[INFO] updating cached repository chrisbouchard/klondike-rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/chrisbouchard/klondike-rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/chrisbouchard/klondike-rs" "work/ex/beta-1.37-6/sources/1.36.0/gh/chrisbouchard/klondike-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/chrisbouchard/klondike-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/chrisbouchard/klondike-rs" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/chrisbouchard/klondike-rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/chrisbouchard/klondike-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dc08c6cfcb6513309d884a031700990d1becdec2
[INFO] sha for GitHub repo chrisbouchard/klondike-rs: dc08c6cfcb6513309d884a031700990d1becdec2
[INFO] validating manifest of chrisbouchard/klondike-rs 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 chrisbouchard/klondike-rs 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 chrisbouchard/klondike-rs
[INFO] finished frobbing chrisbouchard/klondike-rs
[INFO] frobbed toml for chrisbouchard/klondike-rs written to work/ex/beta-1.37-6/sources/1.36.0/gh/chrisbouchard/klondike-rs/Cargo.toml
[INFO] started frobbing chrisbouchard/klondike-rs
[INFO] finished frobbing chrisbouchard/klondike-rs
[INFO] frobbed toml for chrisbouchard/klondike-rs written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/chrisbouchard/klondike-rs/Cargo.toml
[INFO] crate chrisbouchard/klondike-rs 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] testing chrisbouchard/klondike-rs against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/chrisbouchard/klondike-rs:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] fea654df8cda4c807ebe192ed77b23f93882395f07b286431e19dbfba62ada4a
[INFO] running `"docker" "start" "-a" "fea654df8cda4c807ebe192ed77b23f93882395f07b286431e19dbfba62ada4a"`
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling log-panics v2.0.0
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling error-chain v0.12.0
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling klondike-rs v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]   --> src/lib.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | #![feature(const_fn)]
[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:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | / error_chain! {
[INFO] [stderr] 4 | |     foreign_links {
[INFO] [stderr] 5 | |         Fmt(fmt::Error);
[INFO] [stderr] 6 | |         Io(io::Error);
[INFO] [stderr] 7 | |         TryFromInt(num::TryFromIntError);
[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:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | / error_chain! {
[INFO] [stderr] 4 | |     foreign_links {
[INFO] [stderr] 5 | |         Fmt(fmt::Error);
[INFO] [stderr] 6 | |         Io(io::Error);
[INFO] [stderr] 7 | |         TryFromInt(num::TryFromIntError);
[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 `klondike-rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "fea654df8cda4c807ebe192ed77b23f93882395f07b286431e19dbfba62ada4a"`
[INFO] running `"docker" "rm" "-f" "fea654df8cda4c807ebe192ed77b23f93882395f07b286431e19dbfba62ada4a"`
[INFO] [stdout] fea654df8cda4c807ebe192ed77b23f93882395f07b286431e19dbfba62ada4a