[INFO] updating cached repository Scetch/uWindsorCourseSearchBot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Scetch/uWindsorCourseSearchBot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Scetch/uWindsorCourseSearchBot" "work/ex/beta-1.38-1/sources/1.37.0/gh/Scetch/uWindsorCourseSearchBot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Scetch/uWindsorCourseSearchBot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Scetch/uWindsorCourseSearchBot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Scetch/uWindsorCourseSearchBot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Scetch/uWindsorCourseSearchBot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9d2a34fa592fc9d6963eaec35d649fd9df9acfae
[INFO] sha for GitHub repo Scetch/uWindsorCourseSearchBot: 9d2a34fa592fc9d6963eaec35d649fd9df9acfae
[INFO] validating manifest of Scetch/uWindsorCourseSearchBot 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 Scetch/uWindsorCourseSearchBot 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 Scetch/uWindsorCourseSearchBot
[INFO] finished frobbing Scetch/uWindsorCourseSearchBot
[INFO] frobbed toml for Scetch/uWindsorCourseSearchBot written to work/ex/beta-1.38-1/sources/1.37.0/gh/Scetch/uWindsorCourseSearchBot/Cargo.toml
[INFO] started frobbing Scetch/uWindsorCourseSearchBot
[INFO] finished frobbing Scetch/uWindsorCourseSearchBot
[INFO] frobbed toml for Scetch/uWindsorCourseSearchBot written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Scetch/uWindsorCourseSearchBot/Cargo.toml
[INFO] crate Scetch/uWindsorCourseSearchBot 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] 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] testing Scetch/uWindsorCourseSearchBot 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-4/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/Scetch/uWindsorCourseSearchBot:/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] edc7b9ae357ca3ba1ca595569fce97d4a5c61e8230af20dd5997b72d4ed8481f
[INFO] running `"docker" "start" "-a" "edc7b9ae357ca3ba1ca595569fce97d4a5c61e8230af20dd5997b72d4ed8481f"`
[INFO] [stderr]    Compiling futures v0.1.22
[INFO] [stderr]    Compiling crunchy v0.1.6
[INFO] [stderr]    Compiling utf-8 v0.7.2
[INFO] [stderr]    Compiling stable_deref_trait v1.1.0
[INFO] [stderr]    Compiling downcast v0.9.2
[INFO] [stderr]    Compiling census v0.1.1
[INFO] [stderr]    Compiling unicase v2.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling net2 v0.2.33
[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]     |
[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" "edc7b9ae357ca3ba1ca595569fce97d4a5c61e8230af20dd5997b72d4ed8481f"`
[INFO] running `"docker" "rm" "-f" "edc7b9ae357ca3ba1ca595569fce97d4a5c61e8230af20dd5997b72d4ed8481f"`
[INFO] [stdout] edc7b9ae357ca3ba1ca595569fce97d4a5c61e8230af20dd5997b72d4ed8481f