[INFO] fetching crate slas 0.3.1... [INFO] testing slas-0.3.1 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1 [INFO] extracting crate slas 0.3.1 into /workspace/builds/worker-4-tc1/source [INFO] started tweaking crates.io crate slas 0.3.1 [INFO] finished tweaking crates.io crate slas 0.3.1 [INFO] tweaked toml for crates.io crate slas 0.3.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate slas 0.3.1 on toolchain 562dee4820c458d823175268e41601d4c060588a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "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" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 8 packages to latest compatible versions [INFO] [stderr] Adding cblas-sys v0.1.4 (available: v0.3.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded levitate v0.1.2 [INFO] [stderr] Downloaded blis-src v0.2.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 4b94f8393e660e053ec88d5405d5a81a154185201f2ae4562383f604607f5659 [INFO] running `Command { std: "docker" "start" "-a" "4b94f8393e660e053ec88d5405d5a81a154185201f2ae4562383f604607f5659", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "4b94f8393e660e053ec88d5405d5a81a154185201f2ae4562383f604607f5659", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4b94f8393e660e053ec88d5405d5a81a154185201f2ae4562383f604607f5659", kill_on_drop: false }` [INFO] [stdout] 4b94f8393e660e053ec88d5405d5a81a154185201f2ae4562383f604607f5659 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2f1445d900d88e09489302a7740c208c1b4e5eeb110789b79fec22acaa632816 [INFO] running `Command { std: "docker" "start" "-a" "2f1445d900d88e09489302a7740c208c1b4e5eeb110789b79fec22acaa632816", kill_on_drop: false }` [INFO] [stderr] Compiling blis-src v0.2.2 [INFO] [stderr] Compiling slas v0.3.1 (/opt/rustwide/workdir) [INFO] [stderr] Compiling cblas-sys v0.1.4 [INFO] [stderr] Compiling levitate v0.1.2 [INFO] [stdout] error: cannot find attribute `const_trait` in this scope [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/lib.rs:53:3 [INFO] [stdout] | [INFO] [stdout] 53 | #[const_trait] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: cannot find attribute `const_trait` in this scope [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/lib.rs:56:3 [INFO] [stdout] | [INFO] [stdout] 56 | #[const_trait] [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: use of unstable const library feature `const_convert` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/fast_floats.rs:40:15 [INFO] [stdout] | [INFO] [stdout] 40 | impl const Deref for Fast { [INFO] [stdout] | ^^^^^ trait is not stable as const yet [INFO] [stdout] | [INFO] [stdout] = note: see issue #143773 for more information [INFO] [stdout] = help: add `#![feature(const_convert)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2026-03-21; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: const `impl` for trait `FloatWrapper` which is not `const` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/lib.rs:106:20 [INFO] [stdout] | [INFO] [stdout] 106 | impl const FloatWrapper for $t { [INFO] [stdout] | ^^^^^^^^^^^^ this trait is not `const` [INFO] [stdout] ... [INFO] [stdout] 146 | def_primitive!(f32); [INFO] [stdout] | ------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: marking a trait with `const` ensures all default method bodies are `const` [INFO] [stdout] = note: adding a non-const method body in the future would be a breaking change [INFO] [stdout] = note: this error originates in the macro `def_primitive` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: mark `FloatWrapper` as `const` to allow it to have `const` implementations [INFO] [stdout] | [INFO] [stdout] 57 | pub const trait FloatWrapper { [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: const `impl` for trait `FloatWrapper` which is not `const` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/lib.rs:106:20 [INFO] [stdout] | [INFO] [stdout] 106 | impl const FloatWrapper for $t { [INFO] [stdout] | ^^^^^^^^^^^^ this trait is not `const` [INFO] [stdout] ... [INFO] [stdout] 147 | def_primitive!(f64); [INFO] [stdout] | ------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: marking a trait with `const` ensures all default method bodies are `const` [INFO] [stdout] = note: adding a non-const method body in the future would be a breaking change [INFO] [stdout] = note: this error originates in the macro `def_primitive` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: mark `FloatWrapper` as `const` to allow it to have `const` implementations [INFO] [stdout] | [INFO] [stdout] 57 | pub const trait FloatWrapper { [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: const `impl` for trait `FloatWrapper` which is not `const` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/lib.rs:158:24 [INFO] [stdout] | [INFO] [stdout] 158 | impl const FloatWrapper for Fast<$t> { [INFO] [stdout] | ^^^^^^^^^^^^ this trait is not `const` [INFO] [stdout] ... [INFO] [stdout] 196 | def_fast_primitive!