[INFO] updating cached repository SifSif/viridian
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SifSif/viridian
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SifSif/viridian" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/SifSif/viridian"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/SifSif/viridian'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SifSif/viridian" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/SifSif/viridian"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/SifSif/viridian'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f4d106357f350ca0cb32b1937767dc91a6a66ed8
[INFO] sha for GitHub repo SifSif/viridian: f4d106357f350ca0cb32b1937767dc91a6a66ed8
[INFO] validating manifest of SifSif/viridian on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of SifSif/viridian on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing SifSif/viridian
[INFO] finished frobbing SifSif/viridian
[INFO] frobbed toml for SifSif/viridian written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/SifSif/viridian/Cargo.toml
[INFO] started frobbing SifSif/viridian
[INFO] finished frobbing SifSif/viridian
[INFO] frobbed toml for SifSif/viridian written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/SifSif/viridian/Cargo.toml
[INFO] crate SifSif/viridian already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking SifSif/viridian against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-0/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/SifSif/viridian:/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=forbid" "-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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 82bc9555d248e612e147db13f194361519d5b82aa6bf3d1a83733a67870df788
[INFO] running `"docker" "start" "-a" "82bc9555d248e612e147db13f194361519d5b82aa6bf3d1a83733a67870df788"`
[INFO] [stderr]    Compiling cc v1.0.20
[INFO] [stderr]    Compiling serde v1.0.73
[INFO] [stderr]    Compiling regex v1.0.3
[INFO] [stderr]     Checking census v0.1.1
[INFO] [stderr]     Checking rust-stemmers v0.1.0
[INFO] [stderr]     Checking downcast v0.9.2
[INFO] [stderr]    Compiling actix-web v0.7.4
[INFO] [stderr]     Checking socket2 v0.3.7
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/downcast-0.9.2/src/lib.rs:120:38
[INFO] [stderr]     |
[INFO] [stderr] 120 |     fn is_type(&self) -> bool { self.type_id() == TypeId::of::<T>() }
[INFO] [stderr]     |                                      ^^^^^^^ multiple `type_id` found
[INFO] [stderr]     Checking tokio-executor v0.1.4
[INFO] [stderr]     |
[INFO] [stderr] note: candidate #1 is defined in the trait `Any`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/downcast-0.9.2/src/lib.rs:29:5
[INFO] [stderr]     |
[INFO] [stderr] 29  |     fn type_id(&self) -> TypeId { TypeId::of::<Self>() }
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: to disambiguate the method call, write `Any::type_id(&self)` instead
[INFO] [stderr] note: candidate #2 is defined in the trait `std::any::Any`
[INFO] [stderr]     = help: to disambiguate the method call, write `std::any::Any::type_id(&self)` instead
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0034`.
[INFO] [stderr] error: Could not compile `downcast`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "82bc9555d248e612e147db13f194361519d5b82aa6bf3d1a83733a67870df788"`
[INFO] running `"docker" "rm" "-f" "82bc9555d248e612e147db13f194361519d5b82aa6bf3d1a83733a67870df788"`
[INFO] [stdout] 82bc9555d248e612e147db13f194361519d5b82aa6bf3d1a83733a67870df788