[INFO] fetching crate convey 0.2.0...
[INFO] checking convey-0.2.0 against try#f4690f24e7d9bcb0b168a02b06dd61391e8bd55a for pr-157814-crater-rollup
[INFO] extracting crate convey 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate convey 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate convey 0.2.0
[INFO] tweaked toml for crates.io crate convey 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate convey 0.2.0 on toolchain f4690f24e7d9bcb0b168a02b06dd61391e8bd55a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f4690f24e7d9bcb0b168a02b06dd61391e8bd55a" "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" "+f4690f24e7d9bcb0b168a02b06dd61391e8bd55a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 134 packages to latest compatible versions
[INFO] [stderr]       Adding assert_fs v0.10.1 (available: v1.1.4)
[INFO] [stderr]       Adding crossbeam-channel v0.3.9 (available: v0.5.15)
[INFO] [stderr]       Adding predicates v1.0.8 (available: v3.1.4)
[INFO] [stderr]       Adding proptest v0.8.7 (available: v1.11.0)
[INFO] [stderr]       Adding rand v0.6.5 (available: v0.10.1)
[INFO] [stderr]       Adding structopt v0.2.18 (available: v0.3.26)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f4690f24e7d9bcb0b168a02b06dd61391e8bd55a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7cf07dcec6eec8f91d8fcff9552b5c74122c05467aaf1800be6da9d6f61e2ab2" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] efd6cf99e67e83f3c00d067a04a072466d9d22c4ed8a68f05828ab5f9ad74666
[INFO] running `Command { std: "docker" "start" "efd6cf99e67e83f3c00d067a04a072466d9d22c4ed8a68f05828ab5f9ad74666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "efd6cf99e67e83f3c00d067a04a072466d9d22c4ed8a68f05828ab5f9ad74666" "/opt/rustwide/cargo-home/bin/cargo" "+f4690f24e7d9bcb0b168a02b06dd61391e8bd55a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efd6cf99e67e83f3c00d067a04a072466d9d22c4ed8a68f05828ab5f9ad74666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "efd6cf99e67e83f3c00d067a04a072466d9d22c4ed8a68f05828ab5f9ad74666" "/opt/rustwide/cargo-home/bin/cargo" "+f4690f24e7d9bcb0b168a02b06dd61391e8bd55a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking rustix v1.1.4
[INFO] [stderr]     Checking bstr v1.12.1
[INFO] [stderr]     Checking log v0.4.32
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling unicode-segmentation v1.13.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking backtrace v0.3.76
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stdout] error[E0658]: use of unstable library feature `core_intrinsics`: intrinsics are unlikely to ever be stabilized, instead they should be used through stabilized interfaces in the rest of the standard library
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rand_core-0.4.2/src/impls.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use core::intrinsics::transmute;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: add `#![feature(core_intrinsics)]` to the crate attributes to enable
[INFO] [stdout]    = note: this compiler was built on 2026-06-12; consider upgrading it if it is out of date
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking difference v2.0.0
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rand_core` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "efd6cf99e67e83f3c00d067a04a072466d9d22c4ed8a68f05828ab5f9ad74666", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efd6cf99e67e83f3c00d067a04a072466d9d22c4ed8a68f05828ab5f9ad74666", kill_on_drop: false }`
[INFO] [stdout] efd6cf99e67e83f3c00d067a04a072466d9d22c4ed8a68f05828ab5f9ad74666
