[INFO] fetching crate mpmc-ringbuf 0.1.4... [INFO] testing mpmc-ringbuf-0.1.4 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0 [INFO] extracting crate mpmc-ringbuf 0.1.4 into /workspace/builds/worker-6-tc1/source [INFO] started tweaking crates.io crate mpmc-ringbuf 0.1.4 [INFO] finished tweaking crates.io crate mpmc-ringbuf 0.1.4 [INFO] tweaked toml for crates.io crate mpmc-ringbuf 0.1.4 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate mpmc-ringbuf 0.1.4 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "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" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 11 packages to latest compatible versions [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: only one of `license` or `license-file` is necessary [INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression. [INFO] [stderr] `license-file` should be used if the package uses a non-standard license. [INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information. [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded libmath v0.2.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c822d4880ded4a1ea205f2c3fb10281b48d0172e09ba8ac2a714a6016d78d223 [INFO] running `Command { std: "docker" "start" "-a" "c822d4880ded4a1ea205f2c3fb10281b48d0172e09ba8ac2a714a6016d78d223", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c822d4880ded4a1ea205f2c3fb10281b48d0172e09ba8ac2a714a6016d78d223", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c822d4880ded4a1ea205f2c3fb10281b48d0172e09ba8ac2a714a6016d78d223", kill_on_drop: false }` [INFO] [stdout] c822d4880ded4a1ea205f2c3fb10281b48d0172e09ba8ac2a714a6016d78d223 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }` [INFO] [stdout] d32f671350cbd8d52ad36071d28bf87445b4a22ae2cc2ef848f55a88b64bfc15 [INFO] running `Command { std: "docker" "start" "-a" "d32f671350cbd8d52ad36071d28bf87445b4a22ae2cc2ef848f55a88b64bfc15", kill_on_drop: false }` [INFO] [stderr] warning: only one of `license` or `license-file` is necessary [INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression. [INFO] [stderr] `license-file` should be used if the package uses a non-standard license. [INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information. [INFO] [stderr] Compiling libmath v0.2.1 [INFO] [stderr] Compiling mpmc-ringbuf v0.1.4 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `core::panicking::panic` [INFO] [stdout] --> src/core.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use core::panicking::panic; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::os::unix::raw::mode_t` [INFO] [stdout] --> src/core.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | use std::os::unix::raw::mode_t; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature `panic_internals`: internal details of the implementation of the `panic!` and related macros [INFO] [stdout] --> src/core.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use core::panicking::panic; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: add `#![feature(panic_internals)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-06-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated type alias `std::os::unix::raw::mode_t`: these type aliases are no longer supported by the standard library, the `libc` crate on crates.io should be used instead for the correct definitions [INFO] [stdout] --> src/core.rs:12:25 [INFO] [stdout] | [INFO] [stdout] 12 | use std::os::unix::raw::mode_t; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0635]: unknown feature `core_panic` [INFO] [stdout] --> src/lib.rs:27:12 [INFO] [stdout] | [INFO] [stdout] 27 | #![feature(core_panic)] [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/core.rs:53:13 [INFO] [stdout] | [INFO] [stdout] 52 | panic!("Rb is running, please config before running"); [INFO] [stdout] | ----------------------------------------------------- any code following this expression is unreachable [INFO] [stdout] 53 | return; [INFO] [stdout] | ^^^^^^^ unreachable statement [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unreachable_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable statement [INFO] [stdout] --> src/core.rs:61:13 [INFO] [stdout] | [INFO] [stdout] 60 | panic!("Rb is running, please config before running"); [INFO] [stdout] | ----------------------------------------------------- any code following this expression is unreachable [INFO] [stdout] 61 | return; [INFO] [stdout] | ^^^^^^^ unreachable statement [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::borrow::BorrowMut` [INFO] [stdout] --> src/core.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | use std::borrow::BorrowMut; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/core.rs:395:17 [INFO] [stdout] | [INFO] [stdout] 395 | let mut w_page_index = self.w_page_index; [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `read_index_end` is never read [INFO] [stdout] --> src/core.rs:447:21 [INFO] [stdout] | [INFO] [stdout] 447 | let mut read_index_end = self.r_index; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [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 `mpmc-ringbuf` (lib) due to 2 previous errors; 8 warnings emitted [INFO] running `Command { std: "docker" "inspect" "d32f671350cbd8d52ad36071d28bf87445b4a22ae2cc2ef848f55a88b64bfc15", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d32f671350cbd8d52ad36071d28bf87445b4a22ae2cc2ef848f55a88b64bfc15", kill_on_drop: false }` [INFO] [stdout] d32f671350cbd8d52ad36071d28bf87445b4a22ae2cc2ef848f55a88b64bfc15