[INFO] fetching crate number_traits 0.2.4...
[INFO] testing number_traits-0.2.4 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate number_traits 0.2.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate number_traits 0.2.4 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate number_traits 0.2.4
[INFO] finished tweaking crates.io crate number_traits 0.2.4
[INFO] tweaked toml for crates.io crate number_traits 0.2.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", 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] 112c6d92f30a9886ac02ee4287522e72a07aaaac3c3fa9e3822f88a7c3070a77
[INFO] running `Command { std: "docker" "start" "-a" "112c6d92f30a9886ac02ee4287522e72a07aaaac3c3fa9e3822f88a7c3070a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "112c6d92f30a9886ac02ee4287522e72a07aaaac3c3fa9e3822f88a7c3070a77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "112c6d92f30a9886ac02ee4287522e72a07aaaac3c3fa9e3822f88a7c3070a77", kill_on_drop: false }`
[INFO] [stdout] 112c6d92f30a9886ac02ee4287522e72a07aaaac3c3fa9e3822f88a7c3070a77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d0081b5c41c45e6326866fce5c038eb1ffe459afc61f919c4001e5ec1860a43
[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" "4d0081b5c41c45e6326866fce5c038eb1ffe459afc61f919c4001e5ec1860a43", kill_on_drop: false }`
[INFO] [stderr]    Compiling number_traits v0.2.4 (/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(alloc)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(core_intrinsics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(intrinsics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(u128_type, i128_type, u128, i128)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]  --> src/approx_eq.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     #[inline]
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[inline]` is ignored on function prototypes
[INFO] [stdout]   --> src/approx_eq.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     #[inline]
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a foreign function or static
[INFO] [stdout]   --> src/float.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  |   #[link_name = "m"]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 9  | / extern "C" {
[INFO] [stdout] 10 | |     pub fn hypot(x: c_double, y: c_double) -> c_double;
[INFO] [stdout] 11 | |     pub fn cbrtf(n: c_float) -> c_float;
[INFO] [stdout] 12 | |     pub fn cbrt(n: c_double) -> c_double;
[INFO] [stdout] 13 | | }
[INFO] [stdout]    | |_- not a foreign function or static
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] help: try `#[link(name = "m")]` instead
[INFO] [stdout]   --> src/float.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | #[link_name = "m"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a foreign function or static
[INFO] [stdout]   --> src/pow.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  |   #[link_name = "m"]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 8  | / extern "C" {
[INFO] [stdout] 9  | |     pub fn expm1f(n: c_float) -> c_float;
[INFO] [stdout] 10 | |     pub fn log1pf(n: c_float) -> c_float;
[INFO] [stdout] 11 | |
[INFO] [stdout] 12 | |     pub fn expm1(n: c_double) -> c_double;
[INFO] [stdout] 13 | |     pub fn log1p(n: c_double) -> c_double;
[INFO] [stdout] 14 | | }
[INFO] [stdout]    | |_- not a foreign function or static
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] help: try `#[link(name = "m")]` instead
[INFO] [stdout]   --> src/pow.rs:7:1
[INFO] [stdout]    |
[INFO] [stdout] 7  | #[link_name = "m"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a foreign function or static
[INFO] [stdout]   --> src/trig_f32.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  |   #[link_name = "m"]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6  | / extern "C" {
[INFO] [stdout] 7  | |     pub fn acosf(n: c_float) -> c_float;
[INFO] [stdout] 8  | |     pub fn asinf(n: c_float) -> c_float;
[INFO] [stdout] 9  | |     pub fn atan2f(a: c_float, b: c_float) -> c_float;
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |     pub fn log1pf(n: c_float) -> c_float;
[INFO] [stdout] 16 | | }
[INFO] [stdout]    | |_- not a foreign function or static
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] help: try `#[link(name = "m")]` instead
[INFO] [stdout]   --> src/trig_f32.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | #[link_name = "m"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: attribute should be applied to a foreign function or static
[INFO] [stdout]   --> src/trig_f64.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  |   #[link_name = "m"]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 6  | / extern "C" {
[INFO] [stdout] 7  | |     pub fn acos(n: c_double) -> c_double;
[INFO] [stdout] 8  | |     pub fn asin(n: c_double) -> c_double;
[INFO] [stdout] 9  | |     pub fn atan(n: c_double) -> c_double;
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | |     pub fn log1p(n: c_double) -> c_double;
[INFO] [stdout] 16 | | }
[INFO] [stdout]    | |_- not a foreign function or static
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout] help: try `#[link(name = "m")]` instead
[INFO] [stdout]   --> src/trig_f64.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | #[link_name = "m"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `number_traits`
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "4d0081b5c41c45e6326866fce5c038eb1ffe459afc61f919c4001e5ec1860a43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d0081b5c41c45e6326866fce5c038eb1ffe459afc61f919c4001e5ec1860a43", kill_on_drop: false }`
[INFO] [stdout] 4d0081b5c41c45e6326866fce5c038eb1ffe459afc61f919c4001e5ec1860a43