[INFO] fetching crate shadowsocks 1.11.2...
[INFO] documenting shadowsocks-1.11.2 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate shadowsocks 1.11.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate shadowsocks 1.11.2 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate shadowsocks 1.11.2
[INFO] finished tweaking crates.io crate shadowsocks 1.11.2
[INFO] tweaked toml for crates.io crate shadowsocks 1.11.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de0200893ccff026d409f6799522dcf394eda7551c5527917ef85319f0012a00
[INFO] running `Command { std: "docker" "start" "-a" "de0200893ccff026d409f6799522dcf394eda7551c5527917ef85319f0012a00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de0200893ccff026d409f6799522dcf394eda7551c5527917ef85319f0012a00", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de0200893ccff026d409f6799522dcf394eda7551c5527917ef85319f0012a00", kill_on_drop: false }`
[INFO] [stdout] de0200893ccff026d409f6799522dcf394eda7551c5527917ef85319f0012a00
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39ec4f00d38fe81b41a2a42e61f62264dfe3eeffc26382b4b8a47a4eef60c96a
[INFO] running `Command { std: "docker" "start" "-a" "39ec4f00d38fe81b41a2a42e61f62264dfe3eeffc26382b4b8a47a4eef60c96a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]     Checking futures-sink v0.3.16
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking crypto2 v0.1.2
[INFO] [stderr]     Checking siphasher v0.3.6
[INFO] [stderr]     Checking byte_string v1.0.0
[INFO] [stderr]     Checking arc-swap v1.3.0
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]     Checking walkdir v2.3.2
[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/crypto2-0.1.2/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(stdsimd, llvm_asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking inotify-sys v0.1.5
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking filetime v0.2.14
[INFO] [stderr]     Checking nix v0.22.0
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]     Checking resolv-conf v0.7.0
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking inotify v0.9.3
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking notify v5.0.0-pre.11
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking bloomfilter v1.0.5
[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 `crypto2`
[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" "39ec4f00d38fe81b41a2a42e61f62264dfe3eeffc26382b4b8a47a4eef60c96a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39ec4f00d38fe81b41a2a42e61f62264dfe3eeffc26382b4b8a47a4eef60c96a", kill_on_drop: false }`
[INFO] [stdout] 39ec4f00d38fe81b41a2a42e61f62264dfe3eeffc26382b4b8a47a4eef60c96a
