[INFO] crate route-recognizer 0.1.12 is already in cache
[INFO] extracting crate route-recognizer 0.1.12 into work/ex/beta-1.38-1/sources/1.37.0/reg/route-recognizer/0.1.12
[INFO] extracting crate route-recognizer 0.1.12 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/route-recognizer/0.1.12
[INFO] validating manifest of route-recognizer-0.1.12 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 route-recognizer-0.1.12 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 route-recognizer-0.1.12
[INFO] finished frobbing route-recognizer-0.1.12
[INFO] frobbed toml for route-recognizer-0.1.12 written to work/ex/beta-1.38-1/sources/1.37.0/reg/route-recognizer/0.1.12/Cargo.toml
[INFO] started frobbing route-recognizer-0.1.12
[INFO] finished frobbing route-recognizer-0.1.12
[INFO] frobbed toml for route-recognizer-0.1.12 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/route-recognizer/0.1.12/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 route-recognizer-0.1.12 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/route-recognizer/0.1.12:/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] 312bd0f96363fd4c9a255283f00f10a335553e11de44a64c0037b90872725b17
[INFO] running `"docker" "start" "-a" "312bd0f96363fd4c9a255283f00f10a335553e11de44a64c0037b90872725b17"`
[INFO] [stderr]    Compiling route-recognizer v0.1.12 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `"docker" "inspect" "312bd0f96363fd4c9a255283f00f10a335553e11de44a64c0037b90872725b17"`
[INFO] running `"docker" "rm" "-f" "312bd0f96363fd4c9a255283f00f10a335553e11de44a64c0037b90872725b17"`
[INFO] [stdout] 312bd0f96363fd4c9a255283f00f10a335553e11de44a64c0037b90872725b17
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/route-recognizer/0.1.12:/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" "test" "--frozen" "--no-run"`
[INFO] [stdout] 87b554a7def60362db854be71151741c46cc73947e6bca00ec4df9b7dede8edf
[INFO] running `"docker" "start" "-a" "87b554a7def60362db854be71151741c46cc73947e6bca00ec4df9b7dede8edf"`
[INFO] [stderr]    Compiling route-recognizer v0.1.12 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: #![feature] may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![cfg_attr(test, 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 `route-recognizer`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "87b554a7def60362db854be71151741c46cc73947e6bca00ec4df9b7dede8edf"`
[INFO] running `"docker" "rm" "-f" "87b554a7def60362db854be71151741c46cc73947e6bca00ec4df9b7dede8edf"`
[INFO] [stdout] 87b554a7def60362db854be71151741c46cc73947e6bca00ec4df9b7dede8edf