[INFO] updating cached repository av-elier/ar-hist [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/av-elier/ar-hist [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/av-elier/ar-hist" "work/ex/beta-1.37-6/sources/1.36.0/gh/av-elier/ar-hist"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/av-elier/ar-hist'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/av-elier/ar-hist" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/av-elier/ar-hist"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/av-elier/ar-hist'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b74e78a8f86c3e68b89bf236f208aaa00d50bfd1 [INFO] sha for GitHub repo av-elier/ar-hist: b74e78a8f86c3e68b89bf236f208aaa00d50bfd1 [INFO] validating manifest of av-elier/ar-hist 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 av-elier/ar-hist 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 av-elier/ar-hist [INFO] finished frobbing av-elier/ar-hist [INFO] frobbed toml for av-elier/ar-hist written to work/ex/beta-1.37-6/sources/1.36.0/gh/av-elier/ar-hist/Cargo.toml [INFO] started frobbing av-elier/ar-hist [INFO] finished frobbing av-elier/ar-hist [INFO] frobbed toml for av-elier/ar-hist written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/av-elier/ar-hist/Cargo.toml [INFO] crate av-elier/ar-hist 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 av-elier/ar-hist 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/av-elier/ar-hist:/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] 703004424b1d6b62b051ec29c2b65c85aebb84d5c1a1b9dfb79d56baa3a5d7fd [INFO] running `"docker" "start" "-a" "703004424b1d6b62b051ec29c2b65c85aebb84d5c1a1b9dfb79d56baa3a5d7fd"` [INFO] [stderr] Compiling typenum v1.9.0 [INFO] [stderr] Compiling num-traits v0.1.42 [INFO] [stderr] Compiling cc v1.0.4 [INFO] [stderr] Compiling md5 v0.3.7 [INFO] [stderr] Compiling openssl v0.9.23 [INFO] [stderr] Compiling fallible-iterator v0.1.4 [INFO] [stderr] Compiling hex v0.2.0 [INFO] [stderr] Compiling redis v0.8.0 [INFO] [stderr] Compiling regex-syntax v0.4.2 [INFO] [stderr] Compiling termcolor v0.3.3 [INFO] [stderr] Compiling iovec v0.1.2 [INFO] [stderr] Compiling net2 v0.2.31 [INFO] [stderr] Compiling memchr v1.0.2 [INFO] [stderr] Compiling memchr v2.0.1 [INFO] [stderr] Compiling rand v0.3.20 [INFO] [stderr] Compiling time v0.1.39 [INFO] [stderr] Compiling base64 v0.6.0 [INFO] [stderr] Compiling bytes v0.4.6 [INFO] [stderr] Compiling aho-corasick v0.6.4 [INFO] [stderr] Compiling stringprep v0.1.2 [INFO] [stderr] Compiling num-integer v0.1.35 [INFO] [stderr] Compiling serde_json v1.0.9 [INFO] [stderr] Compiling clap v2.29.3 [INFO] [stderr] Compiling mio v0.6.12 [INFO] [stderr] Compiling num-iter v0.1.34 [INFO] [stderr] Compiling tokio-io v0.1.4 [INFO] [stderr] Compiling num v0.1.41 [INFO] [stderr] Compiling openssl-sys v0.9.24 [INFO] [stderr] Compiling chrono v0.4.0 [INFO] [stderr] Compiling generic-array v0.8.3 [INFO] [stderr] Compiling digest v0.6.2 [INFO] [stderr] Compiling block-buffer v0.2.0 [INFO] [stderr] Compiling crypto-mac v0.4.0 [INFO] [stderr] Compiling regex v0.2.5 [INFO] [stderr] Compiling hmac v0.4.2 [INFO] [stderr] Compiling sha2 v0.6.0 [INFO] [stderr] Compiling tokio-core v0.1.12 [INFO] [stderr] Compiling postgres-protocol v0.3.1 [INFO] [stderr] Compiling tokio-proto v0.1.1 [INFO] [stderr] Compiling postgres-shared v0.4.0 [INFO] [stderr] Compiling hyper v0.11.16 [INFO] [stderr] Compiling env_logger v0.5.3 [INFO] [stderr] Compiling postgres v0.15.1 [INFO] [stderr] Compiling ar-hist v0.1.0 (/opt/crater/workdir) [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(drain_filter)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | #![feature(iterator_try_fold)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error: aborting due to 2 previous errors [INFO] [stderr] [INFO] [stderr] For more information about this error, try `rustc --explain E0554`. [INFO] [stderr] error: Could not compile `ar-hist`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "703004424b1d6b62b051ec29c2b65c85aebb84d5c1a1b9dfb79d56baa3a5d7fd"` [INFO] running `"docker" "rm" "-f" "703004424b1d6b62b051ec29c2b65c85aebb84d5c1a1b9dfb79d56baa3a5d7fd"` [INFO] [stdout] 703004424b1d6b62b051ec29c2b65c85aebb84d5c1a1b9dfb79d56baa3a5d7fd