[INFO] cloning repository https://github.com/aisamanra/rust-closure-callback [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aisamanra/rust-closure-callback" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faisamanra%2Frust-closure-callback", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faisamanra%2Frust-closure-callback'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 970f140e60df2ac6fbf5d5993bc9a4c30dc4b0cc [INFO] checking aisamanra/rust-closure-callback/970f140e60df2ac6fbf5d5993bc9a4c30dc4b0cc against f7d782a3be46d6bb4b9792fe69a61db389ba1769 for pr-161358 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faisamanra%2Frust-closure-callback" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/aisamanra/rust-closure-callback [INFO] finished tweaking git repo https://github.com/aisamanra/rust-closure-callback [INFO] tweaked toml for git repo https://github.com/aisamanra/rust-closure-callback written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/aisamanra/rust-closure-callback on toolchain f7d782a3be46d6bb4b9792fe69a61db389ba1769 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f7d782a3be46d6bb4b9792fe69a61db389ba1769" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/aisamanra/rust-closure-callback 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" "+f7d782a3be46d6bb4b9792fe69a61db389ba1769" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024` [INFO] [stderr] warning: `cb` (manifest) generated 1 warning [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded gcc v0.3.51 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }` [INFO] [stdout] b92eadd35a11d263080d3b97f58a66f0fd9ad264f5a61b737187942eebb68253 [INFO] running `Command { std: "docker" "start" "b92eadd35a11d263080d3b97f58a66f0fd9ad264f5a61b737187942eebb68253", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b92eadd35a11d263080d3b97f58a66f0fd9ad264f5a61b737187942eebb68253", 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" "b92eadd35a11d263080d3b97f58a66f0fd9ad264f5a61b737187942eebb68253" "/opt/rustwide/cargo-home/bin/cargo" "+f7d782a3be46d6bb4b9792fe69a61db389ba1769" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b92eadd35a11d263080d3b97f58a66f0fd9ad264f5a61b737187942eebb68253", 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" "b92eadd35a11d263080d3b97f58a66f0fd9ad264f5a61b737187942eebb68253" "/opt/rustwide/cargo-home/bin/cargo" "+f7d782a3be46d6bb4b9792fe69a61db389ba1769" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] warning: Cargo.toml: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024` [INFO] [stderr] warning: `cb` (manifest) generated 1 warning [INFO] [stderr] Compiling gcc v0.3.51 [INFO] [stderr] Compiling cb v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/main.rs:38:1 [INFO] [stdout] | [INFO] [stdout] 38 | extern { [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(missing_abi)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/main.rs:42:26 [INFO] [stdout] | [INFO] [stdout] 42 | fn call_callback(cb: extern fn(i32, *const c_void) -> (), [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature `rustc_private`: this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead? [INFO] [stdout] --> src/main.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | extern crate libc; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #27812 for more information [INFO] [stdout] = help: add `#![feature(rustc_private)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2026-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature `rustc_private`: this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead? [INFO] [stdout] --> src/main.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | use libc::*; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #27812 for more information [INFO] [stdout] = help: add `#![feature(rustc_private)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2026-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:53:32 [INFO] [stdout] | [INFO] [stdout] 53 | let mut payload: &mut (Box ()>, &mut Thingy) = [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 53 | let mut payload: &mut (Box ()>, &mut Thingy) = [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:70:32 [INFO] [stdout] | [INFO] [stdout] 70 | let boxed_cb: Box<(Box, &mut Thingy)> = [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 70 | let boxed_cb: Box<(Box, &mut Thingy)> = [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0658`. [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/main.rs:38:1 [INFO] [stdout] | [INFO] [stdout] 38 | extern { [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(missing_abi)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/main.rs:42:26 [INFO] [stdout] | [INFO] [stdout] 42 | fn call_callback(cb: extern fn(i32, *const c_void) -> (), [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature `rustc_private`: this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead? [INFO] [stdout] --> src/main.rs:14:1 [INFO] [stdout] | [INFO] [stdout] 14 | extern crate libc; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #27812 for more information [INFO] [stdout] = help: add `#![feature(rustc_private)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2026-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable library feature `rustc_private`: this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead? [INFO] [stdout] --> src/main.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 16 | use libc::*; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #27812 for more information [INFO] [stdout] = help: add `#![feature(rustc_private)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2026-08-19; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `cb` (bin "cb" test) due to 2 previous errors; 4 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:53:32 [INFO] [stdout] | [INFO] [stdout] 53 | let mut payload: &mut (Box ()>, &mut Thingy) = [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 53 | let mut payload: &mut (Box ()>, &mut Thingy) = [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:70:32 [INFO] [stdout] | [INFO] [stdout] 70 | let boxed_cb: Box<(Box, &mut Thingy)> = [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 70 | let boxed_cb: Box<(Box, &mut Thingy)> = [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0658`. [INFO] [stdout] [INFO] [stderr] error: could not compile `cb` (bin "cb") due to 2 previous errors; 4 warnings emitted [INFO] running `Command { std: "docker" "inspect" "b92eadd35a11d263080d3b97f58a66f0fd9ad264f5a61b737187942eebb68253", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b92eadd35a11d263080d3b97f58a66f0fd9ad264f5a61b737187942eebb68253", kill_on_drop: false }` [INFO] [stdout] b92eadd35a11d263080d3b97f58a66f0fd9ad264f5a61b737187942eebb68253