[INFO] fetching crate loop-forever 1.0.2...
[INFO] testing loop-forever-1.0.2 against 1.76.0 for beta-1.77-1
[INFO] extracting crate loop-forever 1.0.2 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate loop-forever 1.0.2 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate loop-forever 1.0.2
[INFO] finished tweaking crates.io crate loop-forever 1.0.2
[INFO] tweaked toml for crates.io crate loop-forever 1.0.2 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5f6c2bf65cff0173f20b8945cb9cdf7589a27ab838814a0ae77214995db364f9
[INFO] running `Command { std: "docker" "start" "-a" "5f6c2bf65cff0173f20b8945cb9cdf7589a27ab838814a0ae77214995db364f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5f6c2bf65cff0173f20b8945cb9cdf7589a27ab838814a0ae77214995db364f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f6c2bf65cff0173f20b8945cb9cdf7589a27ab838814a0ae77214995db364f9", kill_on_drop: false }`
[INFO] [stdout] 5f6c2bf65cff0173f20b8945cb9cdf7589a27ab838814a0ae77214995db364f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d6e805759e35cf5870730b5c5000e87390c0d4d95ef8a467c4c68b5c39cbb17
[INFO] running `Command { std: "docker" "start" "-a" "6d6e805759e35cf5870730b5c5000e87390c0d4d95ef8a467c4c68b5c39cbb17", kill_on_drop: false }`
[INFO] [stderr]    Compiling loop-forever v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/forever.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `asm` in this scope
[INFO] [stdout]   --> src/forever.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             asm!("syscall" :::: "volatile", "intel");
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout] 6  + use core::arch::asm;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `asm` in this scope
[INFO] [stdout]   --> src/forever.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             asm!("mov rax, 34" ::: "rax" : "volatile", "intel");
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout] 6  + use core::arch::asm;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/forever.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/forever.rs:2:56
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(not(all(windows, target_arch = "x86_64")), feature(asm))]
[INFO] [stdout]   |                                                        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `lang_items` is internal to the compiler or standard library
[INFO] [stdout]  --> src/forever.rs:1:39
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   |                                       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/forever.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![deny(warnings)]
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   = note: `#[warn(internal_features)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library
[INFO] [stdout]  --> src/forever.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0522]: definition of an unknown language item: `eh_unwind_resume`
[INFO] [stdout]   --> src/forever.rs:65:1
[INFO] [stdout]    |
[INFO] [stdout] 65 | #[lang = "eh_unwind_resume"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `eh_unwind_resume`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_fmt`
[INFO] [stdout]   --> src/forever.rs:71:1
[INFO] [stdout]    |
[INFO] [stdout] 71 | / pub extern "C" fn rust_begin_panic(_msg: ::core::fmt::Arguments, _file: &'static str, _line: u32) {
[INFO] [stdout] 72 | |     unsafe { ::core::intrinsics::abort() }
[INFO] [stdout] 73 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `core` (which `forever` depends on)
[INFO] [stdout]    = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-693a8f23970c5917.rlib
[INFO] [stdout]    = note: second definition in the local crate (`forever`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]  --> src/forever.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | extern crate libc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/forever.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/forever.rs:1:51
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   |                                                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/forever.rs:2:64
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(not(all(windows, target_arch = "x86_64")), feature(asm))]
[INFO] [stdout]   |                                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `asm` has been stable since 1.59.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/forever.rs:2:64
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(not(all(windows, target_arch = "x86_64")), feature(asm))]
[INFO] [stdout]   |                                                                ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `loop-forever` (bin "forever") due to 13 previous errors; 3 warnings emitted
[INFO] [stdout] error: aborting due to 12 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0152, E0522, E0554, E0557, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6d6e805759e35cf5870730b5c5000e87390c0d4d95ef8a467c4c68b5c39cbb17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d6e805759e35cf5870730b5c5000e87390c0d4d95ef8a467c4c68b5c39cbb17", kill_on_drop: false }`
