[INFO] updating cached repository fotonick/doxie-control
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/fotonick/doxie-control
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/fotonick/doxie-control" "work/ex/beta-1.38-1/sources/1.37.0/gh/fotonick/doxie-control"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/fotonick/doxie-control'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/fotonick/doxie-control" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fotonick/doxie-control"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fotonick/doxie-control'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f48a9d9e684c3d9b6854acebe90542b72ef750a0
[INFO] sha for GitHub repo fotonick/doxie-control: f48a9d9e684c3d9b6854acebe90542b72ef750a0
[INFO] validating manifest of fotonick/doxie-control 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 fotonick/doxie-control 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 fotonick/doxie-control
[INFO] finished frobbing fotonick/doxie-control
[INFO] frobbed toml for fotonick/doxie-control written to work/ex/beta-1.38-1/sources/1.37.0/gh/fotonick/doxie-control/Cargo.toml
[INFO] started frobbing fotonick/doxie-control
[INFO] finished frobbing fotonick/doxie-control
[INFO] frobbed toml for fotonick/doxie-control written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/fotonick/doxie-control/Cargo.toml
[INFO] crate fotonick/doxie-control 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]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing fotonick/doxie-control 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-5/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/fotonick/doxie-control:/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] a6ab4227f38d9505cffbcff17e9dd411ec947da6e3e847f6ea7126eed144443f
[INFO] running `"docker" "start" "-a" "a6ab4227f38d9505cffbcff17e9dd411ec947da6e3e847f6ea7126eed144443f"`
[INFO] [stderr]    Compiling encoding_rs v0.8.14
[INFO] [stderr]    Compiling c_linked_list v1.1.1
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling openssl-sys v0.9.40
[INFO] [stderr]    Compiling serde_json v1.0.36
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling clap v2.27.1
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling hyper v0.10.15
[INFO] [stderr]    Compiling serde_urlencoded v0.5.4
[INFO] [stderr]    Compiling tokio-io v0.1.11
[INFO] [stderr]    Compiling http v0.1.14
[INFO] [stderr]    Compiling get_if_addrs v0.5.3
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling openssl v0.10.16
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling rand v0.6.4
[INFO] [stderr]    Compiling uuid v0.7.1
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling ssdp v0.7.0
[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/ssdp-0.7.0/src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(ip)]
[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 `ssdp`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "a6ab4227f38d9505cffbcff17e9dd411ec947da6e3e847f6ea7126eed144443f"`
[INFO] running `"docker" "rm" "-f" "a6ab4227f38d9505cffbcff17e9dd411ec947da6e3e847f6ea7126eed144443f"`
[INFO] [stdout] a6ab4227f38d9505cffbcff17e9dd411ec947da6e3e847f6ea7126eed144443f