[INFO] cloning repository https://github.com/AlbinMartinsson/E7020E_labs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlbinMartinsson/E7020E_labs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlbinMartinsson%2FE7020E_labs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlbinMartinsson%2FE7020E_labs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c06967d0dabccffeb399f2d7acab78aa27320e48
[INFO] documenting AlbinMartinsson/E7020E_labs against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlbinMartinsson%2FE7020E_labs" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/AlbinMartinsson/E7020E_labs on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/.cargo/config
[INFO] started tweaking git repo https://github.com/AlbinMartinsson/E7020E_labs
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/AlbinMartinsson/E7020E_labs
[INFO] tweaked toml for git repo https://github.com/AlbinMartinsson/E7020E_labs written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/AlbinMartinsson/E7020E_labs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2dc6707b7b3c886bc5c4cffd8ba4248e1137be34664622612a18749a0838966
[INFO] running `Command { std: "docker" "start" "-a" "d2dc6707b7b3c886bc5c4cffd8ba4248e1137be34664622612a18749a0838966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2dc6707b7b3c886bc5c4cffd8ba4248e1137be34664622612a18749a0838966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2dc6707b7b3c886bc5c4cffd8ba4248e1137be34664622612a18749a0838966", kill_on_drop: false }`
[INFO] [stdout] d2dc6707b7b3c886bc5c4cffd8ba4248e1137be34664622612a18749a0838966
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbbd8ddad37ff4be07b200adfe6bd4d6dba00d97a5d6b263c0c3a08658537757
[INFO] running `Command { std: "docker" "start" "-a" "dbbd8ddad37ff4be07b200adfe6bd4d6dba00d97a5d6b263c0c3a08658537757", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling cortex-m v0.6.2
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking vcell v0.1.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling heapless v0.5.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.15
[INFO] [stderr]    Compiling cortex-m-rt v0.6.12
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking nb v0.1.2
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking as-slice v0.1.3
[INFO] [stderr]     Checking aligned v0.3.2
[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-0.6.2/src/lib.rs:32:45
[INFO] [stdout]    |
[INFO] [stdout] 32 | #![cfg_attr(feature = "inline-asm", feature(asm))]
[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 `cortex-m` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "dbbd8ddad37ff4be07b200adfe6bd4d6dba00d97a5d6b263c0c3a08658537757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbbd8ddad37ff4be07b200adfe6bd4d6dba00d97a5d6b263c0c3a08658537757", kill_on_drop: false }`
[INFO] [stdout] dbbd8ddad37ff4be07b200adfe6bd4d6dba00d97a5d6b263c0c3a08658537757