[INFO] fetching crate deuterium_orm 0.5.0...
[INFO] documenting deuterium_orm-0.5.0 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate deuterium_orm 0.5.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate deuterium_orm 0.5.0 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate deuterium_orm 0.5.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate deuterium_orm 0.5.0
[INFO] tweaked toml for crates.io crate deuterium_orm 0.5.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9b6bcb7625561314db0d4b4a01a721f61c46362d17b8ed9cddd6fbe7027a41c4
[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" "9b6bcb7625561314db0d4b4a01a721f61c46362d17b8ed9cddd6fbe7027a41c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9b6bcb7625561314db0d4b4a01a721f61c46362d17b8ed9cddd6fbe7027a41c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b6bcb7625561314db0d4b4a01a721f61c46362d17b8ed9cddd6fbe7027a41c4", kill_on_drop: false }`
[INFO] [stdout] 9b6bcb7625561314db0d4b4a01a721f61c46362d17b8ed9cddd6fbe7027a41c4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3229a4b1969ea5ba5d6844ae69a3c8ae5f5fedb6b481769abfca4e4fff775a3
[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" "e3229a4b1969ea5ba5d6844ae69a3c8ae5f5fedb6b481769abfca4e4fff775a3", kill_on_drop: false }`
[INFO] [stderr]     Checking siphasher v0.3.3
[INFO] [stderr]     Checking fallible-iterator v0.1.6
[INFO] [stderr]     Checking md5 v0.3.8
[INFO] [stderr]     Checking hex v0.2.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling num-bigint v0.3.0
[INFO] [stderr]    Compiling num-rational v0.3.0
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking block-buffer v0.3.3
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking net2 v0.2.34
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking socket2 v0.3.12
[INFO] [stderr]     Checking base64 v0.6.0
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking num-complex v0.3.0
[INFO] [stderr]     Checking phf_shared v0.8.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking hmac v0.5.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking hmac v0.8.1
[INFO] [stderr]     Checking sha2 v0.9.1
[INFO] [stderr]     Checking sha2 v0.7.1
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]     Checking mio v0.6.22
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking phf v0.8.0
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking rand_chacha v0.2.2
[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/regex-0.2.11/src/lib.rs:522:34
[INFO] [stdout]     |
[INFO] [stdout] 522 | #![cfg_attr(feature = "pattern", feature(pattern))]
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.5
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking r2d2 v0.8.9
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking postgres-protocol v0.3.2
[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 `regex`.
[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" "e3229a4b1969ea5ba5d6844ae69a3c8ae5f5fedb6b481769abfca4e4fff775a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3229a4b1969ea5ba5d6844ae69a3c8ae5f5fedb6b481769abfca4e4fff775a3", kill_on_drop: false }`
[INFO] [stdout] e3229a4b1969ea5ba5d6844ae69a3c8ae5f5fedb6b481769abfca4e4fff775a3