[INFO] fetching crate libarc 0.1.0...
[INFO] testing libarc-0.1.0 against master#1f7f8ea0721a3b1eb73e6c6d25cccb371434b320 for pr-154065-1
[INFO] extracting crate libarc 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate libarc 0.1.0
[INFO] finished tweaking crates.io crate libarc 0.1.0
[INFO] tweaked toml for crates.io crate libarc 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate libarc 0.1.0 on toolchain 1f7f8ea0721a3b1eb73e6c6d25cccb371434b320
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 82 packages to latest compatible versions
[INFO] [stderr]       Adding hyper v0.13.10 (available: v1.8.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-async v0.0.0
[INFO] [stderr]   Downloaded hyper v0.13.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ac77a19b4484361b35a2303336acf73572b23498b667b45259f7859c3aa67f4
[INFO] running `Command { std: "docker" "start" "-a" "1ac77a19b4484361b35a2303336acf73572b23498b667b45259f7859c3aa67f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ac77a19b4484361b35a2303336acf73572b23498b667b45259f7859c3aa67f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ac77a19b4484361b35a2303336acf73572b23498b667b45259f7859c3aa67f4", kill_on_drop: false }`
[INFO] [stdout] 1ac77a19b4484361b35a2303336acf73572b23498b667b45259f7859c3aa67f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+1f7f8ea0721a3b1eb73e6c6d25cccb371434b320" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b510a419f05d2c2ba62d7179cbe6e7086bf6002489e3a587389d7e4b41c2835a
[INFO] running `Command { std: "docker" "start" "-a" "b510a419f05d2c2ba62d7179cbe6e7086bf6002489e3a587389d7e4b41c2835a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling pin-project-internal v1.1.11
[INFO] [stderr]    Compiling futures-task v0.3.32
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling tracing v0.1.44
[INFO] [stderr]    Compiling sha1_smol v1.0.1
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.5
[INFO] [stderr]    Compiling stdweb v0.4.20
[INFO] [stderr]    Compiling base-x v0.2.11
[INFO] [stderr]    Compiling httpdate v0.3.2
[INFO] [stderr]    Compiling discard v1.0.4
[INFO] [stderr]    Compiling tokio-async v0.0.0
[INFO] [stderr]    Compiling futures-util v0.3.32
[INFO] [stderr]    Compiling sha1 v0.6.1
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling pin-project v1.1.11
[INFO] [stderr]    Compiling tracing-futures v0.2.5
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling socket2 v0.3.19
[INFO] [stderr]    Compiling mio v0.6.23
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling stdweb-derive v0.5.3
[INFO] [stderr]    Compiling stdweb-internal-macros v0.2.9
[INFO] [stderr]    Compiling tokio-util v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.7
[INFO] [stderr]    Compiling hyper v0.13.10
[INFO] [stdout] error: internal compiler error: /rustc-dev/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/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' (466) panicked at /rustc-dev/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/compiler/rustc_codegen_ssa/src/mir/intrinsic.rs:125:21:
[INFO] [stderr] Box<dyn Any>
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x763da8d26dcb - <<std[f92b4c606f291077]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[786f478f706679df]::fmt::Display>::fmt
[INFO] [stderr]    1:     0x763da942f1c8 - core[786f478f706679df]::fmt::write
[INFO] [stderr]    2:     0x763da8d3ddd6 - <std[f92b4c606f291077]::sys::stdio::unix::Stderr as std[f92b4c606f291077]::io::Write>::write_fmt
[INFO] [stderr]    3:     0x763da8cfce08 - std[f92b4c606f291077]::panicking::default_hook::{closure#0}
[INFO] [stderr]    4:     0x763da8d1a1d3 - std[f92b4c606f291077]::panicking::default_hook
[INFO] [stderr]    5:     0x763da7d1e0bc - std[f92b4c606f291077]::panicking::update_hook::<alloc[64763625b5a07cdb]::boxed::Box<rustc_driver_impl[dd146e1c86fe9c2a]::install_ice_hook::{closure#1}>>::{closure#0}
[INFO] [stderr]    6:     0x763da8d1a4b2 - std[f92b4c606f291077]::panicking::panic_with_hook
[INFO] [stderr]    7:     0x763da7d4d741 - std[f92b4c606f291077]::panicking::begin_panic::<rustc_errors[5aeff7798fb65382]::ExplicitBug>::{closure#0}
[INFO] [stderr]    8:     0x763da7d46426 - std[f92b4c606f291077]::sys::backtrace::__rust_end_short_backtrace::<std[f92b4c606f291077]::panicking::begin_panic<rustc_errors[5aeff7798fb65382]::ExplicitBug>::{closure#0}, !>
[INFO] [stderr]    9:     0x763da7d4618b - std[f92b4c606f291077]::panicking::begin_panic::<rustc_errors[5aeff7798fb65382]::ExplicitBug>
[INFO] [stderr]   10:     0x763da7d58db1 - <rustc_errors[5aeff7798fb65382]::diagnostic::BugAbort as rustc_errors[5aeff7798fb65382]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