(f32); [INFO] [stdout] | ------------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: marking a trait with `const` ensures all default method bodies are `const` [INFO] [stdout] = note: adding a non-const method body in the future would be a breaking change [INFO] [stdout] = note: this error originates in the macro `def_fast_primitive` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: mark `FloatWrapper` as `const` to allow it to have `const` implementations [INFO] [stdout] | [INFO] [stdout] 57 | pub const trait FloatWrapper { [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: const `impl` for trait `FloatWrapper` which is not `const` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/lib.rs:158:24 [INFO] [stdout] | [INFO] [stdout] 158 | impl const FloatWrapper for Fast<$t> { [INFO] [stdout] | ^^^^^^^^^^^^ this trait is not `const` [INFO] [stdout] ... [INFO] [stdout] 197 | def_fast_primitive!(f64); [INFO] [stdout] | ------------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: marking a trait with `const` ensures all default method bodies are `const` [INFO] [stdout] = note: adding a non-const method body in the future would be a breaking change [INFO] [stdout] = note: this error originates in the macro `def_fast_primitive` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: mark `FloatWrapper` as `const` to allow it to have `const` implementations [INFO] [stdout] | [INFO] [stdout] 57 | pub const trait FloatWrapper { [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: const `impl` for trait `PrimitiveFloat` which is not `const` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/lib.rs:125:20 [INFO] [stdout] | [INFO] [stdout] 125 | impl const PrimitiveFloat for $t {} [INFO] [stdout] | ^^^^^^^^^^^^^^ this trait is not `const` [INFO] [stdout] ... [INFO] [stdout] 146 | def_primitive!(f32); [INFO] [stdout] | ------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: marking a trait with `const` ensures all default method bodies are `const` [INFO] [stdout] = note: adding a non-const method body in the future would be a breaking change [INFO] [stdout] = note: this error originates in the macro `def_primitive` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: mark `PrimitiveFloat` as `const` to allow it to have `const` implementations [INFO] [stdout] | [INFO] [stdout] 54 | pub const trait PrimitiveFloat: Float + FloatWrapper {} [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: const `impl` for trait `PrimitiveFloat` which is not `const` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/lib.rs:125:20 [INFO] [stdout] | [INFO] [stdout] 125 | impl const PrimitiveFloat for $t {} [INFO] [stdout] | ^^^^^^^^^^^^^^ this trait is not `const` [INFO] [stdout] ... [INFO] [stdout] 147 | def_primitive!(f64); [INFO] [stdout] | ------------------- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: marking a trait with `const` ensures all default method bodies are `const` [INFO] [stdout] = note: adding a non-const method body in the future would be a breaking change [INFO] [stdout] = note: this error originates in the macro `def_primitive` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: mark `PrimitiveFloat` as `const` to allow it to have `const` implementations [INFO] [stdout] | [INFO] [stdout] 54 | pub const trait PrimitiveFloat: Float + FloatWrapper {} [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: `std::ops::Deref` is not yet stable as a const trait [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/lib.rs:168:21 [INFO] [stdout] | [INFO] [stdout] 168 | *self [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 196 | def_fast_primitive!(f32); [INFO] [stdout] | ------------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `def_fast_primitive` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: add `#![feature(const_convert)]` to the crate attributes to enable [INFO] [stdout] | [INFO] [stdout] 26 + #![feature(const_convert)] [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: `std::ops::Deref` is not yet stable as a const trait [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/levitate-0.1.2/src/lib.rs:168:21 [INFO] [stdout] | [INFO] [stdout] 168 | *self [INFO] [stdout] | ^^^^^ [INFO] [stdout] ... [INFO] [stdout] 197 | def_fast_primitive!(f64); [INFO] [stdout] | ------------------------ in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `def_fast_primitive` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] help: add `#![feature(const_convert)]` to the crate attributes to enable [INFO] [stdout] | [INFO] [stdout] 26 + #![feature(const_convert)] [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 `levitate` (lib) due to 11 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "2f1445d900d88e09489302a7740c208c1b4e5eeb110789b79fec22acaa632816", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2f1445d900d88e09489302a7740c208c1b4e5eeb110789b79fec22acaa632816", kill_on_drop: false }` [INFO] [stdout] 2f1445d900d88e09489302a7740c208c1b4e5eeb110789b79fec22acaa632816