[INFO] crate mussh 3.0.0 is already in cache
[INFO] checking mussh-3.0.0 against beta-2019-10-27 for pr-65897
[INFO] extracting crate mussh 3.0.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate mussh 3.0.0 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mussh 3.0.0
[INFO] finished tweaking crates.io crate mussh 3.0.0
[INFO] tweaked toml for crates.io crate mussh 3.0.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e583ac8a5707d0c116e22c3a96105d8573664157f8db3d479f5f05b96c721bcb
[INFO] running `"docker" "start" "-a" "e583ac8a5707d0c116e22c3a96105d8573664157f8db3d479f5f05b96c721bcb"`
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking libmussh v0.1.1
[INFO] [stderr]     Checking slog-term v2.4.2
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libmussh-0.1.1/src/lib.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | #![feature(crate_visibility_modifier, try_from)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libmussh-0.1.1/src/ssh.rs:242:12
[INFO] [stderr]     |
[INFO] [stderr] 242 |     if let Some(mut sess) = Session::new() {
[INFO] [stderr]     |            ^^^^^^^^^^^^^^   -------------- this match expression has type `std::result::Result<ssh2::session::Session, ssh2::error::Error>`
[INFO] [stderr]     |            |
[INFO] [stderr]     |            expected enum `std::result::Result`, found enum `std::option::Option`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `std::result::Result<ssh2::session::Session, ssh2::error::Error>`
[INFO] [stderr]                found type `std::option::Option<_>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `libmussh`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e583ac8a5707d0c116e22c3a96105d8573664157f8db3d479f5f05b96c721bcb"`
[INFO] running `"docker" "rm" "-f" "e583ac8a5707d0c116e22c3a96105d8573664157f8db3d479f5f05b96c721bcb"`
[INFO] [stdout] e583ac8a5707d0c116e22c3a96105d8573664157f8db3d479f5f05b96c721bcb