[INFO] crate pattern-3 0.5.0 is already in cache
[INFO] extracting crate pattern-3 0.5.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/pattern-3/0.5.0
[INFO] extracting crate pattern-3 0.5.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pattern-3/0.5.0
[INFO] validating manifest of pattern-3-0.5.0 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 pattern-3-0.5.0 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 pattern-3-0.5.0
[INFO] finished frobbing pattern-3-0.5.0
[INFO] frobbed toml for pattern-3-0.5.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/pattern-3/0.5.0/Cargo.toml
[INFO] started frobbing pattern-3-0.5.0
[INFO] finished frobbing pattern-3-0.5.0
[INFO] frobbed toml for pattern-3-0.5.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/pattern-3/0.5.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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 pattern-3-0.5.0 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/pattern-3/0.5.0:/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] 9ea14b52d2c9cf1e3b049f05d6c4a4fe44a51510b604e4eeac18ffe1377515e8
[INFO] running `"docker" "start" "-a" "9ea14b52d2c9cf1e3b049f05d6c4a4fe44a51510b604e4eeac18ffe1377515e8"`
[INFO] [stderr]    Compiling pattern-3 v0.5.0 (/opt/crater/workdir)
[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(
[INFO] [stderr] 2  | |     specialization,
[INFO] [stderr] 3  | |     // used in two places:
[INFO] [stderr] 4  | |     //  1. to support using the same two-way algorithm for non-Ord slices
[INFO] [stderr] ...  |
[INFO] [stderr] 17 | |     // some useful library features
[INFO] [stderr] 18 | | )]
[INFO] [stderr]    | |__^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/omgwtf8/wtf8.rs:193:21
[INFO] [stderr]     |
[INFO] [stderr] 193 |             0xf00000...0xffffffff => {
[INFO] [stderr]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(ellipsis_inclusive_range_patterns)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/omgwtf8/wtf8.rs:196:21
[INFO] [stderr]     |
[INFO] [stderr] 196 |             0x800000...0xbfffff => self.0 & 0x3f | self.0 >> 2 & 0x3c0 | 0xdc00,
[INFO] [stderr]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/omgwtf8/wtf8.rs:323:31
[INFO] [stderr]     |
[INFO] [stderr] 323 |             ascii_byte @ 0x00 ... 0x7F => ascii_byte,
[INFO] [stderr]     |                               ^^^ help: use `..=` for an inclusive range
[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 `pattern-3`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "9ea14b52d2c9cf1e3b049f05d6c4a4fe44a51510b604e4eeac18ffe1377515e8"`
[INFO] running `"docker" "rm" "-f" "9ea14b52d2c9cf1e3b049f05d6c4a4fe44a51510b604e4eeac18ffe1377515e8"`
[INFO] [stdout] 9ea14b52d2c9cf1e3b049f05d6c4a4fe44a51510b604e4eeac18ffe1377515e8