[INFO] fetching crate js-promises 0.1.0... [INFO] testing js-promises-0.1.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1 [INFO] extracting crate js-promises 0.1.0 into /workspace/builds/worker-2-tc2/source [INFO] started tweaking crates.io crate js-promises 0.1.0 [INFO] finished tweaking crates.io crate js-promises 0.1.0 [INFO] tweaked toml for crates.io crate js-promises 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate js-promises 0.1.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate js-promises 0.1.0 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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 999b10369f8590e09fe555be376c6c3f2356c966f51a065e22541a6b1005db8f [INFO] running `Command { std: "docker" "start" "-a" "999b10369f8590e09fe555be376c6c3f2356c966f51a065e22541a6b1005db8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "999b10369f8590e09fe555be376c6c3f2356c966f51a065e22541a6b1005db8f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "999b10369f8590e09fe555be376c6c3f2356c966f51a065e22541a6b1005db8f", kill_on_drop: false }` [INFO] [stdout] 999b10369f8590e09fe555be376c6c3f2356c966f51a065e22541a6b1005db8f [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=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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 91bfc0c8eb7d021fe65d87f248a77bc1d715bc640d754a20a3b98dd4f1ef3d5b [INFO] running `Command { std: "docker" "start" "-a" "91bfc0c8eb7d021fe65d87f248a77bc1d715bc640d754a20a3b98dd4f1ef3d5b", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.5 [INFO] [stderr] Compiling serde v1.0.101 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling ryu v1.0.0 [INFO] [stderr] Compiling stdweb-internal-runtime v0.1.5 [INFO] [stderr] Compiling itoa v0.4.4 [INFO] [stderr] Compiling sha1 v0.6.0 [INFO] [stderr] Compiling base-x v0.2.5 [INFO] [stderr] Compiling discard v1.0.4 [INFO] [stderr] Compiling stdweb v0.4.20 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling serde_json v1.0.41 [INFO] [stderr] Compiling serde_derive v1.0.101 [INFO] [stderr] Compiling stdweb-internal-macros v0.2.9 [INFO] [stderr] Compiling stdweb-derive v0.5.3 [INFO] [stderr] Compiling js-promises v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] [INFO] [stderr] thread 'rustc' (439) panicked at /rustc-dev/dec9417b8611e34e787a3e4c37686b5131f9e5c5/compiler/rustc_codegen_ssa/src/mir/intrinsic.rs:125:21: [INFO] [stderr] Box [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x77e3d0b9535b - <::print::DisplayBacktrace as core[6aaeda2c7ad07a48]::fmt::Display>::fmt [INFO] [stderr] 1: 0x77e3d122f248 - core[6aaeda2c7ad07a48]::fmt::write [INFO] [stderr] 2: 0x77e3d0bac366 - ::write_fmt [INFO] [stdout] error: internal compiler error: /rustc-dev/dec9417b8611e34e787a3e4c37686b5131f9e5c5/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] 3: 0x77e3d0b6b368 - std[e72de78501789eb0]::panicking::default_hook::{closure#0} [INFO] [stderr] 4: 0x77e3d0b88763 - std[e72de78501789eb0]::panicking::default_hook [INFO] [stderr] 5: 0x77e3cfb8566c - std[e72de78501789eb0]::panicking::update_hook::>::{closure#0} [INFO] [stderr] 6: 0x77e3d0b88a42 - std[e72de78501789eb0]::panicking::panic_with_hook [INFO] [stderr] 7: 0x77e3cfbb4cf1 - std[e72de78501789eb0]::panicking::begin_panic::::{closure#0} [INFO] [stderr] 8: 0x77e3cfbad9d6 - std[e72de78501789eb0]::sys::backtrace::__rust_end_short_backtrace::::{closure#0}, !> [INFO] [stderr] 9: 0x77e3cfbad73b - std[e72de78501789eb0]::panicking::begin_panic:: [INFO] [stderr] 10: 0x77e3cfbc0361 - ::emit_producing_guarantee [INFO] [stderr] 11: 0x77e3d0177d2c - ::span_bug:: [INFO] [stderr] 12: 0x77e3d019f8b6 - rustc_middle[ff930705cf6dddea]::util::bug::opt_span_bug_fmt::::{closure#0} [INFO] [stderr] 13: 0x77e3d019fa62 - rustc_middle[ff930705cf6dddea]::ty::context::tls::with_opt::::{closure#0}, !>::{closure#0} [INFO] [stderr] 14: 0x77e3d019053b - rustc_middle[ff930705cf6dddea]::ty::context::tls::with_context_opt::::{closure#0}, !>::{closure#0}, !> [INFO] [stderr] 15: 0x77e3cdaaa558 - rustc_middle[ff930705cf6dddea]::util::bug::span_bug_fmt:: [INFO] [stderr] 16: 0x77e3d23a35c1 - >>::codegen_intrinsic_call [INFO] [stderr] 17: 0x77e3d263e659 - rustc_codegen_ssa[68f765257a4d07e0]::mir::codegen_mir::> [INFO] [stderr] 18: 0x77e3d13ce90b - rustc_codegen_llvm[c00be91cbe6075b0]::base::compile_codegen_unit::module_codegen [INFO] [stderr] 19: 0x77e3d2561484 - ::compile_codegen_unit [INFO] [stderr] 20: 0x77e3d255d059 - rustc_codegen_ssa[68f765257a4d07e0]::base::codegen_crate:: [INFO] [stderr] 21: 0x77e3d255b125 - ::codegen_crate [INFO] [stderr] 22: 0x77e3d250693a - ::codegen_and_build_linker [INFO] [stderr] 23: 0x77e3d25014cd - rustc_interface[8fb07a87386d2e99]::interface::run_compiler::<(), rustc_driver_impl[1568c1d64401f343]::run_compiler::{closure#0}>::{closure#1} [INFO] [stderr] 24: 0x77e3d241e87e - std[e72de78501789eb0]::sys::backtrace::__rust_begin_short_backtrace::::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()> [INFO] [stderr] 25: 0x77e3d241f120 - ::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[6aaeda2c7ad07a48]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0} [INFO] [stderr] 26: 0x77e3d241ffac - ::new::thread_start [INFO] [stderr] 27: 0x77e3cbe8aaa4 - [INFO] [stderr] 28: 0x77e3cbf17a64 - 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-2026-04-10T09_04_36-437.txt`: Read-only file system (os error 30) [INFO] [stderr] [INFO] [stderr] note: rustc 1.96.0-nightly (dec9417b8 2026-03-22) 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/dec9417b8611e34e787a3e4c37686b5131f9e5c5/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=90370305c4b78932 -C extra-filename=-f7faeac144d9b8fe --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-e6b2b6b7056ee144.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-4d2483e1acc286c4.rmeta --extern stdweb_derive=/opt/rustwide/target/debug/deps/libstdweb_derive-6199b56757de6c25.so --extern stdweb_internal_macros=/opt/rustwide/target/debug/deps/libstdweb_internal_macros-ea199ea3cd118e99.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" "91bfc0c8eb7d021fe65d87f248a77bc1d715bc640d754a20a3b98dd4f1ef3d5b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "91bfc0c8eb7d021fe65d87f248a77bc1d715bc640d754a20a3b98dd4f1ef3d5b", kill_on_drop: false }` [INFO] [stdout] 91bfc0c8eb7d021fe65d87f248a77bc1d715bc640d754a20a3b98dd4f1ef3d5b