[INFO] fetching crate sarc-rs 1.0.0... [INFO] testing sarc-rs-1.0.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1 [INFO] extracting crate sarc-rs 1.0.0 into /workspace/builds/worker-1-tc2/source [INFO] started tweaking crates.io crate sarc-rs 1.0.0 [INFO] finished tweaking crates.io crate sarc-rs 1.0.0 [INFO] tweaked toml for crates.io crate sarc-rs 1.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate sarc-rs 1.0.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 63 packages to latest compatible versions [INFO] [stderr] Adding cached v0.36.0 (available: v0.59.0) [INFO] [stderr] Adding indexmap v1.9.3 (available: v2.14.0) [INFO] [stderr] Adding thiserror v1.0.69 (available: v2.0.18) [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-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9244807faec153ebdf66c92889be13929682ee816a9341cef9c0abeaa464aab6 [INFO] running `Command { std: "docker" "start" "-a" "9244807faec153ebdf66c92889be13929682ee816a9341cef9c0abeaa464aab6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9244807faec153ebdf66c92889be13929682ee816a9341cef9c0abeaa464aab6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9244807faec153ebdf66c92889be13929682ee816a9341cef9c0abeaa464aab6", kill_on_drop: false }` [INFO] [stdout] 9244807faec153ebdf66c92889be13929682ee816a9341cef9c0abeaa464aab6 [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=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] ce99519ab98b3a5ceeaec6493eaea2e6642aa5ffef25a63fca87d273ba8594d5 [INFO] running `Command { std: "docker" "start" "-a" "ce99519ab98b3a5ceeaec6493eaea2e6642aa5ffef25a63fca87d273ba8594d5", kill_on_drop: false }` [INFO] [stderr] Compiling strsim v0.10.0 [INFO] [stderr] Compiling futures-sink v0.3.32 [INFO] [stderr] Compiling pin-project-lite v0.2.17 [INFO] [stderr] Compiling ident_case v1.0.1 [INFO] [stderr] Compiling futures-core v0.3.32 [INFO] [stderr] Compiling proc-macro-hack v0.5.20+deprecated [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling cached_proc_macro_types v0.1.1 [INFO] [stderr] Compiling syn v2.0.117 [INFO] [stderr] Compiling hashbrown v0.12.3 [INFO] [stderr] Compiling either v1.15.0 [INFO] [stderr] Compiling binwrite_derive v0.2.1 [INFO] [stderr] Compiling num-bigint v0.4.6 [INFO] [stderr] Compiling async_once v0.2.6 [INFO] [stderr] Compiling derivative v2.2.0 [INFO] [stderr] Compiling serde_json v1.0.149 [INFO] [stderr] Compiling futures-channel v0.3.32 [INFO] [stderr] Compiling darling_core v0.13.4 [INFO] [stderr] Compiling binread_derive v2.1.0 [INFO] [stderr] Compiling paste-impl v0.1.18 [INFO] [stderr] Compiling paste v0.1.18 [INFO] [stderr] Compiling num-rational v0.4.2 [INFO] [stderr] Compiling binwrite v0.2.1 [INFO] [stderr] Compiling binread v2.2.0 [INFO] [stderr] Compiling num v0.4.3 [INFO] [stderr] Compiling darling_macro v0.13.4 [INFO] [stderr] Compiling darling v0.13.4 [INFO] [stderr] Compiling cached_proc_macro v0.13.0 [INFO] [stderr] Compiling futures-macro v0.3.32 [INFO] [stderr] Compiling thiserror-impl v1.0.69 [INFO] [stderr] Compiling tokio-macros v2.7.0 [INFO] [stderr] Compiling async-trait v0.1.89 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling tokio v1.51.1 [INFO] [stderr] Compiling futures-util v0.3.32 [INFO] [stderr] Compiling thiserror v1.0.69 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling futures-executor v0.3.32 [INFO] [stderr] Compiling futures v0.3.32 [INFO] [stderr] Compiling cached v0.36.0 [INFO] [stderr] Compiling sarc-rs v1.0.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0635]: unknown feature `const_slice_index` [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(const_slice_index)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: there is a feature with a similar name: `const_slice_len` [INFO] [stdout] | [INFO] [stdout] 1 - #![feature(const_slice_index)] [INFO] [stdout] 1 + #![feature(const_slice_len)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: cannot call conditionally-const method `core::slice::::get_unchecked::` in constant functions [INFO] [stdout] --> src/lib.rs:50:38 [INFO] [stdout] | [INFO] [stdout] 50 | .wrapping_add(*bytes.get_unchecked(i) as u32) [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants [INFO] [stdout] = note: see issue #143874 for more information [INFO] [stdout] = help: add `#![feature(const_trait_impl)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2026-03-22; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: `core::slice::::get_unchecked` is not yet stable as a const fn [INFO] [stdout] --> src/lib.rs:50:32 [INFO] [stdout] | [INFO] [stdout] 50 | .wrapping_add(*bytes.get_unchecked(i) as u32) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] help: add `#![feature(const_index)]` to the crate attributes to enable [INFO] [stdout] | [INFO] [stdout] 20 + #![feature(const_index)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0635, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0635`. [INFO] [stdout] [INFO] [stderr] error: could not compile `sarc-rs` (lib) due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "ce99519ab98b3a5ceeaec6493eaea2e6642aa5ffef25a63fca87d273ba8594d5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ce99519ab98b3a5ceeaec6493eaea2e6642aa5ffef25a63fca87d273ba8594d5", kill_on_drop: false }` [INFO] [stdout] ce99519ab98b3a5ceeaec6493eaea2e6642aa5ffef25a63fca87d273ba8594d5