[INFO] updating cached repository bennyyip/aefs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bennyyip/aefs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bennyyip/aefs" "work/ex/beta-1.37-6/sources/1.36.0/gh/bennyyip/aefs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/bennyyip/aefs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bennyyip/aefs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bennyyip/aefs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bennyyip/aefs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b84ed3306e990b06b2fc6b8c6e44a100e1538c32
[INFO] sha for GitHub repo bennyyip/aefs: b84ed3306e990b06b2fc6b8c6e44a100e1538c32
[INFO] validating manifest of bennyyip/aefs on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bennyyip/aefs on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bennyyip/aefs
[INFO] finished frobbing bennyyip/aefs
[INFO] frobbed toml for bennyyip/aefs written to work/ex/beta-1.37-6/sources/1.36.0/gh/bennyyip/aefs/Cargo.toml
[INFO] started frobbing bennyyip/aefs
[INFO] finished frobbing bennyyip/aefs
[INFO] frobbed toml for bennyyip/aefs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bennyyip/aefs/Cargo.toml
[INFO] crate bennyyip/aefs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing bennyyip/aefs against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/bennyyip/aefs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 209eebe459794464a4797159486f23aef9f93609ec63b71bd3a720a88463deec
[INFO] running `"docker" "start" "-a" "209eebe459794464a4797159486f23aef9f93609ec63b71bd3a720a88463deec"`
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.5
[INFO] [stderr]    Compiling untrusted v0.6.1
[INFO] [stderr]    Compiling base32 v0.3.1
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling atty v0.2.6
[INFO] [stderr]    Compiling iovec v0.1.1
[INFO] [stderr]    Compiling fs2 v0.4.2
[INFO] [stderr]    Compiling bincode v0.8.0
[INFO] [stderr]    Compiling bincode v0.9.2
[INFO] [stderr]    Compiling clap v2.29.0
[INFO] [stderr]    Compiling bytes v0.4.5
[INFO] [stderr]    Compiling structopt-derive v0.1.6
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]    Compiling rustbreak v1.4.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling openssl-sys v0.9.23
[INFO] [stderr]    Compiling rayon v0.9.0
[INFO] [stderr]    Compiling openssl v0.9.23
[INFO] [stderr]    Compiling ring v0.13.0-alpha
[INFO] [stderr]    Compiling backtrace v0.3.4
[INFO] [stderr]    Compiling error-chain v0.11.0
[INFO] [stderr]    Compiling structopt v0.1.6
[INFO] [stderr]    Compiling aefs v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the beta release channel
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(fs_read_write)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]  --> src/error.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / error_chain!{
[INFO] [stderr] 2 | |     foreign_links {
[INFO] [stderr] 3 | |         Io(::std::io::Error);
[INFO] [stderr] 4 | |         Ring(::ring::error::Unspecified);
[INFO] [stderr] ... |
[INFO] [stderr] 8 | |     }
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(deprecated)] on by default
[INFO] [stderr]   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]  --> src/error.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | / error_chain!{
[INFO] [stderr] 2 | |     foreign_links {
[INFO] [stderr] 3 | |         Io(::std::io::Error);
[INFO] [stderr] 4 | |         Ring(::ring::error::Unspecified);
[INFO] [stderr] ... |
[INFO] [stderr] 8 | |     }
[INFO] [stderr] 9 | | }
[INFO] [stderr]   | |_^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `aefs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "209eebe459794464a4797159486f23aef9f93609ec63b71bd3a720a88463deec"`
[INFO] running `"docker" "rm" "-f" "209eebe459794464a4797159486f23aef9f93609ec63b71bd3a720a88463deec"`
[INFO] [stdout] 209eebe459794464a4797159486f23aef9f93609ec63b71bd3a720a88463deec