[INFO] fetching crate restruct_derive 0.1.0...
[INFO] checking restruct_derive-0.1.0 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate restruct_derive 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate restruct_derive 0.1.0 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate restruct_derive 0.1.0
[INFO] finished tweaking crates.io crate restruct_derive 0.1.0
[INFO] tweaked toml for crates.io crate restruct_derive 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded md-5 v0.8.0
[INFO] [stderr]   Downloaded globset v0.4.5
[INFO] [stderr]   Downloaded diff v0.1.12
[INFO] [stderr]   Downloaded termize v0.1.1
[INFO] [stderr]   Downloaded bytecount v0.6.0
[INFO] [stderr]   Downloaded derive-new v0.5.8
[INFO] [stderr]   Downloaded stacker v0.1.11
[INFO] [stderr]   Downloaded rustc-rayon-core v0.3.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v669.0.0
[INFO] [stderr]   Downloaded rustc-rayon v0.3.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_expand v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_parse v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_feature v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v669.0.0
[INFO] [stderr]   Downloaded rustfmt-config_proc_macro v0.2.0
[INFO] [stderr]   Downloaded structopt-derive v0.4.9
[INFO] [stderr]   Downloaded rustc-ap-rustc_errors v669.0.0
[INFO] [stderr]   Downloaded cargo_metadata v0.8.2
[INFO] [stderr]   Downloaded scoped-tls v1.0.0
[INFO] [stderr]   Downloaded toml v0.5.6
[INFO] [stderr]   Downloaded annotate-snippets v0.8.0
[INFO] [stderr]   Downloaded measureme v0.7.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v669.0.0
[INFO] [stderr]   Downloaded annotate-snippets v0.6.1
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_attr v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_fs_util v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_passes v669.0.0
[INFO] [stderr]   Downloaded ignore v0.4.16
[INFO] [stderr]   Downloaded rustc-ap-rustc_session v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v669.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v669.0.0
[INFO] [stderr]   Downloaded rustfmt-nightly v1.4.19
[INFO] [stderr]   Downloaded rustc-workspace-hack v1.0.0
[INFO] [stderr]   Downloaded term v0.6.1
[INFO] [stderr]   Downloaded restruct v0.1.0
[INFO] [stderr]   Downloaded rustc-hash v1.1.0
[INFO] [stderr]   Downloaded structopt v0.3.16
[INFO] [stderr]   Downloaded ena v0.14.0
[INFO] [stderr]   Downloaded psm v0.1.11
[INFO] [stderr]   Downloaded unicode_categories v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "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] 535ecb015b574ddc4e10c07f6544e706a9c02d5bec2091bd4fb0406e56b3cf62
[INFO] running `Command { std: "docker" "start" "-a" "535ecb015b574ddc4e10c07f6544e706a9c02d5bec2091bd4fb0406e56b3cf62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "535ecb015b574ddc4e10c07f6544e706a9c02d5bec2091bd4fb0406e56b3cf62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "535ecb015b574ddc4e10c07f6544e706a9c02d5bec2091bd4fb0406e56b3cf62", kill_on_drop: false }`
[INFO] [stdout] 535ecb015b574ddc4e10c07f6544e706a9c02d5bec2091bd4fb0406e56b3cf62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "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] ca76eae56015bca3b311e550b8d34dd16649e8d74d6d233b8ed3f7c6f5abcba0
[INFO] running `Command { std: "docker" "start" "-a" "ca76eae56015bca3b311e550b8d34dd16649e8d74d6d233b8ed3f7c6f5abcba0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking restruct v0.1.0
[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/restruct-0.1.0/src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | #![feature(external_doc)]
[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 `restruct`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ca76eae56015bca3b311e550b8d34dd16649e8d74d6d233b8ed3f7c6f5abcba0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca76eae56015bca3b311e550b8d34dd16649e8d74d6d233b8ed3f7c6f5abcba0", kill_on_drop: false }`
[INFO] [stdout] ca76eae56015bca3b311e550b8d34dd16649e8d74d6d233b8ed3f7c6f5abcba0
