[INFO] fetching crate racer-testutils 0.1.0...
[INFO] documenting racer-testutils-0.1.0 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate racer-testutils 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate racer-testutils 0.1.0 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate racer-testutils 0.1.0
[INFO] finished tweaking crates.io crate racer-testutils 0.1.0
[INFO] tweaked toml for crates.io crate racer-testutils 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v679.0.0
[INFO] [stderr]   Downloaded rls-span v0.5.2
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v679.0.0
[INFO] [stderr]   Downloaded racer v2.1.39
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v679.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v679.0.0
[INFO] [stderr]   Downloaded racer-cargo-metadata v0.1.1
[INFO] [stderr]   Downloaded racer-interner v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a4a01962e243799901f8a605bfb9b6799ce807a1b92025b7b46f5828d4fe745
[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" "5a4a01962e243799901f8a605bfb9b6799ce807a1b92025b7b46f5828d4fe745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a4a01962e243799901f8a605bfb9b6799ce807a1b92025b7b46f5828d4fe745", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a4a01962e243799901f8a605bfb9b6799ce807a1b92025b7b46f5828d4fe745", kill_on_drop: false }`
[INFO] [stdout] 5a4a01962e243799901f8a605bfb9b6799ce807a1b92025b7b46f5828d4fe745
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8fccabc6668459738493975354a5ae8fa219389db62ade7a1a33c783a66ef2b
[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" "b8fccabc6668459738493975354a5ae8fa219389db62ade7a1a33c783a66ef2b", 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v679.0.0
[INFO] [stderr]     Checking annotate-snippets v0.8.0
[INFO] [stderr]     Checking rustc-ap-rustc_fs_util v679.0.0
[INFO] [stderr]     Checking humantime v2.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling psm v0.1.11
[INFO] [stderr]    Compiling stacker v0.1.12
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v679.0.0
[INFO] [stderr]     Checking ena v0.14.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling derive_more v0.99.11
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v679.0.0
[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/smallvec-1.4.2/src/lib.rs:74:32
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![cfg_attr(feature = "union", feature(untagged_unions))]
[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/smallvec-1.4.2/src/lib.rs:77:37
[INFO] [stdout]    |
[INFO] [stdout] 77 | #![cfg_attr(feature = "may_dangle", feature(dropck_eyepatch))]
[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/rustc-ap-rustc_graphviz-679.0.0/src/lib.rs:278:1
[INFO] [stdout]     |
[INFO] [stdout] 278 | #![feature(nll)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking measureme v0.7.1
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]     Checking serde_json v1.0.59
[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/lock_api-0.4.1/src/lib.rs:91:34
[INFO] [stdout]    |
[INFO] [stdout] 91 | #![cfg_attr(feature = "nightly", feature(const_fn))]
[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 `rustc-ap-rustc_graphviz`
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[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: 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] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_macros-679.0.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic)]
[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: build failed
[INFO] running `Command { std: "docker" "inspect" "b8fccabc6668459738493975354a5ae8fa219389db62ade7a1a33c783a66ef2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8fccabc6668459738493975354a5ae8fa219389db62ade7a1a33c783a66ef2b", kill_on_drop: false }`
[INFO] [stdout] b8fccabc6668459738493975354a5ae8fa219389db62ade7a1a33c783a66ef2b
