[INFO] fetching crate numer 0.1.0...
[INFO] testing numer-0.1.0 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate numer 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate numer 0.1.0 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate numer 0.1.0
[INFO] finished tweaking crates.io crate numer 0.1.0
[INFO] tweaked toml for crates.io crate numer 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3130a22d9ce0ca81bc74326e3c7887844633ce6aa980b295a3c7348153b6978
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e3130a22d9ce0ca81bc74326e3c7887844633ce6aa980b295a3c7348153b6978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3130a22d9ce0ca81bc74326e3c7887844633ce6aa980b295a3c7348153b6978", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3130a22d9ce0ca81bc74326e3c7887844633ce6aa980b295a3c7348153b6978", kill_on_drop: false }`
[INFO] [stdout] e3130a22d9ce0ca81bc74326e3c7887844633ce6aa980b295a3c7348153b6978
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 00a81bf0605df2149fb4ac5853ece28f4916b01420e9338ff87707e6d59b1182
[INFO] running `Command { std: "docker" "start" "-a" "00a81bf0605df2149fb4ac5853ece28f4916b01420e9338ff87707e6d59b1182", kill_on_drop: false }`
[INFO] [stderr]    Compiling numer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `core::num::Float`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use core::num::Float;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^ no `Float` in `num`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core_float)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `core_float`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(core_float)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `powi` found for type `f32` in the current scope
[INFO] [stdout]   --> src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |         #[inline] fn root(self) -> $T { self.powi(N::to_usize() as i32).recip() }
[INFO] [stdout]    |                                              ^^^^ method not found in `f32`
[INFO] [stdout] ...
[INFO] [stdout] 26 | impl_Radical_float!(f32);
[INFO] [stdout]    | ------------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/typenum-1.15.0/src/type_operators.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn powi(self, exp: Exp) -> Self::Output;
[INFO] [stdout]    |        ---- the method is available for `f32` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout]    = note: this error originates in the macro `impl_Radical_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 10 | use typenum::Pow;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `powi` found for type `f64` in the current scope
[INFO] [stdout]   --> src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |         #[inline] fn root(self) -> $T { self.powi(N::to_usize() as i32).recip() }
[INFO] [stdout]    |                                              ^^^^ method not found in `f64`
[INFO] [stdout] ...
[INFO] [stdout] 27 | impl_Radical_float!(f64);
[INFO] [stdout]    | ------------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/typenum-1.15.0/src/type_operators.rs:89:8
[INFO] [stdout]    |
[INFO] [stdout] 89 |     fn powi(self, exp: Exp) -> Self::Output;
[INFO] [stdout]    |        ---- the method is available for `f64` here
[INFO] [stdout]    |
[INFO] [stdout]    = help: items from traits can only be used if the trait is in scope
[INFO] [stdout]    = note: this error originates in the macro `impl_Radical_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]    |
[INFO] [stdout] 10 | use typenum::Pow;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `numer` due to 6 previous errors
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "00a81bf0605df2149fb4ac5853ece28f4916b01420e9338ff87707e6d59b1182", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00a81bf0605df2149fb4ac5853ece28f4916b01420e9338ff87707e6d59b1182", kill_on_drop: false }`
[INFO] [stdout] 00a81bf0605df2149fb4ac5853ece28f4916b01420e9338ff87707e6d59b1182