[INFO] cloning repository https://github.com/comet-rs/comet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/comet-rs/comet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomet-rs%2Fcomet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomet-rs%2Fcomet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0054c5719cfe0ee343e72fb6133e86f0492bbd0d
[INFO] testing comet-rs/comet against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomet-rs%2Fcomet" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/comet-rs/comet 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] started tweaking git repo https://github.com/comet-rs/comet
[INFO] finished tweaking git repo https://github.com/comet-rs/comet
[INFO] tweaked toml for git repo https://github.com/comet-rs/comet written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/comet-rs/comet 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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 20aa6e634ddb0a7638f7386ced252d0613caf47a78a3b83e3adb31e49b9ec9f6
[INFO] running `Command { std: "docker" "start" "-a" "20aa6e634ddb0a7638f7386ced252d0613caf47a78a3b83e3adb31e49b9ec9f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20aa6e634ddb0a7638f7386ced252d0613caf47a78a3b83e3adb31e49b9ec9f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20aa6e634ddb0a7638f7386ced252d0613caf47a78a3b83e3adb31e49b9ec9f6", kill_on_drop: false }`
[INFO] [stdout] 20aa6e634ddb0a7638f7386ced252d0613caf47a78a3b83e3adb31e49b9ec9f6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] f04f7f6cbbb6867d95addf981f8534ce04f301becdcae1e7bd956f4cdc3cdaad
[INFO] running `Command { std: "docker" "start" "-a" "f04f7f6cbbb6867d95addf981f8534ce04f301becdcae1e7bd956f4cdc3cdaad", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling futures-io v0.3.15
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling block-padding v0.2.1
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling funty v1.1.0
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling oid-registry v0.1.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.19
[INFO] [stderr]    Compiling object v0.24.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling crypto2 v0.1.2
[INFO] [stderr]    Compiling keccak v0.1.0
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling lz_fnv v0.1.2
[INFO] [stderr]    Compiling hex v0.4.3
[INFO] [stderr]    Compiling os_str_bytes v2.4.0
[INFO] [stderr]    Compiling android_log-sys v0.2.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling cesu8 v1.1.0
[INFO] [stderr]    Compiling jni-sys v0.3.0
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling backtrace v0.3.59
[INFO] [stderr]    Compiling quick-protobuf v0.8.0
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling lru-cache v0.1.2
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling textwrap v0.12.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling jni v0.18.0
[INFO] [stderr]    Compiling combine v4.5.2
[INFO] [stderr]    Compiling enum-utils-from-str v0.1.2
[INFO] [stderr]    Compiling block-buffer v0.9.0
[INFO] [stderr]    Compiling pem v0.8.3
[INFO] [stderr]    Compiling sha-1 v0.9.6
[INFO] [stderr]    Compiling sha3 v0.9.1
[INFO] [stderr]    Compiling bitvec v0.19.5
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling env_logger v0.7.1
[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 android_logger v0.9.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling signal-hook-registry v1.3.0
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling flate2 v1.0.20
[INFO] [stderr]    Compiling hostname v0.3.1
[INFO] [stderr]    Compiling parking_lot_core v0.7.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v1.9.3
[INFO] [stderr]    Compiling resolv-conf v0.7.0
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling addr2line v0.15.1
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling fern v0.6.0
[INFO] [stderr]    Compiling parking_lot v0.10.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand_xorshift v0.3.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling headers v0.3.4
[INFO] [stderr]    Compiling flurry v0.3.1
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling sct v0.6.1
[INFO] [stderr]    Compiling webpki v0.21.4
[INFO] [stderr]    Compiling ct-logs v0.8.0
[INFO] [stderr]    Compiling yasna v0.4.0
[INFO] [stderr]    Compiling rustls v0.19.1
[INFO] [stderr]    Compiling webpki-roots v0.21.1
[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" "f04f7f6cbbb6867d95addf981f8534ce04f301becdcae1e7bd956f4cdc3cdaad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f04f7f6cbbb6867d95addf981f8534ce04f301becdcae1e7bd956f4cdc3cdaad", kill_on_drop: false }`
[INFO] [stdout] f04f7f6cbbb6867d95addf981f8534ce04f301becdcae1e7bd956f4cdc3cdaad