[INFO] updating cached repository TeXitoi/pt_ref
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/TeXitoi/pt_ref
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/TeXitoi/pt_ref" "work/ex/beta-1.37-6/sources/1.36.0/gh/TeXitoi/pt_ref"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/TeXitoi/pt_ref'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TeXitoi/pt_ref" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/TeXitoi/pt_ref"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/TeXitoi/pt_ref'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 15dd368ac33121f824c82605617a40b8ae92f61e
[INFO] sha for GitHub repo TeXitoi/pt_ref: 15dd368ac33121f824c82605617a40b8ae92f61e
[INFO] validating manifest of TeXitoi/pt_ref 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 TeXitoi/pt_ref 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 TeXitoi/pt_ref
[INFO] finished frobbing TeXitoi/pt_ref
[INFO] frobbed toml for TeXitoi/pt_ref written to work/ex/beta-1.37-6/sources/1.36.0/gh/TeXitoi/pt_ref/Cargo.toml
[INFO] started frobbing TeXitoi/pt_ref
[INFO] finished frobbing TeXitoi/pt_ref
[INFO] frobbed toml for TeXitoi/pt_ref written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/TeXitoi/pt_ref/Cargo.toml
[INFO] crate TeXitoi/pt_ref 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 TeXitoi/pt_ref against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/TeXitoi/pt_ref:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] af1b30f6e98e58cd7fbc1ce3d19043801b76ab49f9fdf2363970d6f713c2b9d1
[INFO] running `"docker" "start" "-a" "af1b30f6e98e58cd7fbc1ce3d19043801b76ab49f9fdf2363970d6f713c2b9d1"`
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling serde_json v1.0.17
[INFO] [stderr]    Compiling combine v3.2.0
[INFO] [stderr]    Compiling get-corresponding-derive v0.1.0 (https://github.com/CanalTP/navitia_model.git#8cd02299)
[INFO] [stderr]    Compiling strum_macros v0.9.0
[INFO] [stderr]    Compiling csv v1.0.0-beta.5
[INFO] [stderr]    Compiling env_logger v0.5.9
[INFO] [stderr]    Compiling structopt v0.2.8
[INFO] [stderr]    Compiling derivative v1.0.0
[INFO] [stderr]    Compiling navitia_model v0.1.0 (https://github.com/CanalTP/navitia_model.git#8cd02299)
[INFO] [stderr]    Compiling pt_ref 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:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(specialization)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/main.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | #[macro_use]
[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 `pt_ref`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "af1b30f6e98e58cd7fbc1ce3d19043801b76ab49f9fdf2363970d6f713c2b9d1"`
[INFO] running `"docker" "rm" "-f" "af1b30f6e98e58cd7fbc1ce3d19043801b76ab49f9fdf2363970d6f713c2b9d1"`
[INFO] [stdout] af1b30f6e98e58cd7fbc1ce3d19043801b76ab49f9fdf2363970d6f713c2b9d1