[INFO] updating cached repository Gonzih/temperature-service.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Gonzih/temperature-service.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Gonzih/temperature-service.rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/Gonzih/temperature-service.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Gonzih/temperature-service.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Gonzih/temperature-service.rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Gonzih/temperature-service.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Gonzih/temperature-service.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d67e0b74a96e778ad1d6dc032b83ebce2a46be16
[INFO] sha for GitHub repo Gonzih/temperature-service.rs: d67e0b74a96e778ad1d6dc032b83ebce2a46be16
[INFO] validating manifest of Gonzih/temperature-service.rs 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 Gonzih/temperature-service.rs 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 Gonzih/temperature-service.rs
[INFO] finished frobbing Gonzih/temperature-service.rs
[INFO] frobbed toml for Gonzih/temperature-service.rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/Gonzih/temperature-service.rs/Cargo.toml
[INFO] started frobbing Gonzih/temperature-service.rs
[INFO] finished frobbing Gonzih/temperature-service.rs
[INFO] frobbed toml for Gonzih/temperature-service.rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Gonzih/temperature-service.rs/Cargo.toml
[INFO] crate Gonzih/temperature-service.rs 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]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Gonzih/temperature-service.rs/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[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 Gonzih/temperature-service.rs 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-6/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/Gonzih/temperature-service.rs:/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] 32ea19d9784c3a8cad1c345b9c26f3009fdf25a7f08104a1287ad53c5c24d793
[INFO] running `"docker" "start" "-a" "32ea19d9784c3a8cad1c345b9c26f3009fdf25a7f08104a1287ad53c5c24d793"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling autocfg v0.1.6
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]    Compiling pest v0.3.3
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling term-painter v0.2.4
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling rocket_codegen v0.1.6
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rocket_codegen-0.1.6/build.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[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 `rocket_codegen`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "32ea19d9784c3a8cad1c345b9c26f3009fdf25a7f08104a1287ad53c5c24d793"`
[INFO] running `"docker" "rm" "-f" "32ea19d9784c3a8cad1c345b9c26f3009fdf25a7f08104a1287ad53c5c24d793"`
[INFO] [stdout] 32ea19d9784c3a8cad1c345b9c26f3009fdf25a7f08104a1287ad53c5c24d793