[INFO] cloning repository https://github.com/keithnoguchi/webchat [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/keithnoguchi/webchat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeithnoguchi%2Fwebchat", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeithnoguchi%2Fwebchat'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 86f4f2844db9231804dba0818c4b3bf9b337e1ab [INFO] testing keithnoguchi/webchat against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeithnoguchi%2Fwebchat" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/keithnoguchi/webchat [INFO] finished tweaking git repo https://github.com/keithnoguchi/webchat [INFO] tweaked toml for git repo https://github.com/keithnoguchi/webchat written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/keithnoguchi/webchat on toolchain 562dee4820c458d823175268e41601d4c060588a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/keithnoguchi/webchat 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded wasm-bindgen-macro v0.2.60 [INFO] [stderr] Downloaded fnv v1.0.6 [INFO] [stderr] Downloaded wasm-bindgen-macro-support v0.2.60 [INFO] [stderr] Downloaded yew v0.4.0 [INFO] [stderr] Downloaded web_logger v0.2.0 [INFO] [stderr] Downloaded serde_json v1.0.51 [INFO] [stderr] Downloaded wasm-bindgen-backend v0.2.60 [INFO] [stderr] Downloaded wasm-bindgen-shared v0.2.60 [INFO] [stderr] Downloaded bumpalo v3.2.1 [INFO] [stderr] Downloaded wasm-bindgen v0.2.60 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 48e89771ad15e46eeafeb17a548bc0701feb5758165f5350efa31fad7094b81e [INFO] running `Command { std: "docker" "start" "-a" "48e89771ad15e46eeafeb17a548bc0701feb5758165f5350efa31fad7094b81e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "48e89771ad15e46eeafeb17a548bc0701feb5758165f5350efa31fad7094b81e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "48e89771ad15e46eeafeb17a548bc0701feb5758165f5350efa31fad7094b81e", kill_on_drop: false }` [INFO] [stdout] 48e89771ad15e46eeafeb17a548bc0701feb5758165f5350efa31fad7094b81e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 70bf768c7338a39b3d380169c3681b0dff8d54f0a4a47a471b0cade9e873499e [INFO] running `Command { std: "docker" "start" "-a" "70bf768c7338a39b3d380169c3681b0dff8d54f0a4a47a471b0cade9e873499e", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.10 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.17 [INFO] [stderr] Compiling serde v1.0.106 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling ryu v1.0.3 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling itoa v0.4.5 [INFO] [stderr] Compiling stdweb-internal-runtime v0.1.5 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling failure_derive v0.1.7 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Compiling sha1 v0.6.0 [INFO] [stderr] Compiling base-x v0.2.6 [INFO] [stderr] Compiling discard v1.0.4 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling rustc-demangle v0.1.16 [INFO] [stderr] Compiling fnv v1.0.6 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling quote v1.0.3 [INFO] [stderr] Compiling bytes v0.4.12 [INFO] [stderr] Compiling backtrace-sys v0.1.35 [INFO] [stderr] Compiling stdweb v0.4.20 [INFO] [stderr] Compiling http v0.1.21 [INFO] [stderr] Compiling backtrace v0.3.46 [INFO] [stderr] Compiling serde_json v1.0.51 [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Compiling serde_derive v1.0.106 [INFO] [stderr] Compiling failure v0.1.7 [INFO] [stderr] Compiling stdweb-internal-macros v0.2.9 [INFO] [stderr] Compiling stdweb-derive v0.5.3 [INFO] [stderr] Compiling web_logger v0.2.0 [INFO] [stderr] Compiling yew v0.4.0 [INFO] [stderr] Compiling webchat v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: internal compiler error: /rustc-dev/562dee4820c458d823175268e41601d4c060588a/compiler/rustc_codegen_ssa/src/mir/intrinsic.rs:125:21: Nullary intrinsic type_name must be called in a const block. If you are seeing this message from code outside the standard library, the unstable implementation details of the relevant intrinsic may have changed. Consider using stable APIs instead. If you are adding a new nullary intrinsic that is inherently a runtime intrinsic, update this check. [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/stdweb-0.4.20/src/webcore/type_name.rs:5:9 [INFO] [stdout] | [INFO] [stdout] 5 | intrinsics::type_name::< T >() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] [INFO] [stderr] thread 'rustc' (791) panicked at /rustc-dev/562dee4820c458d823175268e41601d4c060588a/compiler/rustc_codegen_ssa/src/mir/intrinsic.rs:125:21: [INFO] [stderr] Box [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x78a7cff8455b - <::print::DisplayBacktrace as core[fa0eadad68403074]::fmt::Display>::fmt [INFO] [stderr] 1: 0x78a7d062e8c8 - core[fa0eadad68403074]::fmt::write [INFO] [stderr] 2: 0x78a7cff9b566 - ::write_fmt [INFO] [stderr] 3: 0x78a7cff5a568 - std[31e582c13f4e914f]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x78a7cff77963 - std[31e582c13f4e914f]::panicking::default_hook [INFO] [stderr] 5: 0x78a7cef73dbc - std[31e582c13f4e914f]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x78a7cff77c42 - std[31e582c13f4e914f]::panicking::panic_with_hook [INFO] [stderr] 7: 0x78a7cefa3ae1 - std[31e582c13f4e914f]::panicking::begin_panic::::{closure#0} [INFO] [stderr] 8: 0x78a7cef9c546 - std[31e582c13f4e914f]::sys::backtrace::__rust_end_short_backtrace::::{closure#0}, !