[INFO] crate wsdclient 0.0.0 is already in cache
[INFO] extracting crate wsdclient 0.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/wsdclient/0.0.0
[INFO] extracting crate wsdclient 0.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/wsdclient/0.0.0
[INFO] validating manifest of wsdclient-0.0.0 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 wsdclient-0.0.0 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 wsdclient-0.0.0
[INFO] finished frobbing wsdclient-0.0.0
[INFO] frobbed toml for wsdclient-0.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/wsdclient/0.0.0/Cargo.toml
[INFO] started frobbing wsdclient-0.0.0
[INFO] finished frobbing wsdclient-0.0.0
[INFO] frobbed toml for wsdclient-0.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/wsdclient/0.0.0/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] 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] [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] testing wsdclient-0.0.0 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/reg/wsdclient/0.0.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] ae3e239d9d68cefbb7b476e52defacf88e6d85ff6bb01fec93fdf28e91694d4d
[INFO] running `"docker" "start" "-a" "ae3e239d9d68cefbb7b476e52defacf88e6d85ff6bb01fec93fdf28e91694d4d"`
[INFO] [stderr]    Compiling wsdclient v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(custom_attribute)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(plugin)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/types.rs:308:72
[INFO] [stderr]     |
[INFO] [stderr] 308 |     pub fn from_wsd_error_str(error: &str) -> Result<DiagramError, Box<Error>> {
[INFO] [stderr]     |                                                                        ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/client.rs:37:86
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn get_diagram(spec: &str, parameters: &PlotParameters) -> Result<WSDResult, Box<Error>> {
[INFO] [stderr]    |                                                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/client.rs:133:61
[INFO] [stderr]     |
[INFO] [stderr] 133 | fn determine_actual_format(url: &str) -> Result<Format, Box<Error>> {
[INFO] [stderr]     |                                                             ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/config.rs:31:54
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub fn from_command_line() -> Result<Config, Box<Error>> {
[INFO] [stderr]    |                                                      ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `wsdclient`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ae3e239d9d68cefbb7b476e52defacf88e6d85ff6bb01fec93fdf28e91694d4d"`
[INFO] running `"docker" "rm" "-f" "ae3e239d9d68cefbb7b476e52defacf88e6d85ff6bb01fec93fdf28e91694d4d"`
[INFO] [stdout] ae3e239d9d68cefbb7b476e52defacf88e6d85ff6bb01fec93fdf28e91694d4d