[INFO] fetching crate silica 0.0.1... [INFO] testing silica-0.0.1 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1 [INFO] extracting crate silica 0.0.1 into /workspace/builds/worker-5-tc2/source [INFO] started tweaking crates.io crate silica 0.0.1 [INFO] finished tweaking crates.io crate silica 0.0.1 [INFO] tweaked toml for crates.io crate silica 0.0.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate silica 0.0.1 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] Blocking waiting for file lock on package cache [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] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b1d673e59ced0d2c808bfc616ad31445f0b450d63e73ded35239057f3a9bca18 [INFO] running `Command { std: "docker" "start" "-a" "b1d673e59ced0d2c808bfc616ad31445f0b450d63e73ded35239057f3a9bca18", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b1d673e59ced0d2c808bfc616ad31445f0b450d63e73ded35239057f3a9bca18", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b1d673e59ced0d2c808bfc616ad31445f0b450d63e73ded35239057f3a9bca18", kill_on_drop: false }` [INFO] [stdout] b1d673e59ced0d2c808bfc616ad31445f0b450d63e73ded35239057f3a9bca18 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 11748836f9e3f1effb56c0b7d38db7ec87aa1389776445a990fadc390b7989fe [INFO] running `Command { std: "docker" "start" "-a" "11748836f9e3f1effb56c0b7d38db7ec87aa1389776445a990fadc390b7989fe", kill_on_drop: false }` [INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024` [INFO] [stderr] Compiling silica v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/lib.rs:2:12 [INFO] [stdout] | [INFO] [stdout] 2 | #![feature(optin_builtin_traits)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: removed in 1.50.0; see for more information [INFO] [stdout] = note: renamed to `auto_traits` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/lib.rs:4:12 [INFO] [stdout] | [INFO] [stdout] 4 | #![feature(const_fn)] [INFO] [stdout] | ^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: removed in 1.54.0; see for more information [INFO] [stdout] = note: split into finer-grained feature gates [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved import `liballoc::arc` [INFO] [stdout] --> src/thread.rs:3:15 [INFO] [stdout] | [INFO] [stdout] 3 | use liballoc::arc::Arc; [INFO] [stdout] | ^^^ could not find `arc` in `liballoc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0432]: unresolved import `liballoc::arc` [INFO] [stdout] --> src/sync/mpsc.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use liballoc::arc::Arc; [INFO] [stdout] | ^^^ could not find `arc` in `liballoc` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0603]: module `raw_vec` is private [INFO] [stdout] --> src/thread.rs:5:15 [INFO] [stdout] | [INFO] [stdout] 5 | use liballoc::raw_vec::RawVec; [INFO] [stdout] | ^^^^^^^ private module [INFO] [stdout] | [INFO] [stdout] note: the module `raw_vec` is defined here [INFO] [stdout] --> /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/alloc/src/lib.rs:208:0 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0603]: module `raw_vec` is private [INFO] [stdout] --> src/io.rs:4:15 [INFO] [stdout] | [INFO] [stdout] 4 | use liballoc::raw_vec::RawVec; [INFO] [stdout] | ^^^^^^^ private module [INFO] [stdout] | [INFO] [stdout] note: the module `raw_vec` is defined here [INFO] [stdout] --> /rustc/dec9417b8611e34e787a3e4c37686b5131f9e5c5/library/alloc/src/lib.rs:208:0 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: negative trait bounds are not fully implemented; use marker types for now [INFO] [stdout] --> src/sync/mod.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | impl !Sync for CriticalSection {} [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #68318 for more information [INFO] [stdout] = help: add `#![feature(negative_impls)]` 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[E0658]: negative trait bounds are not fully implemented; use marker types for now [INFO] [stdout] --> src/sync/mod.rs:40:9 [INFO] [stdout] | [INFO] [stdout] 40 | impl !Send for CriticalSection {} [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #68318 for more information [INFO] [stdout] = help: add `#![feature(negative_impls)]` 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] warning: the feature `needs_panic_runtime` is internal to the compiler or standard library [INFO] [stdout] --> src/lib.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(needs_panic_runtime)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: using it is strongly discouraged [INFO] [stdout] = note: `#[warn(internal_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/thread.rs:13:1 [INFO] [stdout] | [INFO] [stdout] 13 | 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/thread.rs:14:57 [INFO] [stdout] | [INFO] [stdout] 14 | fn setup_stack(stack: *const usize, size: usize, f: extern fn(*mut u8), th: *mut u8) -> *const usize; [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/thread.rs:59:1 [INFO] [stdout] | [INFO] [stdout] 59 | extern fn wrapper(p: *mut u8) { [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated [INFO] [stdout] --> src/sync/mod.rs:5:1 [INFO] [stdout] | [INFO] [stdout] 5 | extern { [INFO] [stdout] | ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition [INFO] [stdout] --> src/peripheral/gpio.rs:7:25 [INFO] [stdout] | [INFO] [stdout] 7 | fn write(&mut self, bool) -> bool; [INFO] [stdout] | ^^^^ help: try naming the parameter or explicitly ignoring it: `_: bool` [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(anonymous_parameters)]` (part of `#[warn(rust_2018_compatibility)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `alloc` has been stable since 1.36.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:3:12 [INFO] [stdout] | [INFO] [stdout] 3 | #![feature(alloc)] [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/thread.rs:41:12 [INFO] [stdout] | [INFO] [stdout] 41 | f: Box, [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] 41 | f: Box, [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/thread.rs:69:23 [INFO] [stdout] | [INFO] [stdout] 69 | pub fn new(f: Box, name: &'static str, stack_size: usize, pri: ThreadPriority) -> Thread { [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] 69 | pub fn new(f: Box, name: &'static str, stack_size: usize, pri: ThreadPriority) -> Thread { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0432, E0557, E0603, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0432`. [INFO] [stdout] [INFO] [stderr] error: could not compile `silica` (lib) due to 8 previous errors; 9 warnings emitted [INFO] running `Command { std: "docker" "inspect" "11748836f9e3f1effb56c0b7d38db7ec87aa1389776445a990fadc390b7989fe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "11748836f9e3f1effb56c0b7d38db7ec87aa1389776445a990fadc390b7989fe", kill_on_drop: false }` [INFO] [stdout] 11748836f9e3f1effb56c0b7d38db7ec87aa1389776445a990fadc390b7989fe