[INFO] updating cached repository https://github.com/rustyhorde/mussh
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/rustyhorde/mussh
[INFO] [stderr]    eccaf0c..ec64b06  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ec64b061650df85d8120e9469fe52054f813110c
[INFO] testing rustyhorde/mussh against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustyhorde%2Fmussh" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rustyhorde/mussh on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rustyhorde/mussh
[INFO] finished tweaking git repo https://github.com/rustyhorde/mussh
[INFO] tweaked toml for git repo https://github.com/rustyhorde/mussh written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rustyhorde/mussh already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 191588fb6ddcd23c6ca43a02f822c61e67cbe472d966b323d22b2d4858655351
[INFO] running `"docker" "start" "-a" "191588fb6ddcd23c6ca43a02f822c61e67cbe472d966b323d22b2d4858655351"`
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling wait_group v0.1.4
[INFO] [stderr]    Compiling libsqlite3-sys v0.16.0
[INFO] [stderr]    Compiling libssh2-sys v0.2.12
[INFO] [stderr]    Compiling toml v0.5.3
[INFO] [stderr]    Compiling getset v0.0.8
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling slog-try v0.2.0
[INFO] [stderr]    Compiling slog-term v2.4.1
[INFO] [stderr]    Compiling slog-async v2.3.0
[INFO] [stderr]    Compiling rusqlite v0.20.0
[INFO] [stderr]    Compiling ssh2 v0.4.0
[INFO] [stderr]    Compiling libmussh v1.0.1
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libmussh-1.0.1/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-1.0.1/src/ssh.rs:263:12
[INFO] [stderr]     |
[INFO] [stderr] 263 |     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] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "191588fb6ddcd23c6ca43a02f822c61e67cbe472d966b323d22b2d4858655351"`
[INFO] running `"docker" "rm" "-f" "191588fb6ddcd23c6ca43a02f822c61e67cbe472d966b323d22b2d4858655351"`
[INFO] [stdout] 191588fb6ddcd23c6ca43a02f822c61e67cbe472d966b323d22b2d4858655351