[INFO] updating cached repository pitdicker/small-rngs [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/pitdicker/small-rngs [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/pitdicker/small-rngs" "work/ex/beta-1.38-1/sources/1.37.0/gh/pitdicker/small-rngs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pitdicker/small-rngs'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/pitdicker/small-rngs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pitdicker/small-rngs"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pitdicker/small-rngs'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] d74e117d83fec27e52bf5dd8122f822b09d52916 [INFO] sha for GitHub repo pitdicker/small-rngs: d74e117d83fec27e52bf5dd8122f822b09d52916 [INFO] validating manifest of pitdicker/small-rngs 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 pitdicker/small-rngs 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 pitdicker/small-rngs [INFO] finished frobbing pitdicker/small-rngs [INFO] frobbed toml for pitdicker/small-rngs written to work/ex/beta-1.38-1/sources/1.37.0/gh/pitdicker/small-rngs/Cargo.toml [INFO] started frobbing pitdicker/small-rngs [INFO] finished frobbing pitdicker/small-rngs [INFO] frobbed toml for pitdicker/small-rngs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pitdicker/small-rngs/Cargo.toml [INFO] crate pitdicker/small-rngs 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] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing pitdicker/small-rngs 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-5/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/pitdicker/small-rngs:/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] cb19a05e4d709b9fb8ec24f4501e63cddb6ed87763d6cf70220476a8cd50810d [INFO] running `"docker" "start" "-a" "cb19a05e4d709b9fb8ec24f4501e63cddb6ed87763d6cf70220476a8cd50810d"` [INFO] [stderr] Compiling rand_core v0.0.1 (https://github.com/dhardy/rand#8990da26) [INFO] [stderr] Compiling rand v0.4.1 (https://github.com/dhardy/rand#8990da26) [INFO] [stderr] Compiling small_rngs v0.0.1 (/opt/crater/workdir) [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stderr] --> src/lib.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(i128_type)] [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 `small_rngs`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "cb19a05e4d709b9fb8ec24f4501e63cddb6ed87763d6cf70220476a8cd50810d"` [INFO] running `"docker" "rm" "-f" "cb19a05e4d709b9fb8ec24f4501e63cddb6ed87763d6cf70220476a8cd50810d"` [INFO] [stdout] cb19a05e4d709b9fb8ec24f4501e63cddb6ed87763d6cf70220476a8cd50810d