[INFO] cloning repository https://github.com/LuksEmbeddedCorner/thesis-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LuksEmbeddedCorner/thesis-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuksEmbeddedCorner%2Fthesis-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuksEmbeddedCorner%2Fthesis-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7f8c5ad0c710d4d7df83d28919d883d5f8d38c18
[INFO] documenting LuksEmbeddedCorner/thesis-rust against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLuksEmbeddedCorner%2Fthesis-rust" "/workspace/builds/worker-17/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-17/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LuksEmbeddedCorner/thesis-rust on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-17/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/LuksEmbeddedCorner/thesis-rust
[INFO] finished tweaking git repo https://github.com/LuksEmbeddedCorner/thesis-rust
[INFO] tweaked toml for git repo https://github.com/LuksEmbeddedCorner/thesis-rust written to /workspace/builds/worker-17/source/Cargo.toml
[INFO] crate git repo https://github.com/LuksEmbeddedCorner/thesis-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cstr_core v0.2.5
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.7
[INFO] [stderr]   Downloaded linked_list_allocator v0.8.11
[INFO] [stderr]   Downloaded alloc-cortex-m v0.4.2
[INFO] [stderr]   Downloaded semihosting-files v0.1.4
[INFO] [stderr]   Downloaded stm32f4 v0.14.0
[INFO] [stderr]   Downloaded stm32f2 v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f30f6391795ce35785e303755f23971e4ff06aeb727a7c3648fea7e0874b7a28
[INFO] running `Command { std: "docker" "start" "-a" "f30f6391795ce35785e303755f23971e4ff06aeb727a7c3648fea7e0874b7a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f30f6391795ce35785e303755f23971e4ff06aeb727a7c3648fea7e0874b7a28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f30f6391795ce35785e303755f23971e4ff06aeb727a7c3648fea7e0874b7a28", kill_on_drop: false }`
[INFO] [stdout] f30f6391795ce35785e303755f23971e4ff06aeb727a7c3648fea7e0874b7a28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-17/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fa1fab02a7effe6d4f548f4e7d1d4a7ecdae6e3f3f104858f6b3f73e062b3789
[INFO] running `Command { std: "docker" "start" "-a" "fa1fab02a7effe6d4f548f4e7d1d4a7ecdae6e3f3f104858f6b3f73e062b3789", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.7.4
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.7.1
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]    Compiling stm32f2 v0.14.0
[INFO] [stderr]     Checking managed v0.8.0
[INFO] [stderr]    Compiling stm32f207-hal v0.1.0 (/opt/rustwide/workdir/stm32f207-hal)
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling stm32f4 v0.14.0
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]    Compiling bezier v0.1.0 (/opt/rustwide/workdir/bezier)
[INFO] [stderr]     Checking linked_list_allocator v0.8.11
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.8.11/src/lib.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "const_mut_refs", feature(const_mut_refs))]
[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]     Checking volatile-register v0.2.1
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr] error: could not compile `linked_list_allocator` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "fa1fab02a7effe6d4f548f4e7d1d4a7ecdae6e3f3f104858f6b3f73e062b3789", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa1fab02a7effe6d4f548f4e7d1d4a7ecdae6e3f3f104858f6b3f73e062b3789", kill_on_drop: false }`
[INFO] [stdout] fa1fab02a7effe6d4f548f4e7d1d4a7ecdae6e3f3f104858f6b3f73e062b3789