[INFO] [stderr]   11:     0x763da830f3ac - <rustc_errors[5aeff7798fb65382]::DiagCtxtHandle>::span_bug::<rustc_span[6852aeac55da1279]::span_encoding::Span, alloc[64763625b5a07cdb]::string::String>
[INFO] [stderr]   12:     0x763da8336ca6 - rustc_middle[9da1fcba01c2e50a]::util::bug::opt_span_bug_fmt::<rustc_span[6852aeac55da1279]::span_encoding::Span>::{closure#0}
[INFO] [stderr]   13:     0x763da8336e52 - rustc_middle[9da1fcba01c2e50a]::ty::context::tls::with_opt::<rustc_middle[9da1fcba01c2e50a]::util::bug::opt_span_bug_fmt<rustc_span[6852aeac55da1279]::span_encoding::Span>::{closure#0}, !>::{closure#0}
[INFO] [stderr]   14:     0x763da832792b - rustc_middle[9da1fcba01c2e50a]::ty::context::tls::with_context_opt::<rustc_middle[9da1fcba01c2e50a]::ty::context::tls::with_opt<rustc_middle[9da1fcba01c2e50a]::util::bug::opt_span_bug_fmt<rustc_span[6852aeac55da1279]::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
[INFO] [stderr]   15:     0x763da65d8c68 - rustc_middle[9da1fcba01c2e50a]::util::bug::span_bug_fmt::<rustc_span[6852aeac55da1279]::span_encoding::Span>
[INFO] [stderr]   16:     0x763daa53bced - <rustc_codegen_ssa[d9cd0b48283ddb6e]::mir::FunctionCx<rustc_codegen_llvm[76d5e3b81455d342]::builder::GenericBuilder<rustc_codegen_llvm[76d5e3b81455d342]::context::FullCx>>>::codegen_intrinsic_call
[INFO] [stderr]   17:     0x763daa855014 - rustc_codegen_ssa[d9cd0b48283ddb6e]::mir::codegen_mir::<rustc_codegen_llvm[76d5e3b81455d342]::builder::GenericBuilder<rustc_codegen_llvm[76d5e3b81455d342]::context::FullCx>>
[INFO] [stderr]   18:     0x763da958a3ca - rustc_codegen_llvm[76d5e3b81455d342]::base::compile_codegen_unit::module_codegen
[INFO] [stderr]   19:     0x763daa737b04 - <rustc_codegen_llvm[76d5e3b81455d342]::LlvmCodegenBackend as rustc_codegen_ssa[d9cd0b48283ddb6e]::traits::backend::ExtraBackendMethods>::compile_codegen_unit
[INFO] [stderr]   20:     0x763daa7337af - rustc_codegen_ssa[d9cd0b48283ddb6e]::base::codegen_crate::<rustc_codegen_llvm[76d5e3b81455d342]::LlvmCodegenBackend>
[INFO] [stderr]   21:     0x763daa73188d - <rustc_codegen_llvm[76d5e3b81455d342]::LlvmCodegenBackend as rustc_codegen_ssa[d9cd0b48283ddb6e]::traits::backend::CodegenBackend>::codegen_crate
[INFO] [stderr]   22:     0x763daa62a87a - <rustc_interface[13b2c4b636310a2c]::queries::Linker>::codegen_and_build_linker
[INFO] [stderr]   23:     0x763daa6253cd - rustc_interface[13b2c4b636310a2c]::interface::run_compiler::<(), rustc_driver_impl[dd146e1c86fe9c2a]::run_compiler::{closure#0}>::{closure#1}
[INFO] [stderr]   24:     0x763daa60943e - std[f92b4c606f291077]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[13b2c4b636310a2c]::util::run_in_thread_with_globals<rustc_interface[13b2c4b636310a2c]::util::run_in_thread_pool_with_globals<rustc_interface[13b2c4b636310a2c]::interface::run_compiler<(), rustc_driver_impl[dd146e1c86fe9c2a]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
[INFO] [stderr]   25:     0x763daa609ce0 - <std[f92b4c606f291077]::thread::lifecycle::spawn_unchecked<rustc_interface[13b2c4b636310a2c]::util::run_in_thread_with_globals<rustc_interface[13b2c4b636310a2c]::util::run_in_thread_pool_with_globals<rustc_interface[13b2c4b636310a2c]::interface::run_compiler<(), rustc_driver_impl[dd146e1c86fe9c2a]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[786f478f706679df]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   26:     0x763daa60ab6c - <std[f92b4c606f291077]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stderr]   27:     0x763da408aaa4 - <unknown>
[INFO] [stderr]   28:     0x763da4117a64 - clone
[INFO] [stderr]   29:                0x0 - <unknown>
[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-2026-03-30T03_59_55-464.txt`: Read-only file system (os error 30)
[INFO] [stderr] 
[INFO] [stderr] note: rustc 1.96.0-nightly (1f7f8ea07 2026-03-19) 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]    Compiling libarc v0.1.0 (/opt/rustwide/workdir)
[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/1f7f8ea0721a3b1eb73e6c6d25cccb371434b320/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=e6434479d2a9fa65 -C extra-filename=-2fc4bbf86cd4b88f --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-c09ed92e1bb1a730.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-d4036841cb404f24.rmeta --extern stdweb_derive=/opt/rustwide/target/debug/deps/libstdweb_derive-c3661eb6f38d81d0.so --extern stdweb_internal_macros=/opt/rustwide/target/debug/deps/libstdweb_internal_macros-6cb7f19e5498307a.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" "b510a419f05d2c2ba62d7179cbe6e7086bf6002489e3a587389d7e4b41c2835a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b510a419f05d2c2ba62d7179cbe6e7086bf6002489e3a587389d7e4b41c2835a", kill_on_drop: false }`
[INFO] [stdout] b510a419f05d2c2ba62d7179cbe6e7086bf6002489e3a587389d7e4b41c2835a
