[INFO] updating cached repository knutaf/aoclib_rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/knutaf/aoclib_rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/knutaf/aoclib_rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/knutaf/aoclib_rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/knutaf/aoclib_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/knutaf/aoclib_rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/knutaf/aoclib_rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/knutaf/aoclib_rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 98c08155199a76a47ac861872c7f62eadfe3c34c
[INFO] sha for GitHub repo knutaf/aoclib_rs: 98c08155199a76a47ac861872c7f62eadfe3c34c
[INFO] validating manifest of knutaf/aoclib_rs on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of knutaf/aoclib_rs on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing knutaf/aoclib_rs
[INFO] finished frobbing knutaf/aoclib_rs
[INFO] frobbed toml for knutaf/aoclib_rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/knutaf/aoclib_rs/Cargo.toml
[INFO] started frobbing knutaf/aoclib_rs
[INFO] finished frobbing knutaf/aoclib_rs
[INFO] frobbed toml for knutaf/aoclib_rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/knutaf/aoclib_rs/Cargo.toml
[INFO] crate knutaf/aoclib_rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing knutaf/aoclib_rs against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/knutaf/aoclib_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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] be7bfc96ec5770bbca1342f9f5c5afbb24d20db8b926fd5655225e166b627800
[INFO] running `"docker" "start" "-a" "be7bfc96ec5770bbca1342f9f5c5afbb24d20db8b926fd5655225e166b627800"`
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.6.0
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling aoclib v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unknown lint: `new_without_default_derive`
[INFO] [stderr]   --> src/grid.rs:17:14
[INFO] [stderr]    |
[INFO] [stderr] 17 |     #![allow(new_without_default_derive)]
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unknown_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(nll)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[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 `aoclib`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "be7bfc96ec5770bbca1342f9f5c5afbb24d20db8b926fd5655225e166b627800"`
[INFO] running `"docker" "rm" "-f" "be7bfc96ec5770bbca1342f9f5c5afbb24d20db8b926fd5655225e166b627800"`
[INFO] [stdout] be7bfc96ec5770bbca1342f9f5c5afbb24d20db8b926fd5655225e166b627800