[INFO] fetching crate scratchstack-aws-signature-hyper 0.10.2...
[INFO] documenting scratchstack-aws-signature-hyper-0.10.2 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate scratchstack-aws-signature-hyper 0.10.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate scratchstack-aws-signature-hyper 0.10.2 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scratchstack-aws-signature-hyper 0.10.2
[INFO] finished tweaking crates.io crate scratchstack-aws-signature-hyper 0.10.2
[INFO] tweaked toml for crates.io crate scratchstack-aws-signature-hyper 0.10.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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 scratchstack-aws-principal v0.3.1
[INFO] [stderr]   Downloaded scratchstack-aws-signature v0.10.2
[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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb6bb56bf779c8bf5c9a3c16a7352d7d590db6f1993fa978f1d49d73cb24fb70
[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" "eb6bb56bf779c8bf5c9a3c16a7352d7d590db6f1993fa978f1d49d73cb24fb70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb6bb56bf779c8bf5c9a3c16a7352d7d590db6f1993fa978f1d49d73cb24fb70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb6bb56bf779c8bf5c9a3c16a7352d7d590db6f1993fa978f1d49d73cb24fb70", kill_on_drop: false }`
[INFO] [stdout] eb6bb56bf779c8bf5c9a3c16a7352d7d590db6f1993fa978f1d49d73cb24fb70
[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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd825724f95cbfb2ad66df1ba50fdb548f811abae30d9e108af4f9d15023948b
[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" "cd825724f95cbfb2ad66df1ba50fdb548f811abae30d9e108af4f9d15023948b", kill_on_drop: false }`
[INFO] [stderr]     Checking tower-layer v0.3.1
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]     Checking scratchstack-aws-principal v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.16
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking chrono v0.4.19
[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/scratchstack-aws-principal-0.3.1/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(doc_cfg)]
[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 `scratchstack-aws-principal` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "cd825724f95cbfb2ad66df1ba50fdb548f811abae30d9e108af4f9d15023948b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd825724f95cbfb2ad66df1ba50fdb548f811abae30d9e108af4f9d15023948b", kill_on_drop: false }`
[INFO] [stdout] cd825724f95cbfb2ad66df1ba50fdb548f811abae30d9e108af4f9d15023948b
