[INFO] fetching crate vector_calculus 0.1.0...
[INFO] testing vector_calculus-0.1.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate vector_calculus 0.1.0 into /workspace/builds/worker-7-tc2/source
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate vector_calculus 0.1.0
[INFO] finished tweaking crates.io crate vector_calculus 0.1.0
[INFO] tweaked toml for crates.io crate vector_calculus 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate vector_calculus 0.1.0 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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" "+beta-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages to latest compatible versions
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 851e52134e7dfb6d8108f6e510a519c74e3d843453f7dc3ab8af19f7dd05fd52
[INFO] running `Command { std: "docker" "start" "-a" "851e52134e7dfb6d8108f6e510a519c74e3d843453f7dc3ab8af19f7dd05fd52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "851e52134e7dfb6d8108f6e510a519c74e3d843453f7dc3ab8af19f7dd05fd52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "851e52134e7dfb6d8108f6e510a519c74e3d843453f7dc3ab8af19f7dd05fd52", kill_on_drop: false }`
[INFO] [stdout] 851e52134e7dfb6d8108f6e510a519c74e3d843453f7dc3ab8af19f7dd05fd52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46faeb24254e5ab0d599fb10ba55f6e95e8446ef5140a11d9c2b5ac4155ce503
[INFO] running `Command { std: "docker" "start" "-a" "46faeb24254e5ab0d599fb10ba55f6e95e8446ef5140a11d9c2b5ac4155ce503", kill_on_drop: false }`
[INFO] [stderr]    Compiling dyn-clone v1.0.20
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling vector_calculus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(unboxed_closures, fn_traits)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `int_montecarlo`
[INFO] [stdout]     --> src/lib.rs:2024:14
[INFO] [stdout]      |
[INFO] [stdout] 2024 | macro_rules! int_montecarlo {
[INFO] [stdout]      |              ^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `E` and `PI`
[INFO] [stdout]     --> src/lib.rs:2736:24
[INFO] [stdout]      |
[INFO] [stdout] 2736 | use std::f64::consts::{PI, E};
[INFO] [stdout]      |                        ^^  ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/lib.rs:479:24
[INFO] [stdout]     |
[INFO] [stdout] 479 |         Function::OneD(f) => {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]     --> src/lib.rs:2096:29
[INFO] [stdout]      |
[INFO] [stdout] 2096 |                 let mut y = 0.0;
[INFO] [stdout]      |                             ^^^ this value is reassigned later and never used
[INFO] [stdout] 2097 |                 while x < a.f {
[INFO] [stdout] 2098 |                     y = (b.i)(x) + 0.5*h;
[INFO] [stdout]      |                     -------------------- `y` is overwritten here before the previous value is read
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `ft` is never read
[INFO] [stdout]     --> src/lib.rs:2176:40
[INFO] [stdout]      |
[INFO] [stdout] 2176 |     let mut ft:Box<dyn Fn(f64)->f64> = Box::new(|_:f64| f64::NAN);
[INFO] [stdout]      |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 2183 |                     ft = Box::new(move |t:f64| {
[INFO] [stdout]      |                     -- `ft` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]     --> src/lib.rs:587:26
[INFO] [stdout]      |
[INFO] [stdout]  587 |             f: Box::new(|$x:f64, $y:f64, $z:f64| $f),
[INFO] [stdout]      |                          ^^
[INFO] [stdout] ...
[INFO] [stdout] 2522 |         surface_integral(&f!(x, y, z, 1.).wrap(), &self, MultipleIntegrationMethod::MonteCarlo(400))
[INFO] [stdout]      |                           --------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] help: `x` is captured in macro and introduced a unused variable
[INFO] [stdout]     --> src/lib.rs:587:26
[INFO] [stdout]      |
[INFO] [stdout]  587 |             f: Box::new(|$x:f64, $y:f64, $z:f64| $f),
[INFO] [stdout]      |                          ^^
[INFO] [stdout] ...
[INFO] [stdout] 2522 |         surface_integral(&f!(x, y, z, 1.).wrap(), &self, MultipleIntegrationMethod::MonteCarlo(400))
[INFO] [stdout]      |                           --------------- in this macro invocation
[INFO] [stdout]      = note: this warning originates in the macro `f` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]     --> src/lib.rs:587:34
[INFO] [stdout]      |
[INFO] [stdout]  587 |             f: Box::new(|$x:f64, $y:f64, $z:f64| $f),
[INFO] [stdout]      |                                  ^^
[INFO] [stdout] ...
[INFO] [stdout] 2522 |         surface_integral(&f!(x, y, z, 1.).wrap(), &self, MultipleIntegrationMethod::MonteCarlo(400))
[INFO] [stdout]      |                           --------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] help: `y` is captured in macro and introduced a unused variable
[INFO] [stdout]     --> src/lib.rs:587:34
[INFO] [stdout]      |
[INFO] [stdout]  587 |             f: Box::new(|$x:f64, $y:f64, $z:f64| $f),
[INFO] [stdout]      |                                  ^^
[INFO] [stdout] ...
[INFO] [stdout] 2522 |         surface_integral(&f!(x, y, z, 1.).wrap(), &self, MultipleIntegrationMethod::MonteCarlo(400))
[INFO] [stdout]      |                           --------------- in this macro invocation
[INFO] [stdout]      = note: this warning originates in the macro `f` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]     --> src/lib.rs:587:42
[INFO] [stdout]      |
[INFO] [stdout]  587 |             f: Box::new(|$x:f64, $y:f64, $z:f64| $f),
[INFO] [stdout]      |                                          ^^
[INFO] [stdout] ...
[INFO] [stdout] 2522 |         surface_integral(&f!(x, y, z, 1.).wrap(), &self, MultipleIntegrationMethod::MonteCarlo(400))
[INFO] [stdout]      |                           --------------- in this macro invocation
[INFO] [stdout]      |
[INFO] [stdout] help: `z` is captured in macro and introduced a unused variable
[INFO] [stdout]     --> src/lib.rs:587:42
[INFO] [stdout]      |
[INFO] [stdout]  587 |             f: Box::new(|$x:f64, $y:f64, $z:f64| $f),
[INFO] [stdout]      |                                          ^^
[INFO] [stdout] ...
[INFO] [stdout] 2522 |         surface_integral(&f!(x, y, z, 1.).wrap(), &self, MultipleIntegrationMethod::MonteCarlo(400))
[INFO] [stdout]      |                           --------------- in this macro invocation
[INFO] [stdout]      = note: this warning originates in the macro `f` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vector_calculus` (lib) due to 1 previous error; 8 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "46faeb24254e5ab0d599fb10ba55f6e95e8446ef5140a11d9c2b5ac4155ce503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46faeb24254e5ab0d599fb10ba55f6e95e8446ef5140a11d9c2b5ac4155ce503", kill_on_drop: false }`
[INFO] [stdout] 46faeb24254e5ab0d599fb10ba55f6e95e8446ef5140a11d9c2b5ac4155ce503
