake v0.1.54
[INFO] [stderr]    Compiling rustversion v1.0.20
[INFO] [stderr]    Compiling native-tls v0.2.14
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling strum v0.25.0
[INFO] [stderr]    Compiling regex-automata v0.4.9
[INFO] [stderr] error: could not compile `regex-syntax` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2026-04-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name regex_syntax --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/regex-syntax-0.8.5/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="std"' --cfg 'feature="unicode"' --cfg 'feature="unicode-age"' --cfg 'feature="unicode-bool"' --cfg 'feature="unicode-case"' --cfg 'feature="unicode-gencat"' --cfg 'feature="unicode-perl"' --cfg 'feature="unicode-script"' --cfg 'feature="unicode-segment"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("arbitrary", "default", "std", "unicode", "unicode-age", "unicode-bool", "unicode-case", "unicode-gencat", "unicode-perl", "unicode-script", "unicode-segment"))' -C metadata=6f37ada758454b77 -C extra-filename=-1368b3d958375b3f --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `syn` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2026-04-21-x86_64-unknown-linux-gnu/bin/rustc --crate-name syn --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/syn-2.0.101/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --cfg 'feature="clone-impls"' --cfg 'feature="default"' --cfg 'feature="derive"' --cfg 'feature="extra-traits"' --cfg 'feature="fold"' --cfg 'feature="full"' --cfg 'feature="parsing"' --cfg 'feature="printing"' --cfg 'feature="proc-macro"' --cfg 'feature="visit"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("clone-impls", "default", "derive", "extra-traits", "fold", "full", "parsing", "printing", "proc-macro", "test", "visit", "visit-mut"))' -C metadata=d7e04c76a562e25b -C extra-filename=-6be86c019e398103 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-c09048c77d6dd0d8.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-0431a71a56ef9e12.rmeta --extern unicode_ident=/opt/rustwide/target/debug/deps/libunicode_ident-6572fa6bb87326c0.rmeta --cap-lints allow --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "19adc7ce4494db43c6e08b60fdd30f52545ebe104ae4baab37a60cea7c46cfe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19adc7ce4494db43c6e08b60fdd30f52545ebe104ae4baab37a60cea7c46cfe5", kill_on_drop: false }`
[INFO] [stdout] 19adc7ce4494db43c6e08b60fdd30f52545ebe104ae4baab37a60cea7c46cfe5
