[INFO] fetching crate shadowsocks-rust 1.11.2...
[INFO] testing shadowsocks-rust-1.11.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate shadowsocks-rust 1.11.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate shadowsocks-rust 1.11.2 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-3/source/rust-toolchain
[INFO] started tweaking crates.io crate shadowsocks-rust 1.11.2
[INFO] finished tweaking crates.io crate shadowsocks-rust 1.11.2
[INFO] tweaked toml for crates.io crate shadowsocks-rust 1.11.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate shadowsocks-rust 1.11.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a435015fceb77c8d843130facd31e565378016188fec9893a9b3682064ea6964
[INFO] running `Command { std: "docker" "start" "-a" "a435015fceb77c8d843130facd31e565378016188fec9893a9b3682064ea6964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a435015fceb77c8d843130facd31e565378016188fec9893a9b3682064ea6964", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a435015fceb77c8d843130facd31e565378016188fec9893a9b3682064ea6964", kill_on_drop: false }`
[INFO] [stdout] a435015fceb77c8d843130facd31e565378016188fec9893a9b3682064ea6964
[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" "RUSTFLAGS=--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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 918dc8b4e6098e552aa4917018df8bc068a90877e4f64ab57951f8e697f3006a
[INFO] running `Command { std: "docker" "start" "-a" "918dc8b4e6098e552aa4917018df8bc068a90877e4f64ab57951f8e697f3006a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]    Compiling crypto2 v0.1.2
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling siphasher v0.3.5
[INFO] [stderr]    Compiling arc-swap v0.4.8
[INFO] [stderr]    Compiling tower-layer v0.3.1
[INFO] [stderr]    Compiling checked_int_cast v1.0.0
[INFO] [stderr]    Compiling arc-swap v1.3.0
[INFO] [stderr]    Compiling byte_string v1.0.0
[INFO] [stderr]    Compiling log-mdc v0.1.0
[INFO] [stderr]    Compiling boxfnonce v0.1.1
[INFO] [stderr]    Compiling lru_time_cache v0.11.11
[INFO] [stderr]    Compiling exitcode v1.1.2
[INFO] [stderr]    Compiling tokio v1.9.0
[INFO] [stderr]    Compiling iprange v0.6.4
[INFO] [stderr]    Compiling spin v0.9.2
[INFO] [stderr]    Compiling http-body v0.4.2
[INFO] [stderr]    Compiling idna v0.2.3
[INFO] [stderr]    Compiling ordered-float v2.7.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling unsafe-any v0.4.2
[INFO] [stderr]    Compiling typemap v0.3.3
[INFO] [stderr]    Compiling qrcode v0.12.0
[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]    Compiling crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling url v2.2.2
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling inotify-sys v0.1.5
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling filetime v0.2.14
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling nix v0.22.0
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling daemonize v0.4.1
[INFO] [stderr]    Compiling resolv-conf v0.7.0
[INFO] [stderr]    Compiling inotify v0.9.3
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling rand v0.8.4
[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` 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" "918dc8b4e6098e552aa4917018df8bc068a90877e4f64ab57951f8e697f3006a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "918dc8b4e6098e552aa4917018df8bc068a90877e4f64ab57951f8e697f3006a", kill_on_drop: false }`
[INFO] [stdout] 918dc8b4e6098e552aa4917018df8bc068a90877e4f64ab57951f8e697f3006a