[INFO] [stdout] 6d6e805759e35cf5870730b5c5000e87390c0d4d95ef8a467c4c68b5c39cbb17
[INFO] testing loop-forever-1.0.2 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate loop-forever 1.0.2 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate loop-forever 1.0.2 on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate loop-forever 1.0.2
[INFO] finished tweaking crates.io crate loop-forever 1.0.2
[INFO] tweaked toml for crates.io crate loop-forever 1.0.2 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d712675328a438324904321743d1fde3ae4625f7a1a9fc5bf7b3766ff15b3b58
[INFO] running `Command { std: "docker" "start" "-a" "d712675328a438324904321743d1fde3ae4625f7a1a9fc5bf7b3766ff15b3b58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d712675328a438324904321743d1fde3ae4625f7a1a9fc5bf7b3766ff15b3b58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d712675328a438324904321743d1fde3ae4625f7a1a9fc5bf7b3766ff15b3b58", kill_on_drop: false }`
[INFO] [stdout] d712675328a438324904321743d1fde3ae4625f7a1a9fc5bf7b3766ff15b3b58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7141fa2f978b3343824604448baed8f72dc29e15af4f843c9bed1a4875646cc1
[INFO] running `Command { std: "docker" "start" "-a" "7141fa2f978b3343824604448baed8f72dc29e15af4f843c9bed1a4875646cc1", kill_on_drop: false }`
[INFO] [stderr]    Compiling loop-forever v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/forever.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `asm` in this scope
[INFO] [stdout]   --> src/forever.rs:50:13
[INFO] [stdout]    |
[INFO] [stdout] 50 |             asm!("syscall" :::: "volatile", "intel");
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout] 6  + use core::arch::asm;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find macro `asm` in this scope
[INFO] [stdout]   --> src/forever.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |             asm!("mov rax, 34" ::: "rax" : "volatile", "intel");
[INFO] [stdout]    |             ^^^
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]    |
[INFO] [stdout] 6  + use core::arch::asm;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/forever.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/forever.rs:2:56
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(not(all(windows, target_arch = "x86_64")), feature(asm))]
[INFO] [stdout]   |                                                        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `lang_items` is internal to the compiler or standard library
[INFO] [stdout]  --> src/forever.rs:1:39
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   |                                       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]  --> src/forever.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![deny(warnings)]
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   = note: `#[warn(internal_features)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `core_intrinsics` is internal to the compiler or standard library
[INFO] [stdout]  --> src/forever.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0522]: definition of an unknown language item: `eh_unwind_resume`
[INFO] [stdout]   --> src/forever.rs:65:1
[INFO] [stdout]    |
[INFO] [stdout] 65 | #[lang = "eh_unwind_resume"]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `eh_unwind_resume`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_fmt`
[INFO] [stdout]   --> src/forever.rs:71:1
[INFO] [stdout]    |
[INFO] [stdout] 71 | / pub extern "C" fn rust_begin_panic(_msg: ::core::fmt::Arguments, _file: &'static str, _line: u32) {
[INFO] [stdout] 72 | |     unsafe { ::core::intrinsics::abort() }
[INFO] [stdout] 73 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `core` (which `forever` depends on)
[INFO] [stdout]    = note: first definition in `core` loaded from /opt/rustwide/rustup-home/toolchains/beta-2024-02-10-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-8d1ac131d3cb2645.rlib
[INFO] [stdout]    = note: second definition in the local crate (`forever`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/forever.rs:1:22
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/forever.rs:1:51
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn, core_intrinsics, lang_items, libc, start)]
[INFO] [stdout]   |                                                   ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/forever.rs:2:64
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(not(all(windows, target_arch = "x86_64")), feature(asm))]
[INFO] [stdout]   |                                                                ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0152, E0522, E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `loop-forever` (bin "forever") due to 11 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7141fa2f978b3343824604448baed8f72dc29e15af4f843c9bed1a4875646cc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7141fa2f978b3343824604448baed8f72dc29e15af4f843c9bed1a4875646cc1", kill_on_drop: false }`
[INFO] [stdout] 7141fa2f978b3343824604448baed8f72dc29e15af4f843c9bed1a4875646cc1
