[INFO] updating cached repository atneit/ss-ntru-pke-attack-simulation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/atneit/ss-ntru-pke-attack-simulation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/atneit/ss-ntru-pke-attack-simulation" "work/ex/beta-1.38-1/sources/1.37.0/gh/atneit/ss-ntru-pke-attack-simulation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/atneit/ss-ntru-pke-attack-simulation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/atneit/ss-ntru-pke-attack-simulation" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/atneit/ss-ntru-pke-attack-simulation"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/atneit/ss-ntru-pke-attack-simulation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 75b11a4f87b20f5b7b013a28bed5f72fd7a9ebff
[INFO] sha for GitHub repo atneit/ss-ntru-pke-attack-simulation: 75b11a4f87b20f5b7b013a28bed5f72fd7a9ebff
[INFO] validating manifest of atneit/ss-ntru-pke-attack-simulation 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 atneit/ss-ntru-pke-attack-simulation 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 atneit/ss-ntru-pke-attack-simulation
[INFO] finished frobbing atneit/ss-ntru-pke-attack-simulation
[INFO] frobbed toml for atneit/ss-ntru-pke-attack-simulation written to work/ex/beta-1.38-1/sources/1.37.0/gh/atneit/ss-ntru-pke-attack-simulation/Cargo.toml
[INFO] started frobbing atneit/ss-ntru-pke-attack-simulation
[INFO] finished frobbing atneit/ss-ntru-pke-attack-simulation
[INFO] frobbed toml for atneit/ss-ntru-pke-attack-simulation written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/atneit/ss-ntru-pke-attack-simulation/Cargo.toml
[INFO] crate atneit/ss-ntru-pke-attack-simulation 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 atneit/ss-ntru-pke-attack-simulation against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/atneit/ss-ntru-pke-attack-simulation:/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 9dfcd492c57e66563559321d34b1d2ad7b9d901e1b721eab64b8c41da5f1e63a
[INFO] running `"docker" "start" "-a" "9dfcd492c57e66563559321d34b1d2ad7b9d901e1b721eab64b8c41da5f1e63a"`
[INFO] [stderr]    Compiling svg v0.5.11
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling gag v0.1.10
[INFO] [stderr]    Compiling ctrlc v3.1.1
[INFO] [stderr]    Compiling bincode v1.0.1
[INFO] [stderr]    Compiling syn v0.15.4
[INFO] [stderr]    Compiling structopt-derive v0.2.10
[INFO] [stderr]    Compiling plotlib v0.3.0
[INFO] [stderr]    Compiling structopt v0.2.10
[INFO] [stderr]    Compiling rustyline v1.0.0
[INFO] [stderr]    Compiling promptly v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]    Compiling ss-ntru-pke-attack-simulation 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:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(test)]
[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 `ss-ntru-pke-attack-simulation`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9dfcd492c57e66563559321d34b1d2ad7b9d901e1b721eab64b8c41da5f1e63a"`
[INFO] running `"docker" "rm" "-f" "9dfcd492c57e66563559321d34b1d2ad7b9d901e1b721eab64b8c41da5f1e63a"`
[INFO] [stdout] 9dfcd492c57e66563559321d34b1d2ad7b9d901e1b721eab64b8c41da5f1e63a