> [INFO] [stderr] 9: 0x78a7cef9a3f8 - std[31e582c13f4e914f]::panicking::begin_panic:: [INFO] [stderr] 10: 0x78a7cefaf151 - ::emit_producing_guarantee [INFO] [stderr] 11: 0x78a7cf566cac - ::span_bug:: [INFO] [stderr] 12: 0x78a7cf58ec56 - rustc_middle[bc4b12ab5fd100e2]::util::bug::opt_span_bug_fmt::::{closure#0} [INFO] [stderr] 13: 0x78a7cf58ee02 - rustc_middle[bc4b12ab5fd100e2]::ty::context::tls::with_opt::::{closure#0}, !>::{closure#0} [INFO] [stderr] 14: 0x78a7cf57f3db - rustc_middle[bc4b12ab5fd100e2]::ty::context::tls::with_context_opt::::{closure#0}, !>::{closure#0}, !> [INFO] [stderr] 15: 0x78a7cd8273e8 - rustc_middle[bc4b12ab5fd100e2]::util::bug::span_bug_fmt:: [INFO] [stderr] 16: 0x78a7d17bd3ed - >>::codegen_intrinsic_call [INFO] [stderr] 17: 0x78a7d1a56634 - rustc_codegen_ssa[fe4d9ebd2fbd1d4d]::mir::codegen_mir::> [INFO] [stderr] 18: 0x78a7d078404b - rustc_codegen_llvm[a4a9ab9083920a94]::base::compile_codegen_unit::module_codegen [INFO] [stderr] 19: 0x78a7d199adc4 - ::compile_codegen_unit [INFO] [stderr] 20: 0x78a7d19969c4 - rustc_codegen_ssa[fe4d9ebd2fbd1d4d]::base::codegen_crate:: [INFO] [stderr] 21: 0x78a7d1994ae5 - ::codegen_crate [INFO] [stderr] 22: 0x78a7d19376ba - ::codegen_and_build_linker [INFO] [stderr] 23: 0x78a7d193224d - rustc_interface[fa77fbe53284b165]::interface::run_compiler::<(), rustc_driver_impl[5d9f716931f6bd73]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 24: 0x78a7d1843f3e - std[31e582c13f4e914f]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 25: 0x78a7d18447e0 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[fa0eadad68403074]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 26: 0x78a7d184566c - ::new::thread_start [INFO] [stderr] 27: 0x78a7cb263aa4 - [INFO] [stderr] 28: 0x78a7cb2f0a64 - clone [INFO] [stderr] 29: 0x0 - [INFO] [stderr] [INFO] [stderr] note: using internal features is not supported and expected to cause internal compiler errors when used incorrectly [INFO] [stderr] [INFO] [stderr] warning: the ICE couldn't be written to `/opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/stdweb-0.4.20/rustc-ice-2026-04-10T06_01_22-789.txt`: Read-only file system (os error 30) [INFO] [stderr] [INFO] [stderr] note: rustc 1.96.0-nightly (562dee482 2026-03-21) running on x86_64-unknown-linux-gnu [INFO] [stderr] [INFO] [stderr] note: compiler flags: --crate-type lib -C embed-bitcode=no -C debuginfo=2 [INFO] [stderr] [INFO] [stderr] note: some of the compiler flags provided by cargo are hidden [INFO] [stderr] [INFO] [stderr] query stack during panic: [INFO] [stderr] end of query stack [INFO] [stderr] error: could not compile `stdweb` (lib); 4712 warnings emitted [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/562dee4820c458d823175268e41601d4c060588a/bin/rustc --crate-name stdweb --edition=2015 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/stdweb-0.4.20/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 -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="serde"' --cfg 'feature="serde_json"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("default", "docs-rs", "experimental_features_which_may_break_on_minor_version_bumps", "futures-channel-preview", "futures-core-preview", "futures-executor-preview", "futures-support", "futures-util-preview", "nightly", "serde", "serde_json", "web_test"))' -C metadata=4ca9a0a28a6cb3ce -C extra-filename=-37c08f48b551a6f4 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern discard=/opt/rustwide/target/debug/deps/libdiscard-11fc78d17c12a98b.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-8731ba46f74071ff.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-484d03e5032ffe28.rmeta --extern stdweb_derive=/opt/rustwide/target/debug/deps/libstdweb_derive-4c7abad97a8969b5.so --extern stdweb_internal_macros=/opt/rustwide/target/debug/deps/libstdweb_internal_macros-4fafeb9214898a4b.so --extern stdweb_internal_runtime=/opt/rustwide/target/debug/deps/libstdweb_internal_runtime-58efda4ad4253aec.rmeta --cap-lints allow --cap-lints=forbid --cfg rust_nightly` (exit status: 101) [INFO] running `Command { std: "docker" "inspect" "70bf768c7338a39b3d380169c3681b0dff8d54f0a4a47a471b0cade9e873499e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "70bf768c7338a39b3d380169c3681b0dff8d54f0a4a47a471b0cade9e873499e", kill_on_drop: false }` [INFO] [stdout] 70bf768c7338a39b3d380169c3681b0dff8d54f0a4a47a471b0cade9e873499e