[INFO] cloning repository https://github.com/embed-rs/stm32f7-discovery-rewrite
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/embed-rs/stm32f7-discovery-rewrite" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fembed-rs%2Fstm32f7-discovery-rewrite", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fembed-rs%2Fstm32f7-discovery-rewrite'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 93175983ed22531531138ca0cf9a12324ed9a757
[INFO] checking embed-rs/stm32f7-discovery-rewrite against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fembed-rs%2Fstm32f7-discovery-rewrite" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/embed-rs/stm32f7-discovery-rewrite on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/.cargo/config
[INFO] started tweaking git repo https://github.com/embed-rs/stm32f7-discovery-rewrite
[INFO] finished tweaking git repo https://github.com/embed-rs/stm32f7-discovery-rewrite
[INFO] tweaked toml for git repo https://github.com/embed-rs/stm32f7-discovery-rewrite written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/embed-rs/stm32f7-discovery-rewrite already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bdf2954bb4fcf5adb9949fe494665dece630669414c473e850337637e41dd2a5
[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" "bdf2954bb4fcf5adb9949fe494665dece630669414c473e850337637e41dd2a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bdf2954bb4fcf5adb9949fe494665dece630669414c473e850337637e41dd2a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bdf2954bb4fcf5adb9949fe494665dece630669414c473e850337637e41dd2a5", kill_on_drop: false }`
[INFO] [stdout] bdf2954bb4fcf5adb9949fe494665dece630669414c473e850337637e41dd2a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c195e4d41fe72a2c3e05d4860698f109188cc91774aeef820738771c469951bc
[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" "c195e4d41fe72a2c3e05d4860698f109188cc91774aeef820738771c469951bc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]     Checking bare-metal v0.2.3
[INFO] [stderr]    Compiling stm32f7 v0.2.2
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]     Checking managed v0.7.1
[INFO] [stderr]    Compiling stm32f7-discovery v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking linked_list_allocator v0.6.3
[INFO] [stderr]     Checking spin v0.4.9
[INFO] [stderr]     Checking volatile v0.2.4
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking font8x8 v0.2.4
[INFO] [stderr]    Compiling cortex-m-rt v0.5.2
[INFO] [stderr]    Compiling cortex-m v0.5.4
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.0
[INFO] [stderr]     Checking cortex-m v0.1.8
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/managed-0.7.1/src/lib.rs:2:59
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(all(feature = "alloc", not(feature = "std")), feature(alloc))]
[INFO] [stdout]   |                                                           ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `managed`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.9/src/lib.rs:6:35
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![cfg_attr(feature = "const_fn", feature(const_fn))]
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `alloc::alloc::Alloc`, `alloc::alloc::AllocErr`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.3/src/lib.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 | use alloc::alloc::{Alloc, AllocErr, Layout};
[INFO] [stdout]    |                    ^^^^^  ^^^^^^^^ no `AllocErr` in `alloc`
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    no `Alloc` in `alloc`
[INFO] [stdout]    |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]    |
[INFO] [stdout] 15 | use alloc::alloc::{alloc, AllocErr, Layout};
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]    |
[INFO] [stdout] 15 | use alloc::alloc::{Alloc, AllocError, Layout};
[INFO] [stdout]    |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `alloc::alloc::AllocErr`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.3/src/hole.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::alloc::{AllocErr, Layout};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout]   |                    |
[INFO] [stdout]   |                    no `AllocErr` in `alloc`
[INFO] [stdout]   |                    help: a similar name exists in the module: `AllocError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.3/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.3/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(alloc, allocator_api)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.3/src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(pointer_methods)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.1.8/src/asm.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         asm!("nop" :::: "volatile");
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: replace with: `llvm_asm!`
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.1.8/src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(asm)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.1.8/src/lib.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(const_fn)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c195e4d41fe72a2c3e05d4860698f109188cc91774aeef820738771c469951bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c195e4d41fe72a2c3e05d4860698f109188cc91774aeef820738771c469951bc", kill_on_drop: false }`
[INFO] [stdout] c195e4d41fe72a2c3e05d4860698f109188cc91774aeef820738771c469951bc