[INFO] fetching crate stm32h7xx 0.2.0...
[INFO] checking stm32h7xx-0.2.0 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] extracting crate stm32h7xx 0.2.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate stm32h7xx 0.2.0 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/.cargo/config
[INFO] started tweaking crates.io crate stm32h7xx 0.2.0
[INFO] finished tweaking crates.io crate stm32h7xx 0.2.0
[INFO] tweaked toml for crates.io crate stm32h7xx 0.2.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cortex-m v0.1.8
[INFO] [stderr]   Downloaded volatile-register v0.1.2
[INFO] [stderr]   Downloaded linked_list_allocator v0.6.6
[INFO] [stderr]   Downloaded cortex-m-rt v0.5.7
[INFO] [stderr]   Downloaded alloc-cortex-m v0.3.5
[INFO] [stderr]   Downloaded panic-semihosting v0.3.0
[INFO] [stderr]   Downloaded stm32h7 v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "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] 732741e4eab7ed1762b8e1f4c5a33e3db8a4324a309dbdd9518ec76ba3b6fe40
[INFO] running `Command { std: "docker" "start" "-a" "732741e4eab7ed1762b8e1f4c5a33e3db8a4324a309dbdd9518ec76ba3b6fe40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "732741e4eab7ed1762b8e1f4c5a33e3db8a4324a309dbdd9518ec76ba3b6fe40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "732741e4eab7ed1762b8e1f4c5a33e3db8a4324a309dbdd9518ec76ba3b6fe40", kill_on_drop: false }`
[INFO] [stdout] 732741e4eab7ed1762b8e1f4c5a33e3db8a4324a309dbdd9518ec76ba3b6fe40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--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] fd4106192f510a854df8f737b0ad18b58554129156ae91e0997dffb98dda3af2
[INFO] running `Command { std: "docker" "start" "-a" "fd4106192f510a854df8f737b0ad18b58554129156ae91e0997dffb98dda3af2", kill_on_drop: false }`
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]    Compiling cortex-m-rt v0.6.15
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]    Compiling stm32h7 v0.2.3
[INFO] [stderr]     Checking volatile-register v0.1.2
[INFO] [stderr]    Compiling stm32h7xx v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking linked_list_allocator v0.6.6
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.6/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_fn)]
[INFO] [stdout]   |            ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `alloc::alloc::AllocRef`, `alloc::alloc::AllocErr`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.6/src/lib.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 | use alloc::alloc::{AllocRef, 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]    |                    no `AllocRef` in `alloc`
[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-0.6.6/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: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `linked_list_allocator` due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "fd4106192f510a854df8f737b0ad18b58554129156ae91e0997dffb98dda3af2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd4106192f510a854df8f737b0ad18b58554129156ae91e0997dffb98dda3af2", kill_on_drop: false }`
[INFO] [stdout] fd4106192f510a854df8f737b0ad18b58554129156ae91e0997dffb98dda3af2